Demodulators – Frequency modulation demodulator
Reexamination Certificate
2005-02-01
2005-02-01
Nguyen, Minh (Department: 2816)
Demodulators
Frequency modulation demodulator
C329S319000, C375S324000
Reexamination Certificate
active
06850113
ABSTRACT:
A demodulator includes a reference signal generator for generating a reference signal, an FM demodulation circuit for demodulating a modulated signal, and a control circuit for controlling demodulation sensitivity of the FM demodulation circuit. The control circuit controls the demodulation sensitivity of the FM demodulation circuit so that an output signal, obtained when the reference signal from the reference signal generator is inputted to the FM demodulation circuit, becomes a specified value. This structure can stabilize the demodulation sensitivity of the demodulation circuit while restraining increases in circuit scale and current consumption, and can adjust dispersions in the demodulation sensitivities of the respective ICs due to relative errors of a resistance value of a resistor and a capacity value of a condenser in an IC, the resistor and the condenser constituting the demodulator.
REFERENCES:
patent: 4692914 (1987-09-01), Yasumura et al.
patent: 5161004 (1992-11-01), Egger
patent: 5926065 (1999-07-01), Wakai et al.
patent: 6166594 (2000-12-01), Nielsen et al.
patent: 6188275 (2001-02-01), Mattisson et al.
patent: 07-115328 (1995-05-01), None
Harness & Dickey & Pierce P.L.C.
Nguyen Minh
Sharp Kabushiki Kaisha
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