Transmitter system and method for a wireless communication...

Details Transmitter system and method for a wireless communication... Transmitter system and method for a wireless communication...

2006-08-29

2006-08-29

Tran, Khanh (Department: 2611)

Pulse or digital communications

Transmitters

Reexamination Certificate

active

07099402

ABSTRACT:
A transmitter108converts a complex baseband signal140having I and Q quadrature signal components141and142for transmission by an antenna114.An intermediate frequency based complex-to-real up-converter130uses subsampling to convert the complex baseband signal140into a real digital signal144having digital signal representations174.An intermediate frequency based bandpass filtering digital-to-analog converter132uses Delta-Sigma, bandpass techniques to convert the real digital signal144into a first analog signal146having analog signal representations182.A post-conversion bandpass filter134isolates and boosts the signal-to-noise ratio of a selected analog signal representation186to output a second analog signal148having a post-filtered selected analog signal representation192.A tracking bandpass filter136further bandpasses and up-converts the second analog signal148to output a transmittable signal150having a tracking-filtered selected analog signal representation196.

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patent: 6307435 (2001-10-01), Nguyen et al.
patent: 6584068 (2003-06-01), Alard
patent: 6950478 (2005-09-01), Rothenberg
patent: 0007301 (2000-02-01), None
patent: 0120774 (2001-03-01), None

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