Design and optimization of CMOS LNA with ESD protection for 2.4 GHz WSN application |
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| Authors: | Li Zhiqun Chen Liang Zhang Hao |
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| Affiliation: | 1. Institute of RF- & OE- ICs, Southeast University, Nanjing 210096, China;RFIC and System Engineering Research Center of Ministry of Education of China, Southeast University, Nanjing 210096, China;Research Center of Sensor Network Technology, Southeast University, Wuxi 214135, China
2. Institute of RF- & OE- ICs, Southeast University, Nanjing 210096, China;RFIC and System Engineering Research Center of Ministry of Education of China, Southeast University, Nanjing 210096, China |
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| Abstract: | A new optimization method of a source inductive degenerated low noise amplifier (LNA) with electrostatic discharge protection is proposed.It can achieve power-constrained simultaneous noise and input matching.An analysis of the input impedance and the noise parameters is also given.Based on the developed method,a 2.4 GHz LNA for wireless sensor network application is designed and optimized using 0.18-μm RF CMOS technology.The measured results show that the LNA achieves a noise figure of 1.59 dB,a power gain of 14.12 dB,an input 1 dB compression point of-8 dBm and an input third-order intercept point of 1 dBm.The DC current is 4 mA under a supply of 1.8 V. |
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| Keywords: | LNA ESD protection noise and input impedance matching CMOS |
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