FM detector circuit

Details FM detector circuit FM detector circuit

2005-09-27

2005-09-27

Vuong, Quochien B. (Department: 2685)

Telecommunications

Receiver or analog modulated signal frequency converter

Frequency or phase modulation

C329S328000, C329S336000

Reexamination Certificate

active

06950640

ABSTRACT:
An FM detector circuit includes a bridge circuit having four sections with a discriminator connected as one of the four sections. An FM intermediate frequency is applied across one pair of diagonally opposed nodes of the bridge circuit and an output is picked up across the other pair of diagonally opposed nodes of the bridge circuit. The discriminator includes a piezoelectric material that is selected to produce stable overall temperature characteristics.

REFERENCES:
patent: 4562404 (1985-12-01), Futakuchi
patent: 5053717 (1991-10-01), Schulz et al.
patent: 5109542 (1992-04-01), Ecklund
patent: 5619531 (1997-04-01), Taylor et al.
patent: 5929716 (1999-07-01), Komori et al.
patent: 5-283968 (1993-10-01), None

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