Title:
FM DETECTION CIRCUIT
Document Type and Number:
WIPO Patent Application WO/2006/018936
Kind Code:
A1
Abstract:
An FM detection circuit comprising an unbalancing/balancing conversion circuit (2), a signal synthesizing circuit (3), a parallel circuit consisting of a first diode (D1) and a resonator (X1) and connected between the first balanced output terminal of the unbalancing/balancing conversion circuit (2) and one signal input terminal of the signal synthesizing circuit (3), and a parallel circuit consisting of a second diode (D2) and a capacity element (C1) and connected between the second balanced output terminal of the unbalancing/balancing conversion circuit (2) and the other signal input terminal of the signal synthesizing circuit (3), and a low pass filter (4) connected to the output terminal of the signal synthesizing circuit (3).
Inventors:
KATO AKIRA (JP)
Application Number:
PCT/JP2005/012307
Publication Date:
February 23, 2006
Filing Date:
July 04, 2005
Export Citation:
Assignee:
MURATA MANUFACTURING CO (JP)
KATO AKIRA (JP)
KATO AKIRA (JP)
International Classes:
H03D3/00; H04L27/12; (IPC1-7): H03D3/00; H04L27/12
Foreign References:
| JPH0385947A | 1991-04-11 | |||
| JPS61228708A | 1986-10-11 |
Other References:
See also references of EP 1780887A4
Attorney, Agent or Firm:
Komori, Hisao (Noninbashi Chuo-ku, Osaka-sh, Osaka 11, JP)
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