A 1.6 mW 5.4 GHz transformer-feedback gm-boosted current-reuse LNA in 0.18/μm CMOS
نویسندگان
چکیده
Delivering high gain, low noise and good linearity simultaneously with low power consumption in fully-integrated CMOS low noise amplifiers (LNAs) has posed significant difficulty. This paper presents a 19 dB gain, 2.4 dB noise figure, common-gate common-source (CG-CS) single-ended LNA operating at 5.4 GHz. Using gm-boosting, current-reuse and transformer feedback techniques, the LNA mitigates several design issues seen in the widely used common-source common-source current-reuse (CS-CS) LNAs and improves the IIP3 and reverse isolation of CG-CS schemes by 7 dB and 8 dB, respectively, while significantly reducing power consumption. Implemented in 0.18μm CMOS the LNA uses only 1.3 mA bias current from a 1.2V supply.
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