Antenna feed system for receiving circular polarization and tran

Details Antenna feed system for receiving circular polarization and tran Antenna feed system for receiving circular polarization and tran

1979-12-21

1981-12-29

Lieberman, Eli

Communications: radio wave antennas

Antennas

Wave guide type

343100PE, 343858, H01Q 2124

Patent

active

043085415

ABSTRACT:
An object is to provide for receiving a circularly polarized signal from an antenna feed (10) connected to orthogonally spaced antenna elements (11, 12, 13, 14) and for transmitting a linearly polarized signal through the same feed without switches, and without suffering a 3 dB polarization mismatch loss, using an arrangement of hybrid junctions. The arrangement is comprised of two dividing hybrid junctions (15, 16), each connected to a different pair of antenna elements and a summing hybrid junction (17). In one embodiment, a receiver (18) is connected to the summing hybrid junction directly. A diplexer (19a or 19b) is used to connect a transmitter (20a or 20b) to only one pair of antenna elements. In an alternative embodiment, designated left and right circularly polarized (LCP and RCP) transmitters (21, 22) are connected to the summing hybrid junction by separate diplexers (23, 24), and separate LCP and RCP sensitive receivers (25, 26) are connected to the diplexers in order to transmit linearly polarized signals using all four antenna elements while receiving circularly polarized signals as before. An orthomode junction (30) and horn antenna (32) may replace the two dividing hybrid junctions (15, 16) and antenna feed (10).

REFERENCES:
patent: 3086203 (1963-04-01), Hutchison
patent: 3742506 (1973-06-01), Wilkinson
patent: 3827051 (1974-07-01), Foldes
patent: 4060808 (1977-11-01), Foldes

Affiliated with

Also associated with

Rating

Antenna feed system for receiving circular polarization and tran does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Antenna feed system for receiving circular polarization and tran, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Antenna feed system for receiving circular polarization and tran will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1020670