A Compact 6.5-W PHEMT MMIC Power Amplifier for Ku-Band Applications |
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| Authors: | Lin C.-H. Liu H.-Z. Chu C.-K. Huang H.-K. Liu C.-C. Chang C.-H. Wu C.-L. Chang C.-S. Wang Y.-H. |
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| Affiliation: | Dept. of Electr. Eng., Nat. Cheng Kung Univ., Tainan; |
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| Abstract: | 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 8.554mm2 (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/mm2) at Ku band reported to date |
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