A wideband inductorless LNA utilizing common-source noise-canceling and cascode configuration

• DOI: 10.1016/j.mejo.2024.106252
• Publication Date: 2024-05-20T06:28:35Z
• Authors: Wenrun Xiao; Yanping Qiao; Xianming Liu; Xiaofeng Chen; Chao Huang; Donghui Guo
• Keywords: Wideband; Cascode; Gyrator

The common-source noise-canceling (CSNC) and the gyrator are known for alleviating trade-off between NF S11 in wideband LNAs. Moreover, departure of input-matching stage signal-amplifying CSNC facilitates design gyrator. Cascode configuration is exploited to boost feedback gain, enhancing gyrator-C effect broadening bandwidth. Therefore, large transistors can be used noise reduction while maintaining a wide operating Post-layout simulation results 40 nm CMOS technology show that circuit achieves an 1.37 dB–1.72 dB operation bandwidth 100 MHz 3.27 GHz. By contrast, minimum achieved by previously published inductorless LNAs around 2 dB. S21 18.9 obtained, making suitable low receivers. Besides, IIP3 (input third-order intercept point) −7.1 dBm consumes 13.1 mW at 1.2 V voltage supply. Being self-biased, core only 0.0034 area.