{"title":"通过频率扫描或在固定频率下放置电容器对漏波 CRLH-TL 超材料天线进行波束扫描","authors":"","doi":"10.1016/j.aeue.2024.155431","DOIUrl":null,"url":null,"abstract":"<div><p>Composite right/left-handed transmission line leakywave metamaterial antenna with ability of space scan by changing frequency and at a fixed frequency with lumped element is designed in this study. Considering the ability to rotate antenna beam by changing the frequency of the leakywave antenna, the rotation of the desired antenna pattern was evaluated by changing the frequency. The introduced antenna can scan a wide spatial area from <span><math><mrow><msup><mrow><mo>-</mo><mn>15</mn></mrow><mo>°</mo></msup></mrow></math></span> to <span><math><mrow><msup><mrow><mo>+</mo><mn>42</mn></mrow><mo>°</mo></msup></mrow></math></span> by changing the frequency in the 2.5 GHz bandwidth (from 9 to 11.5 GHz) without a stop band and with maximum gain of 15 dB. In the second part, by placement three Lumped elements (capacitors) in each unit cell of mentioned CRLH-TL leakywave antenna that has the ability to scan the space in several fixed frequencies (9.6–10-10.4–11 GHz) has been designed. In this case, the antenna can scan from <span><math><mrow><msup><mrow><mo>-</mo><mn>5</mn></mrow><mo>°</mo></msup></mrow></math></span> to <span><math><mrow><msup><mrow><mo>+</mo><mn>12</mn></mrow><mo>°</mo></msup></mrow></math></span> at 9.6 GHz and from <span><math><mrow><msup><mrow><mo>+</mo><mn>15</mn></mrow><mo>°</mo></msup></mrow></math></span> to <span><math><mrow><msup><mrow><mo>+</mo><mn>46</mn></mrow><mo>°</mo></msup></mrow></math></span> at 11 GHz with an average gain of 11 dB. For wider scanning in negative and positive angles, it is suggested to use a double-port switch to feed from both inputs of the CRLH-TL leakywave antenna to increase the overall space scanning angle.</p></div>","PeriodicalId":50844,"journal":{"name":"Aeu-International Journal of Electronics and Communications","volume":null,"pages":null},"PeriodicalIF":3.0000,"publicationDate":"2024-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Beam scanning leaky wave CRLH-TL metamaterial antenna by frequency sweep or at fixed frequency with capacitor placement\",\"authors\":\"\",\"doi\":\"10.1016/j.aeue.2024.155431\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>Composite right/left-handed transmission line leakywave metamaterial antenna with ability of space scan by changing frequency and at a fixed frequency with lumped element is designed in this study. Considering the ability to rotate antenna beam by changing the frequency of the leakywave antenna, the rotation of the desired antenna pattern was evaluated by changing the frequency. The introduced antenna can scan a wide spatial area from <span><math><mrow><msup><mrow><mo>-</mo><mn>15</mn></mrow><mo>°</mo></msup></mrow></math></span> to <span><math><mrow><msup><mrow><mo>+</mo><mn>42</mn></mrow><mo>°</mo></msup></mrow></math></span> by changing the frequency in the 2.5 GHz bandwidth (from 9 to 11.5 GHz) without a stop band and with maximum gain of 15 dB. In the second part, by placement three Lumped elements (capacitors) in each unit cell of mentioned CRLH-TL leakywave antenna that has the ability to scan the space in several fixed frequencies (9.6–10-10.4–11 GHz) has been designed. In this case, the antenna can scan from <span><math><mrow><msup><mrow><mo>-</mo><mn>5</mn></mrow><mo>°</mo></msup></mrow></math></span> to <span><math><mrow><msup><mrow><mo>+</mo><mn>12</mn></mrow><mo>°</mo></msup></mrow></math></span> at 9.6 GHz and from <span><math><mrow><msup><mrow><mo>+</mo><mn>15</mn></mrow><mo>°</mo></msup></mrow></math></span> to <span><math><mrow><msup><mrow><mo>+</mo><mn>46</mn></mrow><mo>°</mo></msup></mrow></math></span> at 11 GHz with an average gain of 11 dB. For wider scanning in negative and positive angles, it is suggested to use a double-port switch to feed from both inputs of the CRLH-TL leakywave antenna to increase the overall space scanning angle.</p></div>\",\"PeriodicalId\":50844,\"journal\":{\"name\":\"Aeu-International Journal of Electronics and Communications\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":3.0000,\"publicationDate\":\"2024-07-18\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Aeu-International Journal of Electronics and Communications\",\"FirstCategoryId\":\"94\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S1434841124003170\",\"RegionNum\":3,\"RegionCategory\":\"计算机科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"ENGINEERING, ELECTRICAL & ELECTRONIC\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Aeu-International Journal of Electronics and Communications","FirstCategoryId":"94","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1434841124003170","RegionNum":3,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ENGINEERING, ELECTRICAL & ELECTRONIC","Score":null,"Total":0}
Beam scanning leaky wave CRLH-TL metamaterial antenna by frequency sweep or at fixed frequency with capacitor placement
Composite right/left-handed transmission line leakywave metamaterial antenna with ability of space scan by changing frequency and at a fixed frequency with lumped element is designed in this study. Considering the ability to rotate antenna beam by changing the frequency of the leakywave antenna, the rotation of the desired antenna pattern was evaluated by changing the frequency. The introduced antenna can scan a wide spatial area from to by changing the frequency in the 2.5 GHz bandwidth (from 9 to 11.5 GHz) without a stop band and with maximum gain of 15 dB. In the second part, by placement three Lumped elements (capacitors) in each unit cell of mentioned CRLH-TL leakywave antenna that has the ability to scan the space in several fixed frequencies (9.6–10-10.4–11 GHz) has been designed. In this case, the antenna can scan from to at 9.6 GHz and from to at 11 GHz with an average gain of 11 dB. For wider scanning in negative and positive angles, it is suggested to use a double-port switch to feed from both inputs of the CRLH-TL leakywave antenna to increase the overall space scanning angle.
期刊介绍:
AEÜ is an international scientific journal which publishes both original works and invited tutorials. The journal''s scope covers all aspects of theory and design of circuits, systems and devices for electronics, signal processing, and communication, including:
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