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구분 출원국
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등록 스위칭 전력 증폭기 구동을 위한 디지털 송신장치

스위칭 전력 증폭기 구동을 위한 디지털 송신장치
이미지 확대
발명자
이성준, 박봉혁, 정재호, 오스트로브스키, 샤잇 요한 크리
출원번호
14365885 (2011.12.16)
공개번호
20140307825 (2014.10.16)
등록번호
9025700 (2015.05.05)
출원국
미국
협약과제
초록
A digital polar modulator (DPM) for transforming a baseband signal into a modulated digital modulator output signal comprises an input unit and two low-pass delta-sigma modulators, a first one being connected downstream from the first input part and configured to provide at its output a first pulse train in dependence on an amplitude- modulating baseband signal component, and a second one being connected downstream from the second input part and configured to provide at its output a multilevel quantized signal in dependence on a phase modulating baseband signal component; a multiphase generator, which is configured to provide a set of square-wave carrier signals having a common carrier frequency and exhibiting discrete phase shifts with respect to each other; a multiplexer, which is configured to provide a multiplexer output signal that is formed by switching, in dependence on a signal received at a select input as a function of time, between selected ones of the carrier signals; and a combiner unit.
KSP 제안 키워드
Carrier frequency, Common carrier, Delta-Sigma Modulator, Digital Modulator, Discrete phase, Phase shift, Pulse train(PT), RF Power, RF power amplifier, Switch Mode, baseband signal, delta-sigma, low pass, multiphase generator, polar modulator, power amplifiers(PAs), square wave
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