Mutual Coupling Suppression of GPR Antennas by Depositing Wideband Meta-Absorber with Resistive Film
The direct wave between the transceiver antenna negatively affects the dynamic range and imaging quality of ground penetrating radar (GPR). Suppressing this direct wave is a vital problem in enhancing the performance of the whole GPR system. In this paper, a Minkowski-fractal metamaterial absorber (...
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MDPI AG
2022-10-01
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| Series: | Materials |
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| Online Access: | https://www.mdpi.com/1996-1944/15/20/7137 |
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| author | Yajun Zhou Minjie Guo Linyan Guo Yi Zhou Changxin Wei |
| author_facet | Yajun Zhou Minjie Guo Linyan Guo Yi Zhou Changxin Wei |
| author_sort | Yajun Zhou |
| collection | DOAJ |
| description | The direct wave between the transceiver antenna negatively affects the dynamic range and imaging quality of ground penetrating radar (GPR). Suppressing this direct wave is a vital problem in enhancing the performance of the whole GPR system. In this paper, a Minkowski-fractal metamaterial absorber (MMA) with the resistive film is proposed in the GPR transceiver antenna to reduce the mutual coupling. The simulated and measured results indicate that this MMA has an effective wideband absorption in 1.0-8.0 GHz. And the thickness of MMA is only 0.007 <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msub><mi>λ</mi><mn>0</mn></msub></semantics></math></inline-formula> (with respect to 2.0 GHz). This wideband MMA can reduce the mutual coupling of the proposed GPR transceiver antenna by an average of 10 dB. And it also mitigates the time-domain ringing problem of the transmit antenna. Real-world experiments demonstrate that the direct wave from the transmitting antenna can be reduced and the target echo arriving at the receiving antenna can be increased if this MMA is placed in the proposed transceiver antenna. This resistive film-based MMA offers great promise in realizing low-cost, compact, and lightweight GPR antennas, which can also be extended to high-frequency microwave imaging. |
| first_indexed | 2024-03-09T19:54:17Z |
| format | Article |
| id | doaj.art-9822abc507944e9787557632984f9caf |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-09T19:54:17Z |
| publishDate | 2022-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-9822abc507944e9787557632984f9caf2023-11-24T01:02:51ZengMDPI AGMaterials1996-19442022-10-011520713710.3390/ma15207137Mutual Coupling Suppression of GPR Antennas by Depositing Wideband Meta-Absorber with Resistive FilmYajun Zhou0Minjie Guo1Linyan Guo2Yi Zhou3Changxin Wei4School of Geophysics and Information Technology, China University of Geosciences, Beijing 100083, ChinaCollege of Physics and Electric Engineering, Guangxi Normal University for Nationalities, Chongzuo 532200, ChinaSchool of Geophysics and Information Technology, China University of Geosciences, Beijing 100083, ChinaSchool of Materials Science and Technology, China University of Geosciences, Beijing 100083, ChinaSchool of Materials Science and Technology, China University of Geosciences, Beijing 100083, ChinaThe direct wave between the transceiver antenna negatively affects the dynamic range and imaging quality of ground penetrating radar (GPR). Suppressing this direct wave is a vital problem in enhancing the performance of the whole GPR system. In this paper, a Minkowski-fractal metamaterial absorber (MMA) with the resistive film is proposed in the GPR transceiver antenna to reduce the mutual coupling. The simulated and measured results indicate that this MMA has an effective wideband absorption in 1.0-8.0 GHz. And the thickness of MMA is only 0.007 <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msub><mi>λ</mi><mn>0</mn></msub></semantics></math></inline-formula> (with respect to 2.0 GHz). This wideband MMA can reduce the mutual coupling of the proposed GPR transceiver antenna by an average of 10 dB. And it also mitigates the time-domain ringing problem of the transmit antenna. Real-world experiments demonstrate that the direct wave from the transmitting antenna can be reduced and the target echo arriving at the receiving antenna can be increased if this MMA is placed in the proposed transceiver antenna. This resistive film-based MMA offers great promise in realizing low-cost, compact, and lightweight GPR antennas, which can also be extended to high-frequency microwave imaging.https://www.mdpi.com/1996-1944/15/20/7137mutual coupling suppressionwideband absorberresistive filmMinkowski fractalGPR antenna |
| spellingShingle | Yajun Zhou Minjie Guo Linyan Guo Yi Zhou Changxin Wei Mutual Coupling Suppression of GPR Antennas by Depositing Wideband Meta-Absorber with Resistive Film Materials mutual coupling suppression wideband absorber resistive film Minkowski fractal GPR antenna |
| title | Mutual Coupling Suppression of GPR Antennas by Depositing Wideband Meta-Absorber with Resistive Film |
| title_full | Mutual Coupling Suppression of GPR Antennas by Depositing Wideband Meta-Absorber with Resistive Film |
| title_fullStr | Mutual Coupling Suppression of GPR Antennas by Depositing Wideband Meta-Absorber with Resistive Film |
| title_full_unstemmed | Mutual Coupling Suppression of GPR Antennas by Depositing Wideband Meta-Absorber with Resistive Film |
| title_short | Mutual Coupling Suppression of GPR Antennas by Depositing Wideband Meta-Absorber with Resistive Film |
| title_sort | mutual coupling suppression of gpr antennas by depositing wideband meta absorber with resistive film |
| topic | mutual coupling suppression wideband absorber resistive film Minkowski fractal GPR antenna |
| url | https://www.mdpi.com/1996-1944/15/20/7137 |
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