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A Compact 6.5-W PHEMT MMIC Power Amplifier for Ku-Band Applications

2007; IEEE Microwave Theory and Techniques Society; Volume: 17; Issue: 2 Linguagem: Inglês

10.1109/lmwc.2006.890347

1558-1764

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

Microwave Engineering and Waveguides

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 8.554mm 2 (3.64mmtimes2.35mm) is designed to fully match 50-Omega input and output impedance. Under 8V and 2000mA dc bias condition, the PA deliver 38.1dBm (6.5W) saturated output power, 10.5-dB small signal gain and peak power added efficiency of 24.6% from 13.6 to 14.2GHz. This MMIC also achieved the best power densities (760mW/mm 2 ) at Ku band reported to date