Design and Implementation of a Wilkinson Power Divider with Integrated Band Stop Filters Based on Parallel-coupled Lines

Authors

  • Ravee Phromloungsri Department of Computer and Communication Engineering Faculty of Technology Udon Thani Rajabhat University, Udon Thani 41000, Thailand https://orcid.org/0000-0002-3614-3404
  • Somchat Sonasang Department of Electronic Technology Faculty of Industrial Technology Nakhon Phanom University, Nakhon Phanom 48000, Thailand https://orcid.org/0000-0002-3261-4547

DOI:

https://doi.org/10.13052/2023.ACES.J.380307

Keywords:

band stop filter, harmonics suppression, parallel-coupled lines, Wilkinson power divider

Abstract

This paper presents a technique to improve the spurious suppression performance at the second harmonic (2f0) of a Wilkinson power divider. The technique is achieved by the insertion of bandstop filters realizing with parallel-coupled lines with the characteristic impedance of 2√Z0Ω and the electrical length of λ/8 in a conventional structure. The simulated and measured results of the conventional and the proposed divider are compared at 0.9 GHz. The insertion losses (S21, S31) are less than 3.1 dB, while the return losses (S11) are less than 34.6 dB across 100% fractional bandwidth. Moreover, the proposed Wilkinson power divider achieves more than 25.5 dB suppression at 2f0.

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Author Biographies

Ravee Phromloungsri, Department of Computer and Communication Engineering Faculty of Technology Udon Thani Rajabhat University, Udon Thani 41000, Thailand

Ravee Phromloungsri was born in Khon Kaen, Thailand. He received the B.Sc. (Applied Physics in Solid State Electronics) from King Mongkut Institute of Technology, Ladkrabang (KMITL) in 1992, M.Eng. in Electrical Engineering (Telecommunication) from Mahanakorn University of Technology (MUT) in 2000 and he is currently working toward the D. Eng. in Electrical Engineering in MUT. From 1992 to 2009, he joined MUT as a lecturer in the telecommunication engineering department. Currently, he is an assistant professor in the Department of Computer and Communication Engineering at Udon Thani Rajabhat University. His research interests include IoT/Automation system, and RF/Microwave circuits design.

Somchat Sonasang, Department of Electronic Technology Faculty of Industrial Technology Nakhon Phanom University, Nakhon Phanom 48000, Thailand

Somchat Sonasang received the Ph.D. degree in Electrical and Computer Engineering from Mahasarakham University, Maha Sarakham, Thailand, in 2021. He is currently working in the Department of Electronic Technology, Faculty of Industrial Technology, Nakhon Phanom University, Thailand. His current research interests are microwave circuits, electromagnetic material characterization, non-destructive tests, Rabi oscillation and antenna.

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Published

2023-03-31

How to Cite

[1]
R. . Phromloungsri and S. . Sonasang, “Design and Implementation of a Wilkinson Power Divider with Integrated Band Stop Filters Based on Parallel-coupled Lines”, ACES Journal, vol. 38, no. 03, pp. 208–213, Mar. 2023.

Issue

2023: Vol 38 Iss 3

Section

General Submission

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