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Browse by Category: Main > Communications
Class Information
Number: 342/408
Name: Communications: directive radio wave systems and devices (e.g., radar, radio navigation) > Directive > Beacon or receiver > With transmisson of bearing or position determinative signals > Fixed course or bearing indicating > Moving beam
Description: Subject matter wherein the transmitted signal changes direction.










Patents under this class:
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Patent Number Title Of Patent Date Issued
8224240 Method and apparatus for implementing beam forming in CDMA communication system Jul. 17, 2012
7714782 Phase arrays exploiting geometry phase and methods of creating such arrays May. 11, 2010
7426386 Beam laydown for hopped satellite downlink with adaptable duty cycle Sep. 16, 2008
5635941 Method and apparatus for feeding over-modulated message signals to antennas of an antenna array Jun. 3, 1997
5570097 Retransmitted GPS interferometric system Oct. 29, 1996
5359334 X-scan aircraft location systems Oct. 25, 1994
5248983 Transmitting station for a position locating system, particularly for the microwave landing system, and methods for monitoring and controlling such a transmitting station Sep. 28, 1993
5247311 Loro antenna and pulse pattern detection system Sep. 21, 1993
5177491 Navigation receiver with beam asymmetry immunity Jan. 5, 1993
5134416 Scanning antenna having multipath resistance Jul. 28, 1992
5132692 Method and means for switchover from primary equipment to standby equipment in a microwave landing system Jul. 21, 1992
5130716 Apparatus for and method of monitoring a navigation system Jul. 14, 1992
5103233 Radar system with elevation-responsive PRF control, beam multiplex control, and pulse integration control responsive to azimuth angle Apr. 7, 1992
4968982 Aircraft landing system having simplified out-of-coverage indication (OCI) Nov. 6, 1990
RE33401 Microwave landing system Oct. 23, 1990
4912479 Microwave landing system Mar. 27, 1990
4899160 Guidance equipment for microwave landing system Feb. 6, 1990
4890110 Microwave landing system Dec. 26, 1989
4837580 Microwave landing system with fail-soft switching of dual transmitters, beam steering and sector antennas Jun. 6, 1989
4823127 Automatic, real-time fault monitor verifying network in a microwave landing system Apr. 18, 1989
4819000 Scanning antenna having amplitude and phase distribution diversity Apr. 4, 1989
4794543 Multi level split gate signal processor determining the centroid of a signal Dec. 27, 1988
4789864 Low elevation guidance system Dec. 6, 1988
4764772 Scanning-beam microwave landing system Aug. 16, 1988
4757316 Method and device for monitoring a station of a landing aid system of the MLS type Jul. 12, 1988
4723126 Microwave landing system for use on a back course approach Feb. 2, 1988
4670756 Phase shifter control Jun. 2, 1987
4635064 Microwave landing system Jan. 6, 1987
4568942 Microwave landing system with separate elevation bearing stations Feb. 4, 1986
4489326 Time reference scanning beam microwave landing system Dec. 18, 1984
4485384 Microwave system Nov. 27, 1984
4358768 Radio direction finder Nov. 9, 1982
4333081 Monitoring system for scanning-beam microwave landing apparatus Jun. 1, 1982
4306239 Microwave landing systems Dec. 15, 1981
4306238 Microwave landing systems Dec. 15, 1981
4193075 Low angle elevation guidance system Mar. 11, 1980
4186398 Modulation of scanning radio beams Jan. 29, 1980
4178581 Integrated antenna aperture Dec. 11, 1979
4134116 Monitoring commutated scanning radio beams Jan. 9, 1979
4131890 Spectral analysis Dec. 26, 1978
4129870 Apparatus for synthesis of scanning beam Dec. 12, 1978
4119969 Scanning beam navigational beacon with transmitted coherence reference signal and thinned two-dimensional phased array Oct. 10, 1978
4109249 Scanning beam receiver Aug. 22, 1978
4063242 Doppler navigation system with reference signal source diversity Dec. 13, 1977
4050074 Blended step scan beam signal from fixed beam components Sep. 20, 1977
4041492 Radio navigation with separate correlated scans to avoid reflection interference Aug. 9, 1977
4017862 Aircraft guidance system Apr. 12, 1977
3999182 Phased array antenna with coarse/fine electronic scanning for ultra-low beam granularity Dec. 21, 1976
3971026 Multiple beam glide slope radio navigation method with two classes of beams Jul. 20, 1976
3964053 Aircraft guiding system Jun. 15, 1976

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