Design of broadband high-gain GaN MMIC power amplifier based on reactive/resistive matching and feedback technique

نویسندگان

چکیده

This paper presents a K-band two-stage power amplifier (PA) with compact circuit size of 1.8×0.87mm2. To guarantee broadband high-gain output performance, the optimal impedance domain and cell are determined through load/source-pull simulation K-point method, respectively. Reactive/resistive matching networks carefully employed to reduce equivalent gate capacitance, improve stability compensate for device’s negative gain roll-off slope. Meanwhile, combining feedback technique adopted in driver stage, entire operation bandwidth can be further extended. Under 12V pulse voltage supply, 37.4% peak power-added efficiency (PAE) at 26GHz 24±0.5dB small-signal gain, 30.3-31.6dBm saturated (Psat) across 22-27GHz obtained as shown experimental results.

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ژورنال

عنوان ژورنال: IEICE Electronics Express

سال: 2021

ISSN: ['1349-2543', '1349-9467']

DOI: https://doi.org/10.1587/elex.18.20210313