Extended bandwidth RF amplifier

Details Extended bandwidth RF amplifier Extended bandwidth RF amplifier

1990-11-23

1992-03-31

Mullins, James B.

Amplifiers

With plural amplifier channels

Redundant amplifier circuits

330 53, 330 84, 330124D, 330126, H03F 368

Patent

active

051011719

ABSTRACT:
A system for extending the frequency range of an RF amplifier by improving the VSWR, and power handling capability of the amplifier, comprising a broadband reversing transformer, a first and a second amplifier coupled by means of a first and a second through-line quadrature coupler with the first quadrature coupler being connected to the inputs of the two amplifiers and the second quadrature coupler being connected to the outputs of the two amplifiers. The broadband reversing transformer is inserted in series with one of the two amplifiers enabling a signal at frequencies out of the passband of the quadrature couplers to pass through the through-lines port of the quadrature couplers, and thereby greatly extending the frequency range over which quadrature couplers may be used while, at the same time, retaining the usual combining and VSWR advantages of the couplers within their passbands.

REFERENCES:
patent: 4283684 (1981-08-01), Satoh

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