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A CMOS MedRadio Receiver RF Front-End With a Complementary Current-Reuse LNA

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4 Author(s)
Hyouk-Kyu Cha ; Institute of Microelectronics, A*STAR (Agency for Science, Technology, and Research), Singapore ; M. Kumarasamy Raja ; Xiaojun Yuan ; Minkyu Je

An ultra-low-power 401-406-MHz Medical Device Radiocommunications Service receiver RF front-end for biomedical telemetry applications is implemented using 0.18-μm CMOS technology. A single-ended complementary current-reuse low-noise amplifier (CCRLNA) is proposed that achieves a power gain of 20 dB, noise figure (NF) of 2.8 dB, IIP3 of -8.1 dBm, and second-order intercept point of +34 dBm while consuming only 150 μW at 1-V supply voltage. The total receiver RF front-end, including the proposed CCRLNA, in-phase/quadrature folded mixers, and local oscillator buffers, achieves a conversion gain of 28.7 dB, NF of 5.5 dB, and third-order intercept point of -25 dBm while consuming less than 500 μW from a 1-V supply voltage and occupying 0.7 mm2 of core die area.

Published in:

IEEE Transactions on Microwave Theory and Techniques  (Volume:59 ,  Issue: 7 )