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A Fully Digital Polar Modulator for Switch Mode RF Power Amplifier
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- Authors
- Philip Ostrovskyy, Christoph Scheytt, SungJun Lee, BongHyuk Park, JaeHo Jung
- Issue Date
- 2012-05
- Citation
- International Symposium on Circuits and Systems (ISCAS) 2012, pp.2385-2388
- Publisher
- IEEE
- Language
- English
- Type
- Conference Paper
- Abstract
- In this paper, a novel fully digital modulator for a switch mode power amplifier (SMPA) is presented. The modulator converts the input baseband amplitude and phase signals into a two-level pulse train for driving an RF SMPA. The simulation results demonstrated a proof of the concept. The proposed architecture is analyzed in terms of accuracy by measuring EVM. The impact of the modulator parameters on the SMPA performance is investigated and corresponding results are shown. The modulator was simulated with a 20 MHz LTE signal. © 2012 IEEE.
- KSP Keywords
- Digital Modulator, Pulse train(PT), RF power amplifier, Switch Mode Power amplifier, Two-level, fully digital, polar modulator, power amplifiers(PAs), simulation results