Title:
FM DETECTION CIRCUIT
Document Type and Number:
Japanese Patent JP2002223125
Kind Code:
A
Abstract:
To provide an FM detection circuit where the circuit configuration is simplified to the most and that is stably in operation and simply adjusted.
The FM detection circuit is configured such that an AM modulation wave is extracted at a midpoint (point B) of a series resonance circuit that receives an FM modulation wave from a point A and consists of a coil L and a capacitor C1, a diode D1 is used to apply AM detection processing to the AM modulation wave, a capacitor C2 eliminates a high frequency component and the resulting signal is extracted as a low frequency (AF) signal from a point C.
Inventors:
OKAMOTO FUMIO
Application Number:
JP2001018099A
Publication Date:
August 09, 2002
Filing Date:
January 26, 2001
Export Citation:
Assignee:
OKAMOTO FUMIO
International Classes:
H03D3/26; (IPC1-7): H03D3/26