ClassID:

214527

H01Q21/245 - page 2 - CPC Classification

Classification description:

Antenna arrays or systems; Combinations of antenna units polarised in different directions for transmitting or receiving circularly and elliptically polarised waves or waves linearly polarised in any direction provided with means for varying the polarisation

Recent Application in this class:
#301
20110050515
2011-03-03

Calculating antenna performance

#302
20110032159
2011-02-10

Antenna Apparatus with Adaptive Polarization Switching Function

#303
20110032079
2011-02-10

Antenna switching arrangement

#304
20110006948
2011-01-13

ONBOARD ANTENNA SYSTEM FOR SATELLITE TRACKING WITH POLARIZATION CONTROL

#305
20100297971
2010-11-25

Electronic device with an improved antenna arrangement

#306
20100295728
2010-11-25

ARRAY ANTENNA

#307
20100277394
2010-11-04

Adaptive adjustment of an antenna arrangement for exploiting polarization and/or beamforming separation

#308
20100253585
2010-10-07

Sub-array polarization control using rotated dual polarized radiating elements

#309
20100207818
2010-08-19

Robust VSAT tracking algorithm

#310
20100184386
2010-07-22

Apparatus and method for controlling a signal

#311
20100136916
2010-06-03

Orthogonal cross polarization interference compensating device, demodulator, receiving station, and method of compensating cross-polarization interference

#312
20100117902
2010-05-13

Slot antenna and method for its operation

#313
20100060457
2010-03-11

Elongated twin feed line RFID antenna with distributed radiation perturbations

#314
20090315792
2009-12-24

Antenna apparatus utilizing small loop antenna element having minute length and two feeding points

#315
20090219144
2009-09-03

Method of Utilizing Parametric Reflective Technology

#316
20090195361
2009-08-06

Array antenna system and algorithm applicable to RFID readers

#317
20090179814
2009-07-16

Dual polarization broadband antenna having with single pattern

#318
20090174596
2009-07-09

Polarization-modulated transmitter for a weather radar

#319
20090160724
2009-06-25

Polarization agile antenna

#320
20090075606
2009-03-19

Vertical multiple-input multiple-output wireless antennas

#321
20090051618
2009-02-26

Multiple input multiple output (mimo) antenna system adaptable for environmental multiplicity

#322
20090009417
2009-01-08

Polarization switching/variable directivity antenna

#323
20080291098
2008-11-27

Coverage antenna apparatus with selectable horizontal and vertical polarization elements

#324
20080218424
2008-09-11

Device and method for polarization control for a phased array antenna

#325
20080204349
2008-08-28

Horizontal multiple-input multiple-output wireless antennas

#326
20080186251
2008-08-07

Systems and methods for a multi-mode reconfigurable sector antenna

#327
20080139136
2008-06-12

Multiple-input multiple-output wireless antennas

#328
20080129641
2008-06-05

Antenna apparatus for linearly polarized diversity antenna in RFID reader and method of controlling the antenna apparatus

#329
20070296641
2007-12-27

Multi-band circular polarity elliptical horn antenna

#330
20070285314
2007-12-13

Phased array systems and phased array front-end devices

#331
20070268193
2007-11-22

Antenna device for a radio base station in a cellular telephony system

#332
20070188398
2007-08-16

High power, polarization-diverse cloverleaf phased array

#333
20070097007
2007-05-03

Polarization diversity antenna system

#334
20060220959
2006-10-05

Compact diversity antenna

#335
20060131414
2006-06-22

MIMO wireless communication system and wireless communication apparatuses

#336
20060105730
2006-05-18

Antenna arrangement for multi-input multi-output wireless local area network

#337
20060050000
2006-03-09

Antenna device, radio device, and electronic instrument

#338
20060044190
2006-03-02

Rotatable microstrip patch antenna and array antenna using the same

#339
20050280539
2005-12-22

RFID system utilizing parametric reradiated technology

#340
20050280504
2005-12-22

RFID system utilizing parametric reflective technology

#341
20050179605
2005-08-18

Array antenna apparatus capable of switching direction attaining low gain

#342
20050174294
2005-08-11

Switchable slot antenna

#343
20050062656
2005-03-24

Internal diversity antenna

#344
20050057419
2005-03-17

Antenna with polarization diversity

#345
20050020310
2005-01-27

MIMO wireless communication system and wireless communication apparatuses

#346
20050017897
2005-01-27

Apparatus and methods for radome depolarization compensation

#347
18747471
2025-11-04

Dual circularly polarized antenna structure

#348
18239383
2024-10-22

Antenna and PCB layout topology designs for frequency scalability in PCB technology for antenna arrays

#349
17967604
2023-07-18

Radio frequency (RF) polarization rotation devices and systems for interference mitigation

#350
17966945
2023-09-12

Multi-band polarization rotation for interference mitigation

#351
17902251
2023-03-21

Dual shifter devices and systems for polarization rotation to mitigate interference

#352
17825573
2022-11-22

Multi-band polarization rotation for interference mitigation

#353
17825565
2022-11-29

Dual shifter devices and systems for polarization rotation to mitigate interference

#354
17825550
2022-11-22

Radio frequency (RF) polarization rotation devices and systems for interference mitigation

#355
17716359
2023-09-05

Antenna and PCB layout topology designs for frequency scalability in PCB technology for antenna arrays

#356
16734195
2020-08-04

Dual polarization patch antenna system

#357
16397329
2020-05-12

Antenna polarization diversity

#358
16387636
2019-12-31

Contrawound helical antenna apparatus and method

#359
16387635
2020-03-24

Contrawound helical antenna apparatus and method

#360
16263639
2020-09-01

Broadband single pol TX, dual pol RX, circular polarization waveguide network

#361
16147252
2020-06-02

Circularly symmetric tightly coupled dipole array with non-coincident phase center

#362
16059931
2020-06-02

Multibeam antenna that spans the 360 degrees space in azimuth

#363
15928987
2018-12-04

Wireless communication system

#364
15900564
2019-02-05

Large area metamaterial antenna optimization

#365
15606130
2018-04-10

Waveguide device with switchable polarization configurations

#366
15445866
2017-08-22

Integrated single-piece antenna feed

#367
15222192
2019-05-07

Dual-polarized, planar slot-aperture antenna element

#368
14724298
2016-10-04

Multi-band antenna structure

#369
14504485
2016-05-31

Dual polarized probe coupled radiating element

#370
14108966
2016-11-15

Apparatus for measuring circular depolarization ratios in a weather radar

#371
14108704
2016-11-01

Process for measuring circular depolarization ratios in a weather radar

#372
12957657
2016-06-28

Fragmented aperture for the Ka/K/Ku frequency bands