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Registered DIGITAL POLAR MODULATOR FOR A SWITCH MODE RF POWER AMPLIFIER
- Inventors
- Lee Sung Jun, Park Bong Hyuk, Jung Jaeho, 오스트로브스키, 샤잇 요한 크리
- Application No.
- 14365885 (2011.12.16)
- Publication No.
- 20140307825 (2014.10.16)
- Registration No.
- 9025700 (2015.05.05)
- Country
- UNITED STATES
- Project Code
- 11MI1900, Research on the Class-S base-station power amplifier technology for future mobile communications, Jung Jaeho
- Abstract
- 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 Keywords
- Carrier frequency, Common carrier, Delta-Sigma Modulator, Digital Modulator, Discrete phase, Phase shift, Pulse train(PT), RF Power, RF power amplifier, baseband signal, delta-sigma, low pass, multiphase generator, polar modulator, power amplifiers(PAs), square wave, switch-mode
- Family
| Status | Patent | Country | KIPRIS |
|---|---|---|---|
| Registered | DIGITAL POLAR MODULATOR FOR A SWITCH MODE RF POWER AMPLIFIER | GERMANY |