A novel simultaneous noise and input VSWR matching technique for broadband LNA |
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Authors: | Zhaohui Nie Jingfu Bao Ping Lin Fajuan Cai |
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Institution: | 1. University of Electronic Science and Technology of China, Chengdu 611731, China 2. China South Industries Group Corporation ( Chengdu ) Fire Control Technology Center, Chengdu 611731, China |
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Abstract: | The Simultaneous Noise and Input Voltage Standing Wave Ratio (VSWR) Matching (SNIM) condition for Low Noise Amplifier (LNA),
in principle, can only be satisfied at a single frequency. In this paper, by analyzing the fundamental limitations of the
narrowband SNIM technique for the broadband application, the authors present a broadband SNIM LNA systematic design technique.
The designed LNA guided by the proposed methodology achieves 10 dB power gain with a low Noise Figure (NF) of 0.53 dB. Meanwhile,
it provides wonderful input matching of 27 dB across the frequency range of 3∼5 GHz. Therefore, broadband SNIM is realized. |
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Keywords: | Low Noise Amplifier (LNA) Minimum Noise Figure (NF) Minimum input VSWR Simultaneous Noise and Input VSWR Matching (SNIM) |
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