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Class Information
Number: 327/113
Name: Miscellaneous active electrical nonlinear devices, circuits, and systems > Signal converting, shaping, or generating > Frequency or repetition rate conversion or control
Description: Subject matter wherein a frequency characteristic of an input signal is modified to produce an output wave of different frequency characteristic which has a definite relationship to that of the input wave or where a frequency characteristic is held essentially constant.










Sub-classes under this class:

Class Number Class Name Patents
327/117 Frequency division 490
327/119 Frequency multiplication (e.g., harmonic generation, etc.) 269
327/114 Of output rectangular waveform 234


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

Patent Number Title Of Patent Date Issued
5742189 Frequency conversion circuit and radio communication apparatus with the same Apr. 21, 1998
5740410 Static clock generator Apr. 14, 1998
5736893 Digital method and apparatus for reducing EMI emissions in digitally-clocked systems Apr. 7, 1998
5731770 Digital data buffering device Mar. 24, 1998
5721500 Efficient CMOS amplifier with increased transconductance Feb. 24, 1998
5708383 Integrated circuit frequency controlled modulator for use in a phase lock loop Jan. 13, 1998
5697091 Distortion-free chopper-based signal mixer Dec. 9, 1997
5694089 Fast frequency switching synthesizer Dec. 2, 1997
5694066 Low-jitter, non-slip clock generator Dec. 2, 1997
5678222 Modulation and frequency conversion by time sharing Oct. 14, 1997
5663675 Multiple stage tracking filter using a self-calibrating RC oscillator circuit Sep. 2, 1997
5661424 Frequency hopping synthesizer using dual gate amplifiers Aug. 26, 1997
5656958 Frequency synthesizing device Aug. 12, 1997
5656959 Clock synthesizer dual function pin system and method therefor Aug. 12, 1997
5648736 Frequency converting circuit Jul. 15, 1997
5625307 Low cost monolithic gallium arsenide upconverter chip Apr. 29, 1997
5608349 Circuit arrangement with adjustable amplitude-frequency response Mar. 4, 1997
5602501 Mixer circuit using a dual gate field effect transistor Feb. 11, 1997
5602504 Four-quadrant three-input multiplier Feb. 11, 1997
5600272 Digital damping method and apparatus for phase-locked loops Feb. 4, 1997
5596290 Direct frequency synthesizer having moderate bandwidth Jan. 21, 1997
5594350 Signal detecting circuit for digital controller Jan. 14, 1997
5587682 Four-quadrant biCMOS analog multiplier Dec. 24, 1996
5587691 Digital trimming for frequency adjustment Dec. 24, 1996
5585750 Logic LSI Dec. 17, 1996
5585751 Frequency control circuit of FM modulator Dec. 17, 1996
5581210 Analog multiplier using an octotail cell or a quadritail cell Dec. 3, 1996
5563537 Frequency-controlled circuit Oct. 8, 1996
5559457 Double-balanced mixer circuit Sep. 24, 1996
5557228 Four-quadrant multiplier Sep. 17, 1996
5557222 Delayed detection type demodulator Sep. 17, 1996
5552733 Precise and agile timing signal generator based on a retriggered oscillator Sep. 3, 1996
5551074 Balanced reflection transformer Aug. 27, 1996
5551076 Circuit and method of series biasing a single-ended mixer Aug. 27, 1996
5548219 Digital two frequency generator for use in borehole heterodyne measurement systems Aug. 20, 1996
5532637 Linear low-noise mixer Jul. 2, 1996
5530407 Digital trimming for frequency adjustment Jun. 25, 1996
5521533 Apparatus and method for spurious signal reduction in direct-digital synthesizers May. 28, 1996
5521545 Collector-injection mixer with radio frequency signal applied to collectors of lower transistor pair May. 28, 1996
5517688 MMIC FET mixer and method May. 14, 1996
5515011 Pulsed magnetron circuit with phase locked loop May. 7, 1996
5513390 Biased FET mixer Apr. 30, 1996
5506529 Adjustable frequency synthesizer Apr. 9, 1996
5502411 Frequency synthesizer Mar. 26, 1996
5495202 High spectral purity digital waveform synthesizer Feb. 27, 1996
5495194 High frequency multiplier Feb. 27, 1996
5479125 Frequency multiplying clock signal generator Dec. 26, 1995
5463337 Delay locked loop based clock synthesizer using a dynamically adjustable number of delay elements therein Oct. 31, 1995
5461339 Apparatus for processing frequency modulated signals Oct. 24, 1995
5451911 Timing generator Sep. 19, 1995

1 2 3 4 5 6 7 8 9 10 11 12










 
 
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