IEICE Electronics Express
Online ISSN : 1349-2543
A 0.07-3GHz wideband front-end for SDR receiver with 2.3dB NF and 12dBm IIP3 in 65nm CMOS
Yupeng ShenHaoming LiXubin ChenJiarui LiuHua Chen
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Keywords: SDR, receiver, front-end, LNA, Mixer
JOURNALS FREE ACCESS Advance online publication

Article ID: 16.20181089


This paper presents a wideband (0.07-3GHz) receiver front-end realized in 65nm CMOS technology for mobile Software-Defined Radio (SDR) applications. A more power-efficient wideband common-gate low-noise amplifier (LNA) featuring a common-source path for noise-canceling is proposed to trade-off linearity and noise figure (NF). A current commutating down conversion passive mixer with transimpedance amplifier is applied to achieve low flicker noise and high linearity with low supply voltage. Measurements show that the front-end achieves conversion gain higher than 42dB. The measured NF ranges from 2.28 to 3.68dB in the covered frequency range and IIP3 varies from 9 to 12dBm versus different frequencies. The front-end occupies an active area of 0.8mm2 and consumes a power of 40mW from 1.2V supply voltage.

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