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Conference Paper
Upper-Mid-Band Low-Noise Amplifier Using a Transformer Input Stage
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- Authors
- Sunwoo Kong, Hui-Dong Lee, Bonghyuk Park, Dong-Pil Chang
- Issue Date
- 2026-07
- Citation
- International Technical Conference on Circuits/Systems, Computers and Communications (ITC-CSCC) 2026, pp.1-3
- Publisher
- IEEE
- Language
- English
- Type
- Conference Paper
- Abstract
- This paper presents a low-noise amplifier (LNA) designed for upper-mid band 6G applications. The proposed LNA employs a two-stage architecture consisting of a common-gate input stage with a transformer-based matching network and a differential common-source output stage. The input transformer improves the effective transconductance and reduces noise con- tribution from subsequent stages. Fabricated in a 65-nm CMOS process, the LNA occupies an active area of 600 μm × 885 μm. Measurement results demonstrate a 3-dB bandwidth of 3.05 GHz over 6.53–9.58 GHz, with a peak gain of 19.31 dB and a minimum noise figure of 2.06 dB. The measured input 1-dB compression point is –18.8 dBm, and the power consumption is 19.8 mW.
- Keyword
- LNA, Transformer, Upper-mid band
- KSP Keywords
- 3-dB bandwidth, 5 GHz, Active area, Low-noise amplifier(LNA), Output Stage, Power Consumption, Two-stage architecture, common gate, common-source, matching network, measurement results