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Class Information
Number: 343/782
Name: Communications: radio wave antennas > Antennas > Wave guide type (e.g., horn) > With external reflector or director > With means reducing re-radiation into active antenna
Description: Subject matter wherein structure or arrangement is provided to reduce reflection or the effect or reflection of the transmitted wave energy from the reflector back into the active transmitting antenna.

Patents under this class:

Patent Number Title Of Patent Date Issued
8599861 Active antenna array and method for relaying radio signals Dec. 3, 2013
8442602 Radiation redirecting external case for portable communication device and antenna embedded in battery of portable communication device May. 14, 2013
8233950 Wireless portable device with reduced RF signal interference Jul. 31, 2012
8077104 Passive anti-jamming antenna system Dec. 13, 2011
7372373 Embedded antenna and filter apparatus and methodology May. 13, 2008
7324064 Passive anti-jamming antenna system Jan. 29, 2008
7084825 Antenna and electronic device using the same Aug. 1, 2006
6992643 Passive anti-jamming antenna system Jan. 31, 2006
6819298 High-power microwave antenna system Nov. 16, 2004
6809695 Secondary reflector for SHF antennae of the Cassegrain type Oct. 26, 2004
6608607 High performance multi-band frequency selective reflector with equal beam coverage Aug. 19, 2003
6307523 Antenna apparatus and associated methods Oct. 23, 2001
5913151 Small antenna for receiving signals from constellation of satellites in close geosynchronous orbit Jun. 15, 1999
5797082 Communication receiver for receiving satellite broadcasts Aug. 18, 1998
5047787 Coupling cancellation for antenna arrays Sep. 10, 1991
4737796 Ground plane interference elimination by passive element Apr. 12, 1988
4689632 Reflector antenna system having reduced blockage effects Aug. 25, 1987
4500882 Antenna system Feb. 19, 1985
4272770 Reflector antennae apparatus for limiting aperture blockage Jun. 9, 1981
4176358 Reflector antenna with matched feed system Nov. 27, 1979
4092648 Reflex feed system for dual frequency antenna with frequency cutoff means May. 30, 1978
4034378 Antenna with echo cancelling elements Jul. 5, 1977
4031538 Antenna with echo cancelling elements Jun. 21, 1977
3990080 Antenna with echo cancelling elements Nov. 2, 1976

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