Design and Analysis of a Broadband Microwave Amplifier

Authors

Obinna Okoyeigbo
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Augustus E Ibhaze
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Ayobami Olajube
Olamilekan Shobayo
Tobiloba Somefun
Onyinyechi Steve-Essi
DOI: https://doi.org/10.52549/ijeei.v9i1.2708
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Published: 23-03-2021 • Issue: Vol. 9 No. 1: March 2021 • Section: Regular paper

Abstract

This paper presents the procedures involved in the design and analysis of a microstrip broadband microwave amplifier. For system design, simulation, optimization and analysis, a Computer Aided Design (CAD) tool know as Agilent Advanced Design System (ADS) was employed. The amplifier device- FLC317MG-4 FET, was tested for stability, and was observed to be unconditionally stable between 2 to 6 GHz frequency band. Two possible ideal matching circuits were investigated to identify the best matching circuit with the maximum transducer power gain. It was observed that the quarter-wave transformer with parallel open circuit stub, gave a high gain at a wider range of frequency (larger bandwidth/ broadband), than the other matching circuit. Hence, it was employed for the broadband amplifier design using microstrips, and achieved a maximum flat gain of about 9.8 dB to 10.118 dB, at a bandwidth of 3.5 to 4.5 GHz.

How to Cite

[1]
O. Okoyeigbo, A. E. Ibhaze, A. Olajube, O. Shobayo, T. Somefun, and O. Steve-Essi, “Design and Analysis of a Broadband Microwave Amplifier”, IJEEI, vol. 9, no. 1, pp. 210–219, Mar. 2021, doi: 10.52549/ijeei.v9i1.2708.