A Low Power Sub-GHz Wideband LNA Employing Current-Reuse and Device-Reuse Positive Shunt-Feedback Technique

Kuang Wei Cheng, Wei Wei Chen, Shang De Yang

研究成果: Article同行評審

6 引文 斯高帕斯(Scopus)

摘要

This letter presents a low-power current-reuse and device-reuse low noise amplifier (LNA) for sub-GHz wideband applications. Based on the shunt-feedback common-gate (SFBCG) hybrid topology and the proposed current/device-reuse shunt-feedback (SFB) technique, g_m restriction is alleviated. Moreover, the degree of design freedom is added by coupling the output to the gate of the in-phase current source transistor to activate positive feedback without extra power burden, thereby achieving a higher gain and lower noise design. Implemented in 90-nm CMOS technology, this LNA prototype has an active area of 0.075 mm2. The measurement results show a peak gain of 21.3 dB with 3-dB bandwidth of 50-800 MHz, noise figure of 4.5 dB, third-order intercept point (IIP3) of -7.1 dBm, and power dissipation of 1.2 mW.

原文English
頁(從 - 到)1455-1458
頁數4
期刊IEEE Microwave and Wireless Components Letters
32
發行號12
DOIs
出版狀態Published - 2022 12月 1

All Science Journal Classification (ASJC) codes

  • 凝聚態物理學
  • 電氣與電子工程

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