Power amplifying apparatus

Details Power amplifying apparatus Power amplifying apparatus

1985-09-13

1986-10-21

Mullins, James B.

Amplifiers

With plural amplifier channels

Redundant amplifier circuits

330 53, 330124D, 330295, 333117, 455133, 455140, H03F 368

Patent

active

046188312

ABSTRACT:
A first multi-port hybrid coupler is formed by n2.sup.n-1 (where n is an integer equal to or greater than 2) hybrid couplers alone, which are divided into n stages, each including 2.sup.n-1 hybrid couplers. A signal input to any one of N (=2.sup.n) input terminals of the first stage is distributed equally to N output terminals of the nth stage. The N output terminals of the nth stage of the first multi-port hybrid coupler are connected to N amplifiers at the input side thereof, respectively, and the N amplifiers are connected at the output side to a second multi-port hybrid coupler. The second multi-port hybrid coupler is identical in construction with the first multi-port hybrid coupler, but its input terminals and output terminals are reverse from those of the latter and the input terminals of the second multi-port hybrid coupler are connected to the N amplifiers in an order reverse from the order of arrangement of the output terminals of the first multi-port hybrid coupler.

REFERENCES:
patent: 3571739 (1971-03-01), Seidel
patent: 3731217 (1973-05-01), Gerst et al.
patent: 4477781 (1984-10-01), Reuss, Jr.
"The Butler Matrix Transponder", by W. A. Sandrin, COMSAT Tech. Review, vol. 4, No. 2, pp. 319-345, Fall 1974.

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