Dual-Beam Steerable TMAs Combining AM and PM Switched Time-Modulation
Wireless sensor networks (WSN) are increasingly requiring directional antennas that not only provide higher capacity, security, transmission range or robustness against interference, but also contribute with smart antenna capabilities such as adaptive beamforming or multi beam radiation patterns. St...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-02-01
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| Series: | Sensors |
| Subjects: | |
| Online Access: | https://www.mdpi.com/1424-8220/22/4/1399 |
| _version_ | 1797476728794251264 |
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| author | Roberto Maneiro-Catoira Julio Brégains José A. García-Naya Luis Castedo |
| author_facet | Roberto Maneiro-Catoira Julio Brégains José A. García-Naya Luis Castedo |
| author_sort | Roberto Maneiro-Catoira |
| collection | DOAJ |
| description | Wireless sensor networks (WSN) are increasingly requiring directional antennas that not only provide higher capacity, security, transmission range or robustness against interference, but also contribute with smart antenna capabilities such as adaptive beamforming or multi beam radiation patterns. Standard phased arrays provide these features, but employing feeding networks based on digitally controlled variable phase shifters (VPSs) which have the disadvantage of high cost and limited angular resolution. Instead, time-modulated arrays (TMAs) use switched feeding networks governed by digital periodic sequences which allow harmonic patterns to be radiated and endows (TMAs) with attractive multifunctional capabilities. In this paper, we analyze and properly combine (TMA) switched feeding networks capable of time-modulating an antenna array with discretized amplitude modulation (AM) and phase modulation (PM) waveforms. The advantages of the proposed innovative dual-beam (TMA) with respect to the competing architectures are, on the one hand, its power efficiency and beamsteering (BS) phase sensitivity and, on the other, its hardware simplicity, which allows for an excellent relative cost advantage. |
| first_indexed | 2024-03-09T21:06:46Z |
| format | Article |
| id | doaj.art-0a40922c0df945858c92a4e42785cff8 |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-03-09T21:06:46Z |
| publishDate | 2022-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-0a40922c0df945858c92a4e42785cff82023-11-23T21:58:53ZengMDPI AGSensors1424-82202022-02-01224139910.3390/s22041399Dual-Beam Steerable TMAs Combining AM and PM Switched Time-ModulationRoberto Maneiro-Catoira0Julio Brégains1José A. García-Naya2Luis Castedo3CITIC Research Center, Department of Computer Engineering, University of A Coruña, Campus de Elviña, 15071 A Coruña, SpainCITIC Research Center, Department of Computer Engineering, University of A Coruña, Campus de Elviña, 15071 A Coruña, SpainCITIC Research Center, Department of Computer Engineering, University of A Coruña, Campus de Elviña, 15071 A Coruña, SpainCITIC Research Center, Department of Computer Engineering, University of A Coruña, Campus de Elviña, 15071 A Coruña, SpainWireless sensor networks (WSN) are increasingly requiring directional antennas that not only provide higher capacity, security, transmission range or robustness against interference, but also contribute with smart antenna capabilities such as adaptive beamforming or multi beam radiation patterns. Standard phased arrays provide these features, but employing feeding networks based on digitally controlled variable phase shifters (VPSs) which have the disadvantage of high cost and limited angular resolution. Instead, time-modulated arrays (TMAs) use switched feeding networks governed by digital periodic sequences which allow harmonic patterns to be radiated and endows (TMAs) with attractive multifunctional capabilities. In this paper, we analyze and properly combine (TMA) switched feeding networks capable of time-modulating an antenna array with discretized amplitude modulation (AM) and phase modulation (PM) waveforms. The advantages of the proposed innovative dual-beam (TMA) with respect to the competing architectures are, on the one hand, its power efficiency and beamsteering (BS) phase sensitivity and, on the other, its hardware simplicity, which allows for an excellent relative cost advantage.https://www.mdpi.com/1424-8220/22/4/1399time-modulated arrayswireless sensor networksbeam steeringmultibeam |
| spellingShingle | Roberto Maneiro-Catoira Julio Brégains José A. García-Naya Luis Castedo Dual-Beam Steerable TMAs Combining AM and PM Switched Time-Modulation Sensors time-modulated arrays wireless sensor networks beam steering multibeam |
| title | Dual-Beam Steerable TMAs Combining AM and PM Switched Time-Modulation |
| title_full | Dual-Beam Steerable TMAs Combining AM and PM Switched Time-Modulation |
| title_fullStr | Dual-Beam Steerable TMAs Combining AM and PM Switched Time-Modulation |
| title_full_unstemmed | Dual-Beam Steerable TMAs Combining AM and PM Switched Time-Modulation |
| title_short | Dual-Beam Steerable TMAs Combining AM and PM Switched Time-Modulation |
| title_sort | dual beam steerable tmas combining am and pm switched time modulation |
| topic | time-modulated arrays wireless sensor networks beam steering multibeam |
| url | https://www.mdpi.com/1424-8220/22/4/1399 |
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