High-frequency power divider-combiner

Wave transmission lines and networks – Plural channel systems – Having branched circuits

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H01P 512

Patent

active

053630726

ABSTRACT:
In a power amplifying apparatus which has a high-frequency power divider and combiner and two to four parallel-operated power amplifiers, in which a change is made in the number of the parallel-operated power amplifiers so as to adjust output power, there are provided a power dividing circuit D.sub.1 having a transmission line Wd.sub.51 serving as an impedance transformer set in such a manner that the power loss is minimized by assigning an intermediate number 3 between 2 and 4 both of which indicate the number of divisions, and having four output terminals, and a power combining circuit S.sub.1 having a transmission line Ws.sub.51 serving as an impedance transformer set in such a manner that the power loss is minimized by assigning the intermediate number 3 indicative of the number of combinations, and having four input terminals.

REFERENCES:
patent: 3522550 (1970-08-01), Golombelt et al.
patent: 3953702 (1976-04-01), Bickel
patent: 4885557 (1989-12-01), Barczys
patent: 4893093 (1990-01-01), Cronauer et al.
patent: 4965530 (1990-10-01), Katz
patent: 5032798 (1991-07-01), Myer
IEEE 1990 International Radar Conference, May 7-10, 1990, Arlington, US, New York US, 1990, J. D. Hay et al., "The Exploratory Development of a High Power S-Band Solid State Radar Transmitter", pp. 135-140.

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