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Class Information
Number: 342/198
Name: Communications: directive radio wave systems and devices (e.g., radar, radio navigation) > With particular circuit > For receiver protection
Description: Subject matter wherein circuitry such as duplexes, T-R device, or blanking circuit is provided to prevent the transmitter signal from entering the receiver.

Patents under this class:
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Patent Number Title Of Patent Date Issued
8193973 Multilayer metamaterial isolator Jun. 5, 2012
8111188 Radar system Feb. 7, 2012
8067996 Vanadium-dioxide front-end advanced shutter technology Nov. 29, 2011
7978610 Method for asynchronous transmission of communication data between periodically blanked terminals Jul. 12, 2011
7969350 Method and system for reducing a leakage component of a received radar signal Jun. 28, 2011
7773033 Multilayer metamaterial isolator Aug. 10, 2010
7633435 Duplexer for simultaneous transmit and receive radar systems Dec. 15, 2009
7570196 Apparatus, method, computer program product and system providing asynchronous transmission of communications data using time-gated techniques Aug. 4, 2009
7498974 Radar level gauge with a galvanically isolated interface Mar. 3, 2009
7450058 Radar oscillator capable of preventing leak of oscillation output Nov. 11, 2008
7439901 Active phased array antenna for aircraft surveillance systems Oct. 21, 2008
7436353 Transmitting-receiving module of radar system Oct. 14, 2008
7427949 System and method of using absorber-walls for mutual coupling reduction between microstrip antennas or brick wall antennas Sep. 23, 2008
7388537 Radar detector with reduced emissions Jun. 17, 2008
7221311 Radar May. 22, 2007
7202812 Technique for compensation of transmit leakage in radar receiver Apr. 10, 2007
7158074 Radar system and car radar system Jan. 2, 2007
7119735 Vehicle-installed radar sensor system and vehicle-installed radar sensor Oct. 10, 2006
7075478 Radar altimeter having an automatically calibrated sensitivity range control function Jul. 11, 2006
6937184 Millimeter wave radar Aug. 30, 2005
6801157 Guided wave radar level transmitter Oct. 5, 2004
6750808 Process instrument with split intrinsic safety barrier Jun. 15, 2004
6720912 Single-antenna time division control type FM-CW radar Apr. 13, 2004
6686876 Photon primed non-radioactive gas plasma receiver protector Feb. 3, 2004
6680692 Continuous-wave radar with reflection-modulator Jan. 20, 2004
6677891 Method and device for transmitting and receiving electromagnetic waves Jan. 13, 2004
6489927 System and technique for mounting a radar system on a vehicle Dec. 3, 2002
6456224 Edge concealment system for abating radar detectability of aircraft Sep. 24, 2002
6411250 Electromagnetic sensor system Jun. 25, 2002
6384765 Repeater jamming transmitter and casing for the same May. 7, 2002
6320532 Low power radar level transmitter having reduced ground loop errors Nov. 20, 2001
6154167 Excitation method and ultra-wide bandwidth antenna for ground penetrating radar systems Nov. 28, 2000
6091360 Antenna system Jul. 18, 2000
5955984 System and method for simultaneous data link with multipurpose radar operations Sep. 21, 1999
5920279 Procedure and system for the control of a number of radar units Jul. 6, 1999
5861837 Poly-frequency CW doppler radar system with leakage cancellation and method Jan. 19, 1999
5748139 Radar transponder May. 5, 1998
5689267 Automatic VSWR sensing for aircraft-mounted pulse radar systems Nov. 18, 1997
5646625 Radar system Jul. 8, 1997
5596325 FM-CW radar transceiver Jan. 21, 1997
5596324 Electronic baffle and baffle controlled microwave devices Jan. 21, 1997
5574464 High-speed switching device for monostatic impulse radar Nov. 12, 1996
5541603 Reduced radar cross-section RF seeker front-end Jul. 30, 1996
5521603 Incipient lightning detection and device protection May. 28, 1996
5479174 Tritium primed quartz ignitor for radar receiver protector Dec. 26, 1995
5471668 Combined transmitter/receiver integrated circuit with learn mode Nov. 28, 1995
5446463 Device with high linearity for limitation of a characteristic of a signal, and use of the device in a radar reception system Aug. 29, 1995
5373297 Microwave repeater with broadband active and/or passive isolation control Dec. 13, 1994
5359331 Monostatic radar system having a one-port impedance matching device Oct. 25, 1994
5291208 Incipient lightning detection and device protection Mar. 1, 1994

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