Reflection type phase modulator having reduced temperature sensi

Details Reflection type phase modulator having reduced temperature sensi Reflection type phase modulator having reduced temperature sensi

1975-03-10

1976-06-01

Grimm, Siegfried H.

Modulators

Amplitude modulator

Nonlinear device controlled by modulating signal

332 23R, 332 30V, H03C 320

Patent

active

039612864

ABSTRACT:
An improved reflection type phase modulator having reduced temperature sensitivity and reduced distortion includes two three-port circulators coupled to form a four-port circulator. A first port is connected to a first phase modulator and a second port is coupled by means of a quarter wavelength transmission line to a second phase modulator, the transmission line being resonant at an applied unmodulated carrier frequency. The first and second phase modulators are coupled to receive a modulation signal. A third port of the circulator is coupled to receive the applied unmodulated carrier frequency and the fourth port provides a signal at the unmodulated carrier frequency which is phase modulated in response to the modulation signal.

REFERENCES:
patent: 3500399 (1970-03-01), Norris, Jr.
patent: 3506930 (1970-04-01), Gantick
patent: 3857113 (1974-12-01), Huang

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