Radio receiver

Details Radio receiver Radio receiver

1991-09-09

1994-11-29

Eisenzopf, Reinhard J.

Telecommunications

Receiver or analog modulated signal frequency converter

Signal selection based on frequency

455258, 455318, 455343, 331 2, H04B 1702, H04B 126, H03L 700

Patent

active

053697901

ABSTRACT:
A portable receiver provides an output of a local oscillator to a mixer for converting the received signal from an antenna to an intermediate frequency so that the intermediate frequency signal is demodulated. An oscillation generating unit outputs a low frequency signal by switching a plurality of low frequency signals in accordance with a channel designation and a dynamic phase shifter shifts a frequency of the output of the local oscillator before it is input to the mixer, by rotating the phase of the output of the local oscillator using the output signal of the oscillation generator. Therefore, the consumption of the power by this receiver can be decreased.

REFERENCES:
patent: 3936753 (1976-02-01), Clark
patent: 4291414 (1981-09-01), Kimura
patent: 4326294 (1982-02-01), Okamoto et al.
patent: 4727591 (1988-02-01), Manlowe

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