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Browse by Category: Main > Communications
Class Information
Number: 375/306
Name: Pulse or digital communications > Transmitters > Angle modulation > Frequency shift keying > One oscillator
Description: Subject matter where the modulated carrier wave is generated by altering the frequency of an oscillator in the transmitter.










Patents under this class:
1 2 3

Patent Number Title Of Patent Date Issued
8532236 Quadrature signal generation in radio-frequency apparatus and associated methods Sep. 10, 2013
8503594 Phase tracking in communications systems Aug. 6, 2013
8462837 Constellation-multiplexed transmitter and receiver Jun. 11, 2013
8457247 In-band generation of low-frequency periodic signaling Jun. 4, 2013
8412116 Wireless transceiver Apr. 2, 2013
8374283 Local oscillator with injection pulling suppression and spurious products filtering Feb. 12, 2013
8265217 Phase tracking in communications systems Sep. 11, 2012
8238456 Techniques to time vary pilot locations in wireless networks Aug. 7, 2012
8116358 Single oscillator transceiver Feb. 14, 2012
8116359 Single oscillator transceiver Feb. 14, 2012
8107552 System and method of wireless communication of uncompressed video having a fast fourier transform-based channel interleaver Jan. 31, 2012
8102940 Receive frequency band interference protection system using predistortion linearization Jan. 24, 2012
8077799 Apparatus and method to adjust a phase and frequency of a digital signal Dec. 13, 2011
8073065 Radio transmitting apparatus and multicarrier signal generating method Dec. 6, 2011
8040941 Constellation-multiplexed transmitter and receiver Oct. 18, 2011
8036286 Signal generation using phase-shift based pre-coding Oct. 11, 2011
8014480 Zero-delay serial communications circuitry for serial interconnects Sep. 6, 2011
8000401 Signal generation using phase-shift based pre-coding Aug. 16, 2011
7991069 Method for adapting filter cut-off frequencies for the transmission of discrete multitone symbols Aug. 2, 2011
7983632 Feedback control loop for amplitude modulation in a polar transmitter with a translational loop Jul. 19, 2011
7979038 PLL modulation circuit, radio transmission device, and radio communication device Jul. 12, 2011
7949072 Local oscillator with injection pulling suppression and spurious products filtering May. 24, 2011
7940830 Fast hopping frequency synthesizer May. 10, 2011
7924907 Apparatus and method for spreading/de-spreading data using pair of child orthogonal variable spreading factor codes Apr. 12, 2011
7860145 Adaptive code generator for satellite navigation receivers Dec. 28, 2010
7856071 Multi-path acquisition in the presence of very high data rate users Dec. 21, 2010
7852960 Method of computing path metrics in a high-speed Viterbi detector and related apparatus thereof Dec. 14, 2010
7848397 Frequency coherence within a location network Dec. 7, 2010
7848395 Single oscillator transceiver Dec. 7, 2010
7822140 Multi-antenna communication systems utilizing RF-based and baseband signal weighting and combining Oct. 26, 2010
7796710 Digital signal demodulator and wireless receiver using the same Sep. 14, 2010
7787564 Combined peak reduction equalizer and phase/amplitude pre-distortion Aug. 31, 2010
7697629 Method and/or apparatus for stabilizing the frequency of digitally synthesized waveforms Apr. 13, 2010
7684466 Wired spread spectrum communication device, a method for communication thereof, and a wired spread spectrum communication system Mar. 23, 2010
7657238 Method and apparatus for modulating a radio signal using digital amplitude and phase control signals Feb. 2, 2010
7606321 System and method for simplifying analog processing in a transmitter incorporating a randomization circuit Oct. 20, 2009
7602835 Multi-rate spread spectrum composite code Oct. 13, 2009
7564917 Multicarrier receiver and method for generating common phase error estimates for use in systems that employ two or more transmit antennas with independent local oscillators Jul. 21, 2009
7515931 Frequency synthesizer and synthesis method for generating a multiband local oscillator signal Apr. 7, 2009
7482883 Gain normalization of a digitally controlled oscillator in an all digital phase locked loop based transmitter Jan. 27, 2009
7333554 Communication system with frequency modulation and a single local oscillator Feb. 19, 2008
7308240 Numerical control oscillator, digital frequency converter and radio frequency unit Dec. 11, 2007
7272170 Single oscillator transceiver Sep. 18, 2007
7116706 Single oscillator transceiver frequency plan Oct. 3, 2006
6996165 Single oscillator transceiver frequency plan Feb. 7, 2006
6944250 Variable rate modulator Sep. 13, 2005
6677862 Transmitter tolerant to crystal variations Jan. 13, 2004
6674334 Oscillator having surface acoustic wave resonator and oscillation circuit Jan. 6, 2004
6674823 Variable rate modulator Jan. 6, 2004
6546060 Direct modulating FSK transmitter for MCA Apr. 8, 2003

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