Antenna Design for Ultra-Wideband System Using a Fractal H-Shaped Structure for Enhanced Filtering and Narrowband Operation
DOI:
https://doi.org/10.29194/NJES.28040515Keywords:
Low-Pass Filter, Passive Filtering, Ultra-WidebandAbstract
In this work, for ultra-wideband (UWB) applications, a passive filter antenna with edge chamfering is investigated in this paper. The performance of an optimized UWB antenna design that achieves an advanced fractional impedance bandwidth of 102% is confirmed by simulation and experimentation. The performance of the antenna is improved by integrating a lowpass filter (LPF) into the fed line, which suppresses high-frequency radiation with a central frequency of 3.5 GHz (WiMAX), the UWB antenna has been transformed into a narrowband antenna, offering a 43.7% fractional bandwidth that spans the frequency range from 2.7 GHz to 3.9 GHz. A stepped impedance transmission line and an extended fractal H-shaped structure integrated in the microstrip feedline make up the filtering network. Using CST Microwave Studio (CST MWS), key performance parameters such as the radiation patterns, efficiency, gain, and reflection coefficient (S11) were examined. In its prototype, the antenna reduces its size by 5% and is made on a FR4 substrate with a permittivity coefficient of 4.3 and a loss tangent of 0.02. A maximum gain of 1.7 dBi and a peak efficiency of 78% at the center frequency were verified experimentally. The center frequency was verified experimentally. The tiny antenna, which measures 0.30λ₀ × 0.37λ₀ × 0.008λ₀, performs well and is appropriate for UWB applications. The design makes a significant addition to the realm of UWB technology by incorporating elements that improve its ability to adapt.
Downloads
References
C. A. Balanis, Antenna Theory: Analysis and Design, 4th ed., Wiley, 2016.
A. Rezaul and T. Mohammad, "A compact filtering UWB antenna with enhanced band-notched characteristics," IEEE Trans. Antennas Propag., vol. 67, no. 3, pp. 1458-1467, 2019.
Q. Meijun, L. Mingxing, L. Xiaoyan, and W. Wei, "A novel filtering antenna based on an embedded resonator for improved out-of-band rejection," Prog. Electromagn. Res. Lett., vol. 80, pp. 33-40, 2018.
FCC, "First Report and Order 02-48," Federal Communications Commission, Washington, DC, USA, Apr. 2002.
Z. Yingqi, Y. Wanchen, L. Xiaoyan, and W. Wei, "Wideband antenna with integrated filtering structure for out-of-band suppression," IEEE Antennas Wireless Propag. Lett., vol. 18, no. 4, pp. 785-789, 2020.
X. Chen, F. Zhao, Y. Wanchen, and Z. Yingqi, "A compact filtering antenna with flat gain response within the passband," IEEE Antennas Propag., vol. 5, no. 12, 2019. https://doi.org/10.1109/LAWP.2013.2271972 DOI: https://doi.org/10.1109/LAWP.2013.2271972
K. Gangwar, M. Alam, S. Kumar, and A. Kumar, "Filtering antennas: A technical review," Int. J. RF Microw. Comput.-Aided Eng., vol. 31, no. 10, e22797, 2021. https://doi.org/10.1002/mmce.22797 DOI: https://doi.org/10.1002/mmce.22797
C. Mao, Y. Zhang, Y. Wanchen, and Z. Yingqi, "Filtering antennas: Design methods and recent developments," IEEE Microw. Mag., vol. 22, no. 11, pp. 52-63, 2021. https://doi.org/10.1109/MMM.2021.3102199 DOI: https://doi.org/10.1109/MMM.2021.3102199
H. Mardani, C. Ghobadi, J. Nourinia, and M. Majidzadeh, "A simple compact monopole antenna with variable single- and double-filtering function for UWB applications," IEEE Antennas Wireless Propag. Lett., vol. 9, pp. 1076-1079, 2014. https://doi.org/10.1109/LAWP.2010.2091391 DOI: https://doi.org/10.1109/LAWP.2010.2091391
J. Ren, Z. Xiong, Y. Wanchen, and Z. Yingqi, "A compact single-layer filtering patch antenna with wide harmonic suppression and enhanced bandwidth," AEU-Int. J. Electron. Commun., vol. 145, p. 154083, 2022. https://doi.org/10.1016/j.aeue.2021.154083 DOI: https://doi.org/10.1016/j.aeue.2021.154083
D. Tang, Y. Chen, Y. Wanchen, and Z. Yingqi, "Compact, wideband, planar filtenna with reconfigurable tripolarization diversity," IEEE Trans. Antennas Propag., vol. 67, no. 8, pp. 5689-5694, 2019. https://doi.org/10.1109/TAP.2019.2920298 DOI: https://doi.org/10.1109/TAP.2019.2920298
J. Deng, C. Tan, Y. Wanchen, and Z. Yingqi, "A compact dual-band filtering antenna for wireless local area network applications," Int. J. RF Microw. Comput.-Aided Eng., vol. 29, no. 9, e21822, 2019. https://doi.org/10.1002/mmce.21822 DOI: https://doi.org/10.1002/mmce.21822
M. Tang, Y. Chen, Y. Wanchen, and Z. Yingqi, "Experimentally validated, planar, wideband, electrically small, monopole filtennas based on capacitively loaded loop resonators," IEEE Trans. Antennas Propag., vol. 64, no. 8, pp. 3353-3360, 2016. https://doi.org/10.1109/TAP.2016.2560918 DOI: https://doi.org/10.1109/TAP.2016.2576499
P. Shome, T. Khan, S. Kumar, and A. Kumar, "Compact UWB-to-C band reconfigurable filtenna based on elliptical monopole antenna integrated with bandpass filter for cognitive radio systems," IET Microw. Antennas Propag., vol. 14, no. 10, pp. 1079-1088, 2020. https://doi.org/10.1049/iet-map.2019.0819 DOI: https://doi.org/10.1049/iet-map.2019.0819
A. Sahoo, D. Gupta, S. Kumar, and A. Kumar, "Highly selective integrated filter antenna for UWB application," Microw. Opt. Technol. Lett., vol. 59, no. 5, pp. 1032-1037, 2017. https://doi.org/10.1002/mop.30444 DOI: https://doi.org/10.1002/mop.30449
B. Ramakrishnan and V. Sivashanmugham, "Chamfered edge filtering ultra-wideband antenna integrated with H-unit cell-loaded feed line for improved out-of-band rejection," Int. J. Microw. Wireless Technol., 2023. https://doi.org/10.1017/S1759078723000636 DOI: https://doi.org/10.1017/S1759078723000636
D. Agrawal and J. Jadhav, "Filtering antennas: Synthesis and design," Int. Res. J. Eng. Technol. (IRJET), vol. 3, p. 6, 2016.
Z. Ouadi, J. Amadid, M. Elhassouni, and A. El Bouzidi, "Compact microstrip filtenna designed for wireless local area network applications," in Proc. Int. Conf. Decision Aid Sci. Appl. (DASA), pp. 1593-1597, IEEE, 2022. https://doi.org/10.1109/DASA54658.2022.9765156 DOI: https://doi.org/10.1109/DASA54658.2022.9765235
Y. Yasir, M. K. Alkhafaji, A. H. Al-Khafaji, and H. A. Al-Raweshidy, "A new and compact wide-band microstrip filter-antenna design for 2.4 GHz ISM band and 4G applications," Electronics, vol. 9, no. 7, p. 1084, 2020. https://doi.org/10.3390/electronics9071084 DOI: https://doi.org/10.3390/electronics9071084
J. Jinn, S. Liao, Y. Wanchen, and Z. Yingqi, "Design of filtering-radiating patch antennas with tunable radiation nulls for high selectivity," IEEE Trans. Antennas Propag., vol. 66, no. 4, pp. 2125-2130, 2018. https://doi.org/10.1109/TAP.2018.2804661 DOI: https://doi.org/10.1109/TAP.2018.2804661
D. Chen, H. Zhang, Y. Wanchen, and Z. Yingqi, "A novel printed monopole antenna with stepped impedance hairpin resonator loading," IEEE Access, vol. 8, pp. 96975-96980, 2020. https://doi.org/10.1109/ACCESS.2020.2996623 DOI: https://doi.org/10.1109/ACCESS.2020.2996623
W. Wang, N. Ran, Y. Wanchen, and Z. Yingqi, "A novel differential filtering patch antenna with high selectivity," Int. J. RF Microw. Comput.-Aided Eng., vol. 29, no. 10, e21880, 2019. https://doi.org/10.1002/mmce.21880 DOI: https://doi.org/10.1002/mmce.21880
Downloads
Published
Issue
Section
License
Copyright (c) 2025 Noor K. Mohsin, Dhirgham K. Naji
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.
The authors retain the copyright of their manuscript by submitting the work to this journal, and all open access articles are distributed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International (CC-BY-NC 4.0), which permits use for any non-commercial purpose, distribution, and reproduction in any medium, provided that the original work is properly cited.
How to Cite
