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Class Information
Number: 455/318
Name: Telecommunications > Receiver or analog modulated signal frequency converter > Frequency modifying or conversion > With specified local oscillator structure or coupling
Description: Subject matter including significant details of either (a) at least one source of unmodulated signal for frequency conversion, or (b) circuitry connecting a source of unmodulated signal to a frequency conversion device.

Sub-classes under this class:

Class Number Class Name Patents
455/321 In a single envelope or with common active element (e.g., autodyne) 112
455/319 With particular coupling 132

Patents under this class:
1 2 3 4 5 6 7 8

Patent Number Title Of Patent Date Issued
8688067 Sampling circuit and receiver using same Apr. 1, 2014
8680929 Low-1/F-noise local oscillator for non-overlapping differential I/Q signals Mar. 25, 2014
8666352 Harmonic cancellation for frequency conversion harmonic cancellation Mar. 4, 2014
8644781 Clock generator with frequency error compensation and mobile device using the same Feb. 4, 2014
8644786 Receiver apparatus having filters implemented using frequency translation techniques Feb. 4, 2014
8638174 Digital signal generator Jan. 28, 2014
8634793 IP2 calibration measurement and signal generation Jan. 21, 2014
8630679 Wireless communication unit, baseband module, radio frequency module, wireless terminal and computer program product Jan. 14, 2014
8626105 Mixer-amplifier for an RF receive chain Jan. 7, 2014
8620252 Ultra low power, low noise switched capacitor radio frequency mixer Dec. 31, 2013
8600332 Electronic devices having interferers aligned with receiver filters Dec. 3, 2013
8594608 Synthesizer and reception device Nov. 26, 2013
8588725 Apparatus, system, and method for down converting and up-converting electromagnetic signals Nov. 19, 2013
8581112 Coupler apparatus Nov. 12, 2013
8583072 Multiphase local oscillator generator circuit for a broadband tuner device Nov. 12, 2013
8577323 High dynamic range time-varying integrated receiver for elimination of off-chip filters Nov. 5, 2013
8577322 Signal mixer having a single-ended input and a differential output Nov. 5, 2013
8526904 Direct conversion with variable amplitude LO signals Sep. 3, 2013
8521117 System and method for digital interference cancellation Aug. 27, 2013
8509721 Hysteresis nonlinear state machine with overlapping thresholds for automatic frequency control Aug. 13, 2013
8483645 Dual carrier amplifier circuits and methods Jul. 9, 2013
8478222 I/Q calibration for walking-IF architectures Jul. 2, 2013
8472902 Radio broadcast receiving apparatus and radio broadcast receiving method Jun. 25, 2013
8447259 Mode-switching low-noise amplifier and wide-band RF receiver May. 21, 2013
8442472 Technique to generate divide by two and 25% duty cycle May. 14, 2013
8433255 System and method for reducing temperature-dependent and process-dependent frequency variation of a crystal oscillator circuit Apr. 30, 2013
8412141 LR polyphase filter Apr. 2, 2013
8406707 Systems and methods for implementing a harmonic rejection mixer Mar. 26, 2013
8385865 Evolved EDGE receiver Feb. 26, 2013
8385901 System and methods for monitoring the context associated with a mobile communication device Feb. 26, 2013
8374569 Harmonic reject receiver architecture and mixer Feb. 12, 2013
8374570 Harmonic reject receiver architecture and mixer Feb. 12, 2013
8374568 Harmonic reject receiver architecture and mixer Feb. 12, 2013
8346201 Asynchronous first in first out interface, method thereof and integrated receiver Jan. 1, 2013
8340623 Self-mixing receiver and forming method thereof Dec. 25, 2012
8340619 Phase synchronization of phased array or multiple receiver/transmitter systems Dec. 25, 2012
8315586 Signal receiving device and signal receiving method using same, and signal supplying unit and signal supplying method using same Nov. 20, 2012
8306484 Direct-conversion transmitter with resistance to local oscillator pulling effects Nov. 6, 2012
8301104 System and method for digital interference cancellation Oct. 30, 2012
8300734 Frequency converting system Oct. 30, 2012
8295800 Apparatus and method for down-converting electromagnetic signals by controlled charging and discharging of a capacitor Oct. 23, 2012
8285241 Receiver apparatus having filters implemented using frequency translation techniques Oct. 9, 2012
8280331 System and method for tuning FM synthesizer Oct. 2, 2012
8280330 Crystal-less clock generation for radio frequency receivers Oct. 2, 2012
8275336 Apparatus and method for digitally controlling capacitance Sep. 25, 2012
8249533 Rapidly adjustable local oscillation module and applications thereof Aug. 21, 2012
8229386 Receiver applied to a satellite down converter and radio frequency metal-oxide-semiconductor amplifier Jul. 24, 2012
8224260 Radio frequency signal transmission/reception apparatus and radio frequency signal transmission/reception method Jul. 17, 2012
8200181 Noise reduction in a dual radio frequency receiver Jun. 12, 2012
8190116 Methods and systems for down-converting a signal using a complementary transistor structure May. 29, 2012

1 2 3 4 5 6 7 8

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