{"title":"用于GNSS应用的新型螺旋天线","authors":"Olcay Yiğit","doi":"10.1002/mop.70192","DOIUrl":null,"url":null,"abstract":"<div>\n \n <p>Spiral antennas are the most widely used antenna types which are frequency independent. And its wideband circular polarization characteristic, it is able to use in navigation systems. Most navigation systems are in the L band however if a military band is considered, the frequency band becomes 450 Mhz range which is the Global Navigation Satellite System Band. This study presents an Archimedean spiral antenna with novel integrated bead-shaped conductors to reduce the length of the arm and increase the gain. Bead-shaped conductors acting as a capacitor between arms of spiral, provide a broadband matching with 50 ohm and high gain. High impedance surface (HIS) which has periodically placed rectangular conductor reflects the backward signals within a phase. So there is no need for more length to enhance gain and lower the antenna dimensions. Measurements and simulations show that it is a high-performance antenna that meets the requirements. The designed antenna gain is over 6 dBic and the axial ratio is under 3 dB along the frequency range.</p>\n </div>","PeriodicalId":18562,"journal":{"name":"Microwave and Optical Technology Letters","volume":"67 4","pages":""},"PeriodicalIF":1.0000,"publicationDate":"2025-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Novel Spiral Antenna for GNSS Applications\",\"authors\":\"Olcay Yiğit\",\"doi\":\"10.1002/mop.70192\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div>\\n \\n <p>Spiral antennas are the most widely used antenna types which are frequency independent. And its wideband circular polarization characteristic, it is able to use in navigation systems. Most navigation systems are in the L band however if a military band is considered, the frequency band becomes 450 Mhz range which is the Global Navigation Satellite System Band. This study presents an Archimedean spiral antenna with novel integrated bead-shaped conductors to reduce the length of the arm and increase the gain. Bead-shaped conductors acting as a capacitor between arms of spiral, provide a broadband matching with 50 ohm and high gain. High impedance surface (HIS) which has periodically placed rectangular conductor reflects the backward signals within a phase. So there is no need for more length to enhance gain and lower the antenna dimensions. Measurements and simulations show that it is a high-performance antenna that meets the requirements. The designed antenna gain is over 6 dBic and the axial ratio is under 3 dB along the frequency range.</p>\\n </div>\",\"PeriodicalId\":18562,\"journal\":{\"name\":\"Microwave and Optical Technology Letters\",\"volume\":\"67 4\",\"pages\":\"\"},\"PeriodicalIF\":1.0000,\"publicationDate\":\"2025-04-12\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Microwave and Optical Technology Letters\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://onlinelibrary.wiley.com/doi/10.1002/mop.70192\",\"RegionNum\":4,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q4\",\"JCRName\":\"ENGINEERING, ELECTRICAL & ELECTRONIC\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Microwave and Optical Technology Letters","FirstCategoryId":"5","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1002/mop.70192","RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"ENGINEERING, ELECTRICAL & ELECTRONIC","Score":null,"Total":0}
Spiral antennas are the most widely used antenna types which are frequency independent. And its wideband circular polarization characteristic, it is able to use in navigation systems. Most navigation systems are in the L band however if a military band is considered, the frequency band becomes 450 Mhz range which is the Global Navigation Satellite System Band. This study presents an Archimedean spiral antenna with novel integrated bead-shaped conductors to reduce the length of the arm and increase the gain. Bead-shaped conductors acting as a capacitor between arms of spiral, provide a broadband matching with 50 ohm and high gain. High impedance surface (HIS) which has periodically placed rectangular conductor reflects the backward signals within a phase. So there is no need for more length to enhance gain and lower the antenna dimensions. Measurements and simulations show that it is a high-performance antenna that meets the requirements. The designed antenna gain is over 6 dBic and the axial ratio is under 3 dB along the frequency range.
期刊介绍：
Microwave and Optical Technology Letters provides quick publication (3 to 6 month turnaround) of the most recent findings and achievements in high frequency technology, from RF to optical spectrum. The journal publishes original short papers and letters on theoretical, applied, and system results in the following areas.
- RF, Microwave, and Millimeter Waves
- Antennas and Propagation
- Submillimeter-Wave and Infrared Technology
- Optical Engineering
All papers are subject to peer review before publication
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