A 24GHz CMOS digitally modulated polar power amplifier with embedded FIR filtering

Hyungseok Kim, Tino Copani, Sayfe Kiaei

Research output: Chapter in Book/Report/Conference proceedingConference contribution

5 Scopus citations

Abstract

A 24GHz digitally modulated polar power amplifier (PA) is proposed. A digital amplitude control word (ACW) is generated from a 1.5-bit first-order ΣΔ ADC, reducing the number of unary PA cells compared to Nyquist approaches. The power combiner and the digitally-controlled PA cells form an embedded finite impulse response (FIR) filter suppressing out of band quantization noise caused by the ADC. The PA is designed using a 90nm CMOS process and it achieves 15dBm maximum output power while drawing 100mA from 1.2V supply. A 27% drain efficiency (DE) is achieved while a -22dB error vector magnitude (EVM) is obtained with a 50MHz BW, 16-QAM OFDM signal. The proposed architecture can perform digital-to-RF conversion, FIR filtering, and power amplification simultaneously.

Original languageEnglish (US)
Title of host publication6th Conference on Ph.D. Research in Microelectronics and Electronics, PRIME 2010
StatePublished - Nov 11 2010
Event6th Conference on Ph.D. Research in Microelectronics and Electronics, PRIME 2010 - Berlin, Germany
Duration: Jul 18 2010Jul 21 2010

Publication series

Name6th Conference on Ph.D. Research in Microelectronics and Electronics, PRIME 2010

Other

Other6th Conference on Ph.D. Research in Microelectronics and Electronics, PRIME 2010
CountryGermany
CityBerlin
Period7/18/107/21/10

Keywords

  • CMOS
  • Polar modulation
  • Power amplifiers
  • Transformers

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

Fingerprint Dive into the research topics of 'A 24GHz CMOS digitally modulated polar power amplifier with embedded FIR filtering'. Together they form a unique fingerprint.

  • Cite this

    Kim, H., Copani, T., & Kiaei, S. (2010). A 24GHz CMOS digitally modulated polar power amplifier with embedded FIR filtering. In 6th Conference on Ph.D. Research in Microelectronics and Electronics, PRIME 2010 [5587143] (6th Conference on Ph.D. Research in Microelectronics and Electronics, PRIME 2010).