Unbalanced Two-Way Filtering Power Splitter for Wireless Communication Systems

Augustine O Nwajana; Gerald Ijemaru; Kenneth Ang; Jasmine Kah Phooi Seng; Kenneth S K Yeo

doi:10.3390/electronics10050617

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Unbalanced Two-Way Filtering Power Splitter for Wireless Communication Systems

Journal article

Open access

Peer reviewed

Unbalanced Two-Way Filtering Power Splitter for Wireless Communication Systems

Augustine O Nwajana, Gerald Ijemaru, Kenneth Ang, Jasmine Kah Phooi Seng and Kenneth S K Yeo

Electronics, Vol.10(5), pp.1-9

2021

DOI: https://doi.org/10.3390/electronics10050617

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Abstract

Wireless Communications

Electrical and Electronic Engineering not elsewhere classified

unequal power divider/combiner

bandpass/channel filter

3 dB power splitter

hairpin resonator

microstrip

square open-loop resonator

A compact unbalanced two-way filtering power splitter with an integrated Chebyshev filtering function is presented. The design is purely based on formulations, thereby eliminating the constant need for developing complex optimization algorithms and tuning, to deliver the desired amount of power at each of the two output ports. To achieve miniaturization, a common square open-loop resonator (SOLR) is used to distribute energy between the two integrated channel filters. In addition to distributing energy, the common resonator also contributes one pole to each integrated channel filter, hence, reducing the number of individual resonating elements used in achieving the integrated filtering power splitter (FPS). To demonstrate the proposed design technique, a prototype FPS centered at 2.6 GHz with a 3 dB fractional bandwidth of 3% is designed and simulated. The circuit model and layout results show good performances of high selectivity, less than 1.7 dB insertion loss, and better than 16 dB in-band return loss. The common microstrip SOLR and the microstrip hair-pin resonators used in implementing the proposed integrated FPS ensures that an overall compact size of 0.34 λg × 0.11 λg was achieved, where λg is the guided-wavelength of the 50 Ω microstrip line at the fundamental resonant frequency of the FPS passband.

Details

Title: Unbalanced Two-Way Filtering Power Splitter for Wireless Communication Systems
Authors: Augustine O Nwajana (Author) - University of Greenwich
Gerald Ijemaru (Author) - University of the Sunshine Coast, Queensland, School of Science, Technology and Engineering
Kenneth Ang (Author) - University of the Sunshine Coast, Queensland, School of Science, Technology and Engineering
Jasmine Kah Phooi Seng (Author) - UNSW Australia
Kenneth S K Yeo (Author) - Universiti Teknologi Brunei
Publication details: Electronics, Vol.10(5), pp.1-9
Publisher: MDPI AG
Date published: 2021
DOI: 10.3390/electronics10050617
ISSN: 2079-9292
Copyright note: Copyright: © 2021 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
Organisation Unit: University of the Sunshine Coast, Queensland; School of Science, Technology and Engineering; Engage Research Lab
Language: English
Record Identifier: 99544507802621
Output Type: Journal article

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Collaboration types: Domestic collaboration; International collaboration
Web Of Science research areas: Computer Science, Information Systems; Engineering, Electrical & Electronic; Physics, Applied