US 6,983,174 B2
Distributed active transmit and/or receive antenna
Russell Hoppenstein, Richardson, Tex. (US); Mike Thomas, Richardson, Tex. (US); and Mano D. Judd, Rockwall, Tex. (US)
Assigned to Andrew Corporation, Orland Park, Ill. (US)
Filed on Sep. 18, 2002, as Appl. No. 10/246,178.
Prior Publication US 2004/0192392 A1, Sep. 30, 2004
Int. Cl. H04B 1/38 (2006.01)
U.S. Cl. 455—562.1 25 Claims
OG exemplary drawing
 
1. An antenna system comprising:
(a) a plurality of antenna elements, the antenna elements configured to receive and transmit electromagnetic radiation;
(b) a first set of duplexers, each duplexer of the first set having a receive port, a transmit port and an antenna port, wherein the antenna ports of the first set of duplexers are coupled to respective antenna elements from the plurality of antenna elements;
(c) a second set of duplexers, each duplexer of the second set having a receive port, a transmit port and an antenna port, wherein the receive ports of the first set of duplexers are coupled to respective transmit ports of the second set of duplexers;
(d) a plurality of low noise amplifiers, each low noise amplifier having an input coupled to a transmit port of a duplexer the first set of duplexers and an output coupled to a receive port of a duplexer from the second set of duplexers; and
(e) a power divider, the power divider coupled to the antenna ports of the second set of duplexers.