Wide band voltage controlled R-C oscillator for use with MMIC te

Details Wide band voltage controlled R-C oscillator for use with MMIC te Wide band voltage controlled R-C oscillator for use with MMIC te

1988-10-03

1989-10-10

Grimm, Siegfried H.

Oscillators

Solid state active element oscillator

Transistors

331135, 331177R, H03B 524

Patent

active

048734977

ABSTRACT:
A wide band tunable microwave oscillator for monolithic microwave integrated circuits. The oscillator does not use varactors or inductors for oscillation, but uses a voltage variable resistor coupled to a first MESFET supplying a capacitance, and to an amplifying element to create an RC oscillator. The voltage variable resistor is a second MESFET coupled to a variable voltage source. The oscillator takes advantage of the gate capacitance of the first MESFET, as well as the gain available from using an active element within the feedback loop.

REFERENCES:
patent: 3130377 (1964-04-01), Brown et al.
patent: 3345582 (1967-10-01), Maupin
Hara et al., "Broad Band Monolithic Microwave Active Inductor and Application to a Miniaturized Wide Band Amplifier", IEEE 1988 Microwave and Millimeter-Wave Monolithic Circuits Symposium, pp. 117-120, Jun. 1988.

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