Designing ultra-small Wilkinson power divider with multi-harmonics suppression

ABSTRACT

This paper presents a miniaturized Wilkinson Power Divider (WPD) with the capability of attenuating unwanted harmonics up to the 19th harmonic. In this study, a low pass filter was embedded as the quarter-wavelength transmission lines of the conventional WPD. To reduce the size of the proposed structure, the high impedance line is meandered. A simple T-shape resonator is added to suppress the high frequency. The even and odd mode analysis were reported as the analytical descriptions. The operational frequency of the presented WPD is 1.95GHz, and S₂₁, S₁₁, S₂₂, and S₂₃ in this frequency are -3.79dB, -15.56dB, -14.15dB, and -10.89dB, respectively. The overall size of implemented WPD is only 8.8 mm × 8.02 mm, and its normalized circuit size equals 0.078 × 0.071. The designed structure has been fabricated and measured on the RT-5880 substrate with a thickness of 20mil. The desired matching between the simulation results and the measurement ones has been evident.${\lambda }_g$${\lambda }_g$

KEYWORDS:

• Miniaturization
• harmonic suppression
• Wilkinson power divider

Data availability

The calculated results during the current study are available from the corresponding author on reasonable request.

Disclosure statement

No potential conflict of interest was reported by the author(s).

Additional information

Notes on contributors

Mohsen Hayati

Mohsen Hayati received the B.E. degree in Electronics and Communication Engineering from Nagarjuna University, Andhra Pradesh, India, in 1985, and the M.E. and Ph.D. degrees in Electronics Engineering from Delhi University, Delhi, India, in 1987 and 1992, respectively. He joined the Electrical Engineering Department, Razi University, Kermanshah, Iran, as an Assistant Professor in 1993. Currently, he is a Professor with the Electrical Engineering Department, Faculty of Engineering, Razi University. He has published more than 250 papers in international, domestic journals, and conferences. His current research interests include microwave and millimeter wave devices and circuits, power amplifiers, low noise amplifier design, analog cmos circuit, application of computational intelligence, artificial neural networks, fuzzy systems, neuro-fuzzy systems, electronic circuit synthesis, modeling and simulations.

Mohammad Amir Sattari

Mohammad Amir Sattari was born in Ilam, Iran, in 1995. He received his B.Sc. and M.Sc. degrees in telecommunication engineering and electronic engineering from Kermanshah University of Technology, Kermanshah, Iran, in 2017 and 2019, respectively. He is currently working toward a Ph.D. degree in electronic engineering at Razi University, Kermanshah, Iran. His research interests include the design and analysis of the passive and active microwave components; and the implementation and application of artificial neural networks.

Sepehr Zarghami

Sepehr Zarghami received the BE in electronics engineering from the Electrical Engineering Department, Kermanshah Branch, Islamic Azad University, Iran in 2013 and M.E. from the Electrical Engineering Department, Razi University, Kermanshah, Iran; in 2016. He is currently a Ph.D. candidate in Electrical Department at Razi University, Kermanshah, since 2017. His research interests include Microwave and millimeter wave devices and circuits, Power amplifier design, Low noise amplifier design, and Analog passive circuits design.

Seyed Maziar Shah-ebrahimi

Seyed Maziar Shah-ebrahimi received the B.Sc. degree in electrical engineering from Azad University Kermanshah branch, Iran, in 2014, and the M.Sc. degree in electronics engineering from Razi University, Kermanshah, Iran, in 2017 where he is currently pursuing the Ph.D. degree with the Electrical Engineering Department. His current research interests include microwave engineering, power amplifier design.