ClassID:

219606

H03F2200/336 - page 3 - CPC Classification

Classification description:

Indexing scheme relating to amplifiers A I/Q, i.e. phase quadrature, modulator or demodulator being used in an amplifying circuit

Recent Application in this class:
#601
20070202819
2007-08-30

RF power transmission, modulation, and amplification, including cartesian 4-branch embodiments

#602
20070188225
2007-08-16

Distortion compensating apparatus and method

#603
20070184789
2007-08-09

Cartesian loop transmitter and method of adjusting an output level of such transmitter

#604
20070183532
2007-08-09

Method and system for transmitter envelope delay calibration

#605
20070182484
2007-08-09

Adaptive predistortion method and arrangement

#606
20070178859
2007-08-02

Systems and methods of RF power transmission, modulation, and amplification, including cartesian 4-branch embodiments

#607
20070173213
2007-07-26

Cartesian loop transmitter and method of adjusting an output level of such transmitter

#608
20070165745
2007-07-19

Adaptation of IQ-error compensation

#609
20070160164
2007-07-12

Digital transmitters for wireless communication

#610
20070149151
2007-06-28

LINC power transmitter

#611
20070133714
2007-06-14

Systems and methods of RF power transmission, modulation, and amplification, including transfer function embodiments

#612
20070116145
2007-05-24

Systems and methods of RF power transmission, modulation, and amplification, including transfer function embodiments

#613
20070115053
2007-05-24

Method and arrangement for optimizing efficiency of a power amplifier

#614
20070098109
2007-05-03

Method and apparatus for discrete power synthesis of multicarrier signals with constant envelope power amplifiers

#615
20070087709
2007-04-19

Multiple input single output (MISO) amplifier with circuit branch output tracking

#616
20070087708
2007-04-19

RF power transmission, modulation, and amplification, including harmonic control embodiments

#617
20070082640
2007-04-12

Signal generation apparatus, frequency converting apparatus, and receiver

#618
20070082628
2007-04-12

Systems and methods of RF power transmission, modulation, and amplification, including multiple input single output (MISO) amplifier embodiments comprising harmonic control circuitry

#619
20070066253
2007-03-22

RF power transmission, modulation, and amplification, including power control of multiple input single output (MISO) amplifiers

#620
20070066252
2007-03-22

Systems and methods of RF power transmission, modulation, and amplification, including output stage protection circuitry

#621
20070066251
2007-03-22

Systems and methods of RF power transmission, modulation, and amplification, including Cartesian-Polar-Cartesian-Polar (CPCP) embodiments

#622
20070060076
2007-03-15

Multiple input single output (MISO) amplifier having multiple transistors whose output voltages substantially equal the amplifier output voltage

#623
20070049205
2007-03-01

Adaptive radio transceiver with an antenna matching circuit

#624
20070041470
2007-02-22

Transmitter control

#625
20070032210
2007-02-08

Center frequency control of an integrated phase rotator band-pass filter using VCO coarse trim bits

#626
20070026822
2007-02-01

Systems and methods of RF power transmission, modulation, and amplification, including waveform distortion compensation embodiments

#627
20070026821
2007-02-01

RF power transmission, modulation, and amplification using multiple input single output (MISO) amplifiers to process phase angle and magnitude information

#628
20070021078
2007-01-25

Transmitting arrangement, transreceiver with a transmitting arrangement and method for signal processing

#629
20070015472
2007-01-18

Multimode transmitter, module, communication device and chip set

#630
20070010218
2007-01-11

Apparatus and method for high efficiency RF power amplification using drain bias adaptation

#631
20060293000
2006-12-28

RF power transmission, modulation, and amplification, including direct cartesian 2-branch embodiments

#632
20060292999
2006-12-28

Systems and methods of RF power transmission, modulation, and amplification, including a Cartesian-Polar-Cartesian-Polar (CPCP) embodiment

#633
20060291589
2006-12-28

Method and apparatus for a fully digital quadrature modulator

#634
20060220590
2006-10-05

Operational amplifier, and amplitude modulator and transmitter using the same

#635
20060215783
2006-09-28

Distortion compensation apparatus

#636
20060114075
2006-06-01

Transmitter and a method of calibrating power in signals output from a transmitter

#637
20060105735
2006-05-18

Method and system for compensation of DC offset in an RF receiver

#638
20060104384
2006-05-18

Systems and methods for vector power amplification

#639
20060099919
2006-05-11

Systems and methods for vector power amplification

#640
20060050810
2006-03-09

Hybrid transmitter architecture having high efficiency and large dynamic range

#641
20060046665
2006-03-02

System and method for digital memorized predistortion for wireless communication

#642
20050233713
2005-10-20

Method and apparatus for compensating for phase variations caused by activation of an amplifier

#643
20050210354
2005-09-22

Transmitting method and transmitting apparatus

#644
20050202789
2005-09-15

Transmitter and transceiver

#645
20050201487
2005-09-15

Pre-distortion method, measurement arrangement, pre-distorter structure, transmitter, receiver and connecting device

#646
20050186925
2005-08-25

Adaptive radio transceiver with floating MOSFET capacitors

#647
20050180527
2005-08-18

Digital predistorter using power series model

#648
20050174175
2005-08-11

Amplifying circuit with adjustable amplification and transmitter system comprising such an amplifying circuit

#649
20050163252
2005-07-28

Transmitter predistortion circuit and method therefor

#650
20050163208
2005-07-28

Equalized signal path with predictive subtraction signal and method therefor

#651
20050157814
2005-07-21

Wideband enhanced digital injection predistortion system and method

#652
20050153664
2005-07-14

Adaptive radio transceiver with an antenna matching circuit

#653
20050073360
2005-04-07

Architecture and implementation methods of digital predistortion circuitry

#654
20050017801
2005-01-27

Elimination of peak clipping and improved efficiency for RF power amplifiers with a predistorter

#655
17236522
2022-06-21

Accurate sign change for radio frequency transmitters

#656
16291036
2020-03-17

Receiver automatic gain control systems and methods for asymmetrical or unbalanced constellations

#657
16250165
2020-04-21

System for voltage standing wave ratio (VSWR) measurement

#658
16234484
2019-11-12

Digital-controlled vector signal modulator

#659
15966935
2019-08-06

Wideband distributed power amplifier utilizing metamaterial transmission line conception with impedance transformation

#660
15946716
2019-09-10

Broadband image-reject receiver for multi-band millimeter-wave 5G communication

#661
15863810
2019-01-29

Phase-shifting power divider/combiner assemblies and systems

#662
15790712
2018-10-16

Multiphase pulse modulated transmitter

#663
15248825
2017-12-05

Series-type Doherty amplifier

#664
14843174
2016-09-06

Mixer impairment correction based on volterra series

#665
14663641
2017-01-03

ESA phase shifter topology