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Class Information
Number: 455/258
Name: Telecommunications > Receiver or analog modulated signal frequency converter > Local control of receiver operation > Local oscillator frequency control > Automatic > Utilizing particular local oscillator control
Description: Subject matter including automatic frequency control means broadly included with significantly recited details of one or more particular elements within the control circuit whereby the frequency, control of the oscillator is stabilized or adjusted in response to a deviation from the desired frequency.










Sub-classes under this class:

Class Number Class Name Patents
455/263 Discriminator or detector 68
455/259 Reference oscillator or source 157
455/261 Variable reactance (e.g., reactance tube) 19
455/264 Voltage control of oscillator 172


Patents under this class:
1 2 3 4 5

Patent Number Title Of Patent Date Issued
8712360 System and transceiver clocking to minimize required number of reference sources in multi-function cellular applications including GPS Apr. 29, 2014
8693969 Temperature compensation in a telecommunications device Apr. 8, 2014
8687748 Radio frequency control for communication systems Apr. 1, 2014
8680929 Low-1/F-noise local oscillator for non-overlapping differential I/Q signals Mar. 25, 2014
8682273 RF digital spur reduction Mar. 25, 2014
8670737 Digital delta Sigma modulator and applications thereof Mar. 11, 2014
8644768 System, method, and circuit for distance measurement between two nodes of a radio network Feb. 4, 2014
8638174 Digital signal generator Jan. 28, 2014
8630593 Semiconductor device, wireless communication device and method for generating a synthesized frequency signal Jan. 14, 2014
8615202 Frequency synthesizer Dec. 24, 2013
8600332 Electronic devices having interferers aligned with receiver filters Dec. 3, 2013
8594608 Synthesizer and reception device Nov. 26, 2013
8588696 Adaptive cellular power control Nov. 19, 2013
8588712 Modulation method and apparatus Nov. 19, 2013
8588720 Signal decimation techniques Nov. 19, 2013
8565692 System and method for providing a versatile RF and analog front-end for wireless and wired networks Oct. 22, 2013
8537881 Method and apparatus for detecting offset signal of transmission leakage signal in RF transceiver Sep. 17, 2013
8532236 Quadrature signal generation in radio-frequency apparatus and associated methods Sep. 10, 2013
8532600 System and transceiver clocking to minimize required number of reference sources in multi-function cellular applications including GPS Sep. 10, 2013
8515361 Frequency correction of a programmable frequency oscillator by propagation delay compensation Aug. 20, 2013
8509721 Hysteresis nonlinear state machine with overlapping thresholds for automatic frequency control Aug. 13, 2013
8498601 Polar receiver using injection-locking technique Jul. 30, 2013
8483332 Oscillating apparatus, receiving apparatus, and oscillation control method Jul. 9, 2013
8477878 Method and apparatus for precise open loop tuning of reference frequency within a wireless device Jul. 2, 2013
8416761 Mitigating synchronization loss Apr. 9, 2013
8410963 Data converter circuit and method Apr. 2, 2013
8385865 Evolved EDGE receiver Feb. 26, 2013
8374556 Method for determining audio broadcast transmission signal coverage Feb. 12, 2013
8374568 Harmonic reject receiver architecture and mixer Feb. 12, 2013
8374569 Harmonic reject receiver architecture and mixer Feb. 12, 2013
8374570 Harmonic reject receiver architecture and mixer Feb. 12, 2013
8355688 Method and system for frequency selection using microstrip transceivers for high-speed applications Jan. 15, 2013
8301098 System and transceiver clocking to minimize required number of reference sources in multi-function cellular applications including GPS Oct. 30, 2012
8295403 Method and apparatus for precise open loop tuning of reference frequency within a wireless device Oct. 23, 2012
8280330 Crystal-less clock generation for radio frequency receivers Oct. 2, 2012
8280331 System and method for tuning FM synthesizer Oct. 2, 2012
8275336 Apparatus and method for digitally controlling capacitance Sep. 25, 2012
8270917 Current controlled biasing for current-steering based RF variable gain amplifiers Sep. 18, 2012
8199027 Systems and methods for utility meter reading Jun. 12, 2012
8185067 Modulation method and apparatus May. 22, 2012
8131242 System and method for implementing a swap function for an IQ generator Mar. 6, 2012
8090335 Method and apparatus for an adaptive step frequency calibration Jan. 3, 2012
8068563 Systems and methods for frequency offset correction in a digital radio broadcast receiver Nov. 29, 2011
8064860 Method and apparatus for adjusting reference oscillator frequency in a mobile wireless device Nov. 22, 2011
8019301 Calibration techniques for frequency synthesizers Sep. 13, 2011
8014724 System and method for signal limiting Sep. 6, 2011
8010072 Charge pump current compensation for phase-locked loop frequency synthesizer systems Aug. 30, 2011
8005450 Simplified high frequency tuner and tuning method Aug. 23, 2011
7953370 Carrier sensing method and RFID transceiver device using the same May. 31, 2011
7941115 Mixer with high output power accuracy and low local oscillator leakage May. 10, 2011

1 2 3 4 5










 
 
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