Compact Band-Pass Filter Using Modified Ω-shaped Resonator and Source Load Coupling for Transmission Zero Improvement
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Date
2021-04
Authors
Mishra, Naveen
Chaudhary, Raghvendra Kumar
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Advisor
Referee
Mark
Journal Title
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Volume Title
Publisher
Společnost pro radioelektronické inženýrství
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Abstract
This article investigates a compact band-pass filter using modified Ω-shaped resonator and source load coupling for transmission zero improvement. In this article, source load coupling has been used to improve the insertion loss response and a number of transmission zeros in the upper stop-band, so that the chance of interference from adjacent wireless bands can be reduced. In order to determine the metamaterial characteristics for the designed filter structure dispersion diagram and vectored electric-field with no phase variation has been illustrated. The simulated and measured 3dB fractional bandwidth for the designed filter structure is 26.05% and 26.12% at the center frequency of 2.38 and 2.33 GHz respectively. It offers compactness with an electrical footprint area of 0.245λg × 0.201λg, where λg is the guided wavelength at the center frequency of 2.33 GHz. The presented filter structure seems a potential candidate for different wireless applications such as Bluetooth (2.4-2.48 GHz), WLAN/Wi-Fi (2.4-2.49 GHz) and Wi-MAX (2.5-2.69 GHz).
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Citation
Radioengineering. 2021 vol. 30, č. 1, s. 111-116. ISSN 1210-2512
https://www.radioeng.cz/fulltexts/2021/21_01_0111_0116.pdf
https://www.radioeng.cz/fulltexts/2021/21_01_0111_0116.pdf
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Peer-reviewed
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en