ClassID:

219545

H03F2200/171 - page 3 - CPC Classification

Classification description:

Indexing scheme relating to amplifiers A filter circuit coupled to the output of an amplifier

Recent Application in this class:
#601
20120280752
2012-11-08

Embedded RF PA temperature compensating bias transistor

#602
20120280747
2012-11-08

Feedback based buck timing of a direct current (DC)-DC converter

#603
20120280746
2012-11-08

DC-DC converter semiconductor die structure

#604
20120258677
2012-10-11

Power amplifier architectures

#605
20120235736
2012-09-20

Charge pump based power amplifier envelope power supply and bias power supply

#606
20120229210
2012-09-13

Overlay class F choke

#607
20120223774
2012-09-06

Look-up table based configuration of multi-mode multi-band radio frequency power amplifier circuitry

#608
20120223773
2012-09-06

Linear mode and non-linear mode quadrature PA circuitry

#609
20120207252
2012-08-16

Frequency correction of a programmable frequency oscillator by propagation delay compensation

#610
20120184233
2012-07-19

Combined RF detector and RF attenuator with concurrent outputs

#611
20120178391
2012-07-12

Adjustable circuit architecture

#612
20120171979
2012-07-05

Radio frequency receiver and radio receiver

#613
20120170690
2012-07-05

Auto configurable 2/3 wire serial interface

#614
20120169565
2012-07-05

Tunable radio front end and methods

#615
20120161877
2012-06-28

PA bias power supply efficiency optimization

#616
20120139633
2012-06-07

SEMICONDUCTOR INTEGRATED CIRCUIT AND TUNER SYSTEM INCLUDING THE SAME

#617
20120115426
2012-05-10

Power amplifier saturation detection

#618
20120098595
2012-04-26

Quadrature power amplifier architecture

#619
20120044026
2012-02-23

Multiband matching circuit

#620
20120007678
2012-01-12

Broadband transistor bias network

#621
20110298562
2011-12-08

High-frequency circuit

#622
20110250854
2011-10-13

Reconfigurable wireless transmission system

#623
20110241782
2011-10-06

Power amplifier

#624
20110223871
2011-09-15

Adder, and power combiner, quadrature modulator, quadrature demodulator, power amplifier, transmitter and wireless communicator using same

#625
20110221526
2011-09-15

Method and apparatus for a gain control circuit via a high frequency signal

#626
20110210787
2011-09-01

Switchless band separation for transceivers

#627
20110207420
2011-08-25

Narrow band RF filter circuits, devices and processes using impedance translation

#628
20110202315
2011-08-18

Device and method for offset compensation based on hysteresis tracking

#629
20110117862
2011-05-19

Multiband RF Device

#630
20100301936
2010-12-02

Differential low frequency noise suppression technique for a common mode feedback circuit

#631
20100295629
2010-11-25

Output circuit with integrated impedance matching, power combining and filtering for power amplifiers and other circuits

#632
20100291890
2010-11-18

Receiver

#633
20100277215
2010-11-04

Wideband voltage translators

#634
20100274114
2010-10-28

Signal sensing in an implanted apparatus with an internal reference

#635
20100176880
2010-07-15

Power amplifier architectures

#636
20100105448
2010-04-29

Power amplifier saturation detection

#637
20100074368
2010-03-25

Asynchronous delta-sigma modulator and a method for the delta-sigma modulation of an input signal

#638
20090295473
2009-12-03

Power amplifier architectures

#639
20090243755
2009-10-01

Noise filter and noise-filter-incorporated amplifier circuit

#640
20090239491
2009-09-24

SIGNAL DISTRIBUTION SYSTEM CASCADABLE AGC DEVICE AND METHOD

#641
20090189697
2009-07-30

Auto-tuning amplifier

#642
20090174474
2009-07-09

Power amplifier

#643
20090103652
2009-04-23

SAMPLING RECEIVER

#644
20080111627
2008-05-15

Analog circuit, electronic instrument, and operational amplifier

#645
20080026707
2008-01-31

Tuneable filter control method and base station

#646
20070288183
2007-12-13

ANALOG SIGNAL TRANSITION DETECTOR

#647
20070252753
2007-11-01

Multifunction-RF-circuit

#648
20070229123
2007-10-04

Semiconductor device for microphone applications

#649
20070141982
2007-06-21

Signal distribution system cascadable AGC device and method

#650
20070111661
2007-05-17

Integrated Crosspoint Switch with Band Translation

#651
20070087712
2007-04-19

NxM crosspoint switch with band translation

#652
20070021088
2007-01-25

Dual-band active filter

#653
20060148440
2006-07-06

Mixer circuit with bypass and mixing modes having constant even order generation and method of operation

#654
20050005296
2005-01-06

NxM crosspoint switch with band translation

#655
20050004482
2005-01-06

Amplified system for determining parameters of a patient

#656
16654877
2020-06-30

Apparatus and method for dynamically stabilizing current limiting in a portable communication device

#657
16579884
2020-12-08

Digital pre-distortion circuit and digital pre-distortion method

#658
16557521
2020-07-14

Wideband low noise amplifier with noise cancellation

#659
16357846
2020-04-14

Quantum computer hardware with reflectionless filters for thermalizing radio frequency signals

#660
16238572
2019-10-29

Switch-mode power amplifier for an RF transmitter employing digitally-controlled OOB harmonic attenuation techniques

#661
16106339
2019-07-09

V-band digital control bandpass amplifier

#662
16052586
2019-10-01

Apparatuses and methods for a chopper instrumentation amplifier

#663
16015926
2019-02-19

Fully differential adjustable gain devices and methods for use therewith

#664
15993705
2019-03-12

Wide modulation bandwidth radio frequency circuit

#665
15993063
2019-08-27

Amplifier with common mode loop and chop

#666
15946716
2019-09-10

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

#667
15943125
2020-05-19

Open-loop class-D amplifier system with analog supply ramping

#668
15891790
2019-03-26

Automatic loop gain calibration in amplification circuits

#669
15875278
2019-04-09

Synthesizer—power amplifier interface in a wireless circuit

#670
15810147
2018-12-04

Circuit with co-matching topology for transmitting and receiving RF signals

#671
15467417
2018-06-19

Ripple reduction filter for chopped amplifiers

#672
15438467
2018-02-20

Offset detection circuit

#673
15289860
2018-01-02

Power amplifier circuit and method of design

#674
15177662
2017-10-31

Switching amplifier

#675
14852921
2016-10-18

Chopper stabilized amplifier with synchronous switched capacitor noise filtering

#676
14633086
2017-10-24

Integrated amplifier system

#677
14552306
2016-04-05

Apparatus and methods for dual loop power amplifier digital pre-distortion systems

#678
14486768
2016-02-16

Class D amplifier with variable switching frequency