A Novel Matching Technique for Microstrip Feeds usingOptimized Tapering

Authors

  • Nasim Zahra Department of Electrical Engineering University of Engineering and Technology, Lahore, 54890, Pakistan, Department of Electrical, Electronics and Computer Systems University of Sargodha, 40162, Pakistan https://orcid.org/0000-0001-8478-1497
  • Inam Elahi Rana Bismillah Electronics Lahore, 54600, Pakistan
  • Farooq Mukhtar Department of Electrical Engineering University of Engineering and Technology, Lahore, 54890, Pakistan
  • Mahrukh Khan Electrical and Computer Engineering Department, The College of New Jersey Ewing, NJ 08628, USA

DOI:

https://doi.org/10.13052/2025.ACES.J.400508

Keywords:

5G antenna, impedance matching technique, microstrip feed, microstrip transition, substrate-integrated waveguide, tapered microstrip

Abstract

This paper presents an efficient impedance matching technique for microstrip feed structures, providing a practical solution for seamless connector integration in high-frequency systems. Unlike conventional approaches that assume predefined connector compatibility, this method allows adaptation to various connector constraints without requiring major structural modifications. A linearly tapered microstrip feed with tapered substrate is proposed to ensure stable impedance matching, reduce signal reflection, and enhance overall system performance. The technique is demonstrated on a fabricated substrate-integrated waveguide antenna, utilizing a Rogers RT/Duroid 5880 substrate configured for 50 Ω impedance and adapted for integration with a specific coaxial connector. Experimental validation confirms excellent agreement between simulated and measured results, verifying its effectiveness in achieving impedance matching, minimizing return loss, and ensuring seamless integration with the connector while preserving radiation characteristics. This work presents a versatile feed design approach that addresses a key challenge in RF and microwave engineering, paving the way for improved performance and broader applicability in advanced communication systems and integrated circuit applications.

 

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Author Biographies

Nasim Zahra, Department of Electrical Engineering University of Engineering and Technology, Lahore, 54890, Pakistan, Department of Electrical, Electronics and Computer Systems University of Sargodha, 40162, Pakistan

Nasim Zahra received her B.Sc. degree in Electrical Engineering from the University of Engineering and Technology Lahore (U.E.T Lahore), Lahore, Pakistan, in 2007, and the M.Sc. degree in Electrical Engineering (Electronics and Telecommunication) from the University of Engineering and Technology Lahore (U.E.T Lahore), Lahore, Pakistan, in 2013. Currently pursuing a Ph.D. degree in Electrical Engineering from the University of Engineering and Technology Lahore (U.E.T Lahore), Lahore, Pakistan. Research interests include antenna theory and design, array signal processing, reconfigurable antennas, electromagnetics, and electromagnetic compatibility. She also serves as assistant professor at college of engineering and technology, AIC, University ofSargodha.

Inam Elahi Rana, Bismillah Electronics Lahore, 54600, Pakistan

Inam Elahi Rana received his B.Sc. degree in Electrical Engineering from U.E.T, Lahore, in 1974 and joined Suparco. After receiving a scholarship from Suparco, he joined UCLA and earned M.S. and Ph.D. degrees in 1977 and 1979, respectively. Having had a mixed career in both industry and academia, he has been involved in the design and development of several projects for different organizations. He has taught various courses in electromagnetics, antennas, electromagnetic compatibility, and microwave engineering at different universities, both at undergraduate and graduate levels. Currently, he serves as the CEO of Bismillah Electronics Lahore.

Farooq Mukhtar, Department of Electrical Engineering University of Engineering and Technology, Lahore, 54890, Pakistan

Farooq Mukhtar received his B.Sc. degree in Electrical Engineering from the University of Engineering and Technology (U.E.T), Lahore, Pakistan, in 2007 and started his career as a tutor for high-frequency courses and as a Lab-Engineer for electromagnetic compatibility (EMC) testing at the same university. He then earned an M.Sc. in Microwave Engineering and a Dr.-Ing. degree under Prof. Peter Russer from the Technical University Munich, Germany, in 2009 and 2014. During that time, he worked as a part-time scientific co-worker at the Institute for Nanoelectronics on algorithms for Brune’s synthesis of multiport circuits and conducted tutorials on the post-graduate course ’Quantum Nanoelectronics.’ Currently, he is an assistant professor at U.E.T, Lahore, working on high-frequency topics: leaky wave and configurable antennas, filters, and metamaterials. He is also consulting Smart Wires, Inc. through Powersoft19 in the areas of electromagnetic simulations andcompatibility.

Mahrukh Khan, Electrical and Computer Engineering Department, The College of New Jersey Ewing, NJ 08628, USA

Mahrukh Khan received her Bachelor of Science and Master of Science degrees in electrical engineering from the University of Engineering and Technology, Lahore, Pakistan, in 2007 and 2011, respectively. She earned her Ph.D. degree in electrical engineering from the University of Missouri-Kansas City (UMKC) in 2017. Before joining TCNJ, Dr. Khan served as an Assistant Research Professor at the Missouri Institute of Defense and Energy (MIDE) at UMKC. Prior to that, she was a Post-Doctoral Fellow in UMKC’s Micro and Nano-Technology Lab from January 2018 to December 2019. Dr. Khan is an assistant professor at The College of New Jersey (TCNJ) and co-director of the Microwave and Wireless Communication Lab (MWCL). She has published over 30 research articles and conference papers, receiving more than 250 citations. A 2022 IEEE APS Young Professional Ambassador, she has also earned recognition in the 2015 Altair FEKO student competition and the UMKC SGS fellowship. She serves as a reviewer for leading journals, including IEEE Antennas and Propagation Magazine and IET Microwaves, Antennas, and Propagation. Dr. Khan is a senior member of URSI and an active member of IEEE Young Professionals and IEEE Women in Engineering Societies.

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Published

2025-05-30

How to Cite

[1]
N. . Zahra, I. E. . Rana, F. . Mukhtar, and M. . Khan, “A Novel Matching Technique for Microstrip Feeds usingOptimized Tapering”, ACES Journal, vol. 40, no. 05, pp. 443–450, May 2025.

Issue

2025: Vol 40 Iss 5

Section

General Submission

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