Telecommunications – Transmitter – Plural separate transmitters or channels
Reexamination Certificate
2011-07-05
2011-07-05
Phu, Sanh D (Department: 2618)
Telecommunications
Transmitter
Plural separate transmitters or channels
C455S296000, C455S226100, C455S323000, C455S302000, C455S326000, C375S329000, C375S349000
Reexamination Certificate
active
07974590
ABSTRACT:
Aspects of a method and system for simultaneous signal transmission on multiple selected frequencies may include generating from a single baseband signal, a plurality of radio frequency transmission signals each at a different radio frequency, wherein the single baseband signal comprises an in-phase signal component and/or a quadrature signal component. The single baseband signal, to generate said plurality of radio frequency transmission signals, may be modulated in a single radio frequency transmission chain, the radio frequency transmission chain comprising intermediate frequency modulation and radio frequency modulation. The plurality of radio frequency transmission signals may be a radio frequency signal and a corresponding image frequency signal, based on the intermediate frequency modulation and the radio frequency modulation. The signals resulting from the intermediate frequency modulation and the radio frequency modulation may be filtered to preserve the radio frequency signal and the corresponding image frequency signal.
REFERENCES:
patent: 6240142 (2001-05-01), Kaufman et al.
patent: 6504879 (2003-01-01), Iwamatsu
patent: 7020221 (2006-03-01), Glas et al.
patent: 7146146 (2006-12-01), Masenten et al.
patent: 2003/0189989 (2003-10-01), Kroeger
Ibrahim Brima Babatunde
Mak Siukai
Marholev Bojko
Walley John
Broadcom Corporation
McAndrews Held & Malloy Ltd.
Phu Sanh D
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