NDLI: Ultra-wideband printed ridge gap waveguide hybrid directional coupler for millimetre wave applications

Content Provider	IET Digital Library
Author	Ali, Mohamed Mamdouh Mahmoud Shams, Shoukry I. Sebak, Abdelrazik
Abstract	The evolution of a wireless communication system to the fifth generation is accompanied by a huge improvement in the performance of the communication system through providing high data rate with a better coverage area. Hence, 5G technology requires access to millimetre wavebands where more spectra are available for high-speed applications. This technological progress motivates the research community to develop the essential microwave components, specially couplers, through the use of state of the art guiding structure such as printed ridge gap waveguide (PRGW). In this study, the design of ultra-wideband 3-dB planar quadrature hybrid coupler based on PRGW technology is proposed. A systematic design procedure for the proposed coupler is presented and illustrated. The proposed directional coupler is fabricated and measured, where the measured results show good agreement. The presented coupler covers over 26% bandwidth centred at 30 GHz. The presented coupler has a measured wide impedance bandwidth of a 26.5% centred at 30 GHz based on −10 dB threshold. The phase difference between output ports is 90 ° ± ° 5 over 23% relative bandwidth. On the other hand, the total bandwidth is limited by the amplitude imbalance, which has a bandwidth of 13% for ± 0.75 dB variation.
Starting Page	1181
Ending Page	1187
Page Count	7
ISSN	17518725
Volume Number	13
e-ISSN	17518733
Issue Number	Issue 8, Jul (2019)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-map/13/8
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-map.2018.5511
Journal	IET Microwaves, Antennas & Propagation
Publisher Date	2019-03-11
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	5G Mobile Communication 5G Technology Directional Couplers Fifth Generation Frequency 30.0 GHz High-speed Application Hybrid Directional Coupler Microwave Component Millimetre Wave Application PRGW Technology Ridge Waveguide State of The Art Guiding Structure Ultra-wideband Planar Quadrature Hybrid Coupler Ultra-wideband Printed Ridge Gap Waveguide Waveguide And Microwave Transmission Line Waveguide And Microwave Transmission Line Component Waveguide Couplers Wireless Communication System
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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