Apparatus and method for bias modulator using zero current...

Details Apparatus and method for bias modulator using zero current... Apparatus and method for bias modulator using zero current...

2009-03-02

2011-11-01

Vu, Bao Q (Department: 2838)

Electricity: power supply or regulation systems

Output level responsive

Using a three or more terminal semiconductive device as the...

C323S284000, C323S285000

Reexamination Certificate

active

08049477

ABSTRACT:
An apparatus and a method for a bias modulator using a Zero Current Switching (ZCS) are provided. The bias modulator includes a Pulse Width Modulation (PWM) signal generator for converting an input envelope signal to a PWM signal; a PWM/ZCS converter for calculating the number of ZCS control signals to be provided within an on-time duration of the PWM signal and generating at least one ZCS control signal according to the number of the ZCS control signals; and a ZCS switching regulator for generating a bias current according to the ZCS control signal.

REFERENCES:
patent: 4415959 (1983-11-01), Vinciarelli
patent: 5490057 (1996-02-01), Vinciarelli et al.
patent: 7705675 (2010-04-01), McMorrow
patent: 2008/0164914 (2008-07-01), Bayadroun

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