A compact single layer branch-line coupler for ultra-wideband (UWB) applications
Published online by Cambridge University Press: 04 April 2016
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
- 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
References
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