Multiple YIG oscillator

Details Multiple YIG oscillator Multiple YIG oscillator

1991-06-28

1992-05-19

Grimm, Siegfried H.

Oscillators

Plural oscillators

Selectively connected to common output or oscillator...

331 96, 331117D, 331177R, H03B 518

Patent

active

051152096

ABSTRACT:
YIG oscillator apparatus comprises both an FET-based YIG oscillator circuit and a bipolar transistor-based YIG oscillator circuit inside a single magnetic structure. Both YIG spheres are disposed in the single air gap of the magnetic structure, which is defined by a pole piece which is tapered to an elongated pole surface which is only slightly larger than necessary to cover both YIG spheres.

REFERENCES:
patent: 4630002 (1986-12-01), Leiba
patent: 4817200 (1989-03-01), Tanbakuchi
patent: 4988959 (1991-01-01), Khanna et al.
Data Sheet, Microsource, Inc., Model No. MCO-0226-501, "Broadband Switched YIG Tuned Oscillators 2-26.5 GHz", May 1990.
Helszajn, "YIG Resonators and Filters", John Wiley & Sons, New York, 1985, pp. 1-16, 156-170 and 191-201.
Leung et al., "A 0.5 .mu.m Silicon Bipolar Transistor for Low Phase Noise Oscillator Applications up to 20 GHz", 1985 IEEE MTT-S Digest, pp. 383-386.
Leung et al., "Downsized Bipolar Fires 20-GHz Oscillator", Microwaves & RF, Sep. 1985, pp. 163-165, 168.

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