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Class Information
Number: 342/194
Name: Communications: directive radio wave systems and devices (e.g., radar, radio navigation) > With particular circuit > Complex signal (in phase and quadrature)
Description: Subject matter including receiver circuit means to separate returned radar signals into "in phase" and quadrature" components.










Patents under this class:
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Patent Number Title Of Patent Date Issued
6229475 Pulse doppler radar system with improved cluster target resolution capability May. 8, 2001
6229474 Radar apparatus May. 8, 2001
6211815 Coherent radar detection using non-coherent architecture Apr. 3, 2001
6204803 Radar apparatus Mar. 20, 2001
6198427 Doppler complex FFT police radar with direction sensing capability Mar. 6, 2001
6195035 Cylindrical monopulse Feb. 27, 2001
6166678 Fourier-transform-based adaptive radio interference mitigation Dec. 26, 2000
6157891 Positioning and ground proximity warning method and system thereof for vehicle Dec. 5, 2000
6150976 Synthesis of overlapping chirp waveforms Nov. 21, 2000
6147560 Method and device relating to supervision and control of an oscillator signal Nov. 14, 2000
6137433 Scatterometer with adaptable spatial resolution Oct. 24, 2000
6130638 Method and device for determining an azimuth angle and/or an elevation angle in a multibeam radar system Oct. 10, 2000
6121917 FM-CW radar Sep. 19, 2000
6118402 Process for side lobe suppression and amplitude or phase monopulse radar device Sep. 12, 2000
6111536 System and method for distance measurement by inphase and quadrature signals in a radio system Aug. 29, 2000
6107962 Method for measuring the ellipse axes, wave direction, and wave propagation mode of an elliptically, circularly, or linearly polarized wave Aug. 22, 2000
6087972 Microwave sensor for object motion detection Jul. 11, 2000
6075480 Down range returns simulator Jun. 13, 2000
6072419 Method for the processing of the reception signal of a deramp type synthetic aperture radar Jun. 6, 2000
6049302 Pulsed doppler radar system with small intermediate frequency filters Apr. 11, 2000
6037892 Method for automatic focusing of radar or sonar imaging systems using high-order measurements Mar. 14, 2000
6020843 Technique for implementing very large pulse compression biphase codes Feb. 1, 2000
5982319 UHF synthetic aperture radar Nov. 9, 1999
5969667 Radar system Oct. 19, 1999
5952955 Compensation for radar path length variation and phase error Sep. 14, 1999
5923280 Vehicle collision radar with randomized FSK wave form Jul. 13, 1999
5923279 Method of correcting an object-dependent spectral shift in radar interferograms Jul. 13, 1999
5910785 Method for the processing of the reception signal of a synthetic aperture radar with frequency ramps Jun. 8, 1999
5872538 Frequency domain correction of I/Q imbalance Feb. 16, 1999
5867119 Precision height measuring device Feb. 2, 1999
5861834 Virtual noise radar waveform for reduced radar detectability Jan. 19, 1999
5841522 Phase detector Nov. 24, 1998
5831570 Radar resolution using monopulse beam sharpening Nov. 3, 1998
5825323 Radar sensor Oct. 20, 1998
5805107 Cost-effective method for determining a pulse response of a high-resolution, band-limited radar channel Sep. 8, 1998
5805099 Synthetic aperture radar and target image production method Sep. 8, 1998
5784022 Process and amplitude or phase monopulse radar device for locating flying objects Jul. 21, 1998
5760734 Radar clutter removal by matrix processing Jun. 2, 1998
5757312 Method and apparatus for hard-wired adaptive cancellation May. 26, 1998
5731783 Method and apparatus for estimating radar signal polarisation Mar. 24, 1998
5726657 Phase coherent radar system using fast frequency agile waveform synthesis Mar. 10, 1998
5726656 Atmospheric correction method for interferometric synthetic array radar systems operating at long range Mar. 10, 1998
5719579 Virtual noise radar waveform for reduced radar detectability Feb. 17, 1998
5708442 Correlation radiometer imaging system Jan. 13, 1998
5703593 Adaptive DPCA subsystem Dec. 30, 1997
5703596 Demodulating integrator/demultiplexer Dec. 30, 1997
5694131 Method and apparatus for detecting multipath interference in a radar receiver Dec. 2, 1997
5661485 Homodyne receiver apparatus and method Aug. 26, 1997
5646627 Method and apparatus for controlling a biphase modulation to improve autocorrelation in pseudorandom noise coded systems Jul. 8, 1997
5646626 Method and apparatus for digital correlation in pseudorandom noise coded systems Jul. 8, 1997

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