_____________________________________________________________________________________________________ *Corresponding author: Email: ankur1990bist@gmail.com; Original Research Article Journal of Basic and Applied Research International 16(2): 88-95, 2016 ISSN: 2395-3438 (P), ISSN: 2395-3446 (O) International Knowledge Press www.ikpress.org HIGH GAIN CURRENT REUSE COMMON-GATE LNA FOR Wi-MAX APPLICATION SAURABH PARGAIEN 1 , ABHISHEK TOMAR 1 AND ANKUR SINGH BIST 2* 1 Department of Electronics and Comm. Engg., G. B. Pant University of Agriculture and Technology, Pantnagar, India. 2 Department of Computer Engg., KIET, Ghaziabad, India. AUTHORS’ CONTRIBUTIONS This work was carried out in collaboration between all authors. Author SP designed the study, wrote the protocol and interpreted the data. Author AT anchored the field study, gathered the initial data and performed preliminary data analysis. Authors ASB and SP managed the literature searches and produced the initial draft. All authors read and approved the final manuscript. Received: 28 th December 2015 Accepted: 13 th January 2016 Published: 29 th January 2016 __________________________________________________________________________________ ABSTRACT This paper presents low power CMOS RF front-end LNA architecture, input matching with inductive source degeneration topology and current reused technique. This LNA is used for Mobile WiMAX, IEEE 802.16e wireless application. This circuit provides performance from 3.34-3.92 GHz using a TSMC 0.18 m CMOS process. The fully integrated LNA exhibits a gain of 17.74 dB, a noise figure less than 1dB from 1.4 GHz to 4.9 GHz, operating at a supply voltage of 1.8 V. The input matching (S11) is –23.26 dB, (S12) is -22.55 dB with (S22) -11.3 dB. The design process is simulated using Advance Design System (ADS) software. Keywords: Low noise amplifier; high gain; low power; advance design system. 1. INTRODUCTION As communication environment changes from wired to wireless, handling high data, such as music, video and multimedia Mobile, WiMAX, IEEE 802.16e, is an emerging system for handheld mobile application. The high data rates over a broad range are achieved by orthogonal frequency division multiple access (OFDMA). Mobile WiMAX adopts multi-input multi-output (MIMO) for broadband wireless communication. Mobile Wi-MAX is spreading from laptop computer to smart phones and those mobile devices need compact design and low voltage operation [1-3]. Mobile Wi-MAX profile supports 16QAM3/4 Tx modulation. Mobile Wi-MAX systems are being deployed in the 2.3-2.7GHz and 3.3-3.8 GHz bands. In wireless appliances power consumption is a serious concern to protect battery lifetime, that’s also a challenge. Being the first stage of the receiver, the design of a low noise amplifier (LNA) including several goals is the main object. The LNA should be linear because nonlinearity results in inter-modulation distortion term that degrades the selectivity of the receiver [4-5]. This requires that the LNA introduce as little nonlinearity as possible. In an RF system, the figure-of merit of linearity is often expressed as third order or second order input Intermodulation product (IIP3 or IIP2). The design of an LNA also involves considerations of stability, reverse isolation, robustness. For portable and mobile applications, reasonable power consumption is another constraint [6-7]. All of these tradeoffs are