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2014 International Workshop on Antenna Technology: Small Antennas, Novel EM Structures and Materials, and Applications (iWAT)最新文献

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Conformal load bearing antenna structure using Carbon Fibre Reinforced Polymer (CFRP) 碳纤维增强聚合物(CFRP)共形承重天线结构
2014 International Workshop on Antenna Technology: Small Antennas, Novel EM Structures and Materials, and Applications (iWAT) Pub Date : 2014-03-04 DOI: 10.1109/IWAT.2014.6958612
K. Ghorbani
{"title":"Conformal load bearing antenna structure using Carbon Fibre Reinforced Polymer (CFRP)","authors":"K. Ghorbani","doi":"10.1109/IWAT.2014.6958612","DOIUrl":"https://doi.org/10.1109/IWAT.2014.6958612","url":null,"abstract":"Modern aircraft communication systems are required to operate over a wide range of different frequency bands. Communication services can lead to the requirement for more than 15 different antenna structures. Modern examples of such antenna structures include blade antennas. Typically these antennas are mounted perpendicular to the skin of an aircraft in multiple positions to reduce interference and maintain aerodynamic performance. Blade antennas or those rigid antennas, which protrude from the exterior of an aircraft, can significantly increase parasitic drag. This in turn reduces aerodynamic performance affecting maximum airspeed, range, payload capacity and increase takeoff distances. Smart skin technology can be utilized to embed the antenna elements into the skin of aircraft wing or fuselage structures. The antenna would form a conformal, load bearing structure that can reduce aircraft weight, radar cross-section and aerodynamic parasitic drag [1]. This leads to a more efficient use of the existing aero-structure, providing a raft of benefits.","PeriodicalId":337951,"journal":{"name":"2014 International Workshop on Antenna Technology: Small Antennas, Novel EM Structures and Materials, and Applications (iWAT)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131314578","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 6
RCS reduction of microstrip antenna by complementary split-ring resonators structure 互补裂环谐振器结构降低微带天线RCS
2014 International Workshop on Antenna Technology: Small Antennas, Novel EM Structures and Materials, and Applications (iWAT) Pub Date : 2014-03-04 DOI: 10.1109/IWAT.2014.6958680
Y. Jia, Y. Liu, S. Gong
{"title":"RCS reduction of microstrip antenna by complementary split-ring resonators structure","authors":"Y. Jia, Y. Liu, S. Gong","doi":"10.1109/IWAT.2014.6958680","DOIUrl":"https://doi.org/10.1109/IWAT.2014.6958680","url":null,"abstract":"In this paper, a new approach for the radar cross section (RCS) reduction of microstrip patch antenna is developed. For this purpose, complementary split-ring resonators (CSRRs) are etched on the ground of the microstrip patch antenna. A conventional microstrip patch antenna is designed with the central frequency of 5.0 GHz. The monostatic RCS of the microstrip patch antenna with CSRRs can be reduced as much as 6.3dB compared to that of the conventional antenna while maintaining almost the same radiation characters.","PeriodicalId":337951,"journal":{"name":"2014 International Workshop on Antenna Technology: Small Antennas, Novel EM Structures and Materials, and Applications (iWAT)","volume":"168 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124696542","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A simple planar circularly polarized antenna for GPS system 一种用于GPS系统的简易平面圆极化天线
2014 International Workshop on Antenna Technology: Small Antennas, Novel EM Structures and Materials, and Applications (iWAT) Pub Date : 2014-03-04 DOI: 10.1109/IWAT.2014.6958685
Y. Cao, S. Cheung, Li Liu, T. Yuk
{"title":"A simple planar circularly polarized antenna for GPS system","authors":"Y. Cao, S. Cheung, Li Liu, T. Yuk","doi":"10.1109/IWAT.2014.6958685","DOIUrl":"https://doi.org/10.1109/IWAT.2014.6958685","url":null,"abstract":"The design of a planar right-handed circularly polarized (RHCP) antenna used for the Global Positioning System (GPS) is presented in this paper. The antenna consists of two meandered monopoles, a feeding network designed using the Wilkinson power divider and a defected ground structure (DGS). These two meandered monopoles resonate at about 1.575 GHz and are placed perpendicular to each other. The Wilkinson power divider divides the input signal into two signals with equal amplitude and phase. A phase difference of 90° between the signals to the monopoles is simply achieved by using a difference in length of λg/4 (λg is the guide wavelength) in the two feed lines. The DGS is used to increase isolation between the two monopoles. Measured results show that the antenna has an impedance bandwidth (for reflection coefficient S11<;-10 dB) from 1.12 to 1.85 GHz and an axial-ratio bandwidth (for axial ratio AR <; 3 dB) from 1.53 to 1.66 GHz in the GPS band. The simulated and measured S11, AR, radiation pattern, efficiency and gain are presented.","PeriodicalId":337951,"journal":{"name":"2014 International Workshop on Antenna Technology: Small Antennas, Novel EM Structures and Materials, and Applications (iWAT)","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127795294","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
Bifocal wide angle lens with optimized construction algorithm for 60 GHz 60 GHz双焦点广角镜头优化构造算法
2014 International Workshop on Antenna Technology: Small Antennas, Novel EM Structures and Materials, and Applications (iWAT) Pub Date : 2014-03-04 DOI: 10.1109/IWAT.2014.6958591
H. Gulan, S. Marahrens, C. Rusch, B. Goettel, T. Zwick
{"title":"Bifocal wide angle lens with optimized construction algorithm for 60 GHz","authors":"H. Gulan, S. Marahrens, C. Rusch, B. Goettel, T. Zwick","doi":"10.1109/IWAT.2014.6958591","DOIUrl":"https://doi.org/10.1109/IWAT.2014.6958591","url":null,"abstract":"In this paper a dielectric bifocal lens for a 60 GHz wide angle scanning antenna is presented. The lens is designed with the construction algorithm of Holt & Mayer. The construction algorithm is improved in a way that the bend of the lens towards the focal plane is no longer determined by trial and error but calculated numerically with a bisection method. Finally a zoned bifocal lens made of high density polyethylene (HDPE) is simulated and compared to a conventional plano-convex one of the same diameter.","PeriodicalId":337951,"journal":{"name":"2014 International Workshop on Antenna Technology: Small Antennas, Novel EM Structures and Materials, and Applications (iWAT)","volume":"68 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115636856","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Screen printed frequency selective surfaces for room isolation in buildings 用于建筑物房间隔离的丝网印刷频率选择表面
2014 International Workshop on Antenna Technology: Small Antennas, Novel EM Structures and Materials, and Applications (iWAT) Pub Date : 2014-03-04 DOI: 10.1109/IWAT.2014.6958640
A. Dewani, M. Kanesan, D. Thiel, S. O’keefe, Mohammad Vatankhah Varnoosfaderani
{"title":"Screen printed frequency selective surfaces for room isolation in buildings","authors":"A. Dewani, M. Kanesan, D. Thiel, S. O’keefe, Mohammad Vatankhah Varnoosfaderani","doi":"10.1109/IWAT.2014.6958640","DOIUrl":"https://doi.org/10.1109/IWAT.2014.6958640","url":null,"abstract":"A ring type frequency selective surface (FSS) can provide transmission stop-band characteristics in rooms. This allows adjacent rooms to be isolated for one LAN for frequency reuse while other frequencies pass through the walls with minimal attenuation. The FSS was screen printed on a thin flexible plastic substrate of permittivity 3.2 with a stop band at 12.3GHz and 10dB bandwidth of 3.5GHz. The variation in bandstop characteristics was investigated for various wall materials. The centre frequency varied by more than 3 GHz for common wall materials which means significant transparency for some building materials. The technique is a low cost method of confining LAN picocells in one room.","PeriodicalId":337951,"journal":{"name":"2014 International Workshop on Antenna Technology: Small Antennas, Novel EM Structures and Materials, and Applications (iWAT)","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124064555","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 6
A broadband cage antenna optimized by genetic algorithm 一种基于遗传算法优化的宽带笼型天线
2014 International Workshop on Antenna Technology: Small Antennas, Novel EM Structures and Materials, and Applications (iWAT) Pub Date : 2014-03-04 DOI: 10.1109/IWAT.2014.6958672
Jingya Deng, Xiaojun Chen, Rui Yu, Xiang Wen
{"title":"A broadband cage antenna optimized by genetic algorithm","authors":"Jingya Deng, Xiaojun Chen, Rui Yu, Xiang Wen","doi":"10.1109/IWAT.2014.6958672","DOIUrl":"https://doi.org/10.1109/IWAT.2014.6958672","url":null,"abstract":"An optimized design of cage antenna Using FEKO and genetic algorithm (GA) is presented. The geometry of the antenna is optimized by GA to get best VSWR and gain performances over the entire 100-400MHz band. The height of the optimized geometry of the cage antenna is only 0.75m, while the diameter is only 0.15m. The antenna can work over entire 100-400MHz with the VSWR lower than 3 and the gain higher than 1.55dBi.","PeriodicalId":337951,"journal":{"name":"2014 International Workshop on Antenna Technology: Small Antennas, Novel EM Structures and Materials, and Applications (iWAT)","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123300836","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Effective techniques for extending the directivity-bandwidth of resonant cavity antennas 扩展谐振腔天线指向性带宽的有效技术
2014 International Workshop on Antenna Technology: Small Antennas, Novel EM Structures and Materials, and Applications (iWAT) Pub Date : 2014-03-04 DOI: 10.1109/IWAT.2014.6958658
R. Hashmi, Basit A. Zebt, K. Esselle
{"title":"Effective techniques for extending the directivity-bandwidth of resonant cavity antennas","authors":"R. Hashmi, Basit A. Zebt, K. Esselle","doi":"10.1109/IWAT.2014.6958658","DOIUrl":"https://doi.org/10.1109/IWAT.2014.6958658","url":null,"abstract":"We present extremely simple techniques developed recently to address the bandwidth enhancement of resonant cavity antennas (RCAs) made out of unprinted dielectric slabs. These techniques are suitable for both unit-cell superstrate models as well as the finite-size RCA model in which superstructure area is optimized to increase the 3dB directivity bandwidth of RCA. It is shown that controlled dielectric and thickness contrast can be used as a defect to create wideband RCA superstrates in unit-cell design whereas the use of small superstrate area can directly enhance the 3dB bandwidth. Prototype antenna design is presented and results are included to demonstrate the improvements obtained. Significant improvements in 3dB bandwidth (≥50%) have been observed as compared to conventional designs while conserving design simplicity, practicality and ease of fabrication, which are the key advantages of presented techniques.","PeriodicalId":337951,"journal":{"name":"2014 International Workshop on Antenna Technology: Small Antennas, Novel EM Structures and Materials, and Applications (iWAT)","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122825169","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Miniaturized integrated Butler Matrix for 180 GHz chip-to-chip communication 用于180 GHz芯片对芯片通信的小型化集成管家矩阵
2014 International Workshop on Antenna Technology: Small Antennas, Novel EM Structures and Materials, and Applications (iWAT) Pub Date : 2014-03-04 DOI: 10.1109/IWAT.2014.6958592
M. Jenning, D. Plettemeier
{"title":"Miniaturized integrated Butler Matrix for 180 GHz chip-to-chip communication","authors":"M. Jenning, D. Plettemeier","doi":"10.1109/IWAT.2014.6958592","DOIUrl":"https://doi.org/10.1109/IWAT.2014.6958592","url":null,"abstract":"This paper presents an improved Butler Matrix (BM) beam-switching network. The BM is designed for a thin film Benzocyclobutene (BCB) technology on a silicon wafer. It can be placed on an interposer or 3D chip stack. The operational frequency will be at 180 GHz and the bandwidth exceeds 30 GHz. The footprint of the BM is below 1 mm2. The field of application is ultra high speed short range inter-chip communication in the mm-Wave frequency range.","PeriodicalId":337951,"journal":{"name":"2014 International Workshop on Antenna Technology: Small Antennas, Novel EM Structures and Materials, and Applications (iWAT)","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121729493","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 5
Design of base-station antennas with stable radiation patterns 具有稳定辐射方向图的基站天线设计
2014 International Workshop on Antenna Technology: Small Antennas, Novel EM Structures and Materials, and Applications (iWAT) Pub Date : 2014-03-04 DOI: 10.1109/IWAT.2014.6958580
Q. Chu, Yu Luo, Dingliang Wen
{"title":"Design of base-station antennas with stable radiation patterns","authors":"Q. Chu, Yu Luo, Dingliang Wen","doi":"10.1109/IWAT.2014.6958580","DOIUrl":"https://doi.org/10.1109/IWAT.2014.6958580","url":null,"abstract":"The methods to design base-station antennas with stable radiation patterns in broadband are presented. Through a rational place of two dipoles in parallel configuration or in orthogonal over a reflector, the antennas with a wide impedance bandwidth, stable radiation pattern and nearly identical E- and H-plane can be achieved due to the complementation of the radiation patterns. According to these method, multi-dipole antennas with about 60% impedance bandwidth (SWR<;1.5) and stable radiation patterns of 3-dB beamwidth 63±3 degree are achieved.","PeriodicalId":337951,"journal":{"name":"2014 International Workshop on Antenna Technology: Small Antennas, Novel EM Structures and Materials, and Applications (iWAT)","volume":"60 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116555104","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
Design of a 600 MHz non-Foster dipole 600 MHz非福斯特偶极子的设计
2014 International Workshop on Antenna Technology: Small Antennas, Novel EM Structures and Materials, and Applications (iWAT) Pub Date : 2014-03-04 DOI: 10.1109/IWAT.2014.6958684
Wenzhi Wang, Jun-ping Geng, R. Jin, Xianling Liang, R. Ziolkowski
{"title":"Design of a 600 MHz non-Foster dipole","authors":"Wenzhi Wang, Jun-ping Geng, R. Jin, Xianling Liang, R. Ziolkowski","doi":"10.1109/IWAT.2014.6958684","DOIUrl":"https://doi.org/10.1109/IWAT.2014.6958684","url":null,"abstract":"The design of a 600 MHz non-Foster dipole is presented. The antenna and NIC layout are modeled together using HFSS to include the mutual coupling effects between these two parts. With the formulation developed, the return loss and radiation efficiency of the non-Foster dipole can be calculated and optimized simultaneously in the circuit simulator ADS. The optimized antenna achieves a -10 dB matching bandwidth of 17.5% in simulation, with ka = 0.49. The calculated results indicate that with the non-Foster element acting as an amplifier, a radiation efficiency of over 100% within the frequency band of interest is possible.","PeriodicalId":337951,"journal":{"name":"2014 International Workshop on Antenna Technology: Small Antennas, Novel EM Structures and Materials, and Applications (iWAT)","volume":"115 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127340839","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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