Retrospective Spectrum-Conversion Method Based on Time-Modulated Van Atta Array
Spectrum conversion is one of the important applications in the non-linear electromagnetic (EM) field, which is widely used in antennas, wireless communication, radar imaging, etc. However, controlling spectrum conversion with excellent retrospective characteristics at oblique incidence directions r...
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| Format: | Article |
| Language: | English |
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MDPI AG
2025-04-01
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| Series: | Remote Sensing |
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| Online Access: | https://www.mdpi.com/2072-4292/17/7/1257 |
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| author | Feng Zhao Junjie Wang Jinrong Wang Weihong Hu Dejun Feng Kunpeng Song |
| author_facet | Feng Zhao Junjie Wang Jinrong Wang Weihong Hu Dejun Feng Kunpeng Song |
| author_sort | Feng Zhao |
| collection | DOAJ |
| description | Spectrum conversion is one of the important applications in the non-linear electromagnetic (EM) field, which is widely used in antennas, wireless communication, radar imaging, etc. However, controlling spectrum conversion with excellent retrospective characteristics at oblique incidence directions remains a major issue in microwave systems. In this paper, a time-modulated Van Atta array is proposed to manipulate the spectral distribution of the echo signal. The array prototype experiments are conducted to demonstrate the variation properties of the monostatic radar cross section (RCS) at oblique incidence directions. On this basis, the periodic modulation model of the retrospective signal is established for the time-modulated Van Atta array. Several discrete harmonic components are symmetrically distributed on both sides of the original spectra. The influence of modulation parameters on the generated harmonics is analyzed in detail. The array prototype experiment is carried out, and the variation characteristics of the monostatic RCS in the oblique incidence direction are verified. |
| format | Article |
| id | doaj-art-d4c82ff633794e38bec00ebb877b71f2 |
| institution | DOAJ |
| issn | 2072-4292 |
| language | English |
| publishDate | 2025-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Remote Sensing |
| spelling | doaj-art-d4c82ff633794e38bec00ebb877b71f22025-08-20T03:08:54ZengMDPI AGRemote Sensing2072-42922025-04-01177125710.3390/rs17071257Retrospective Spectrum-Conversion Method Based on Time-Modulated Van Atta ArrayFeng Zhao0Junjie Wang1Jinrong Wang2Weihong Hu3Dejun Feng4Kunpeng Song5State Key Laboratory of Complex Electromagnetic Environment Effects on Electronics and Information System, College of Electronic Science and Technology, National University of Defense Technology, Changsha 410073, ChinaState Key Laboratory of Complex Electromagnetic Environment Effects on Electronics and Information System, College of Electronic Science and Technology, National University of Defense Technology, Changsha 410073, ChinaState Key Laboratory of Complex Electromagnetic Environment Effects on Electronics and Information System, College of Electronic Science and Technology, National University of Defense Technology, Changsha 410073, ChinaState Key Laboratory of Complex Electromagnetic Environment Effects on Electronics and Information System, College of Electronic Science and Technology, National University of Defense Technology, Changsha 410073, ChinaState Key Laboratory of Complex Electromagnetic Environment Effects on Electronics and Information System, College of Electronic Science and Technology, National University of Defense Technology, Changsha 410073, ChinaUnit 31648 of PLA, Nanning 530022, ChinaSpectrum conversion is one of the important applications in the non-linear electromagnetic (EM) field, which is widely used in antennas, wireless communication, radar imaging, etc. However, controlling spectrum conversion with excellent retrospective characteristics at oblique incidence directions remains a major issue in microwave systems. In this paper, a time-modulated Van Atta array is proposed to manipulate the spectral distribution of the echo signal. The array prototype experiments are conducted to demonstrate the variation properties of the monostatic radar cross section (RCS) at oblique incidence directions. On this basis, the periodic modulation model of the retrospective signal is established for the time-modulated Van Atta array. Several discrete harmonic components are symmetrically distributed on both sides of the original spectra. The influence of modulation parameters on the generated harmonics is analyzed in detail. The array prototype experiment is carried out, and the variation characteristics of the monostatic RCS in the oblique incidence direction are verified.https://www.mdpi.com/2072-4292/17/7/1257Van Atta retro-reflective arraymicrostrip patch arraysingle-pole double-throw (SPDT) switch |
| spellingShingle | Feng Zhao Junjie Wang Jinrong Wang Weihong Hu Dejun Feng Kunpeng Song Retrospective Spectrum-Conversion Method Based on Time-Modulated Van Atta Array Remote Sensing Van Atta retro-reflective array microstrip patch array single-pole double-throw (SPDT) switch |
| title | Retrospective Spectrum-Conversion Method Based on Time-Modulated Van Atta Array |
| title_full | Retrospective Spectrum-Conversion Method Based on Time-Modulated Van Atta Array |
| title_fullStr | Retrospective Spectrum-Conversion Method Based on Time-Modulated Van Atta Array |
| title_full_unstemmed | Retrospective Spectrum-Conversion Method Based on Time-Modulated Van Atta Array |
| title_short | Retrospective Spectrum-Conversion Method Based on Time-Modulated Van Atta Array |
| title_sort | retrospective spectrum conversion method based on time modulated van atta array |
| topic | Van Atta retro-reflective array microstrip patch array single-pole double-throw (SPDT) switch |
| url | https://www.mdpi.com/2072-4292/17/7/1257 |
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