Receiver circuit

Details Receiver circuit Receiver circuit

1996-10-11

1999-09-14

Vu, Huy D.

Telecommunications

Receiver or analog modulated signal frequency converter

Frequency modifying or conversion

375319, H04B 126

Patent

active

059536438

ABSTRACT:
A receiver circuit, particularly an integrated, zero IF receiver circuit in which a direct conversion IF stage is separated from an antenna by a further fequency conversion stage which is AC coupled to the direct conversion IF stage. A single crystal oscillator generates a frequency which is multiplied prior to being applied as a local oscillator signal to the further frequency conversion stage and is used to produce another frequency, which is divided to block harmonics, prior to being applied as quadrature related local oscillator signals to the direct conversion IF stage. The direct coversion IF stage includes several dc nulling for compensating for dc offsets.

REFERENCES:
patent: 5003621 (1991-03-01), Gailus
patent: 5093930 (1992-03-01), Kasperovitz
patent: 5422889 (1995-06-01), Sevenhans et al.
patent: 5552749 (1996-09-01), Nowatshi et al.
patent: 5557642 (1996-09-01), Williams
patent: 5678227 (1997-10-01), Connell et al.
patent: 5691974 (1997-11-01), Zehavi et al.
patent: 5715281 (1998-02-01), Bly et al.
patent: 5736840 (1998-04-01), Otaka et al.
patent: 5761615 (1998-06-01), Jaffee
Philips Journal of Research, vol. 41, No. 3, 1986, pp. 219-231, "Some Features of Signal Demodulation Resulting from the Practical Implementation of a Direct Conversion Radio Receiver", by R.A. Brown, R.J. Dewey and C.J. Collier.
Wayne Tomasi, Electronic Communications Systems Fundamental, Prentice-Hall, p. 145, 1994.

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