A novel planar dual-band antenna by using a panel of photovoltaic cells as a metamaterial layer for dual-band operation is presented. A 10-Watt, 72-cell unmodified commercial photovoltaic panel is applied as a transparent layer in the first operation band and as a semi-transparent layer for λ/2 Fabry-Pérot cavity in the second operation band to achieve high antenna gain. Unit-cell transmission analysis is adopted to determine the frequency point of operation. The proposed prototype achieves remarkable 17.3 dBi and 6.6 dBi antenna gain at 3.5 GHz and 1.23 GHz, respectively fed by a dual-band dipole. With the aid of PV panel, the antenna can support an upper band at about 3550 MHz to cover the WiMAX 3.5 GHz (3400–3600 MHz) operation band and a lower band at about 1185 MHz to cover the 70 MHz operation bandwidth. The very combination of photovoltaic cell and antenna exhibits high fill factor, high-gain, and simple construction characteristics.
{"title":"High gain dual-band antenna using photovoltaic panel as metamaterial superstrate","authors":"Chun-Yih Wu, Hung-Hsuan Lin, Ta-Chun Pu, Jui-Hung Chen","doi":"10.1109/APS.2011.5996960","DOIUrl":"https://doi.org/10.1109/APS.2011.5996960","url":null,"abstract":"A novel planar dual-band antenna by using a panel of photovoltaic cells as a metamaterial layer for dual-band operation is presented. A 10-Watt, 72-cell unmodified commercial photovoltaic panel is applied as a transparent layer in the first operation band and as a semi-transparent layer for λ/2 Fabry-Pérot cavity in the second operation band to achieve high antenna gain. Unit-cell transmission analysis is adopted to determine the frequency point of operation. The proposed prototype achieves remarkable 17.3 dBi and 6.6 dBi antenna gain at 3.5 GHz and 1.23 GHz, respectively fed by a dual-band dipole. With the aid of PV panel, the antenna can support an upper band at about 3550 MHz to cover the WiMAX 3.5 GHz (3400–3600 MHz) operation band and a lower band at about 1185 MHz to cover the 70 MHz operation bandwidth. The very combination of photovoltaic cell and antenna exhibits high fill factor, high-gain, and simple construction characteristics.","PeriodicalId":6449,"journal":{"name":"2011 IEEE International Symposium on Antennas and Propagation (APSURSI)","volume":"92 1","pages":"2235-2238"},"PeriodicalIF":0.0,"publicationDate":"2011-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84092125","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}
Pub Date : 2011-07-03DOI: 10.1109/APS.2011.5997012
D. Bianchi, A. Monorchio, S. Genovesi, A. Corucci, D. Werner, P. Werner
A design procedure for synthesizing wideband conformal antenna arrays based on a multi-objective evolutionary algorithm is presented. In this paper, raised power series (RPS) are employed as a simple yet effective way to introduce aperiodicity into a conformal semi-circular phased antenna array for achieving wideband performance. Unlike conventional linear array synthesis methods where, for example, the genetic algorithm (GA) has been utilized to meet a single design objective, the multi-objective optimization technique proposed in this paper employs the nondominated sorting GA version II (NSGA-II).
{"title":"The pareto optimization of wide-band conformal antenna arrays","authors":"D. Bianchi, A. Monorchio, S. Genovesi, A. Corucci, D. Werner, P. Werner","doi":"10.1109/APS.2011.5997012","DOIUrl":"https://doi.org/10.1109/APS.2011.5997012","url":null,"abstract":"A design procedure for synthesizing wideband conformal antenna arrays based on a multi-objective evolutionary algorithm is presented. In this paper, raised power series (RPS) are employed as a simple yet effective way to introduce aperiodicity into a conformal semi-circular phased antenna array for achieving wideband performance. Unlike conventional linear array synthesis methods where, for example, the genetic algorithm (GA) has been utilized to meet a single design objective, the multi-objective optimization technique proposed in this paper employs the nondominated sorting GA version II (NSGA-II).","PeriodicalId":6449,"journal":{"name":"2011 IEEE International Symposium on Antennas and Propagation (APSURSI)","volume":"6 1","pages":"2427-2429"},"PeriodicalIF":0.0,"publicationDate":"2011-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78321028","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}
Pub Date : 2011-07-03DOI: 10.1109/APS.2011.5997195
F. Viani, M. Donelli, G. Oliveri, A. Massa, D. Trinchero
Nowadays, the wide expansion of smartphones and web-based wireless devices has brought to an increased demand of wireless infrastructures providing higher data bandwidth and better coverage. In this framework, the need of measurement systems aiming at verifying the compliance of the exposure levels to the generated electromagnetic (EM) fields with the safety limits imposed by the authorities came out. This work presents a low-cost solution for the pervasive and real-time electromagnetic monitoring based on a wireless sensor network (WSN) infrastructure. The proposed system implements a distributed strategy that manages both the electromagnetic field measurements acquired by means of the ad-hoc broadband field probes and the propagation of the information throughout the multihop links of the sensor network. The field probe has been designed to be completely passive and easily integrated within a small and low-power device deployed both in indoor and outdoor scenarios. The real-time capabilities as well as the potentialities of the proposed system have been experimentally validated both in controlled and real environments.
{"title":"A WSN-based system for real-time electromagnetic monitoring","authors":"F. Viani, M. Donelli, G. Oliveri, A. Massa, D. Trinchero","doi":"10.1109/APS.2011.5997195","DOIUrl":"https://doi.org/10.1109/APS.2011.5997195","url":null,"abstract":"Nowadays, the wide expansion of smartphones and web-based wireless devices has brought to an increased demand of wireless infrastructures providing higher data bandwidth and better coverage. In this framework, the need of measurement systems aiming at verifying the compliance of the exposure levels to the generated electromagnetic (EM) fields with the safety limits imposed by the authorities came out. This work presents a low-cost solution for the pervasive and real-time electromagnetic monitoring based on a wireless sensor network (WSN) infrastructure. The proposed system implements a distributed strategy that manages both the electromagnetic field measurements acquired by means of the ad-hoc broadband field probes and the propagation of the information throughout the multihop links of the sensor network. The field probe has been designed to be completely passive and easily integrated within a small and low-power device deployed both in indoor and outdoor scenarios. The real-time capabilities as well as the potentialities of the proposed system have been experimentally validated both in controlled and real environments.","PeriodicalId":6449,"journal":{"name":"2011 IEEE International Symposium on Antennas and Propagation (APSURSI)","volume":"36 3 1","pages":"3129-3132"},"PeriodicalIF":0.0,"publicationDate":"2011-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77967016","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}
Pub Date : 2011-07-03DOI: 10.1109/APS.2011.5996949
Shenheng Xu, H. Rajagopalan, Y. Rahmat-Samii
Reflectarrays are used as a hyperboloidal or ellipsoidal subreflector in dual-reflector antenna systems. The design formulas for reflectarrays acting as hyperboloid are discussed and its location consideration which is important for dual-reflector system is presented. A 48-inch Cassegrain antenna is chosen to demonstrate the application of compact dual-reflector designs. A subreflectarray is designed to emulate a hyperboloidal subreflector and the plots of the reflection phase shift and scattered field of the subreflectarray validate its effectiveness.
{"title":"Subreflectarrays for compact dual reflector antenna systems","authors":"Shenheng Xu, H. Rajagopalan, Y. Rahmat-Samii","doi":"10.1109/APS.2011.5996949","DOIUrl":"https://doi.org/10.1109/APS.2011.5996949","url":null,"abstract":"Reflectarrays are used as a hyperboloidal or ellipsoidal subreflector in dual-reflector antenna systems. The design formulas for reflectarrays acting as hyperboloid are discussed and its location consideration which is important for dual-reflector system is presented. A 48-inch Cassegrain antenna is chosen to demonstrate the application of compact dual-reflector designs. A subreflectarray is designed to emulate a hyperboloidal subreflector and the plots of the reflection phase shift and scattered field of the subreflectarray validate its effectiveness.","PeriodicalId":6449,"journal":{"name":"2011 IEEE International Symposium on Antennas and Propagation (APSURSI)","volume":"36 1","pages":"2195-2197"},"PeriodicalIF":0.0,"publicationDate":"2011-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73151320","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}
Pub Date : 2011-07-03DOI: 10.1109/APS.2011.5997146
Xiaoyu Cheng, Jun-Wei Shi, P. Jao, D. Senior, Y. Yoon
Two linear arrays of split ring resonators (SRR) with broad side coupling and various relative positions are investigated for controllable wave transmission in a rectangular waveguide. Each array is designed to have a different unit size of SRRs. A rectangular waveguide with a cutoff frequency of 3.2 GHz shows an additional stopband between 3.4 GHz and 4.8 GHz when a five element SRR array with a unit SRR dimension of 18mm by 18 mm and a pitch of 25mm is loaded. The other five element array with a unit dimension of 10mm by 10mm and a pitch of 25mm is inserted adjacent to the first array with a broad side coupling resulting in another stopband between 5 GHz and 6.5 GHz, where the coupling gap between two arrays is approximately 3mm (120mil) and the dielectric constant is 2.55. The center frequency of the stopband is tunable depending on the degree of alignment between those two arrays. One of the SRR arrays has a piece of magnet attached to its edge, and in-situ tuning is achieved by moving it by a ferrite (or a permanent magent) from outside of the waveguide. The tuning results of numerical simulation show good agreement with those of measurement.
{"title":"Reconfigurable split ring resonator array loaded waveguide for insitu tuning","authors":"Xiaoyu Cheng, Jun-Wei Shi, P. Jao, D. Senior, Y. Yoon","doi":"10.1109/APS.2011.5997146","DOIUrl":"https://doi.org/10.1109/APS.2011.5997146","url":null,"abstract":"Two linear arrays of split ring resonators (SRR) with broad side coupling and various relative positions are investigated for controllable wave transmission in a rectangular waveguide. Each array is designed to have a different unit size of SRRs. A rectangular waveguide with a cutoff frequency of 3.2 GHz shows an additional stopband between 3.4 GHz and 4.8 GHz when a five element SRR array with a unit SRR dimension of 18mm by 18 mm and a pitch of 25mm is loaded. The other five element array with a unit dimension of 10mm by 10mm and a pitch of 25mm is inserted adjacent to the first array with a broad side coupling resulting in another stopband between 5 GHz and 6.5 GHz, where the coupling gap between two arrays is approximately 3mm (120mil) and the dielectric constant is 2.55. The center frequency of the stopband is tunable depending on the degree of alignment between those two arrays. One of the SRR arrays has a piece of magnet attached to its edge, and in-situ tuning is achieved by moving it by a ferrite (or a permanent magent) from outside of the waveguide. The tuning results of numerical simulation show good agreement with those of measurement.","PeriodicalId":6449,"journal":{"name":"2011 IEEE International Symposium on Antennas and Propagation (APSURSI)","volume":"116 4 1","pages":"2947-2950"},"PeriodicalIF":0.0,"publicationDate":"2011-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79972500","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}
Pub Date : 2011-07-03DOI: 10.1109/APS.2011.5996957
Minseok Han, Jaehoon Choi
A compact dual-band MIMO antenna using a symmetric slotted structure is proposed for next generation USB dongle applications. The proposed MIMO antenna consists of two printed dual-band PIFAs with a symmetric slotted strip. The first resonance frequency is controlled by the total length of the main radiating strip with coupling slot (W1 = 2 mm and W2 = 2 mm) has a length of 70 mm, which is about 0.18 wavelengths at 0.77 GHz, but it can easily generate a resonant mode to cover LTE band 13 (LTE Band 13; 0.746–0.787 GHz) and the second one is tuned by the width of the slot (W1 and W2) and the position of the port 1 and 2 (P1 and P2) to cover mobile world interoperability for microwave access band (M-WiMAX Band; 2.5–2.69 GHz). In order to improve the isolation characteristic at the LTE and M-WiMAX bands, a symmetric slotted structure and the jointed shorting line are used to reduce the interaction between the two PIFAs. The proposed MIMO antenna has an isolation of approximately 20 dB at LTE band 13 and the envelope correlation coefficient (ECC) of the two antennas is less than 0.2 over the whole LTE band 13. To evaluate the performance of the proposed antenna, key performance parameters such as the total efficiency, ECC, mean effective gain (MEG), MEG ratio and actual diversity gain are analyzed.
提出了一种采用对称开槽结构的紧凑型双频MIMO天线，用于下一代USB加密狗应用。所提出的MIMO天线由两个带有对称开槽带的印刷双频pifa组成。第一共振频率由带耦合槽的主辐射条(W1 = 2 mm, W2 = 2 mm)的总长度控制，其长度为70 mm，在0.77 GHz处约为0.18波长，但很容易产生覆盖LTE频段13的谐振模式(LTE band 13;0.746-0.787 GHz)，第二种通过插槽的宽度(W1和W2)和端口1和2 (P1和P2)的位置进行调谐，以覆盖微波接入频段(M-WiMAX band)的移动世界互操作性;2.5 - -2.69 GHz)。为了改善LTE和M-WiMAX频段的隔离特性，采用对称的开槽结构和连接的短线来减少两个pifa之间的相互作用。该MIMO天线在LTE频段13的隔离度约为20 dB，在整个LTE频段13上，两根天线的包络相关系数(ECC)小于0.2。为了评估该天线的性能，分析了总效率、ECC、平均有效增益(MEG)、MEG比和实际分集增益等关键性能参数。
{"title":"Dual-band MIMO antenna using a symmetric slotted structure for 4G USB dongle application","authors":"Minseok Han, Jaehoon Choi","doi":"10.1109/APS.2011.5996957","DOIUrl":"https://doi.org/10.1109/APS.2011.5996957","url":null,"abstract":"A compact dual-band MIMO antenna using a symmetric slotted structure is proposed for next generation USB dongle applications. The proposed MIMO antenna consists of two printed dual-band PIFAs with a symmetric slotted strip. The first resonance frequency is controlled by the total length of the main radiating strip with coupling slot (W1 = 2 mm and W2 = 2 mm) has a length of 70 mm, which is about 0.18 wavelengths at 0.77 GHz, but it can easily generate a resonant mode to cover LTE band 13 (LTE Band 13; 0.746–0.787 GHz) and the second one is tuned by the width of the slot (W1 and W2) and the position of the port 1 and 2 (P1 and P2) to cover mobile world interoperability for microwave access band (M-WiMAX Band; 2.5–2.69 GHz). In order to improve the isolation characteristic at the LTE and M-WiMAX bands, a symmetric slotted structure and the jointed shorting line are used to reduce the interaction between the two PIFAs. The proposed MIMO antenna has an isolation of approximately 20 dB at LTE band 13 and the envelope correlation coefficient (ECC) of the two antennas is less than 0.2 over the whole LTE band 13. To evaluate the performance of the proposed antenna, key performance parameters such as the total efficiency, ECC, mean effective gain (MEG), MEG ratio and actual diversity gain are analyzed.","PeriodicalId":6449,"journal":{"name":"2011 IEEE International Symposium on Antennas and Propagation (APSURSI)","volume":"74 1","pages":"2223-2226"},"PeriodicalIF":0.0,"publicationDate":"2011-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79996625","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}
Pub Date : 2011-07-03DOI: 10.1109/APS.2011.6058700
J. Gomez, A. Tayebi, I. González, F. Cátedra
The implementation of Boolean functionalities such as the intersection, subtraction and union of complex closed or open of bodies defined by NURBS is presented. So any arbitrary structure can be processed. While the vast majority of the proposed methods provide a resulting object composed by flat facets as a result of the Boolean operation, our implementation is able to give accurate trimmed surfaces that perfectly fits the real shape of the original objects. The developed approach is explained and some examples are shown to validate the code.
{"title":"Implementation of geometrical boolean functions between bodies defined by NURBS","authors":"J. Gomez, A. Tayebi, I. González, F. Cátedra","doi":"10.1109/APS.2011.6058700","DOIUrl":"https://doi.org/10.1109/APS.2011.6058700","url":null,"abstract":"The implementation of Boolean functionalities such as the intersection, subtraction and union of complex closed or open of bodies defined by NURBS is presented. So any arbitrary structure can be processed. While the vast majority of the proposed methods provide a resulting object composed by flat facets as a result of the Boolean operation, our implementation is able to give accurate trimmed surfaces that perfectly fits the real shape of the original objects. The developed approach is explained and some examples are shown to validate the code.","PeriodicalId":6449,"journal":{"name":"2011 IEEE International Symposium on Antennas and Propagation (APSURSI)","volume":"36 11 1","pages":"3339-3342"},"PeriodicalIF":0.0,"publicationDate":"2011-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80180446","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}
Pub Date : 2011-07-03DOI: 10.1109/APS.2011.5997056
C. Valagiannopoulos, P. Alitalo, S. Tretyakov
The use of transmission-line networks as periodic structures emulating many interesting metamaterial-related phenomena, such as negative refraction ([1], [2]) and cloaking ([3], [4]), has gained increasing interest in the scientific community. Transmission-line networks offer a simple way to create non-resonant, broadband structures exhibiting exotic wave propagation characteristics. A big drawback of traditional transmission-line metamaterials is the fact that most such structures are not inherently coupled with electromagnetic waves propagating in a homogeneous material, such as free space for example. Recently various approaches to couple transmission-line networks to free space have been proposed, see, e.g., [3], [4], [5]. The approach of [3], [4], is based on matching the free space wave to a network by introducing a special transition layer which couples the different modes propagating in the two different “media”. Such a layer can be formed simply by creating metal tapers, which guide the wave with very small amount of reflections from one media to another [3]. This technique has been successfully employed to create an electromagnetic cloaking device based on transmission-line networks [4].
{"title":"Analytical model for coupling of waves between a homogeneous medium and a volumetric transmission-line network","authors":"C. Valagiannopoulos, P. Alitalo, S. Tretyakov","doi":"10.1109/APS.2011.5997056","DOIUrl":"https://doi.org/10.1109/APS.2011.5997056","url":null,"abstract":"The use of transmission-line networks as periodic structures emulating many interesting metamaterial-related phenomena, such as negative refraction ([1], [2]) and cloaking ([3], [4]), has gained increasing interest in the scientific community. Transmission-line networks offer a simple way to create non-resonant, broadband structures exhibiting exotic wave propagation characteristics. A big drawback of traditional transmission-line metamaterials is the fact that most such structures are not inherently coupled with electromagnetic waves propagating in a homogeneous material, such as free space for example. Recently various approaches to couple transmission-line networks to free space have been proposed, see, e.g., [3], [4], [5]. The approach of [3], [4], is based on matching the free space wave to a network by introducing a special transition layer which couples the different modes propagating in the two different “media”. Such a layer can be formed simply by creating metal tapers, which guide the wave with very small amount of reflections from one media to another [3]. This technique has been successfully employed to create an electromagnetic cloaking device based on transmission-line networks [4].","PeriodicalId":6449,"journal":{"name":"2011 IEEE International Symposium on Antennas and Propagation (APSURSI)","volume":"4 1","pages":"2597-2600"},"PeriodicalIF":0.0,"publicationDate":"2011-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80311535","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}
Pub Date : 2011-07-03DOI: 10.1109/APS.2011.5997038
Le Wang, G. Pan
Multi-reflector based collimation antennas are widely used in microwave remote sensing and millimeter wave imaging. For design and analysis of these antenna systems, many methods have been introduced of which the Diffracted Gaussian beam approach (DGBA) is among the most popular. For electrically large reflector antennas, the computation of reflection and diffraction for gigantic number of elementary Gaussian beams demands huge computational resources. To simulate a reflector antenna in hundreds to thousands of wavelength, it may require independent Gaussian beams ranging from tens of millions to a billion, which is extremely time-consuming on conventional computers. To this end, the parallel computer provides one of ultimate solutions since reflection and diffraction of each Gaussian beam can be simulated separately on different CPUs simultaneously. In this paper we present the DGBA simulation of a reflector antenna system on high performance parallel computing platforms, based on Message Passing Interface (MPI).
{"title":"Daubechies framework based Diffracted Gaussian beam approach on parallel computing platforms","authors":"Le Wang, G. Pan","doi":"10.1109/APS.2011.5997038","DOIUrl":"https://doi.org/10.1109/APS.2011.5997038","url":null,"abstract":"Multi-reflector based collimation antennas are widely used in microwave remote sensing and millimeter wave imaging. For design and analysis of these antenna systems, many methods have been introduced of which the Diffracted Gaussian beam approach (DGBA) is among the most popular. For electrically large reflector antennas, the computation of reflection and diffraction for gigantic number of elementary Gaussian beams demands huge computational resources. To simulate a reflector antenna in hundreds to thousands of wavelength, it may require independent Gaussian beams ranging from tens of millions to a billion, which is extremely time-consuming on conventional computers. To this end, the parallel computer provides one of ultimate solutions since reflection and diffraction of each Gaussian beam can be simulated separately on different CPUs simultaneously. In this paper we present the DGBA simulation of a reflector antenna system on high performance parallel computing platforms, based on Message Passing Interface (MPI).","PeriodicalId":6449,"journal":{"name":"2011 IEEE International Symposium on Antennas and Propagation (APSURSI)","volume":"18 1","pages":"2527-2529"},"PeriodicalIF":0.0,"publicationDate":"2011-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80349596","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}
Pub Date : 2011-07-03DOI: 10.1109/APS.2011.5996962
Shih-Chia Chiu, Shih-Yuan Chen
A novel high-gain, circularly polarized resonant cavity antenna (RCA) using a two-layer frequency selective surface (FSS) as its superstrate is presented. In the proposed design, two kinds of FSSs, namely an inductive sheet and a capacitive sheet, are used, both of which are designed to be highly reflective to achieve gain and directivity enhancement. Furthermore, by properly designing the dimensions of these two sheets and aligning them, the linearly polarized wave radiated by the source patch antenna can be transformed into circularly polarized radiation. Based on the operating principles of RCAs, the modeling, design, and characterization of the FSS-based superstrate for use in the antenna are also presented. A broadside peak gain of 13.12 dBi, a flat gain response, and a wide axial-ratio bandwidth of the proposed antenna are achieved.
{"title":"High-gain circularly polarized resonant cavity antenna using FSS superstrate","authors":"Shih-Chia Chiu, Shih-Yuan Chen","doi":"10.1109/APS.2011.5996962","DOIUrl":"https://doi.org/10.1109/APS.2011.5996962","url":null,"abstract":"A novel high-gain, circularly polarized resonant cavity antenna (RCA) using a two-layer frequency selective surface (FSS) as its superstrate is presented. In the proposed design, two kinds of FSSs, namely an inductive sheet and a capacitive sheet, are used, both of which are designed to be highly reflective to achieve gain and directivity enhancement. Furthermore, by properly designing the dimensions of these two sheets and aligning them, the linearly polarized wave radiated by the source patch antenna can be transformed into circularly polarized radiation. Based on the operating principles of RCAs, the modeling, design, and characterization of the FSS-based superstrate for use in the antenna are also presented. A broadside peak gain of 13.12 dBi, a flat gain response, and a wide axial-ratio bandwidth of the proposed antenna are achieved.","PeriodicalId":6449,"journal":{"name":"2011 IEEE International Symposium on Antennas and Propagation (APSURSI)","volume":"963 1","pages":"2242-2245"},"PeriodicalIF":0.0,"publicationDate":"2011-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77071844","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}
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