講演情報
[C-12-22]A Ka-Band Low Noise Amplifier with 3.4dB Noise Figure For 5G and Beyond
〇YUXUAN LIU1, Minzhe Tang1, Dongfan Xu1, Minghao Fan1, Yilun Chen1, Ziyuan Ren1, Kenichi Okada1 (1. Institute of Science Tokyo)
キーワード：
Low Noise Amplifier、RFIC、millimeter-wave
This paper presents a Ka-band low-noise amplifier (LNA) for 5G and beyond wireless receiver front-end applications. To achieve low noise figure, high gain, and compact implementation, the proposed LNA adopts a current-reuse input stage followed by a common-source gain stage. The input stage employs a Gm-boosted common-gate topology cascaded with a common-source amplifier, enabling broadband input matching and noise matching while improving gain efficiency. In addition, the load inductor is co-designed with the Gm-boosting transformer to reduce passive area and suppress undesired magnetic coupling. The fabricated LNA achieves a minimum measured noise figure of 3.4 dB at 28 GHz and a peak gain of 23 dB. More than 20 dB gain is maintained from 26 to 31 GHz, demonstrating the suitability of the proposed design for Ka-band high-sensitivity receiver systems.