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A compact single layer branch-line coupler for ultra-wideband (UWB) applications

Published online by Cambridge University Press:  04 April 2016

Sangeetha Velan  and
Malathi Kanagasabai
Sangeetha Velan*
Affiliation:
Department of Electronics and Communication Engineering, College of Engineering, Guindy Campus, Anna University, Chennai 600 025, India. Phone: +919003237453
Malathi Kanagasabai
Affiliation:
Department of Electronics and Communication Engineering, College of Engineering, Guindy Campus, Anna University, Chennai 600 025, India. Phone: +919003237453
*
Corresponding author:V. Sangeetha Email: vsangeethavelan@gmail.com
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Abstract

This paper presents the design of a compact, planar, single layer, tri-section ultra-wideband (UWB) branch-line (BL) coupler. The prototype offers 10 dB return loss characteristics from 3.1 to 13.7 GHz. Over a major portion of the band, phase imbalance of ±10° is achieved. The method of deploying multi stage impedance feed has been used to achieve improved bandwidth. To enhance the power output through the coupled port throughout the operating band, ring shaped slots have been introduced in the ground plane beneath the series arms. The performance of the fabricated prototype has also been validated experimentally.

Keywords

Passive components and circuitsModelingSimulation and characterizations of devices and circuits
Type
Research Papers
Information
International Journal of Microwave and Wireless Technologies , Volume 9 , Issue 3 , April 2017 , pp. 505 - 508
Copyright
Copyright © Cambridge University Press and the European Microwave Association 2016 

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References

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