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Dual-band feedforward linear power amplifier for digital cellular and IMT-2000 base-station

  • Heungjae Choi*
  • , Yongchae Jeong
  • , J. S. Kenney
  • , Chul Dong Kim
  • *Corresponding author for this work
  • Jeonbuk National University
  • Georgia Institute of Technology
  • Sewon Teletech, Inc.

Research output: Contribution to journalJournal articlepeer-review

Abstract

This article presents the design of a novel dual-band signal cancellation circuit and its application to feedforward linear power amplifier. Intermodulation distortion cancellation loop shows 20.45 dB and 25.04 dB suppression for digital cellular band and IMT-2000 band, respectively, over a correction bandwidth of 100 MHz. From the adjacent channel leakage ratio measurement, 16.5 dB and 18.6 dB improvements are achieved for each band under simultaneous operation.

Original languageEnglish
Pages (from-to)922-926
Number of pages5
JournalMicrowave and Optical Technology Letters
Volume51
Issue number4
DOIs
StatePublished - 2009.04

Keywords

  • Dual-hand
  • Feedforward
  • Power amplifier

Quacquarelli Symonds(QS) Subject Topics

  • Materials Science
  • Engineering - Electrical & Electronic
  • Engineering - Petroleum
  • Physics & Astronomy

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