Telecommunications – Transmitter – Noise or interference elimination
Reexamination Certificate
2004-11-22
2008-12-30
Trinh, Sonny (Department: 2618)
Telecommunications
Transmitter
Noise or interference elimination
C455S260000, C455S501000
Reexamination Certificate
active
07471934
ABSTRACT:
A translational-loop transmitter includes a local oscillator (LO) generator for generating first and second LO signals, a modulator for generating a modulated reference signal using the second LO signal, and an offset phase-locked-loop (PLL) for phase-locking an output signal to the reference signal, and for tuning the output signal in accordance with the first LO signal. The PLL includes an offset mixer in a feedback path of the PLL, and operates in accordance with a frequency plan that minimizes the effects of on- and off-channel spurs at the output of the offset mixer.
REFERENCES:
patent: 5818303 (1998-10-01), Oishi et al.
patent: 6208875 (2001-03-01), Damgaard et al.
patent: 6308049 (2001-10-01), Bellaouar et al.
patent: 6516184 (2003-02-01), Damgaard et al.
patent: 6526265 (2003-02-01), Damgaard et al.
patent: 6560297 (2003-05-01), Broughton
patent: 6614837 (2003-09-01), Abdelgany et al.
patent: 6658065 (2003-12-01), Della Torre et al.
patent: 6766158 (2004-07-01), Molnar et al.
patent: 7027780 (2006-04-01), Jensen
patent: 7167686 (2007-01-01), See et al.
patent: 7181181 (2007-02-01), Lee et al.
patent: 7184732 (2007-02-01), Saito
patent: 7224948 (2007-05-01), Yamawaki et al.
patent: 2 026 798 (1980-02-01), None
patent: 97 30523 (1997-08-01), None
Razavi, B., “RF Transmitter Architectures and Circuits”, Proceedings of the IEEE 1999 Custom Integrated Circuits Conference, San Diego, California, May 16-19, 1999, pp. 197-204.
Strange, J. and Atkinson, S., “A Direct Conversion Transceiver for Multi-Band GSM Application”, 2000 IEEE Radio Frequency Integrated Circuits (RFIC) Symposium, pp. 25-28.
Yamawaki, T. et al., “A 2.7-V GSM RF Transceiver IC”, IEEE Journal of Solid-State Circuits, Dec. 1997, vol. 32, No. 12, pp. 2089-2096.
Carr Frank
Shi Hong
Broadcom Corporation
Sterne Kessler Goldstein & Fox PLLC
Trinh Sonny
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