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An ultra-wideband current-reused LNA MMIC with negative feedback and adaptive bias networks

Published online by Cambridge University Press:  09 December 2024

Xuefei Xuan Open the ORCID record for Xuefei Xuan [Opens in a new window] ,
Zhiqun Cheng ,
Tingwei Gong ,
Zhiwei Zhang  and
Chao Le
Xuefei Xuan*
Affiliation:
The School of Electronics and Information, Hangzhou Dianzi University, Hangzhou, China The School of Electronic Engineering, Huainan Normal University, Huainan, China
Zhiqun Cheng
Affiliation:
The School of Electronics and Information, Hangzhou Dianzi University, Hangzhou, China School of Information Engineering, Xinjiang Institute of Technology, Xinjiang, China
Tingwei Gong
Affiliation:
The School of Electronics and Information, Hangzhou Dianzi University, Hangzhou, China
Zhiwei Zhang
Affiliation:
The School of Electronics and Information, Hangzhou Dianzi University, Hangzhou, China
Chao Le
Affiliation:
The School of Electronics and Information, Hangzhou Dianzi University, Hangzhou, China
*
Corresponding author: Xuefei Xuan; Email: [email protected]
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Abstract

An ultra-wideband current-reused low-noise amplifier (LNA) monolithic microwave integrated circuit design is presented in this letter. Negative feedback networks are employed at both stages of the proposed LNA to expand bandwidth. Furthermore, source adaptive bias networks is designed in the first stage and combined with a current-reused construction to acquire a compact chip size and maintain low power consumption. Then, the validation of design theory is implemented by employing a 0.15-µm gallium arsenide pseudomorphic high-electron-mobility transistor process. The measured results show that the proposed LNA achieves a small signal gain of 15.5–17.8 dB, a noise figure of 3–3.65 dB, and an output 1 dB compression point (OP1 dB) of 14.5–15.5 dBm from the target bandwidth of 2–18 GHz. In addition, the fabricated LNA consumes 220 mW from a 5 V supply and occupies a chip area of 1.2 × 1.5 mm2.

Keywords

adaptive bias networkscurrent-reusedlow-noise amplifier (LNA)negative feedback networks (NFNs)ultra-wideband (UWB)
Type
Research Paper
Information
International Journal of Microwave and Wireless Technologies , Volume 16 , Issue 9 , November 2024 , pp. 1617 - 1622
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Copyright
© The Author(s), 2024. Published by Cambridge University Press in association with The European Microwave Association.

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