Surface mounted component UHF oscillator

Details Surface mounted component UHF oscillator Surface mounted component UHF oscillator

1985-12-06

1987-06-30

Grimm, Siegfried H.

Oscillators

Solid state active element oscillator

Transistors

331 68, 331117D, 331177V, 29739, 361400, H03B 512, H05K 1304

Patent

active

046773967

ABSTRACT:
A UHF oscillator circuit includes a plurality of first leadless, or "chip", surface mounted components machine positioned on a first side of a printed circuit (PC) board and a plurality of second lead-bearing components mounted on a second side of the PC board and coupled in circuit through the PC board to the chip components in an arrangement which substantially reduces circuit fabrication costs. Comprised of a majority of automatically positioned surface mounted chip components and making use of a minimum number of lead mounted discrete components, the low Q values of the surface mounted components are compensated for by an external surface mounted feedback capacitor coupled across the collector-emitter junction of a common base transistor to provide oscillator tuning over a frequency range greater than an octave.

REFERENCES:
patent: 3679990 (1972-07-01), Hiday et al.
patent: 3909726 (1975-09-01), Dobrovolny et al.
patent: 4139881 (1979-02-01), Shimizu et al.
patent: 4515304 (1985-05-01), Berger
patent: 4573105 (1986-02-01), Beldavs
patent: 4593255 (1986-06-01), Matsuura

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