A high output power V-band GaAs HEMT push–pull power amplifier using meandering baluns technology

Hsien-Chin Chiu, Po-Yu Ke and Fan-Hsiu Huang

Journal of Electromagnetic Waves and Applications, 2013, vol. 27, issue 15, 1869-1881

Abstract: A broadband, high saturation output power 0.15-μm gate length GaAs pseudomorphic high-electron mobility transistor push-pull V-band power amplifier has been demonstrated using meandering balun designs. Two meandering low-loss planar three-coupled-line baluns were used to form push–pull mechanism for both stages. The meandering baluns provide 180° differential outputs from the applied single-ended input at the V-band and the size was reduced for 23% compared to traditional design. The proposed push–pull amplifier achieved a peak small-signal gain of 16.8 dB at 58 GHz, a 3 dB bandwidth of 55–62 GHz, and a peak power added efficiency of 13.8%.

Date: 2013
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DOI: 10.1080/09205071.2013.826149

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