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Class Information
Number: 455/127.2
Name: Telecommunications > Transmitter > Power control, power supply, or bias voltage supply > Gain control
Description: Subject matter including detail of controlling the gain of an active element (such as power amplifier) of the transmitter.










Sub-classes under this class:

Class Number Class Name Patents
455/127.3 Plural amplifier stages 373


Patents under this class:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Patent Number Title Of Patent Date Issued
8712350 RF amplifier with digital filter for polar transmitter Apr. 29, 2014
8712339 Methods and apparatus for power amplifier calibration Apr. 29, 2014
8693961 System and method for improving power efficiency of a transmitter Apr. 8, 2014
8693975 Docking unit and vehicle power adapter with frequency modulated audio signal injection for connecting portable media player and/or communications device to vehicle FM radio and audio system fo Apr. 8, 2014
8688061 System and method for biasing a power amplifier Apr. 1, 2014
8666342 Reflection-type variable attenuators Mar. 4, 2014
8660504 Method for controlling the transmission power of a transmitter system integrated in an electronic housing of a motor vehicle, and electronic housing thus obtained Feb. 25, 2014
8659456 Electronic device and transmitter DC offset calibration method thereof Feb. 25, 2014
8655289 Distortion compensation device, transmitter, and distortion compensation method Feb. 18, 2014
8655293 PA bias optimization for modulation schemes with variable bandwidth Feb. 18, 2014
8649744 Radio-frequency transmitter, such as for broadcasting and cellular base stations Feb. 11, 2014
8649748 Method and apparatus for dynamic transmitter to multi-carrier power amplifier mapping Feb. 11, 2014
8626245 Systems and methods for distributed antenna system reverse path summation using signal-to-noise ratio optimization Jan. 7, 2014
8626092 Low variation current multiplier Jan. 7, 2014
8624654 Automatic step variable attenuator and radio communication device Jan. 7, 2014
8626094 Method and apparatus for compensating code channel power in a transmitter Jan. 7, 2014
8619847 Reconditioning equalizer filter for non-constant envelop signals Dec. 31, 2013
8620227 Device, system and method of selectively connecting between a transmit chain and an antenna Dec. 31, 2013
8620232 Post filter for spectral domain echo cancellers to handle non-linear echo components Dec. 31, 2013
8620235 Thermal management for data modules Dec. 31, 2013
8620239 Dynamic DC-offset determination for proximity sensing Dec. 31, 2013
8620242 High performance transmitter preamplification chain with calibration feedback Dec. 31, 2013
8615208 Transmitter linearized in response to signal magnitude derivative parameter and method therefor Dec. 24, 2013
8611836 Amplifier gain adjustment in response to reduced supply voltage Dec. 17, 2013
8606178 Multi-directional wireless communication for a control module Dec. 10, 2013
8606199 Control of switcher regulated power amplifier modules Dec. 10, 2013
8599962 Power control using distortion measurement Dec. 3, 2013
8600455 Power control using fast signal envelope detection Dec. 3, 2013
8594596 Amplifier Nov. 26, 2013
8594592 Transmitter, base station device, and method for aligning signal output from transmitter Nov. 26, 2013
8594591 Transmission system Nov. 26, 2013
8594588 Self evaluating transmitter Nov. 26, 2013
8594583 Apparatus and method for radio frequency reception with temperature and frequency independent gain Nov. 26, 2013
8594572 Wireless electric power transmission through wall Nov. 26, 2013
8588714 Method and apparatus for regulating a power amplifier Nov. 19, 2013
8577310 System and method for transceivers in a wireless network Nov. 5, 2013
8571497 Closed-loop power control in conjunction with adaptive power amplifier linearization Oct. 29, 2013
8571496 Semiconductor device for signal amplification Oct. 29, 2013
8571495 Distortion compensation apparatus and method Oct. 29, 2013
8565699 Setting of power amplifier control voltage Oct. 22, 2013
8559897 Information processing apparatus and radio wave intensity control method Oct. 15, 2013
8559899 Method of improving transmission gain at a network element having a plurality of antennas Oct. 15, 2013
8554160 AM transmitter and modulation method using same Oct. 8, 2013
8548399 Adaptive antenna transmission and antenna calibration Oct. 1, 2013
8538356 Transmit power amplification control for wireless device Sep. 17, 2013
8538354 Method and system for controlling signal transmission of a wireless communication device Sep. 17, 2013
8538347 Low power multi-band, multi-mode transmitter Sep. 17, 2013
8531213 CMOS-inverter-type frequency divider circuit, and mobile phone including the CMOS-inverter-type frequency divider circuit Sep. 10, 2013
8526533 Systems and methods for measuring I-Q mismatch Sep. 3, 2013
8526904 Direct conversion with variable amplitude LO signals Sep. 3, 2013

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