Wideband/Dual-Band Dielectric Filtering Inverted-L Antenna With Reflective and Quasi-Reflectionless Radiation Nulls
A class of dielectric filtering inverted-L antenna with reflective- and quasi-reflectionless-type radiation nulls is proposed to achieve wideband or dual-band operation. To this aim, a dual-function dissipative branch is exploited, which is in-parallel loaded at the feedline of the microstrip-fed di...
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| Format: | Article |
| Language: | English |
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IEEE
2024-01-01
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| Series: | IEEE Open Journal of Antennas and Propagation |
| Subjects: | |
| Online Access: | https://ieeexplore.ieee.org/document/10376452/ |
| _version_ | 1827130969927188480 |
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| author | Wen Zheng Shiyan Wang Yin Li Zai-Cheng Guo Gang Zhang Li Yang Roberto Gomez-Garcia |
| author_facet | Wen Zheng Shiyan Wang Yin Li Zai-Cheng Guo Gang Zhang Li Yang Roberto Gomez-Garcia |
| author_sort | Wen Zheng |
| collection | DOAJ |
| description | A class of dielectric filtering inverted-L antenna with reflective- and quasi-reflectionless-type radiation nulls is proposed to achieve wideband or dual-band operation. To this aim, a dual-function dissipative branch is exploited, which is in-parallel loaded at the feedline of the microstrip-fed dielectric inverted-L antenna. This absorptive branch, which is terminated in a grounded resistor, exhibits a quasi-complementary frequency response with regard to the one of the antenna. In this manner, it can mostly absorb the out-of-band RF-signal power not radiated by the antenna, hence creating quasi-reflectionless-type radiation nulls. Furthermore, the loaded branch can also generate a notch band giving rise to a reflective-type radiation null, which comes determined by the length of the branch and it is independent of the quasi-reflectionless radiation nulls. Thus, by controlling the spectral location of the notch band out of or within the operational frequency band of the dielectric inverted-L antenna, wideband or dual-band operational capabilities can be functionalized into it. For experimental-validation purposes, proof-of-concept prototypes for the two devised wideband and dual-band antenna approaches are designed, manufactured, and characterized. The measured results are in reasonably-close agreement with the simulated ones. The measured fractional impedance bandwidths of the two antenna prototypes are 28.3% (wideband one), 3.1% and 4.2% (dual-band one), respectively. |
| first_indexed | 2024-04-24T18:55:29Z |
| format | Article |
| id | doaj.art-b99b65b47b34408994fb1c478294cf64 |
| institution | Directory Open Access Journal |
| issn | 2637-6431 |
| language | English |
| last_indexed | 2025-03-20T16:24:38Z |
| publishDate | 2024-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Open Journal of Antennas and Propagation |
| spelling | doaj.art-b99b65b47b34408994fb1c478294cf642024-08-30T23:01:28ZengIEEEIEEE Open Journal of Antennas and Propagation2637-64312024-01-015233033910.1109/OJAP.2023.334853310376452Wideband/Dual-Band Dielectric Filtering Inverted-L Antenna With Reflective and Quasi-Reflectionless Radiation NullsWen Zheng0https://orcid.org/0009-0008-0061-7509Shiyan Wang1https://orcid.org/0000-0002-7873-1984Yin Li2https://orcid.org/0009-0007-6081-5067Zai-Cheng Guo3https://orcid.org/0000-0002-1022-656XGang Zhang4https://orcid.org/0000-0003-4305-2567Li Yang5https://orcid.org/0000-0002-1264-4810Roberto Gomez-Garcia6https://orcid.org/0000-0001-9132-6927School of Electrical and Automation Engineering, Nanjing Normal University, Nanjing, ChinaSchool of Electrical and Automation Engineering, Nanjing Normal University, Nanjing, ChinaDepartment of Broadband Communication, Peng Cheng Laboratory, Shenzhen, ChinaSchool of Electrical and Automation Engineering, Nanjing Normal University, Nanjing, ChinaSchool of Electrical and Automation Engineering, Nanjing Normal University, Nanjing, ChinaDepartment of Signal Theory and Communications, Polytechnic School, University of Alcalá, Alcala de Henares, SpainDepartment of Signal Theory and Communications, Polytechnic School, University of Alcalá, Alcala de Henares, SpainA class of dielectric filtering inverted-L antenna with reflective- and quasi-reflectionless-type radiation nulls is proposed to achieve wideband or dual-band operation. To this aim, a dual-function dissipative branch is exploited, which is in-parallel loaded at the feedline of the microstrip-fed dielectric inverted-L antenna. This absorptive branch, which is terminated in a grounded resistor, exhibits a quasi-complementary frequency response with regard to the one of the antenna. In this manner, it can mostly absorb the out-of-band RF-signal power not radiated by the antenna, hence creating quasi-reflectionless-type radiation nulls. Furthermore, the loaded branch can also generate a notch band giving rise to a reflective-type radiation null, which comes determined by the length of the branch and it is independent of the quasi-reflectionless radiation nulls. Thus, by controlling the spectral location of the notch band out of or within the operational frequency band of the dielectric inverted-L antenna, wideband or dual-band operational capabilities can be functionalized into it. For experimental-validation purposes, proof-of-concept prototypes for the two devised wideband and dual-band antenna approaches are designed, manufactured, and characterized. The measured results are in reasonably-close agreement with the simulated ones. The measured fractional impedance bandwidths of the two antenna prototypes are 28.3% (wideband one), 3.1% and 4.2% (dual-band one), respectively.https://ieeexplore.ieee.org/document/10376452/filtering antennadielectric inverted-L antennadual-band antennanotch bandradiation nullwideband antenna |
| spellingShingle | Wen Zheng Shiyan Wang Yin Li Zai-Cheng Guo Gang Zhang Li Yang Roberto Gomez-Garcia Wideband/Dual-Band Dielectric Filtering Inverted-L Antenna With Reflective and Quasi-Reflectionless Radiation Nulls IEEE Open Journal of Antennas and Propagation filtering antenna dielectric inverted-L antenna dual-band antenna notch band radiation null wideband antenna |
| title | Wideband/Dual-Band Dielectric Filtering Inverted-L Antenna With Reflective and Quasi-Reflectionless Radiation Nulls |
| title_full | Wideband/Dual-Band Dielectric Filtering Inverted-L Antenna With Reflective and Quasi-Reflectionless Radiation Nulls |
| title_fullStr | Wideband/Dual-Band Dielectric Filtering Inverted-L Antenna With Reflective and Quasi-Reflectionless Radiation Nulls |
| title_full_unstemmed | Wideband/Dual-Band Dielectric Filtering Inverted-L Antenna With Reflective and Quasi-Reflectionless Radiation Nulls |
| title_short | Wideband/Dual-Band Dielectric Filtering Inverted-L Antenna With Reflective and Quasi-Reflectionless Radiation Nulls |
| title_sort | wideband dual band dielectric filtering inverted l antenna with reflective and quasi reflectionless radiation nulls |
| topic | filtering antenna dielectric inverted-L antenna dual-band antenna notch band radiation null wideband antenna |
| url | https://ieeexplore.ieee.org/document/10376452/ |
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