Pulse width modulation amplifier

Details Pulse width modulation amplifier Pulse width modulation amplifier

2005-12-23

2010-02-02

Wang, Ted M (Department: 2611)

Pulse or digital communications

Pulse width modulation

C332S109000, C332S112000

Reexamination Certificate

active

07656946

ABSTRACT:
The invention provides a pulse width modulation amplifier that includes a correction circuit, an envelope detector, a level detector, a PWM carrier generator, an interpolation arithmetic circuit, and a PWM circuit. The envelope detector detects an envelope of digital data to be input. The correction circuit performs distortion correction, frequency characteristic correction, and ΔΣ correction, for the input digital data. The level detector detects levels of the digital data supplied by the envelope detector. The PWM carrier generator gates a carrier signal having a frequency corresponding to the output of the level detector. The interpolation arithmetic circuit generates interpolation data synchronous with the carrier signal from the digital data. The PWM circuit converts the interpolation data into a pulse width modulation signal based on the carrier signal.

REFERENCES:
patent: 5119045 (1992-06-01), Sato
patent: 5789975 (1998-08-01), Yoshida et al.
patent: 59-183510 (1984-10-01), None
patent: HEI 3-36099 (1991-07-01), None

Affiliated with

Also associated with

Rating

Pulse width modulation amplifier does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Pulse width modulation amplifier, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Pulse width modulation amplifier will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4176126