Pulse generator and the transmitter with a pulse generator

Details Pulse generator and the transmitter with a pulse generator Pulse generator and the transmitter with a pulse generator

2006-01-19

2010-02-16

Liu, Shuwang (Department: 2611)

Pulse or digital communications

Spread spectrum

C375S135000, C375S146000, C375S238000, C375S297000

Reexamination Certificate

active

07664161

ABSTRACT:
A pulse generator for UWB transmission, lower power consumption, and suppression of LO leakage by nonuse of the LO signal. The pulse generator includes a clock generator (CLK) for giving clock of a predetermined period; a delay circuit (DLY) equipped with a function of controlling a delay time and for delaying the clock; a square-wave pulse generation circuit (SWPG) that receives information being spread by a spread code and modulates phases of square wave pulses that have a pulse width corresponding to a differential delay for one stage of the delay circuit; and an amplitude control unit (AMPC) that outputs an impulse sequence having the pulse width of the square wave in a predetermined amplitude and combines the impulses; and outputs pulses that have a predetermined envelope form.

REFERENCES:
patent: 6952456 (2005-10-01), Aiello et al.
patent: 2004/0085108 (2004-05-01), Murata et al.
patent: 2004/0087291 (2004-05-01), Wada
patent: 2005/0100079 (2005-05-01), Sanada et al.
patent: 2003-535552 (2003-11-01), None
patent: 2004-241859 (2004-08-01), None
patent: 2004-241860 (2004-08-01), None
patent: WO 01/93441 (2001-12-01), None

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