Radiation Enhancement of an Ultrawideband Unidirectional Folded Bowtie Antenna for GPR Applications
An arc-shaped distributed multilayer capacitive loading structure combined with resistive loading is presented in this paper to enhance the radiation performance of folded bowtie antenna (FBA). The radiation efficiency of the loaded bowtie antenna (BA) is improved, and the low-frequency bandwidth is...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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IEEE
2020-01-01
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| Series: | IEEE Access |
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| Online Access: | https://ieeexplore.ieee.org/document/9214459/ |
| _version_ | 1818934341176131584 |
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| author | Guangyao Yang Shengbo Ye Yicai Ji Xiaojuan Zhang Guangyou Fang |
| author_facet | Guangyao Yang Shengbo Ye Yicai Ji Xiaojuan Zhang Guangyou Fang |
| author_sort | Guangyao Yang |
| collection | DOAJ |
| description | An arc-shaped distributed multilayer capacitive loading structure combined with resistive loading is presented in this paper to enhance the radiation performance of folded bowtie antenna (FBA). The radiation efficiency of the loaded bowtie antenna (BA) is improved, and the low-frequency bandwidth is broadened by the bent loop circuits. Additionally, a novel technique of cavity groove is proposed to design the reflector. The optimized cavity tightly coupling with the radiation part overcomes the shortcomings of conventional cavity-backed BAs. The improved ultra-wideband (UWB) FBA with low profile is then designed and fabricated. The basic geometry of the proposed antenna is combined by a novel acorn-shaped bent bowtie patch and a hollowed stepped back cavity. The simulated -10 dB impedance bandwidth of the proposed antenna is over 100 MHz-1100 MHz while the measured operating bandwidth is 250 MHz-850 MHz. This BA of folded type obtains a high realized gain of 4 dBi at 850 MHz and a narrow pattern over the whole band. Time-domain measurements and field tests for practical ground-penetrating radar (GPR) applications have been carried out and the results demonstrate the advanced performance. |
| first_indexed | 2024-12-20T05:02:44Z |
| format | Article |
| id | doaj.art-0b46b6bc1b864199837fba5d16e97d9a |
| institution | Directory Open Access Journal |
| issn | 2169-3536 |
| language | English |
| last_indexed | 2024-12-20T05:02:44Z |
| publishDate | 2020-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Access |
| spelling | doaj.art-0b46b6bc1b864199837fba5d16e97d9a2022-12-21T19:52:29ZengIEEEIEEE Access2169-35362020-01-01818221818222810.1109/ACCESS.2020.30290509214459Radiation Enhancement of an Ultrawideband Unidirectional Folded Bowtie Antenna for GPR ApplicationsGuangyao Yang0https://orcid.org/0000-0001-9644-1502Shengbo Ye1Yicai Ji2Xiaojuan Zhang3Guangyou Fang4Key Laboratory of Electromagnetic Radiation and Sensing Technology, Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing, ChinaKey Laboratory of Electromagnetic Radiation and Sensing Technology, Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing, ChinaKey Laboratory of Electromagnetic Radiation and Sensing Technology, Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing, ChinaKey Laboratory of Electromagnetic Radiation and Sensing Technology, Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing, ChinaKey Laboratory of Electromagnetic Radiation and Sensing Technology, Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing, ChinaAn arc-shaped distributed multilayer capacitive loading structure combined with resistive loading is presented in this paper to enhance the radiation performance of folded bowtie antenna (FBA). The radiation efficiency of the loaded bowtie antenna (BA) is improved, and the low-frequency bandwidth is broadened by the bent loop circuits. Additionally, a novel technique of cavity groove is proposed to design the reflector. The optimized cavity tightly coupling with the radiation part overcomes the shortcomings of conventional cavity-backed BAs. The improved ultra-wideband (UWB) FBA with low profile is then designed and fabricated. The basic geometry of the proposed antenna is combined by a novel acorn-shaped bent bowtie patch and a hollowed stepped back cavity. The simulated -10 dB impedance bandwidth of the proposed antenna is over 100 MHz-1100 MHz while the measured operating bandwidth is 250 MHz-850 MHz. This BA of folded type obtains a high realized gain of 4 dBi at 850 MHz and a narrow pattern over the whole band. Time-domain measurements and field tests for practical ground-penetrating radar (GPR) applications have been carried out and the results demonstrate the advanced performance.https://ieeexplore.ieee.org/document/9214459/Ultra-wideband (UWB)ground-penetrating radar (GPR)P-bandminiaturized antennafolded bowtie antennaRC-loading |
| spellingShingle | Guangyao Yang Shengbo Ye Yicai Ji Xiaojuan Zhang Guangyou Fang Radiation Enhancement of an Ultrawideband Unidirectional Folded Bowtie Antenna for GPR Applications IEEE Access Ultra-wideband (UWB) ground-penetrating radar (GPR) P-band miniaturized antenna folded bowtie antenna RC-loading |
| title | Radiation Enhancement of an Ultrawideband Unidirectional Folded Bowtie Antenna for GPR Applications |
| title_full | Radiation Enhancement of an Ultrawideband Unidirectional Folded Bowtie Antenna for GPR Applications |
| title_fullStr | Radiation Enhancement of an Ultrawideband Unidirectional Folded Bowtie Antenna for GPR Applications |
| title_full_unstemmed | Radiation Enhancement of an Ultrawideband Unidirectional Folded Bowtie Antenna for GPR Applications |
| title_short | Radiation Enhancement of an Ultrawideband Unidirectional Folded Bowtie Antenna for GPR Applications |
| title_sort | radiation enhancement of an ultrawideband unidirectional folded bowtie antenna for gpr applications |
| topic | Ultra-wideband (UWB) ground-penetrating radar (GPR) P-band miniaturized antenna folded bowtie antenna RC-loading |
| url | https://ieeexplore.ieee.org/document/9214459/ |
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