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Class Information
Number: 455/116
Name: Telecommunications > Transmitter > Carrier amplitude control (e.g., voice operated on/off)
Description: Subject matter where the amplitude of the carrier signal is controlled responsive to the modulation signal.

Patents under this class:
1 2 3 4 5

Patent Number Title Of Patent Date Issued
8639196 Control modules Jan. 28, 2014
8285323 Communication device and method for input interface auto-lock thereof Oct. 9, 2012
8265203 Method and system of differential complex and real multi-carrier demodulation Sep. 11, 2012
8194785 Architectural techniques for envelope and phase signal alignment in RF polar transmitters using power amplifier feedback Jun. 5, 2012
8150338 Method and apparatus for signal peak-to-average ratio reduction Apr. 3, 2012
8112045 Translational loop transmitter architecture employing channel power ratio measurements for modulation accuracy calibration Feb. 7, 2012
8060065 Managing outgoing voicemail messages Nov. 15, 2011
8060069 Mobile call outcome display Nov. 15, 2011
7995975 Method and apparatus for signal peak-to-average ratio reduction Aug. 9, 2011
7894792 Multicarrier and multirate CDMA system Feb. 22, 2011
7885618 Generating calibration data for a transmit diversity communication device Feb. 8, 2011
7840200 Antenna matching device and transceiver having the same Nov. 23, 2010
7813760 Method of controlling communication mechanism utilized to arbitrate transmissions of wireless signals and communication apparatus utilizing the same Oct. 12, 2010
7792493 Transmitter and a method of calibrating power in signals output from a transmitter Sep. 7, 2010
7747274 Method and system for securely communicating information using multiple RF carriers Jun. 29, 2010
7469130 Polar modulator and method for determining an amplitude offset in a polar modulator Dec. 23, 2008
7460500 Multicarrier transmission method and apparatus Dec. 2, 2008
7450917 Power saving transmitter of mobile communication terminal Nov. 11, 2008
7395034 Clipping circuit and radio transmitter using the same Jul. 1, 2008
7369819 Digital amplitude modulation transmitter with pulse width modulating RF drive May. 6, 2008
7353006 Closed loop power control of non-constant envelope waveforms using sample/hold Apr. 1, 2008
7340224 Devices for reducing the dynamic range of signals in transmitters of communication systems Mar. 4, 2008
7277720 Apparatus, and associated method, for facilitating formation of an apparent push-to-talk communication connection Oct. 2, 2007
7239632 Method and apparatus for converging local area and wide area wireless data networks Jul. 3, 2007
7212790 Communication apparatus in radio network, transmission control method, threshold value control method, and radio network system May. 1, 2007
7190965 Apparatus and method for stabilization of the transmission power of radios Mar. 13, 2007
7110739 Multi-transmitter communication system employing anti-phase pilot signals Sep. 19, 2006
7088967 Data-compensating power measurement Aug. 8, 2006
7072626 Polar modulation transmitter Jul. 4, 2006
7058371 Mechanism for modulating wireless communication signals Jun. 6, 2006
7013115 Method for the generation of modulation by frequency division followed by frequency multiplication, and radiofrequency apparatus Mar. 14, 2006
7010276 Communications signal amplifiers having independent power control and amplitude modulation Mar. 7, 2006
6982965 Multicarrier transmission method and apparatus Jan. 3, 2006
6980822 Method and device for control of the transmission power of a cellular mobile telephone Dec. 27, 2005
6954620 RF power control system including watchdog circuit Oct. 11, 2005
6917823 Cellular telephone Jul. 12, 2005
6882832 Frequency verification of an amplitude modulated signal Apr. 19, 2005
6882831 Translational loop transmitter architecture employing channel power ratio measurements for modulation accuracy calibration Apr. 19, 2005
6853838 Biasing circuit for degenerated differential pair Feb. 8, 2005
6839549 System and method of RF power amplification Jan. 4, 2005
6834182 Method and apparatus providing real-time adjacent channel power ratio (ACPR) in a mobile station Dec. 21, 2004
6816832 Transmission of comfort noise parameters during discontinuous transmission Nov. 9, 2004
6782246 Method for producing a test signal Aug. 24, 2004
6771940 Multi-channel peak power smoothing Aug. 3, 2004
6731916 Power amplifying apparatus for mobile phone May. 4, 2004
6711392 Balanced power amplifier for low power radio communications Mar. 23, 2004
6690945 Method for suppressing transients using a pulse shaping look-up table Feb. 10, 2004
6678506 Extended range power detector Jan. 13, 2004
6668162 Method and an arrangement for compensating the temperature drift of a detector and a control signal in periodic control Dec. 23, 2003
6549588 Communications system and corresponding receiver unit Apr. 15, 2003

1 2 3 4 5

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