A Tri (K/Ka/V)-Band monolithic CMOS Low noise amplifier with shared signal path and variable gains

Chia Jen Liang, Ching Wen Chiang, Jia Zhou*, Rulin Huang, Kuei-Ann Wen, Mau-Chung Chang, Yen-Cheng Kuan


研究成果: Conference contribution同行評審

7 引文 斯高帕斯(Scopus)


This paper presents a single-signal-path tri-band (K/Ka/V) variable-gain low noise amplifier (LNA) fabricated in 28-nm bulk CMOS technology. This LNA uses a common-gate input stage with a triple-coupling transformer (TCT) to achieve better impedance matching across three desired bands than those of prior arts and to enable the necessary gm-boosting to suppress undesired noise. Each LNA stage (except the final one) is loaded with a PMOS switched inductor carefully designed to trade off parasitic capacitances/resistances between off/on states. PMOS devices are also used in parallel with switched inductors as variable resistors to realize the variable gain functionality. Accordingly, the load quality factors can be changed to make the LNA power gain adjustable. This LNA consists of six stages and offers variable power gains from -5.5 to 29.9 dB (24 GHz), -5.5 to 32.4 dB (33 GHz), and -11.5 to 22.2 dB (50 GHz) with respective minimum noise figures of 5.63 dB, 4.55 dB, and 5.96 dB. This LNA consumes 25.6 mW from a 1-V supply and occupies 0.22 mm2 without pads in silicon area.

主出版物標題IMS 2020 - 2020 IEEE/MTT-S International Microwave Symposium
發行者Institute of Electrical and Electronics Engineers Inc.
出版狀態Published - 8月 2020
事件2020 IEEE/MTT-S International Microwave Symposium, IMS 2020 - Virtual, Los Angeles, United States
持續時間: 4 8月 20206 8月 2020


名字IEEE MTT-S International Microwave Symposium Digest


Conference2020 IEEE/MTT-S International Microwave Symposium, IMS 2020
國家/地區United States
城市Virtual, Los Angeles


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