Receiver device

Details Receiver device Receiver device

2011-03-29

2011-03-29

Liu, Shuwang (Department: 2611)

Pulse or digital communications

Receivers

Angle modulation

C375S295000, C375S316000, C375S261000, C375S325000

Reexamination Certificate

active

07916813

ABSTRACT:
A frequency converter converts a high frequency signal transmitted in a frequency shift keying scheme into an intermediate frequency signal having a predetermined frequency, to output the intermediate frequency signal therefrom. An amplitude limiter limits an amplitude of an output signal from the frequency converter for output. An orthogonal demodulator includes: a first signal generator which generates a pair of first local oscillation signals of which frequencies are k multiple of the predetermined frequency and of which phases are orthogonal to each other, k being an odd integer equal to or greater than3. I-side and Q-side mixers each mix an output signal from the amplitude limiter and each of the pair of first local oscillation signals to output a mixed signal therefrom. The orthogonal demodulator generates a demodulation signal based on output signals from the I-side and Q-side mixers.

REFERENCES:
patent: 4425584 (1984-01-01), Hirota et al.
patent: 5530929 (1996-06-01), Lindqvist et al.
patent: 5761615 (1998-06-01), Jaffee
patent: 6005896 (1999-12-01), Maruyama
patent: 6233444 (2001-05-01), Nakanishi
patent: 6876844 (2005-04-01), Wong
patent: 2003/0190901 (2003-10-01), Miya et al.
patent: 61-099447 (1986-05-01), None
John F. Wilson, et al.; “A Single-Chip VHF and UHF Receiver for Radio Paging”; IEEE Journal of Solid-State Circuits, vol. 26, No. 12, Dec. 1991.

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