Envelope tracking CMOS power amplifier with high-speed CMOS envelope amplifier for mobile handsets

Eiji Yoshida, Yasufumi Sakai, Kazuaki Oishi, Hiroshi Yamazaki, Toshihiko Mori, Shinji Yamaura, Kazuo Suto, Tetsu Tanaka

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

A high-efficiency CMOS power amplifier (PA) based on envelope tracking (ET) has been reported for a wideband code division multiple access (WCDMA) and long term evolution (LTE) application. By adopting a high-speed CMOS envelope amplifier with current direction sensing, a 5% improvement in total power-added efficiency (PAE) and a 11 dB decrease in adjacent channel leakage ratio (ACLR) are achieved with a W-CDMA signal. Moreover, the proposed PA achieves a PAE of 25.4% for a 10MHz LTE signal at an output power (Pout) of 25.6dBm and a gain of 24 dB.

Original languageEnglish
Article number04EE19
JournalJapanese journal of applied physics
Volume53
Issue number4 SPEC. ISSUE
DOIs
Publication statusPublished - 2014 Apr

ASJC Scopus subject areas

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

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