H01Q1/00	7	Details of, or arrangements associated with, antennas (arrangements for varying orientation of directional pattern H01Q3/00)<br><br><u>NOTE</u><br><br> This group covers only: <br> structural details or features of antennas not dependent on electric operation;<br> structural details or features applicable to more than one type of &#160;antenna or antenna element. <br> Structural details or features described with reference to, or clearly applicable only to, &#160;antennas or antenna elements of a particular type are classified in the group appropriate to that type 	H01Q1/00	H01Q1/00		888
H01Q1/002	8	{Protection against seismic waves, thermal radiation or other disturbances, e.g. nuclear explosion; Arrangements for improving the power handling capability of an antenna}	H01Q1/00	H01Q1/00		1319
H01Q1/005	8	{Damping of vibrations; Means for reducing wind-induced forces}	H01Q1/00	H01Q1/00		688
H01Q1/007	8	{specially adapted for indoor communication}	H01Q1/00	H01Q1/00		715
H01Q1/02	8	Arrangements for de-icing; Arrangements for drying-out {; Arrangements for cooling; Arrangements for preventing corrosion}	H01Q1/02	H01Q1/02		2473
H01Q1/04	8	Adaptation for subterranean or subaqueous use	H01Q1/04	H01Q1/04		707
H01Q1/06	8	Means for the lighting or illuminating of antennas, e.g. for purpose of warning	H01Q1/06	H01Q1/06		283
H01Q1/08	8	Means for collapsing antennas or parts thereof (collapsible loop antennas&#160;H01Q7/02; means for collapsing H-antennas or Yagi antennas&#160;H01Q19/04)	H01Q1/08	H01Q1/08		1421
H01Q1/081	9	{Inflatable antennas}	H01Q1/08	H01Q1/08		171
H01Q1/082	10	{Balloon antennas}	H01Q1/08	H01Q1/08		83
H01Q1/084	9	{Pivotable antennas}	H01Q1/08	H01Q1/08		1560
H01Q1/085	9	{Flexible aerials; Whip aerials with a resilient base}	H01Q1/08	H01Q1/08		603
H01Q1/087	10	{Extensible roll- up aerials}	H01Q1/08	H01Q1/08		201
H01Q1/088	9	{Quick-releasable antenna elements}	H01Q1/08	H01Q1/08		458
H01Q1/10	9	Telescopic elements	H01Q1/10	H01Q1/10		1529
H01Q1/103	10	{Latching means; ensuring extension or retraction thereof}	H01Q1/10	H01Q1/10		977
H01Q1/106	10	{Means for locking or protecting against unauthorized extraction}	H01Q1/10	H01Q1/10		76
H01Q1/12	8	Supports; Mounting means	H01Q1/12	H01Q1/12		5908
H01Q1/1207	9	{for fastening a rigid aerial element}	H01Q1/12	H01Q1/12		1921
H01Q1/1214	10	{through a wall}	H01Q1/12	H01Q1/12		856
H01Q1/1221	10	{onto a wall}	H01Q1/12	H01Q1/12		794
H01Q1/1228	10	{on a boom}	H01Q1/12	H01Q1/12		1025
H01Q1/1235	9	{Collapsible supports; Means for erecting a rigid antenna}	H01Q1/12	H01Q1/12		1415
H01Q1/1242	9	{Rigid masts specially adapted for supporting an aerial}	H01Q1/12	H01Q1/12		1354
H01Q1/125	9	{Means for positioning}	H01Q1/12	H01Q1/12		2067
H01Q1/1257	10	{using the received signal strength}	H01Q1/12	H01Q1/12		828
H01Q1/1264	10	{Adjusting different parts or elements of an aerial unit}	H01Q1/12	H01Q1/12		557
H01Q1/1271	9	{for mounting on windscreens}	H01Q1/12	H01Q1/12		1655
H01Q1/1278	10	{in association with heating wires or layers}	H01Q1/12	H01Q1/12		486
H01Q1/1285	10	{with capacitive feeding through the windscreen}	H01Q1/12	H01Q1/12		223
H01Q1/1292	9	{for mounting on balloons}	H01Q1/12	H01Q1/12		71
H01Q1/14	9	for wire or other non-rigid radiating elements	H01Q1/14	H01Q1/14		305
H01Q1/16	10	Strainers, spreaders, or spacers	H01Q1/16	H01Q1/16		175
H01Q1/18	9	Means for stabilising antennas on an unstable platform	H01Q1/18	H01Q1/18		624
H01Q1/185	10	{by electronic means}	H01Q1/18	H01Q1/18		65
H01Q1/20	9	Resilient mountings	H01Q1/20	H01Q1/20		814
H01Q1/22	9	by structural association with other equipment or articles	H01Q1/22	H01Q1/22		8355
H01Q1/2208	10	{associated with components used in interrogation type services, i.e. in systems for information exchange between an interrogator/reader and a tag/transponder, e.g. in Radio Frequency Identification [RFID] systems (methods or arrangements for sensing record carriers, e.g. for reading patterns G06K7/00; record carrier for use with machines and with at least a part designed to carry digital markings G06K19/00)}	H01Q1/22	H01Q1/22		1675
H01Q1/2216	11	{used in interrogator/reader equipment}	H01Q1/22	H01Q1/22		1541
H01Q1/2225	11	{used in active tags, i.e. provided with its own power source or in passive tags, i.e. deriving power from RF signal}	H01Q1/22	H01Q1/22		2811
H01Q1/2233	11	{used in consumption-meter devices, e.g. electricity, gas or water meters}	H01Q1/22	H01Q1/22		226
H01Q1/2241	11	{used in or for vehicle tyres}	H01Q1/22	H01Q1/22		410
H01Q1/225	10	{used in level-measurement devices, e.g. for level gauge measurement}	H01Q1/22	H01Q1/22		750
H01Q1/2258	10	{used with computer equipment}	H01Q1/22	H01Q1/22		1151
H01Q1/2266	11	{disposed inside the computer}	H01Q1/22	H01Q1/22		1578
H01Q1/2275	11	{associated to expansion card or bus, e.g. in PCMCIA, PC cards, Wireless USB}	H01Q1/22	H01Q1/22		440
H01Q1/2283	10	{mounted in or on the surface of a semiconductor substrate as a chip-type antenna or integrated with other components into an IC package}	H01Q1/22	H01Q1/22		3551
H01Q1/2291	10	{used in Bluetooth&#174; or Wi-Fi&#174; devices of Wireless Local Area Networks [WLAN] (H01Q1/241 takes precedence; WLAN in general H04W)}	H01Q1/22	H01Q1/22		1905
H01Q1/24	10	with receiving set	H01Q1/24	H01Q1/24		5351
H01Q1/241	11	{used in mobile communications, e.g. GSM (H01Q1/247, H01Q1/248 take precedence)}	H01Q1/24	H01Q1/24		2636
H01Q1/242	12	{specially adapted for hand-held use}	H01Q1/24	H01Q1/24		4501
H01Q1/243	13	{with built-in antennas}	H01Q1/24	H01Q1/24		13572
H01Q1/244	14	{extendable from a housing along a given path}	H01Q1/24	H01Q1/24		1626
H01Q1/245	13	{with means for shaping the antenna pattern, e.g. in order to protect user against rf exposure}	H01Q1/24	H01Q1/24		1355
H01Q1/246	12	{specially adapted for base stations}	H01Q1/24	H01Q1/24		5753
H01Q1/247	11	{with frequency mixer, e.g. for direct satellite reception or Doppler radar}	H01Q1/24	H01Q1/24		638
H01Q1/248	11	{provided with an AC/DC converting device, e.g. rectennas}	H01Q1/24	H01Q1/24		463
H01Q1/26	10	with electric discharge tube	H01Q1/26	H01Q1/26		161
H01Q1/27	8	Adaptation for use in or on movable bodies (H01Q1/08, H01Q1/12, H01Q1/18 take precedence)	H01Q1/27	H01Q1/27		792
H01Q1/273	9	{Adaptation for carrying or wearing by persons or animals}	H01Q1/27	H01Q1/27		3401
H01Q1/276	10	{for mounting on helmets}	H01Q1/27	H01Q1/27		131
H01Q1/28	9	Adaptation for use in or on aircraft, missiles, satellites, or balloons	H01Q1/28	H01Q1/28		1773
H01Q1/281	10	{Nose antennas}	H01Q1/28	H01Q1/28		288
H01Q1/282	10	{Modifying the aerodynamic properties of the vehicle, e.g. projecting type aerials}	H01Q1/28	H01Q1/28		111
H01Q1/283	11	{Blade, stub antennas}	H01Q1/28	H01Q1/28		129
H01Q1/285	10	{Aircraft wire antennas (means for trailing H01Q1/30)}	H01Q1/28	H01Q1/28		664
H01Q1/286	10	{substantially flush mounted with the skin of the craft}	H01Q1/28	H01Q1/28		442
H01Q1/287	11	{integrated in a wing or a stabiliser}	H01Q1/28	H01Q1/28		191
H01Q1/288	10	{Satellite antennas}	H01Q1/28	H01Q1/28		1894
H01Q1/30	10	Means for trailing antennas	H01Q1/30	H01Q1/30		211
H01Q1/32	9	Adaptation for use in or on road or rail vehicles	H01Q1/32	H01Q1/32		2526
H01Q1/3208	10	{characterised by the application wherein the antenna is used}	H01Q1/32	H01Q1/32		425
H01Q1/3216	11	{where the road or rail vehicle is only used as transportation means}	H01Q1/32	H01Q1/32		322
H01Q1/3225	11	{Cooperation with the rails or the road}	H01Q1/32	H01Q1/32		196
H01Q1/3233	11	{particular used as part of a sensor or in a security system, e.g. for automotive radar, navigation systems}	H01Q1/32	H01Q1/32		2534
H01Q1/3241	12	{particular used in keyless entry systems}	H01Q1/32	H01Q1/32		555
H01Q1/325	10	{characterised by the location of the antenna on the vehicle}	H01Q1/32	H01Q1/32		786
H01Q1/3258	11	{using the gutter of the vehicle; Means for clamping a whip aerial on the edge of a part of the vehicle}	H01Q1/32	H01Q1/32		172
H01Q1/3266	11	{using the mirror of the vehicle}	H01Q1/32	H01Q1/32		230
H01Q1/3275	11	{mounted on a horizontal surface of the vehicle, e.g. on roof, hood, trunk}	H01Q1/32	H01Q1/32		2915
H01Q1/3283	11	{side-mounted antennas, e.g. bumper-mounted, door-mounted (mounted on windscreens H01Q1/1271)}	H01Q1/32	H01Q1/32		809
H01Q1/3291	11	{mounted in or on other locations inside the vehicle or vehicle body}	H01Q1/32	H01Q1/32		891
H01Q1/34	9	Adaptation for use in or on ships, submarines, buoys or torpedoes (for subaqueous use H01Q1/04)	H01Q1/34	H01Q1/34		1011
H01Q1/36	8	Structural form of radiating elements, e.g. cone, spiral, umbrella; {Particular materials used therewith}(H01Q1/08, H01Q1/14 take precedence)	H01Q1/36	H01Q1/36		13826
H01Q1/362	9	{for broadside radiating helical antennas}	H01Q1/36	H01Q1/36		1500
H01Q1/364	9	{using a particular conducting material, e.g. superconductor}	H01Q1/36	H01Q1/36		858
H01Q1/366	10	{using an ionized gas}	H01Q1/36	H01Q1/36		165
H01Q1/368	10	{using carbon or carbon composite}	H01Q1/36	H01Q1/36		179
H01Q1/38	9	formed by a conductive layer on an insulating support {(patch antennas H01Q9/0407; microstrip dipole antennas H01Q9/065; microstrip slot antennas H01Q13/106; transmission line microstrip antennas H01Q13/206; manufacturing reflecting surfaces using insulating material for supporting the reflecting surface&#160; H01Q15/142)}	H01Q1/38	H01Q1/38		25886
H01Q1/40	8	Radiating elements coated with or embedded in protective material	H01Q1/40	H01Q1/40		1856
H01Q1/405	9	{Radome integrated radiating elements}	H01Q1/40	H01Q1/40		299
H01Q1/42	8	Housings not intimately mechanically associated with radiating elements, e.g. radome	H01Q1/42	H01Q1/42		6356
H01Q1/421	9	{Means for correcting aberrations introduced by a radome}	H01Q1/42	H01Q1/42		218
H01Q1/422	9	{comprising two or more layers of dielectric material (H01Q1/425 takes precedence)}	H01Q1/42	H01Q1/42		930
H01Q1/424	10	{comprising a layer of expanded material}	H01Q1/42	H01Q1/42		141
H01Q1/425	9	{comprising a metallic grid}	H01Q1/42	H01Q1/42		304
H01Q1/427	9	{Flexible radomes}	H01Q1/42	H01Q1/42		126
H01Q1/428	9	{Collapsible radomes; rotatable, tiltable radomes}	H01Q1/42	H01Q1/42		180
H01Q1/44	8	using equipment having another main function to serve additionally as an antenna {, e.g. means for giving an antenna an aesthetic aspect}(H01Q1/27&#160;-&#160;H01Q1/34 take precedence)	H01Q1/44	H01Q1/44		3750
H01Q1/46	9	Electric supply lines or communication lines	H01Q1/46	H01Q1/46		1373
H01Q1/48	8	Earthing means; Earth screens; Counterpoises	H01Q1/48	H01Q1/48		11697
H01Q1/50	8	Structural association of antennas with earthing switches, lead-in devices or lightning protectors	H01Q1/50	H01Q1/50		18756
H01Q1/52	8	Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure (absorbing means H01Q17/00)	H01Q1/52	H01Q1/52		4201
H01Q1/521	9	{reducing the coupling between adjacent antennas}	H01Q1/52	H01Q1/52		3377
H01Q1/523	10	{between antennas of an array}	H01Q1/52	H01Q1/52		1901
H01Q1/525	10	{between emitting and receiving antennas}	H01Q1/52	H01Q1/52		639
H01Q1/526	9	{Electromagnetic shields}	H01Q1/52	H01Q1/52		2395
H01Q1/528	9	{reducing the re-radiation of a support structure (in a parabolic reflector antenna H01Q19/023)}	H01Q1/52	H01Q1/52		221
H01Q3/00	7	Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system {(means for positioning H01Q1/125)}	H01Q3/00	H01Q3/00		986
H01Q3/005	8	{using remotely controlled antenna positioning or scanning}	H01Q3/00	H01Q3/00		650
H01Q3/01	8	varying the shape of the antenna or antenna system	H01Q3/01	H01Q3/01		432
H01Q3/02	8	using mechanical movement of antenna or antenna system as a whole	H01Q3/02	H01Q3/02		2502
H01Q3/04	9	for varying one co-ordinate of the orientation	H01Q3/04	H01Q3/04		1224
H01Q3/06	10	over a restricted angle	H01Q3/06	H01Q3/06		754
H01Q3/08	9	for varying two co-ordinates of the orientation	H01Q3/08	H01Q3/08		2639
H01Q3/10	10	to produce a conical or spiral scan	H01Q3/10	H01Q3/10		140
H01Q3/12	8	using mechanical relative movement between primary active elements and secondary devices of antennas or antenna systems	H01Q3/12	H01Q3/12		280
H01Q3/14	9	for varying the relative position of primary active element and a refracting or diffracting device	H01Q3/14	H01Q3/14		315
H01Q3/16	9	for varying relative position of primary active element and a reflecting device	H01Q3/16	H01Q3/16		165
H01Q3/18	10	wherein the primary active element is movable and the reflecting device is fixed	H01Q3/18	H01Q3/18		327
H01Q3/20	10	wherein the primary active element is fixed and the reflecting device is movable	H01Q3/20	H01Q3/20		451
H01Q3/22	8	varying the orientation in accordance with variation of frequency of radiated wave	H01Q3/22	H01Q3/22		588
H01Q3/24	8	varying the orientation by switching energy from one active radiating element to another, e.g. for beam switching	H01Q3/24	H01Q3/24		2263
H01Q3/242	9	{Circumferential scanning}	H01Q3/24	H01Q3/24		351
H01Q3/245	9	{in the focal plane of a focussing device}	H01Q3/24	H01Q3/24		219
H01Q3/247	9	{by switching different parts of a primary active element}	H01Q3/24	H01Q3/24		490
H01Q3/26	8	varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture ({H01Q3/12,}H01Q3/22, H01Q3/24 take precedence)	H01Q3/26	H01Q3/26		2993
H01Q3/2605	9	{Array of radiating elements provided with a feedback control over the element weights, e.g. adaptive arrays}	H01Q3/26	H01Q3/26		1120
H01Q3/2611	10	{Means for null steering; Adaptive interference nulling}	H01Q3/26	H01Q3/26		391
H01Q3/2617	11	{Array of identical elements}	H01Q3/26	H01Q3/26		229
H01Q3/2623	12	{composed of two antennas}	H01Q3/26	H01Q3/26		60
H01Q3/2629	11	{Combination of a main antenna unit with an auxiliary antenna unit}	H01Q3/26	H01Q3/26		123
H01Q3/2635	12	{the auxiliary unit being composed of a plurality of antennas}	H01Q3/26	H01Q3/26		103
H01Q3/2641	13	{being secundary elements, e.g. reactively steered}	H01Q3/26	H01Q3/26		13
H01Q3/2647	10	{Retrodirective arrays}	H01Q3/26	H01Q3/26		121
H01Q3/2652	10	{Self-phasing arrays}	H01Q3/26	H01Q3/26		70
H01Q3/2658	9	{Phased-array fed focussing structure}	H01Q3/26	H01Q3/26		296
H01Q3/2664	9	{electrically moving the phase centre of a radiating element in the focal plane of a focussing device (switching H01Q3/245, phased-array feeds H01Q3/2658)}	H01Q3/26	H01Q3/26		51
H01Q3/267	9	{Phased-array testing or checking devices}	H01Q3/26	H01Q3/26		1371
H01Q3/2676	9	{Optically controlled phased array}	H01Q3/26	H01Q3/26		557
H01Q3/2682	9	{Time delay steered arrays}	H01Q3/26	H01Q3/26		339
H01Q3/2688	10	{using acoustic or magnetostatic wave devices}	H01Q3/26	H01Q3/26		12
H01Q3/2694	10	{using also variable phase-shifters (H01Q3/2688 takes precedence)}	H01Q3/26	H01Q3/26		125
H01Q3/28	9	varying the amplitude	H01Q3/28	H01Q3/28		824
H01Q3/30	9	varying the {relative} phase {between the radiating elements of an array (H01Q3/2605, H01Q3/2658, H01Q3/2682, H01Q3/44 take precedence)}	H01Q3/30	H01Q3/30		2109
H01Q3/32	10	by mechanical means	H01Q3/32	H01Q3/32		979
H01Q3/34	10	by electrical means (active lenses or reflecting arrays H01Q3/46)	H01Q3/34	H01Q3/34		2091
H01Q3/36	11	with variable phase-shifters	H01Q3/36	H01Q3/36		2010
H01Q3/38	12	the phase-shifters being digital	H01Q3/38	H01Q3/38		584
H01Q3/385	13	{Scan control logics}	H01Q3/38	H01Q3/38		123
H01Q3/40	11	with phasing matrix	H01Q3/40	H01Q3/40		755
H01Q3/42	11	using frequency-mixing {(H01Q3/2676 takes precedence)}	H01Q3/42	H01Q3/42		191
H01Q3/44	8	varying the electric or magnetic characteristics of reflecting, refracting, or diffracting devices associated with the radiating element	H01Q3/44	H01Q3/44		964
H01Q3/443	9	{varying the phase velocity along a leaky transmission line (frequency scanning H01Q3/22; non-resonant leaky-waveguide or transmission-line aerials H01Q13/20)}	H01Q3/44	H01Q3/44		130
H01Q3/446	9	{the radiating element being at the centre of one or more rings of auxiliary elements}	H01Q3/44	H01Q3/44		159
H01Q3/46	9	Active lenses or reflecting arrays	H01Q3/46	H01Q3/46		1125
H01Q5/00	7	Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements (combinations of separate active antenna units operating in different wavebands and connected to a common feeder system H01Q21/30)	H01Q5/00	H01Q5/00		966
H01Q5/10	8	Resonant antennas	H01Q5/10	H01Q5/10		2631
H01Q5/15	9	for operation of centre-fed antennas comprising one or more collinear, substantially straight or elongated active elements	H01Q5/15	H01Q5/15		150
H01Q5/20	8	characterised by the operating wavebands	H01Q5/20	H01Q5/20		2218
H01Q5/22	9	RF wavebands combined with non-RF wavebands, e.g. infrared or optical	H01Q5/22	H01Q5/22		220
H01Q5/25	9	Ultra-wideband [UWB] systems, e.g. multiple resonance systems; Pulse systems	H01Q5/25	H01Q5/25		1372
H01Q5/28	9	Arrangements for establishing polarisation or beam width over two or more different wavebands	H01Q5/28	H01Q5/28		1544
H01Q5/30	8	Arrangements for providing operation on different wavebands	H01Q5/30	H01Q5/30		1358
H01Q5/307	9	Individual or coupled radiating elements, each element being fed in an unspecified way	H01Q5/307	H01Q5/307		2160
H01Q5/314	10	using frequency dependent circuits or components, e.g. trap circuits or capacitors	H01Q5/314	H01Q5/314		797
H01Q5/321	11	within a radiating element or between connected radiating elements	H01Q5/321	H01Q5/321		972
H01Q5/328	11	between a radiating element and ground	H01Q5/328	H01Q5/328		1013
H01Q5/335	11	at the feed, e.g. for impedance matching	H01Q5/335	H01Q5/335		1704
H01Q5/342	10	for different propagation modes (H01Q5/314 takes precedence)	H01Q5/342	H01Q5/342		124
H01Q5/35	11	using two or more simultaneously fed points	H01Q5/35	H01Q5/35		839
H01Q5/357	11	using a single feed point	H01Q5/357	H01Q5/357		823
H01Q5/364	12	Creating multiple current paths	H01Q5/364	H01Q5/364		705
H01Q5/371	13	Branching current paths	H01Q5/371	H01Q5/371		2325
H01Q5/378	9	Combination of fed elements with parasitic elements	H01Q5/378	H01Q5/378		1819
H01Q5/385	10	Two or more parasitic elements	H01Q5/385	H01Q5/385		724
H01Q5/392	10	the parasitic elements having dual-band or multi-band characteristics	H01Q5/392	H01Q5/392		278
H01Q5/40	8	Imbricated or interleaved structures; Combined or electromagnetically coupled arrangements, e.g. comprising two or more non-connected fed radiating elements	H01Q5/40	H01Q5/40		1499
H01Q5/42	9	using two or more imbricated arrays (H01Q5/49 takes precedence)	H01Q5/42	H01Q5/42		753
H01Q5/45	9	using two or more feeds in association with a common reflecting, diffracting or refracting device	H01Q5/45	H01Q5/45		430
H01Q5/47	10	with a coaxial arrangement of the feeds	H01Q5/47	H01Q5/47		134
H01Q5/48	9	Combinations of two or more dipole type antennas	H01Q5/48	H01Q5/48		483
H01Q5/49	10	with parasitic elements used for purposes other than for dual-band or multi-band, e.g. imbricated Yagi antennas	H01Q5/49	H01Q5/49		231
H01Q5/50	8	Feeding or matching arrangements for broad-band or multi-band operation	H01Q5/50	H01Q5/50		2924
H01Q5/55	9	for horn or waveguide antennas	H01Q5/55	H01Q5/55		242
H01Q7/00	7	Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop	H01Q7/00	H01Q7/00		6733
H01Q7/005	8	{with variable reactance for tuning the antenna}	H01Q7/00	H01Q7/00		528
H01Q7/02	8	Collapsible antennas; Retractable antennas	H01Q7/02	H01Q7/02		190
H01Q7/04	8	Screened antennas (H01Q7/02, H01Q7/06 take precedence)	H01Q7/04	H01Q7/04		391
H01Q7/06	8	with core of ferromagnetic material (H01Q7/02 takes precedence)	H01Q7/06	H01Q7/06		1180
H01Q7/08	9	Ferrite rod or like elongated core	H01Q7/08	H01Q7/08		967
H01Q9/00	7	Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements	H01Q9/00	H01Q9/00		132
H01Q9/005	8	{for radiating non-sinusoidal waves}	H01Q9/00	H01Q9/00		45
H01Q9/02	8	Non-resonant antennas	H01Q9/02	H01Q9/02		30
H01Q9/04	8	Resonant antennas	H01Q9/04	H01Q9/04		994
H01Q9/0407	9	{Substantially flat resonant element parallel to ground plane, e.g. patch antenna (dipole H01Q9/285; monopole H01Q9/40)}	H01Q9/04	H01Q9/04		5743
H01Q9/0414	10	{in a stacked or folded configuration}	H01Q9/04	H01Q9/04		2371
H01Q9/0421	10	{with a shorting wall or a shorting pin at one end of the element (H01Q9/0414 takes precedence)}	H01Q9/04	H01Q9/04		3429
H01Q9/0428	10	{radiating a circular polarised wave}	H01Q9/04	H01Q9/04		1006
H01Q9/0435	11	{using two feed points}	H01Q9/04	H01Q9/04		626
H01Q9/0442	10	{with particular tuning means}	H01Q9/04	H01Q9/04		1443
H01Q9/045	10	{with particular feeding means (for circular polarisation H01Q9/0428)}	H01Q9/04	H01Q9/04		2041
H01Q9/0457	11	{electromagnetically coupled to the feed line}	H01Q9/04	H01Q9/04		1237
H01Q9/0464	10	{Annular ring patch}	H01Q9/04	H01Q9/04		421
H01Q9/0471	10	{Non-planar, stepped or wedge-shaped patch}	H01Q9/04	H01Q9/04		220
H01Q9/0478	10	{with means for suppressing spurious modes, e.g. cross polarisation}	H01Q9/04	H01Q9/04		106
H01Q9/0485	9	{Dielectric resonator antennas}	H01Q9/04	H01Q9/04		832
H01Q9/0492	10	{circularly polarised}	H01Q9/04	H01Q9/04		124
H01Q9/06	9	Details	H01Q9/06	H01Q9/06		215
H01Q9/065	10	{Microstrip dipole antennas (patch antenna H01Q9/0407)}	H01Q9/06	H01Q9/06		975
H01Q9/08	10	Junction boxes specially adapted for supporting adjacent ends of collinear rigid elements	H01Q9/08	H01Q9/08		89
H01Q9/10	10	Junction boxes specially adapted for supporting adjacent ends of divergent elements	H01Q9/10	H01Q9/10		22
H01Q9/12	11	adapted for adjustment of angle between elements	H01Q9/12	H01Q9/12		39
H01Q9/14	10	Length of element or elements adjustable (telescopic elements H01Q1/10)	H01Q9/14	H01Q9/14		539
H01Q9/145	11	{by varying the electrical length}	H01Q9/14	H01Q9/14		402
H01Q9/16	9	with feed intermediate between the extremities of the antenna, e.g. centre-fed dipole (H01Q9/44 takes precedence)	H01Q9/16	H01Q9/16		2825
H01Q9/18	10	Vertical disposition of the antenna	H01Q9/18	H01Q9/18		278
H01Q9/20	10	Two collinear substantially straight active elements; Substantially straight single active elements (H01Q9/28 takes precedence)	H01Q9/20	H01Q9/20		188
H01Q9/22	11	Rigid rod or equivalent tubular element or elements	H01Q9/22	H01Q9/22		126
H01Q9/24	11	Shunt feed arrangements to single active elements, e.g. for delta matching	H01Q9/24	H01Q9/24		106
H01Q9/26	10	with folded element or elements, the folded parts being spaced apart a small fraction of operating wavelength (resonant loop antennas H01Q7/00)	H01Q9/26	H01Q9/26		1201
H01Q9/265	11	{Open ring dipoles; Circular dipoles}	H01Q9/26	H01Q9/26		290
H01Q9/27	11	Spiral antennas	H01Q9/27	H01Q9/27		883
H01Q9/28	10	Conical, cylindrical, cage, strip, gauze, or like elements having an extended radiating surface; Elements comprising two conical surfaces having collinear axes and adjacent apices and fed by two-conductor transmission lines (waveguide horns or mouths H01Q13/00; slot antennas H01Q13/00)	H01Q9/28	H01Q9/28		1510
H01Q9/285	11	{Planar dipole (H01Q9/065 takes precedence; patch antenna H01Q9/0407)}	H01Q9/28	H01Q9/28		2154
H01Q9/30	9	with feed to end of elongated active element, e.g. unipole (H01Q9/44 takes precedence)	H01Q9/30	H01Q9/30		2153
H01Q9/32	10	Vertical arrangement of element (H01Q9/40 takes precedence)	H01Q9/32	H01Q9/32		552
H01Q9/34	11	Mast, tower, or like self-supporting or stay-supported antennas	H01Q9/34	H01Q9/34		142
H01Q9/36	11	with top loading	H01Q9/36	H01Q9/36		488
H01Q9/38	11	with counterpoise (with counterpoise comprising elongated elements coplanar with the active element H01Q9/44)	H01Q9/38	H01Q9/38		193
H01Q9/40	10	Element having extended radiating surface	H01Q9/40	H01Q9/40		1903
H01Q9/42	10	with folded element, the folded parts being spaced apart a small fraction of the operating wavelength	H01Q9/42	H01Q9/42		4728
H01Q9/43	11	Scimitar antennas	H01Q9/43	H01Q9/43		31
H01Q9/44	9	with a plurality of divergent straight elements, e.g. V-dipole, X-antenna; with a plurality of elements having mutually inclined substantially straight portions (combinations of two or more active elements H01Q21/00; turnstile antennas&#160;H01Q21/26)	H01Q9/44	H01Q9/44		316
H01Q9/46	10	with rigid elements diverging from single point	H01Q9/46	H01Q9/46		84
H01Q11/00	7	Electrically-long antennas having dimensions more than twice the shortest operating wavelength and consisting of conductive active radiating elements (leaky waveguides antennas or slot antennas H01Q13/00)	H01Q11/00	H01Q11/00		29
H01Q11/02	8	Non-resonant antennas, e.g. travelling-wave antenna (Yagi antennas H01Q19/30)	H01Q11/02	H01Q11/02		124
H01Q11/04	9	with parts bent, folded, shaped, screened&#160;or electrically loaded to obtain desired phase relation of radiation from selected sections of the antenna (H01Q11/06 &#8211; H01Q11/10 take precedence)	H01Q11/04	H01Q11/04		202
H01Q11/06	9	Rhombic antennas; V-antennas	H01Q11/06	H01Q11/06		128
H01Q11/08	9	Helical antennas	H01Q11/08	H01Q11/08		1597
H01Q11/083	10	{Tapered helical aerials, e.g. conical spiral aerials}	H01Q11/08	H01Q11/08		129
H01Q11/086	10	{collapsible}	H01Q11/08	H01Q11/08		60
H01Q11/10	9	Logperiodic antennas (H01Q11/08 takes precedence)	H01Q11/10	H01Q11/10		487
H01Q11/105	10	{using a dielectric support}	H01Q11/10	H01Q11/10		141
H01Q11/12	8	Resonant antennas	H01Q11/12	H01Q11/12		99
H01Q11/14	9	with parts bent, folded, shaped&#160;or screened&#160;or with phasing impedances, to obtain desired phase relation of radiation from selected sections of the antenna or to obtain desired polarisation effect (H01Q11/20 takes precedence)	H01Q11/14	H01Q11/14		136
H01Q11/16	10	in which the selected sections are collinear	H01Q11/16	H01Q11/16		24
H01Q11/18	10	in which the selected sections are parallelly spaced	H01Q11/18	H01Q11/18		14
H01Q11/20	9	V-antennas	H01Q11/20	H01Q11/20		8
H01Q13/00	7	Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave	H01Q13/00	H01Q13/00		300
H01Q13/02	8	Waveguide horns	H01Q13/02	H01Q13/02		1899
H01Q13/0208	9	{Corrugated horns (waveguide mouth antenna with corrugated flange H01Q13/065; manufacturing details H01Q13/0283)}	H01Q13/02	H01Q13/02		298
H01Q13/0216	10	{Dual-depth corrugated horns}	H01Q13/02	H01Q13/02		28
H01Q13/0225	10	{of non-circular cross-section (H01Q13/0216 takes precedence)}	H01Q13/02	H01Q13/02		97
H01Q13/0233	9	{Horns fed by a slotted waveguide array (biconical horns H01Q13/06)}	H01Q13/02	H01Q13/02		154
H01Q13/0241	9	{radiating a circularly polarised wave (H01Q13/0258 takes precedence; polarisation converters H01Q15/244, in a waveguide H01P1/17)}	H01Q13/02	H01Q13/02		230
H01Q13/025	9	{Multimode horn antennas; Horns using higher mode of propagation (H01Q13/0241 takes precedence; multiple beam H01Q25/04)}	H01Q13/02	H01Q13/02		207
H01Q13/0258	10	{Orthomode horns (orthomode transducers H01P1/161)}	H01Q13/02	H01Q13/02		270
H01Q13/0266	9	{provided with a flange or a choke}	H01Q13/02	H01Q13/02		112
H01Q13/0275	9	{Ridged horns (slot-line radiating ends H01Q13/085)}	H01Q13/02	H01Q13/02		263
H01Q13/0283	9	{Apparatus or processes specially provided for manufacturing horns}	H01Q13/02	H01Q13/02		178
H01Q13/0291	10	{for corrugated horns}	H01Q13/02	H01Q13/02		50
H01Q13/04	9	Biconical horns (biconical dipoles comprising two conical surfaces having collinear axes and adjacent apices and fed by a two-conductor transmission line H01Q9/28)	H01Q13/04	H01Q13/04		169
H01Q13/06	8	Waveguide mouths (horns H01Q13/02)	H01Q13/06	H01Q13/06		610
H01Q13/065	9	{provided with a flange or a choke}	H01Q13/06	H01Q13/06		108
H01Q13/08	8	Radiating ends of two-conductor microwave transmission lines, e.g. of coaxial lines, of microstrip lines	H01Q13/08	H01Q13/08		2154
H01Q13/085	9	{Slot-line radiating ends}	H01Q13/08	H01Q13/08		745
H01Q13/10	8	Resonant slot antennas	H01Q13/10	H01Q13/10		3929
H01Q13/103	9	{with variable reactance for tuning the antenna (tuning resonant circuits H03J)}	H01Q13/10	H01Q13/10		280
H01Q13/106	9	{Microstrip slot antennas (patch antenna elements H01Q9/0407)}	H01Q13/10	H01Q13/10		1455
H01Q13/12	9	Longitudinally slotted cylinder antennas; Equivalent structures	H01Q13/12	H01Q13/12		215
H01Q13/14	10	Skeleton cylinder antennas	H01Q13/14	H01Q13/14		10
H01Q13/16	9	Folded slot antennas	H01Q13/16	H01Q13/16		378
H01Q13/18	9	the slot being backed by, or formed in boundary wall of, a resonant cavity (longitudinally slotted cylinder H01Q13/12){; Open cavity antennas}	H01Q13/18	H01Q13/18		1048
H01Q13/20	8	Non-resonant leaky-waveguide or transmission-line antennas; Equivalent structures causing radiation along the transmission path of a guided wave	H01Q13/20	H01Q13/20		600
H01Q13/203	9	{Leaky coaxial lines}	H01Q13/20	H01Q13/20		478
H01Q13/206	9	{Microstrip transmission line antennas}	H01Q13/20	H01Q13/20		514
H01Q13/22	9	Longitudinal slot in boundary wall of waveguide or transmission line {(H01Q13/203 takes precedence)}	H01Q13/22	H01Q13/22		493
H01Q13/24	9	constituted by a dielectric or ferromagnetic rod or pipe (H01Q13/28 takes precedence)	H01Q13/24	H01Q13/24		404
H01Q13/26	9	Surface waveguide constituted by a single conductor, e.g. strip conductor	H01Q13/26	H01Q13/26		119
H01Q13/28	9	comprising elements constituting electric discontinuities and spaced in direction of wave propagation, e.g. dielectric elements&#160;or conductive elements forming artificial dielectric	H01Q13/28	H01Q13/28		347
H01Q15/00	7	Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices (variable for purpose of altering directivity H01Q3/00; arrangements of such devices for guiding waves H01P3/20; variable for purpose of modulation H03C7/02)	H01Q15/00	H01Q15/00		385
H01Q15/0006	8	{Devices acting selectively as reflecting surface, as diffracting or as refracting device, e.g. frequency filtering or angular spatial filtering devices (H01Q15/12, H01Q15/22, H01Q15/24 take precedence)}	H01Q15/00	H01Q15/00		325
H01Q15/0013	9	{said selective devices working as frequency-selective reflecting surfaces, e.g. FSS, dichroic plates, surfaces being partly transmissive and reflective}	H01Q15/00	H01Q15/00		1189
H01Q15/002	10	{said selective devices being reconfigurable or tunable, e.g. using switches or diodes}	H01Q15/00	H01Q15/00		1073
H01Q15/0026	10	{said selective devices having a stacked geometry or having multiple layers}	H01Q15/00	H01Q15/00		1185
H01Q15/0033	10	{used for beam splitting or combining, e.g. acting as a quasi-optical multiplexer (H01Q19/191 and H01Q19/195 take precedence)}	H01Q15/00	H01Q15/00		106
H01Q15/004	10	{using superconducting materials or magnetised substrates}	H01Q15/00	H01Q15/00		192
H01Q15/0046	10	{Theoretical analysis and design methods of such selective devices}	H01Q15/00	H01Q15/00		250
H01Q15/0053	9	{Selective devices used as spatial filter or angular sidelobe filter}	H01Q15/00	H01Q15/00		336
H01Q15/006	9	{Selective devices having photonic band gap materials or materials of which the material properties are frequency dependent, e.g. perforated substrates, high-impedance surfaces}	H01Q15/00	H01Q15/00		439
H01Q15/0066	10	{said selective devices being reconfigurable, tunable or controllable, e.g. using switches}	H01Q15/00	H01Q15/00		194
H01Q15/0073	10	{said selective devices having corrugations}	H01Q15/00	H01Q15/00		33
H01Q15/008	10	{said selective devices having Sievenpipers&apos; mushroom elements}	H01Q15/00	H01Q15/00		255
H01Q15/0086	9	{said selective devices having materials with a synthesized negative refractive index, e.g. metamaterials or left-handed materials}	H01Q15/00	H01Q15/00		3433
H01Q15/0093	9	{having a fractal shape}	H01Q15/00	H01Q15/00		89
H01Q15/02	8	Refracting or diffracting devices, e.g. lens, prism	H01Q15/02	H01Q15/02		1216
H01Q15/04	9	comprising wave-guiding channel or channels bounded by effective conductive surfaces substantially perpendicular to the electric vector of the wave, e.g. parallel-plate waveguide lens	H01Q15/04	H01Q15/04		136
H01Q15/06	9	comprising plurality of wave-guiding channels of different length	H01Q15/06	H01Q15/06		79
H01Q15/08	9	formed of solid dielectric material	H01Q15/08	H01Q15/08		1011
H01Q15/10	9	comprising three-dimensional [3D] array of impedance discontinuities, e.g. holes in conductive surfaces or conductive discs forming artificial dielectric	H01Q15/10	H01Q15/10		251
H01Q15/12	9	functioning also as polarisation filter {(polarisation converters H01Q15/242)}	H01Q15/12	H01Q15/12		111
H01Q15/14	8	Reflecting surfaces; Equivalent structures {(electromagnetic shields H01Q1/526)}	H01Q15/14	H01Q15/14		3239
H01Q15/141	9	{Apparatus or processes specially adapted for manufacturing reflecting surfaces}	H01Q15/14	H01Q15/14		396
H01Q15/142	10	{using insulating material for supporting the reflecting surface}	H01Q15/14	H01Q15/14		300
H01Q15/144	11	{with a honeycomb, cellular or foamed sandwich structure}	H01Q15/14	H01Q15/14		106
H01Q15/145	9	{comprising a plurality of reflecting particles, e.g. radar chaff (missiles of the signal type provided with means for disseminating radar-reflecting chaff F42B12/70)}	H01Q15/14	H01Q15/14		202
H01Q15/147	9	{provided with means for controlling or monitoring the shape of the reflecting surface (for scanning H01Q3/01; aerials or aerial systems providing multiple beamwidths H01Q25/002)}	H01Q15/14	H01Q15/14		262
H01Q15/148	9	{with means for varying the reflecting properties (H01Q15/147 takes precedence)}	H01Q15/14	H01Q15/14		424
H01Q15/16	9	curved in two dimensions [2D], e.g. paraboloidal	H01Q15/16	H01Q15/16		1124
H01Q15/161	10	{Collapsible reflectors}	H01Q15/16	H01Q15/16		497
H01Q15/162	11	{composed of a plurality of rigid panels}	H01Q15/16	H01Q15/16		174
H01Q15/163	11	{inflatable}	H01Q15/16	H01Q15/16		95
H01Q15/165	10	{composed of a plurality of rigid panels (collapsible H01Q15/161)}	H01Q15/16	H01Q15/16		100
H01Q15/166	11	{sector shaped}	H01Q15/16	H01Q15/16		44
H01Q15/167	11	{comprising a gap between adjacent panels or group of panels, e.g. stepped reflectors}	H01Q15/16	H01Q15/16		29
H01Q15/168	10	{Mesh reflectors mounted on a non-collapsible frame}	H01Q15/16	H01Q15/16		105
H01Q15/18	9	comprising plurality of mutually inclined plane surfaces, e.g. corner reflector {(H01Q15/16 takes precedence)}	H01Q15/18	H01Q15/18		513
H01Q15/20	10	Collapsible reflectors	H01Q15/20	H01Q15/20		243
H01Q15/22	9	functioning also as polarisation filter	H01Q15/22	H01Q15/22		194
H01Q15/23	8	Combinations of reflecting surfaces with refracting or diffracting devices	H01Q15/23	H01Q15/23		199
H01Q15/24	8	Polarising devices; Polarisation filters&#160; (H01Q15/12, H01Q15/22 take precedence)	H01Q15/24	H01Q15/24		1840
H01Q15/242	9	{Polarisation converters}	H01Q15/24	H01Q15/24		592
H01Q15/244	10	{converting a linear polarised wave into a circular polarised wave (guided wave H01P1/17)}	H01Q15/24	H01Q15/24		440
H01Q15/246	10	{rotating the plane of polarisation of a linear polarised wave (guided wave H01P1/165)}	H01Q15/24	H01Q15/24		141
H01Q15/248	11	{using a reflecting surface, e.g. twist reflector (combination with a polarisation filter in dual reflector antennas H01Q19/195)}	H01Q15/24	H01Q15/24		69
H01Q17/00	7	Devices for absorbing waves radiated from an antenna; Combinations of such devices with active antenna elements or systems	H01Q17/00	H01Q17/00		2855
H01Q17/001	8	{for modifying the directional characteristic of an aerial}	H01Q17/00	H01Q17/00		461
H01Q17/002	8	{using short elongated elements as dissipative material, e.g. metallic threads or flake-like particles}	H01Q17/00	H01Q17/00		247
H01Q17/004	8	{using non-directional dissipative particles, e.g. ferrite powders (H01Q17/005 takes precedence; flake-like H01Q17/002)}	H01Q17/00	H01Q17/00		464
H01Q17/005	8	{using woven or wound filaments; impregnated nets or clothes}	H01Q17/00	H01Q17/00		185
H01Q17/007	8	{with means for controlling the absorption}	H01Q17/00	H01Q17/00		503
H01Q17/008	8	{with a particular shape (H01Q17/007 takes precedence)}	H01Q17/00	H01Q17/00		1114
H01Q19/00	7	Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic {(combination of horns with slotted waveguide array H01Q13/0233)}	H01Q19/00	H01Q19/00		186
H01Q19/005	8	{Patch antenna using one or more coplanar parasitic elements}	H01Q19/00	H01Q19/00		668
H01Q19/02	8	Details {(fastening of an element on a boom H01Q1/1228)}	H01Q19/02	H01Q19/02		280
H01Q19/021	9	{Means for reducing undesirable effects}	H01Q19/02	H01Q19/02		198
H01Q19/022	10	{for reducing the edge scattering of reflectors}	H01Q19/02	H01Q19/02		62
H01Q19/023	10	{for reducing the scattering of mounting structures, e.g. of the struts}	H01Q19/02	H01Q19/02		44
H01Q19/025	10	{for optimizing the matching of the primary feed, e.g. vertex plates}	H01Q19/02	H01Q19/02		58
H01Q19/026	10	{for reducing the primary feed spill-over}	H01Q19/02	H01Q19/02		45
H01Q19/027	10	{for compensating or reducing aperture blockage (offset feeding H01Q19/132, H01Q19/192)}	H01Q19/02	H01Q19/02		32
H01Q19/028	10	{for reducing the cross polarisation}	H01Q19/02	H01Q19/02		77
H01Q19/04	9	Means for collapsing H-antennas or Yagi antennas	H01Q19/04	H01Q19/04		122
H01Q19/06	8	using refracting or diffracting devices, e.g. lens {(radome H01Q1/42)}	H01Q19/06	H01Q19/06		1161
H01Q19/062	9	{for focusing}	H01Q19/06	H01Q19/06		869
H01Q19/065	10	{Zone plate type antennas}	H01Q19/06	H01Q19/06		111
H01Q19/067	9	{using a hologram}	H01Q19/06	H01Q19/06		56
H01Q19/08	9	for modifying the radiation pattern of a radiating horn in which it is located {(corrugated horns H01Q13/0208; producing a circular polarisation H01Q13/0241)}	H01Q19/08	H01Q19/08		481
H01Q19/09	9	wherein the primary active element is coated with or embedded in a dielectric or magnetic material (protective material&#160;H01Q1/40, varying the electric or magnetic characteristics of refracting or diffracting devices H01Q3/44)	H01Q19/09	H01Q19/09		187
H01Q19/10	8	using reflecting surfaces	H01Q19/10	H01Q19/10		2328
H01Q19/102	9	{wherein the surfaces are of convex toro&#239;dal shape (biconical horns H01Q13/04)}	H01Q19/10	H01Q19/10		88
H01Q19/104	9	{using a substantially flat reflector for deflecting the radiated beam, e.g. periscopic antennas (periscopic fed Cassegrain antennas H01Q19/191; passive relays H04B7/145)}	H01Q19/10	H01Q19/10		790
H01Q19/106	9	{using two or more intersecting plane surfaces, e.g. corner reflector antennas}	H01Q19/10	H01Q19/10		425
H01Q19/108	9	{Combination of a dipole with a plane reflecting surface (H01Q19/106 takes precedence; strip line H01Q9/065)}	H01Q19/10	H01Q19/10		643
H01Q19/12	9	wherein the surfaces are concave (H01Q19/18 takes precedence)	H01Q19/12	H01Q19/12		787
H01Q19/13	10	the primary radiating source being a single radiating element, e.g. a dipole, a slot, a waveguide termination (H01Q19/15 takes precedence)	H01Q19/13	H01Q19/13		604
H01Q19/132	11	{Horn reflector antennas; Off-set feeding}	H01Q19/13	H01Q19/13		432
H01Q19/134	11	{Rear-feeds; Splash plate feeds}	H01Q19/13	H01Q19/13		234
H01Q19/136	12	{cross-polarised}	H01Q19/13	H01Q19/13		54
H01Q19/138	11	{Parallel-plate feeds, e.g. pill-box, cheese aerials}	H01Q19/13	H01Q19/13		71
H01Q19/15	10	the primary radiating source being a line source, e.g. leaky waveguide antennas	H01Q19/15	H01Q19/15		72
H01Q19/17	10	the primary radiating source comprising two or more radiating elements (H01Q19/15, H01Q25/00 take precedence)	H01Q19/17	H01Q19/17		655
H01Q19/175	11	{arrayed along the focal line of a cylindrical focusing surface}	H01Q19/17	H01Q19/17		131
H01Q19/18	9	having two or more spaced reflecting surfaces (H01Q19/20 takes precedence)	H01Q19/18	H01Q19/18		266
H01Q19/185	10	wherein the surfaces are plane	H01Q19/185	H01Q19/185		260
H01Q19/19	10	comprising one main concave reflecting surface associated with an auxiliary reflecting surface	H01Q19/19	H01Q19/19		629
H01Q19/191	11	{wherein the primary active element uses one or more deflecting surfaces, e.g. beam waveguide feeds}	H01Q19/19	H01Q19/19		178
H01Q19/192	11	{with dual offset reflectors}	H01Q19/19	H01Q19/19		191
H01Q19/193	11	{with feed supported subreflector (splash plate feeds H01Q19/134)}	H01Q19/19	H01Q19/19		183
H01Q19/195	11	wherein a reflecting surface acts also as a polarisation filter or a polarising device	H01Q19/195	H01Q19/195		174
H01Q19/20	8	Producing pencil beam by two cylindrical focusing devices with their focal lines orthogonally disposed	H01Q19/20	H01Q19/20		29
H01Q19/22	8	using a secondary device in the form of a single substantially straight conductive element	H01Q19/22	H01Q19/22		133
H01Q19/24	9	the primary active element being centre-fed and substantially straight, e.g. H-antenna	H01Q19/24	H01Q19/24		140
H01Q19/26	9	the primary active element being end-fed and elongated	H01Q19/26	H01Q19/26		69
H01Q19/28	8	using a secondary device in the form of two or more substantially straight conductive elements (log- periodic antennas H01Q11/10; constituting a reflecting surface H01Q19/10)	H01Q19/28	H01Q19/28		229
H01Q19/30	9	the primary active element being centre-fed and substantially straight, e.g. Yagi antenna	H01Q19/30	H01Q19/30		1061
H01Q19/32	9	the primary active element being end-fed and elongated	H01Q19/32	H01Q19/32		200
H01Q21/00	7	Antenna arrays or systems (arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system H01Q3/00)<br><br><u>NOTE</u><br><br> This group includes: <br>arrays comprising two or more individually energised  similar active aerial units spaced apart; <br>combinations of different types of active aerials or  arrays; <br>combinations of substantially independant non-interacting  active aerials or arrays. 	H01Q21/00	H01Q21/00		5232
H01Q21/0006	8	{Particular feeding systems}	H01Q21/00	H01Q21/00		4001
H01Q21/0012	9	{Radial guide fed arrays}	H01Q21/00	H01Q21/00		215
H01Q21/0018	9	{Space- fed arrays}	H01Q21/00	H01Q21/00		137
H01Q21/0025	9	{Modular arrays}	H01Q21/00	H01Q21/00		1178
H01Q21/0031	9	{Parallel-plate fed arrays; Lens-fed arrays (multibeam arrays H01Q25/008)}	H01Q21/00	H01Q21/00		300
H01Q21/0037	9	{linear waveguide fed arrays}	H01Q21/00	H01Q21/00		370
H01Q21/0043	10	{Slotted waveguides (combination with horns H01Q13/0233)}	H01Q21/00	H01Q21/00		390
H01Q21/005	11	{Slotted waveguides arrays}	H01Q21/00	H01Q21/00		586
H01Q21/0056	12	{Conically or cylindrically arrayed}	H01Q21/00	H01Q21/00		61
H01Q21/0062	11	{the slots being disposed around the feeding waveguide}	H01Q21/00	H01Q21/00		48
H01Q21/0068	10	{Dielectric waveguide fed arrays}	H01Q21/00	H01Q21/00		78
H01Q21/0075	9	{Stripline fed arrays (H01Q21/065 takes precedence)}	H01Q21/00	H01Q21/00		1306
H01Q21/0081	10	{using suspended striplines}	H01Q21/00	H01Q21/00		104
H01Q21/0087	8	{Apparatus or processes specially adapted for manufacturing antenna arrays (manufacturing waveguides H01P11/00)}	H01Q21/00	H01Q21/00		1376
H01Q21/0093	9	{Monolithic arrays}	H01Q21/00	H01Q21/00		229
H01Q21/06	8	Arrays of individually energised antenna units similarly polarised and spaced apart	H01Q21/06	H01Q21/06		2056
H01Q21/061	9	{Two dimensional planar arrays}	H01Q21/06	H01Q21/06		2772
H01Q21/062	10	{using dipole aerials; (H01Q21/067, H01Q21/068 take precedence)}	H01Q21/06	H01Q21/06		1491
H01Q21/064	10	{using horn or slot aerials (slotted waveguides arrays H01Q21/005)}	H01Q21/06	H01Q21/06		1715
H01Q21/065	10	{Patch antenna array}	H01Q21/06	H01Q21/06		4809
H01Q21/067	10	{using endfire radiating aerial units transverse to the plane of the array}	H01Q21/06	H01Q21/06		265
H01Q21/068	10	{using parallel coplanar travelling wave or leaky wave aerial units (H01Q21/065 takes precedence)}	H01Q21/06	H01Q21/06		145
H01Q21/08	9	the units being spaced along or adjacent to a rectilinear path {(waveguide fed H01Q21/0037)}	H01Q21/08	H01Q21/08		2939
H01Q21/10	10	Collinear arrangements of substantially straight elongated conductive units	H01Q21/10	H01Q21/10		357
H01Q21/12	10	Parallel arrangements of substantially straight elongated conductive units (travelling-wave antennas comprising transmission line loaded with transverse elements H01Q11/02; Yagi antennas H01Q19/30)	H01Q21/12	H01Q21/12		378
H01Q21/14	11	Adcock antennas	H01Q21/14	H01Q21/14		47
H01Q21/16	12	U-type	H01Q21/16	H01Q21/16		9
H01Q21/18	12	H-type	H01Q21/18	H01Q21/18		26
H01Q21/20	9	the units being spaced along or adjacent to a curvilinear path {(slotted waveguide arrays H01Q21/005; circularly or helically slotted waveguides H01Q21/0062)}	H01Q21/20	H01Q21/20		1089
H01Q21/205	10	{providing an omnidirectional coverage (turnstile aerials H01Q21/26)}	H01Q21/20	H01Q21/20		1466
H01Q21/22	9	Antenna units of the array energised non-uniformly in amplitude or phase, e.g. tapered array or binomial array	H01Q21/22	H01Q21/22		895
H01Q21/225	10	{Finite focus antenna arrays}	H01Q21/22	H01Q21/22		20
H01Q21/24	8	Combinations of antenna units polarised in different directions for transmitting or receiving circularly and elliptically polarised waves or waves linearly polarised in any direction {(circularly polarised patch antennas H01Q9/0428; circularly polarised horns H01Q13/0241; cross-polarised horns H01Q13/0258; polarisation converters H01Q15/242; cross-polarised rear feeds H01Q19/136; crossed polarisation dual antenna H01Q25/001)}	H01Q21/24	H01Q21/24		4965
H01Q21/245	9	{provided with means for varying the polarisation&#160; (polarising devices&#160;H01Q15/24; tracking by comparing linear polarisation compounds&#160;G01S3/146; reducing depolarisation effects&#160;H04B7/00; polarisation diversity&#160;H04B7/10)}	H01Q21/24	H01Q21/24		723
H01Q21/26	9	Turnstile or like antennas comprising arrangements of three or more elongated elements disposed radially and symmetrically in a horizontal plane about a common centre	H01Q21/26	H01Q21/26		1538
H01Q21/28	8	Combinations of substantially independent non-interacting antenna units or systems {(multiple beam H01Q25/00)}	H01Q21/28	H01Q21/28		6336
H01Q21/29	8	Combinations of different interacting antenna units for giving a desired directional characteristic (H01Q25/00 takes precedence)	H01Q21/29	H01Q21/29		1810
H01Q21/293	9	{one unit or more being an array of identical aerial elements (adaptive arrays H01Q3/2605)}	H01Q21/29	H01Q21/29		440
H01Q21/296	10	{Multiplicative arrays}	H01Q21/29	H01Q21/29		43
H01Q21/30	8	Combinations of separate antenna units operating in different wavebands and connected to a common feeder system	H01Q21/30	H01Q21/30		2990
H01Q23/00	7	Antennas with active circuits or circuit elements integrated within them or attached to them<br><br><u>NOTE</u><br><br> This group covers only such combinations in which the type of antenna or antenna element is immaterial.<br> Combinations with a particular type of antenna are classified in the group appropriate to that type. 	H01Q23/00	H01Q23/00		4679
H01Q25/00	7	Antennas or antenna systems providing at least two radiating patterns (arrangements for changing or varying the orientation or the shape of the directional pattern H01Q3/00)	H01Q25/00	H01Q25/00		1670
H01Q25/001	8	{Crossed polarisation dual antennas (orthomode horns H01Q13/0258; cross-polarised rear feeds H01Q19/136; orthomode transducers H01P1/161)}	H01Q25/00	H01Q25/00		812
H01Q25/002	8	{providing at least two patterns of different beamwidth; Variable beamwidth antennas}	H01Q25/00	H01Q25/00		552
H01Q25/004	8	{providing two or four symmetrical beams for Janus application}	H01Q25/00	H01Q25/00		95
H01Q25/005	8	{providing two patterns of opposite direction; back to back antennas (H01Q25/004 takes precedence)}	H01Q25/00	H01Q25/00		354
H01Q25/007	8	{using two or more primary active elements in the focal region of a focusing device (for operation on different wavebands H01Q5/22)}	H01Q25/00	H01Q25/00		477
H01Q25/008	9	{lens fed multibeam arrays}	H01Q25/00	H01Q25/00		262
H01Q25/02	8	providing sum and difference patterns (H01Q25/04 takes precedence)	H01Q25/02	H01Q25/02		633
H01Q25/04	8	Multimode antennas {(corrugated horns H01Q13/0208)}	H01Q25/04	H01Q25/04		643
