Design of Wilkinson Power Dividers with SITL Compensated Microstrip Bandpass Filters

作者

  • Ravee Phomloungsri Department of Computer and Communication Engineering, Faculty of Technology, Udon Thani Rajabhat University, Udon Thani 4100, Thailand
  • Somkuan Srisawat Department of Computer and Communication Engineering, Faculty of Technology, Udon Thani Rajabhat University, Udon Thani 4100, Thailand
  • Somchat Sonasang Department of Electronics Technology, Faculty of Industrial Technology, Nakhon Panom University, Nakhom Panom, 48000, Thailand https://orcid.org/0000-0002-3261-4547
  • Mitchai Chongcheawchamnan Department of Electrical Engineering, Prince of Songkla University, Hat Yai, Songkhla 90110, Thailand

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https://doi.org/10.13052/2023.ACES.J.381205

关键词:

Harmonic suppression, parallel-coupled line, step impedance transmission line, Wilkinson power divider

摘要

This paper presents a simple technique for improving performances of a conventional Wilkinson power divider. The technique is achieved by replacing bulky quarter-wave transmission lines with stepped impedance transmission lines (SITL) compensated coupled lines. With the internal function of bandpass filter integrated with the proposed coupled lines, the spurious response at 2nd harmonics frequencies that normally exists in the conventional divider is considerably reduced. Simulated and measured results at 2.1 GHz operating frequency of the proposed and conventional Wilkinson power divider were compared. The proposed divider achieves -3.8 dB insertion loss (S21,S31) and more than 25 dB return loss (S11,S22,S33) across 10% fractional bandwidth. Based on this measurement, the proposed circuit achieves more than 34.5 dB suppression at the 2nd harmonic frequency.

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Ravee Phromloung 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.

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Somkuan Srisawat was born in Nongbua Lamphu, Thailand. He received the B.Eng. (Electronics Engineering) from Udon Thani Rajabhat University, in 2011, M.Eng. in Electrical and Computer Engineering from Mahasarakham University (MSU), in 2019, Thailand. Currently, he is working 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.

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Somchat Sonasang was born in Nongbua Lamphu, Thailand. He received the B.Eng. (Electronics and Telecommunication-Telecommunication) from Rajamangala University of Technology Isan(RMUTI), Nakhon Ratchasima Campus, in 2006, M.Eng. in Electrical Engineering from Khon Kaen University (KKU), in 2009, Ph.D. degree in electrical and computer engineering from Mahasarakham University (MSU), 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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Mitchai Chong (Senior Member, IEEE) was born in Bangkok, Thailand. He received the B.Eng. degree in telecommunication from the King Mongkut’s Institute of Technology Ladkrabang, Bangkok, in 1992, the M.Sc. degree in communication and signal processing from Imperial College London, London, U.K., in 1995, and the Ph.D. degree in electrical engineering from the University of Surrey, Guildford, U.K., in 2001. He joined the Mahanakorn University of Technology, Bangkok, as a Lecturer, in 1992. In 2008, he joined the Faculty of Engineering, Prince of Songkla University, Songkhla, Thailand, as Professor. His current research interests include deep learning, microwave circuit design and microwave techniques for agricultural applications.

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已出版

2023-12-30

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[1]
R. Phomloungsri, S. Srisawat, S. Sonasang, 和 M. Chongcheawchamnan, 《Design of Wilkinson Power Dividers with SITL Compensated Microstrip Bandpass Filters》, ACES Journal, 卷 38, 期 12, 页 958–964, 12月 2023.

期

2023: Vol 38 Iss 12

栏目

General Submission

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