Broadband pulse width modulation circuit and optical...

Details Broadband pulse width modulation circuit and optical... Broadband pulse width modulation circuit and optical...

2007-03-06

2007-03-06

Singh, Dalzid (Department: 2613)

Optical communications

Transmitter

Including compensation

C398S189000

Reexamination Certificate

active

10836233

ABSTRACT:
A broadband pulse width modulation circuit is provided which can achieve high speed responsibility while assuring an advantage of a pulse width modulation (PWM) circuit having a good power efficiency in order to satisfy a demand for reduction of power consumption and a demand for high speed responsibility in the field of optical communication. The broadband PWM circuit includes a PWM circuit for modulating and smoothing a pulse width in response to an input voltage signal to supply electric current to a load, a frequency band selection and amplification circuit for selectively amplifying only a specific frequency band of the input voltage signal, and a composition circuit for combining electric current from the pulse width modulation circuit and the electric current amplified by the frequency band selection and amplification circuit.

REFERENCES:
patent: 5448629 (1995-09-01), Bosch et al.
patent: 6330279 (2001-12-01), Belser et al.
patent: HEI 5-333953 (1993-12-01), None
patent: HEI 7-326055 (1995-12-01), None

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