American Journal of Applied Sciences

Design of A Microwave Amplifier for Wireless Application

M. Habib Ullah, Badariah Bais, Norbahiah Misran, Baharudin Bin Yatim and M. Islam

DOI : 10.3844/ajassp.2012.32.39

American Journal of Applied Sciences

Volume 9, Issue 1

Pages 32-39


Problem statement: Low-Noise Amplifiers (LNA) are very indispensable components in the design of numerous types of communication receivers employed in microwave technology. This paper is presents the design and development of low bias(Vce = 8v, Ic =10 mA) single stage low noise microwave amplifier operating in 1.5GHZ frequency range, Gain 13dB ± 0.5dB, input/output return loss < -10dB, noise figure ≤2.0dB and used of Agilent AT-41486 bipolar junction transistor. Approach: The principal design target is to obtain a minimum noise figure while concomitantly achieving a maximum gain by presenting the optimum noise impedance (Zopt) which is characteristically implemented by adding a matching circuit between the source and the input of the amplifier. Results: The proposed low-noise amplifier for microwave wireless application is designed, simulated and optimized using Serenade Harmonica (by Ansoft Corporation) and Advance Design System (ADS) software by Agilent. Conclusion: In this paper a low-noise amplifier operated at 1.5 GHz. is designed because of the significant roles played in the field of microwave communication technology, which includes the application in the output stage of a transmitter where the signals needs to be strengthen before transmission.


© 2012 M. Habib Ullah, Badariah Bais, Norbahiah Misran, Baharudin Bin Yatim and M. Islam. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.