Amir Jafargholi;Mahmood Safaei;Romain Fleury;Rahim Tafazolli
{"title":"采用超材料启发结构的低矮型 ESPAR","authors":"Amir Jafargholi;Mahmood Safaei;Romain Fleury;Rahim Tafazolli","doi":"10.1109/OJAP.2024.3426608","DOIUrl":null,"url":null,"abstract":"This paper addresses the 3D nature of traditional Electronically Steerable Parasitic Array Radiators (ESPARs). Additionally, the required distance between the main radiator and the parasitic elements usually affects the antenna’s electrical size and the frequency bandwidth. To overcome these issues, the cylindrical parasitic elements in conventional ESPARs are replaced with Metamaterial-inspired structures that mimic artificial magnetic conductors (AMC). The AMC is realized by a capacitively loaded loop (CLL). PIN diodes electrically control the CLL’s behavior while radially loading a printed loop antenna. Switching ON/OFF the diodes changes the direction of the main lobe, resulting in a compact, single-layer, low-profile, and cost-effective structure. By replacing the PIN diodes with varactors, a dual-band and frequency-reconfigurable ESPAR are designed and implemented, which is not possible in traditional ESPAR structures.","PeriodicalId":34267,"journal":{"name":"IEEE Open Journal of Antennas and Propagation","volume":"5 6","pages":"1612-1622"},"PeriodicalIF":3.5000,"publicationDate":"2024-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10594769","citationCount":"0","resultStr":"{\"title\":\"Low-Profile ESPAR Using Metamaterial-Inspired Structure\",\"authors\":\"Amir Jafargholi;Mahmood Safaei;Romain Fleury;Rahim Tafazolli\",\"doi\":\"10.1109/OJAP.2024.3426608\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"This paper addresses the 3D nature of traditional Electronically Steerable Parasitic Array Radiators (ESPARs). Additionally, the required distance between the main radiator and the parasitic elements usually affects the antenna’s electrical size and the frequency bandwidth. To overcome these issues, the cylindrical parasitic elements in conventional ESPARs are replaced with Metamaterial-inspired structures that mimic artificial magnetic conductors (AMC). The AMC is realized by a capacitively loaded loop (CLL). PIN diodes electrically control the CLL’s behavior while radially loading a printed loop antenna. Switching ON/OFF the diodes changes the direction of the main lobe, resulting in a compact, single-layer, low-profile, and cost-effective structure. By replacing the PIN diodes with varactors, a dual-band and frequency-reconfigurable ESPAR are designed and implemented, which is not possible in traditional ESPAR structures.\",\"PeriodicalId\":34267,\"journal\":{\"name\":\"IEEE Open Journal of Antennas and Propagation\",\"volume\":\"5 6\",\"pages\":\"1612-1622\"},\"PeriodicalIF\":3.5000,\"publicationDate\":\"2024-07-10\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10594769\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"IEEE Open Journal of Antennas and Propagation\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://ieeexplore.ieee.org/document/10594769/\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"ENGINEERING, ELECTRICAL & ELECTRONIC\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"IEEE Open Journal of Antennas and Propagation","FirstCategoryId":"1085","ListUrlMain":"https://ieeexplore.ieee.org/document/10594769/","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ENGINEERING, ELECTRICAL & ELECTRONIC","Score":null,"Total":0}
Low-Profile ESPAR Using Metamaterial-Inspired Structure
This paper addresses the 3D nature of traditional Electronically Steerable Parasitic Array Radiators (ESPARs). Additionally, the required distance between the main radiator and the parasitic elements usually affects the antenna’s electrical size and the frequency bandwidth. To overcome these issues, the cylindrical parasitic elements in conventional ESPARs are replaced with Metamaterial-inspired structures that mimic artificial magnetic conductors (AMC). The AMC is realized by a capacitively loaded loop (CLL). PIN diodes electrically control the CLL’s behavior while radially loading a printed loop antenna. Switching ON/OFF the diodes changes the direction of the main lobe, resulting in a compact, single-layer, low-profile, and cost-effective structure. By replacing the PIN diodes with varactors, a dual-band and frequency-reconfigurable ESPAR are designed and implemented, which is not possible in traditional ESPAR structures.