A high-gain, low-noise 3.1–10.6 GHz ultra-wideband LNA in a 0.18μm CMOS

  • Hamid Nooralizadeh Islamshahr Branch, Islamic Azad University
  • Behnam Babazadeh Daryan Electrical Engineering Department, Islamshahr Branch, Islamic Azad University, Islamshahr, Tehran, Iran
Keywords: LNA, UWB, CMOS technology, Current-reuse technique, Capacitive cross-coupling technique, CG-CS amplifier

Abstract

An ultra-wideband (UWB) common gate-common source (CG-CS) low-noise amplifier (LNA) in a 0.18μm CMOS technology is presented in this paper. To obtain a high and flat power gain with low noise and good input impedance matching in the entire 3.1–10.6 GHz UWB band among low power consumption, a capacitive cross-coupling fully differential amplifier with the current-reuse technique is proposed. The current–reuse technique is used to achieve a wideband and reduce power consumption. The capacitor cross coupling technique is used to gm-boosting and hence to improve the NF of the amplifier. Therefore, the dependency between noise figure (NF) and input impedance matching is reduced. The proposed CG-CS amplifier has a fairly low NF compared with the other previous works in similar technology. In addition, a good power gain over all bandwidth and a high isolation with good input/output impedance matching are achieved. The minimum NF is 1.8 dB, the maximum power gain is 14.2 dB, the inverse gain is <-50 dB, the input and output matching S11 and S22 are <-10.3 dB and <-11.3 dB, respectively. Moreover, the input third-order intercept point (IIP3) is -5 dBm with core power consumption of 10.1 mW and supply voltage of 1.8 V.

Author Biography

Hamid Nooralizadeh, Islamshahr Branch, Islamic Azad University
Hamid Nooralizadeh was born in Sarab, Iran, on 10 May, 1968. He received the B.S. degree in communications engineering from Tehran Science and Industry University, Tehran, Iran, in 1992 and the M.S. degree in communications engineering from Tehran South Branch, Islamic Azad University, Tehran, Iran, in 1996. In September 1999, he joined the Department of Electrical and Electronics Engineering, Tehran South Branch, Islamic Azad University, as a Faculty member. In 2005, he also joined the Department of Electrical Engineering, Tehran Science and Research Branch, Islamic Azad University, as a Ph.D. student. In October 2006, he joined the Department of Electrical and Electronics Engineering, Islamshahr-Tehran Branch, Islamic Azad University, as a Faculty member. He received the Ph.D. degree in communications engineering from Tehran Science and Research Branch, Islamic Azad University, Tehran, Iran, in 2010. His research interests include channel estimation, MIMO, signal processing, and wireless communications.

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Published
2017-06-01
How to Cite
Nooralizadeh, H., & Babazadeh Daryan, B. (2017). A high-gain, low-noise 3.1–10.6 GHz ultra-wideband LNA in a 0.18μm CMOS. Majlesi Journal of Electrical Engineering, 11(2). Retrieved from http://mjee.iaumajlesi.ac.ir/index/index.php/ee/article/view/2093
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Articles