A compact 6.5-W PHEMT MMIC power amplifier for Ku-band applications

Che Hung Lin, Hong Zhi Liu, Chen Kuo Chu, Hou Kuei Huang, Chi Chuan Liu, Ching Hsueh Chang, Chang Luen Wu, Chian Sern Chang, Yeong Her Wang

Research output: Contribution to journalArticlepeer-review

22 Citations (Scopus)


A compact 6.5-W AlGaAs/InGaAs/GaAs PHEMT monolithic microwave integrated circuit (MMIC) power amplifier (PA) for Ku-band applications is proposed. This two-stage amplifier with chip size of 8.554 mm2 (3.64 mm × 2.35 mm) is designed to fully match 50-Ω input and output impedance. Under 8 V and 2000 mA dc bias condition, the PA deliver 38.1 dBm (6.5 W) saturated output power, 10.5-dB small signal gain and peak power added efficiency of 24.6% from 13.6 to 14.2 GHz. This MMIC also achieved the best power densities (760 mW/mm2) at Ku band reported to date.

Original languageEnglish
Pages (from-to)154-156
Number of pages3
JournalIEEE Microwave and Wireless Components Letters
Issue number2
Publication statusPublished - 2007 Feb

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Electrical and Electronic Engineering


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