Single oscillator transceiver with multiple frequency converters

Details Single oscillator transceiver with multiple frequency converters Single oscillator transceiver with multiple frequency converters

1996-02-07

1998-03-31

Eisenzopf, Reinhard J.

Telecommunications

Transmitter and receiver at same station

With frequency stabilization

455 87, 455260, H04B 150

Patent

active

057349703

ABSTRACT:
A transmitter or transceiver can satisfactorily transmit or transmit and receive signals based on an oscillation signal from a single oscillator. The transmitter or transceiver includes oscillators (51, 52) for oscillating an oscillation signal having a first frequency, a first frequency divider (54) for frequency-dividing an oscillation signal of an oscillator, a clock generating circuit (60) for generating a clock of a second frequency based on a signal frequency-divided by the first frequency divider (54), a second frequency divider (57) for frequency-dividing an oscillation signal of an oscillator, a carrier generating circuit (70) for generating a carrier of a third frequency based on a signal frequency-divided by the second frequency divider (57), a frequency synthesizer (80) for generating a local signal of a fourth frequency based on an oscillation signal of an oscillator, a modulating circuit (20) for modulating predetermined transmission data based on a carrier generated from a carrier generating circuit and a frequency converter (16) for converting a modulated signal output from the modulating circuit (20) into a signal of a desired transmission frequency by a local signal output from the frequency synthesizer (80).

REFERENCES:
patent: 5392460 (1995-02-01), Mattila et al.
patent: 5408201 (1995-04-01), Uriya
patent: 5423076 (1995-06-01), Westergren et al.
patent: 5471652 (1995-11-01), Hulkko
patent: 5519885 (1996-05-01), Vaisanen

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