A 38-GHz-Band Power Amplifier with Analog Pre-distortion for 1600-MHz Transmission Bandwidth 64-QAM OFDM Modulated Signal

Yu Chun Chen, Tsung Ching Tsai, Jeng-Han Tsai, Tian Wei Huang

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

Abstract

A 38-GHz-band transformer based high linear power amplifier with analog pre-distortion for wideband modulated signal in 65-nm GP CMOS process is presented in this paper. The output power is based on the two-way transformer current combining structure. The driver amplifier which is biased in deep class-AB acts as an AM-AM pre-distorter to produce better OP1dB and improve the third order intermodulation distortion (IMD3). Also a PMOS capacitor is used to compensate the AM-PM distortion of the input capacitor at the driver stage. In the continuous-wave measurement, this power amplifier achieves 14.4-dB small-signal power gain, 20.7-dBm PSAT, 35% PAEMAX, 20.2-dBm OP1dB, and 32.8% PAE1dB at 39 GHz. In the modulated signal measurement, this power amplifier achieves 13.2-dBm output power, 7.1% PAE, and EVM < -25 dBc at 1600-MHz channel bandwidth of 64-QAM OFDM with 38-GHz carrier frequency. The highest transmission data rate of the proposed power amplifier reaches up to 6.98 Gb/s.

Original languageEnglish
Title of host publication2019 IEEE MTT-S International Microwave Symposium, IMS 2019
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages312-315
Number of pages4
ISBN (Electronic)9781728113098
Publication statusPublished - 2019 Jun 1
Event2019 IEEE MTT-S International Microwave Symposium, IMS 2019 - Boston, United States
Duration: 2019 Jun 22019 Jun 7

Publication series

NameIEEE MTT-S International Microwave Symposium Digest
Volume2019-June
ISSN (Print)0149-645X

Conference

Conference2019 IEEE MTT-S International Microwave Symposium, IMS 2019
CountryUnited States
CityBoston
Period19/6/219/6/7

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Keywords

  • 5G mobile communication
  • CMOS integrated circuits
  • millimeter wave integrated circuits
  • power amplifiers
  • predistortion
  • quadrature amplitude modulation

ASJC Scopus subject areas

  • Radiation
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

Cite this

Chen, Y. C., Tsai, T. C., Tsai, J-H., & Huang, T. W. (2019). A 38-GHz-Band Power Amplifier with Analog Pre-distortion for 1600-MHz Transmission Bandwidth 64-QAM OFDM Modulated Signal. In 2019 IEEE MTT-S International Microwave Symposium, IMS 2019 (pp. 312-315). [8701080] (IEEE MTT-S International Microwave Symposium Digest; Vol. 2019-June). Institute of Electrical and Electronics Engineers Inc..