Pulse modulator and PPM demodulation determining circuit...

Details Pulse modulator and PPM demodulation determining circuit... Pulse modulator and PPM demodulation determining circuit...

2004-12-08

2008-10-14

Phu, Phuong (Department: 2611)

Pulse or digital communications

Pulse amplitude modulation

C375S340000, C375S296000, C375S297000, C375S130000

Reexamination Certificate

active

07436916

ABSTRACT:
The present invention provides a pulse modulator and a PPM demodulation determining circuit employed in Ultra Wideband (UWB) wireless communications. The pulse modulator comprises high frequency delayers which delay an input pulse, variable gainers each of which amplifies the delayed pulse, and an adder which adds the amplified pulses. The PPM demodulation determining circuit comprises an absolute value converter which absolute value-converts a received signal, integration circuits which individually integrate the absolute value-converted signals, and a comparison/determination unit which compares the integrated signals.

REFERENCES:
patent: 5808512 (1998-09-01), Bainvoll et al.
patent: 6700441 (2004-03-01), Zhang et al.
patent: 6711216 (2004-03-01), Hannah
patent: 2005/0095980 (2005-05-01), Chang
patent: 64-65574 (1989-03-01), None
patent: 9-270733 (1997-10-01), None
“Nikkei Electronics” Nikkei Business Publications, Inc., No. 841, pp. 108-109, Feb. 17, 2003.

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