Frequency synthesizer for V/UHF wideband receiver

Details Frequency synthesizer for V/UHF wideband receiver Frequency synthesizer for V/UHF wideband receiver

1995-12-14

1998-05-12

Faile, Andrew

Telecommunications

Receiver or analog modulated signal frequency converter

Signal selection based on frequency

4551901, 455264, 455315, H04B 118

Patent

active

057521751

ABSTRACT:
The device includes a first frequency synthesizer loop with fractional division to a apply a first wide frequency band transposition signal to an input of the first mixing stage of the receiver, a second phase-lock frequency synthesizer loop to apply a second narrow frequency band transposition signal to an input of the second mixer stage of the receiver and a common frequency source coupled to the first loop and to the second loop for the application, to their reference inputs, of a frequency reference signal. Application to wideband (20 MHz to GHz) V/UHF receivers.

REFERENCES:
patent: 4492936 (1985-01-01), Albarello et al.
patent: 4792914 (1988-12-01), Dartois et al.
patent: 4896338 (1990-01-01), Rouillet et al.
patent: 5122762 (1992-06-01), Molina et al.
patent: 5179729 (1993-01-01), Mishima et al.

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