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0.1-19.7 GHz Wide Band Coverage Power Amplifier
发布时间：2025-01-20
The research team proposed a two-stage ultra-wideband low ripple power amplifier (PA) based on LC resonant network, which simultaneously solves the problems of bandwidth limitation of traditional narrowband matching network and excessive area of traditional distributed amplifier. Based on the T-coil matching network, the breakthrough input parasitic capacitance is resonated within the broadband, which enables the proposed PA to achieve good input matching over the whole frequency band. The bandwidth limitation of conventional power amplifiers is broken by employing bandwidth expansion techniques in the interstage and output matching networks. Meanwhile, the mutual constraints of bandwidth and gain ripple are decoupled based on the peak-frequency misalignment tuning scheme, thus realizing ultra-low gain ripple under ultra-wideband. The PA is fabricated based on a 28nm CMOS process and achieves a gain ripple of ±0.5dB under ultra-wideband applications from 0.1-19.7GHz. The proposed PA achieves less than 11 dB return loss, 15.8-16.8 dB gain, 9.1-11.6 dBm saturated output power, and 3.9-7.7% PAE over the entire frequency band.
The related results were published in 2024 ESSERC, the top conference on integrated circuits, with An Sun, a PhD student at the School of Microelectronics, Fudan University, as the first author.
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