Circuit for linearizing frequency modulated oscillators on micro

Details Circuit for linearizing frequency modulated oscillators on micro Circuit for linearizing frequency modulated oscillators on micro

1981-03-02

1983-03-01

Grimm, Siegfried H.

Modulators

Amplitude modulator

Nonlinear device controlled by modulating signal

331117D, 331177V, 332 18, 332 19, 332 30V, H03B 518, H03C 308, H03C 322

Patent

active

043756212

ABSTRACT:
In a microstrip frequency modulated oscillator, the linearity of the modulating circuit incorporating a varactor diode is adjusted by using a microstrip transmission line as a secondary resonator in conjuction with a variable reactor. The varactor is connected to one end of this resonator which end is also connected to the main resonator of the microstrip oscillator. The variable reactor is connected between the other end of the secondary resonator and ground.

REFERENCES:
patent: 3747032 (1973-07-01), Hall et al.
patent: 4123726 (1978-10-01), Schucht
patent: 4189690 (1980-02-01), Bock et al.
patent: 4310809 (1982-01-01), Buck et al.
Bock et al., "An RF Linear Modulation Circuit", IEEE-MTT-S International Microwave Symposium Digest, pp. 315-317, Ottawa, 1978.
Marazzi et al., "Computer-Aided Design of Highly Linear, High-Power Varactor Tuned Frequency Modulators", IEEE-MTT-S International Microwave Symposium Digest, pp. 88-90, Ottawa, 1978.

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