A single-supply Ku-band 1-W power amplifier MMIC with compact self-bias PHEMTs

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

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)


In this letter, the design of a self-bias 1.8-mm AlGaAs/InGaAs/GaAs pseudomorphic high electron mobility transistor with a compact source capacitor for operation in Ku-band frequency is described. Based on the proposed device, a self-bias Ku-band 1-W two-stage power amplifier monolithic microwave integrated circuit (MMIC) is also demonstrated. Under a single bias condition of 8 V and 630 mA, the self-bias MMIC possesses 14.2-dB small-signal gain, 30.2-dBm output power at 1-dB gain compression point with 19.2% power added efficiency and 31.3-dBm saturated output power with 22.5% power added efficiency at 14 GHz. With the performance comparable to the dual-bias MMIC counterpart, the proposed self-bias MMIC is more attractive to system designers on very small aperture terminal applications.

Original languageEnglish
Article number1637485
Pages (from-to)330-332
Number of pages3
JournalIEEE Microwave and Wireless Components Letters
Issue number6
Publication statusPublished - 2006 Jun

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Electrical and Electronic Engineering


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