Oscillator circuit having a differential configuration and metho

Details Oscillator circuit having a differential configuration and metho Oscillator circuit having a differential configuration and metho

1998-02-20

1999-12-14

Kinkead, Arnold

Oscillators

Solid state active element oscillator

Transistors

331177V, 331108D, 331175, 455260, 455262, H03L 700, H03B 500

Patent

active

060023031

ABSTRACT:
An oscillator circuit (100) provides improved noise immunity by utilizing a differential common base configuration. The oscillator includes a differential transistor pair (102, 104) having common bases (110) coupled through an AC ground (108) and emitters coupled through a differential common mode point (120). First and second resonant tank circuits are each referenced to the differential common mode point (120) for generating a differential output (OUT, OUTX).

REFERENCES:
patent: 3643168 (1972-02-01), Manicki
patent: 4492934 (1985-01-01), Sugimoto
patent: 5012205 (1991-04-01), Howell
patent: 5187450 (1993-02-01), Wagner et al.
patent: 5434545 (1995-07-01), Burchfield
patent: 5486796 (1996-01-01), Ishikawa et al.

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