High-Efficiency HBT MMIC Linear Power Amplifier for L-Band Personal Communications Systems

Toshihiko Yoshimasu, Noriyuki Tanba, Shinji Hara

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

A heterojunction bipolar transistor (HBT) MMIC linear power amplifier is demonstrated for the 1.9 GHz Japanese Personal Handy Phone utilizing the π/4 DQPSK modulation technique. At an operating voltage of only 3 V, an output power of 21 dBm and a power added efficiency of 35% are obtained along with a modulation vector error of 4.5% and an adjacent channel interference of -60 dBc in +/—600 kHz offset frequency bands.

Original languageEnglish
Pages (from-to)65-67
Number of pages3
JournalIEEE Microwave and Guided Wave Letters
Volume4
Issue number3
DOIs
Publication statusPublished - 1994 Mar
Externally publishedYes

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)

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