Amplifiers – Modulator-demodulator-type amplifier
Reexamination Certificate
2006-07-14
2009-02-10
Nguyen, Khanh V (Department: 2817)
Amplifiers
Modulator-demodulator-type amplifier
C330S107000
Reexamination Certificate
active
07489188
ABSTRACT:
An apparatus and method amplifies a delta-sigma modulated signal and delivers the amplified signal to a power amplifier without distortion in a communication system. The apparatus receives a delta-sigma modulated signal, phase-delays the received delta-sigma modulated signal by a multiple of 360° for a bandwidth of the delta-sigma modulated basic signal, and amplifies the phase-delayed signal, facilitating implementation of a high-efficiency delta-sigma modulation-based amplification system.
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patent: 1020040082717 (2004-09-01), None
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Cha Jeong-Hyeon
Kim Bum-Man
Lee Dong-Geun
Nguyen Khanh V
Postech Foundation
Samsung Electronics Co,. Ltd
The Farrell Law Firm PC
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