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0.6–3-GHz Wideband Receiver RF Front-End With a Feedforward Noise and Distortion Cancellation Resistive-Feedback LNA

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5 Author(s)
Xiao Wang ; State Key Lab. of Applic. Specific Integrated Circuits (ASICs) & Syst., Fudan Univ., Shanghai, China ; Sturm, J. ; Na Yan ; Xi Tan
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A novel wideband receiver RF front-end, including a resistive negative feedback wideband low-noise amplifier (LNA) with feedforward noise and distortion cancellation and a current commutating down conversion passive mixer with biquad trans-impedance amplifier, is presented in this paper. In comparison to conventional resistive negative feedback LNAs, theory analysis and experimental results for the proposed LNA circuit shows improved performance parameters, including voltage gain, noise figure (NF), and input-referred third-order intercept point (IIP3), especially helpful for wideband LNA design in modern deep-submicrometer CMOS. A wideband receiver RF front-end fabricated in 0.13-μm CMOS, based on the proposed feedforward noise and distortion-cancellation resistive-feedback LNA, has 42-48-dB conversion gain with 0.8-12-MHz tunable IF -3-dB bandwidth and 12-dB adjacent channel selectivity at 2 fp, -14-dBm IIP3, and 3-dB NF double-sideband with 10-kHz flicker-noise corner frequency.

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Microwave Theory and Techniques, IEEE Transactions on  (Volume:60 ,  Issue: 2 )