A Ku-Band Low Noise Amplifier Based on Transformer

Abstract:

The aim of this paper is to design and implement a low noise amplifier (LNA) based on transformer for a Ku-band application. The proposed CMOS LNA can have an enhanced gain because of the cascade topology, a highly flat gain response because of the RC feedback network, and a wide passband because of the source degeneration structure that effectively suppresses the Miller effect. The Ku-band LNA dissipates 22.175 mW power and achieves the S11 of -10.31 to -6.77 dB, S22 of -18.1 to -37.78 dB, flat S21 of 8.78 to 10.59 dB, and noise figure of 3.96 to 5.33 dB across the 12~18 GHz span. The measured output P1dB is approximately -2 dBm. The chip size including all testing pads is only 0.545 x 0.599 mm2.

• Periodical: Advanced Materials Research (Volumes 655-657)
• Pages: 1550-1554
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.655-657.1550
• Online since: January 2013
• Authors: Yu Lin Wang, Man Long Her, Ming Wei Hsu, Wen Ko
• Keywords: Low-Noise-Amplifier (LNA), Monolithic Microwave Integrated Circuit (MMIC), Noise Figure (NF)

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