Compact 5G Hairpin Bandpass Filter Using Non-Uniform Transmission Lines Theory

Authors

  • Sahar Saleh School of Electrical and Electronic Engineering Universiti Sains Malaysia, Penang, 14300, Malaysia
  • Widad Ismail School of Electrical and Electronic Engineering Universiti Sains Malaysia, Penang, 14300, Malaysia
  • Intan S. Zainal Abidin 1 School of Electrical and Electronic Engineering Universiti Sains Malaysia, Penang, 14300, Malaysia
  • Moh’d H. Jamaluddin Wireless Communication Centre Universiti Teknologi Malaysia, Johor Bahru, Johor, 81310, Malaysia

Keywords:

5G, hairpin bandpass filter, HFSS and CST, non-uniform transmission lines theory, uniform transmission line

Abstract

A compact three order 5G low frequency band Hairpin Bandpass Filter (HPBF) is analyzed, designed and fabricated in this paper. The designed filter operates at 5G frequency range (5.975-7.125 GHz). 17.76% compactness in each λ/2 uniform transmission line (UTL) resonator of the filter is achieved by applying Non-Uniform Transmission Lines (NTLs) theory. This compactness will make modern wireless transmitter and receiver designs more compatible. Study on the best reduction size percentage and suitable constraints to design the required NTL resonator is highlighted in this paper. Six samples with different size reductions percentage are fabricated and measured. The simulation is carried out in this study uses High Frequency Structure Simulator (HFSS) software and Computer Simulation Technology (CST) software. The simulated results for UTL HPBF and NTL HPBF with the six cases are verified with measurement. For the best size reduction percentage design, the measured results demonstrated that the 6.55 GHz NTL and UTL HPBF show good impedance matching within the unsilenced 5G frequency band.

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Author Biographies

Sahar Saleh, School of Electrical and Electronic Engineering Universiti Sains Malaysia, Penang, 14300, Malaysia

Sahar Saleh received her bachelor’s degree in Electronics and Communication Engineering and M.Sc. degree in Wireless Communications Engineering from Aden University, Yemen, and Yarmouk University, Jordan in 2010 and 2016, respectively. Her research work is mainly on Microwaves Engineering and Numerical Techniques in Electromagnetics. She worked as a Junior Lecturer at Faculty of Engineering at Aden University, Yemen in 2012. Currently, she is pursuing her Ph.D. study at Universisti Sains Malaysia in the field of microwave and satellite systems.

Widad Ismail, School of Electrical and Electronic Engineering Universiti Sains Malaysia, Penang, 14300, Malaysia

Widad Ismail (M’04) received the bachelor’s (Hons.) degree in Electronics and Communication Engineering from the University of Huddersfield, U.K., in 1999, and the Ph.D. degree (Active Integrated Antenna with Image Rejection) in Electronics and Communication Engineering from the University of Birmingham, U.K., in 2004. She is currently a Professor and a Project Coordinator with the AutoID Laboratory, Universiti Sains Malaysia. Her main areas of research are wireless system design, RFID, active integrated antennas, and RF and microwave systems engineering. She is a member of the Wireless World Research Forum.

Intan S. Zainal Abidin, 1 School of Electrical and Electronic Engineering Universiti Sains Malaysia, Penang, 14300, Malaysia

Intan Sorfina Zainal Abidin received her M.Eng. in Electronics Engineering from University of Surrey, Guildford, UK in 2008. She then worked with Motorola Solutions, Penang, Malaysia as an Electrical Engineer for 2 years before moving to Celestica, Kulim, Malaysia to work as a Product Engineer. In 2017, She received her Ph.D. from University of Surrey for her Ph.D. under the 5G Innovation Centre in Institute of Communication System and proceed to work as a Senior Lecturer at School of Electrical and Electronic Engineering, Universiti Sains Malaysia, specializing in Electronics Communication System, Antenna, Channel Propagation, RF, Microwave Engineering and MIMO system. Abidin is a member of IEEE.

Moh’d H. Jamaluddin, Wireless Communication Centre Universiti Teknologi Malaysia, Johor Bahru, Johor, 81310, Malaysia

Mohd Haizal Jamaluddin received bachelor's and master's degrees in Electrical Engineering from Universiti Teknologi Malaysia, Malaysia, in 2003 and 2006, respectively, and the Ph.D. degree in Signal Processing and Telecommunications from the Université de Rennes 1, France, in 2009, with a focus on microwave communication systems and specially antennas such as dielectric resonator and reflectarray and dielectric dome antennas. He is currently an Associate Professor with the Wireless Communication Centre, Faculty of Electrical Engineering, Universiti Teknologi Malaysia. His research interests include dielectric resonator antennas, printed microstrip antennas, MIMO antennas and DRA reflect array antenna.

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Published

2021-02-01

How to Cite

[1]
Sahar Saleh, Widad Ismail, Intan S. Zainal Abidin, and Moh’d H. Jamaluddin, “Compact 5G Hairpin Bandpass Filter Using Non-Uniform Transmission Lines Theory”, ACES Journal, vol. 36, no. 2, pp. 126–131, Feb. 2021.

Issue

2021: Vol 36 Iss 2

Section

Articles