Amplifiers – With plural amplifier channels – Redundant amplifier circuits
Patent
1995-10-31
1997-03-11
Mullins, James B.
Amplifiers
With plural amplifier channels
Redundant amplifier circuits
330124R, 330295, H03F 368
Patent
active
056105568
ABSTRACT:
A multi-port amplifier system for multi-beam communication antennas in which redundancy is achieved without using RF switches. The multi-port amplifiers are divided into sets of stages arranged in tree fashion and the amplifier stages can be turned off without degrading port-to-port isolation. In one embodiment there are thirty-two input ports 1 through 32 and thirty-two corresponding output ports 1 through 32 wherein input port 1 is functionally connected to output port 1 and so on. An input signal to each of the input ports 1 through 32 is connected to a separate one of a first group of sixteen, four stage multi-port hybrid circuits. The outputs of the first group of multi-port hybrid circuits are connected through solid-state power amplifiers to a second group of sixteen, four stage multi-port hybrid circuits which are also labeled according to the input port numbers to which they are functionally connected.
REFERENCES:
patent: 3571739 (1971-03-01), Seidel
patent: 3740756 (1973-06-01), Sosin
patent: 3928806 (1975-12-01), Carter et al.
patent: 4010426 (1977-03-01), Rambo
patent: 4198611 (1980-04-01), Eng
patent: 4477781 (1984-10-01), Reuss, Jr.
patent: 4618831 (1986-10-01), Egami et al.
patent: 4644301 (1987-02-01), Hecht
patent: 4780685 (1988-10-01), Ferguson
patent: 4825172 (1989-04-01), Thompson
patent: 4831619 (1989-05-01), Rosen
patent: 4868520 (1989-09-01), Terakawa et al.
patent: 5033108 (1991-07-01), Lockwood
patent: 5055798 (1991-10-01), Heinzelmann
"An Adaptive Multiple Beam System Concept", S. Egami et al. IEEE Journal on Selected Areas in Communications, vol. SAC-5, No. 4, May 1987.
Mullins James B.
Space Systems Loral, Inc.
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