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Laboratory tests on a NF-FF transformation technique from nonredundant bi-polar data 非冗余双极数据的NF-FF变换技术的实验室测试
2016 Loughborough Antennas & Propagation Conference (LAPC) Pub Date : 2016-11-01 DOI: 10.1109/LAPC.2016.7807563
F. D’Agostino, F. Ferrara, C. Gennarelli, R. Guerriero, M. Migliozzi
{"title":"Laboratory tests on a NF-FF transformation technique from nonredundant bi-polar data","authors":"F. D’Agostino, F. Ferrara, C. Gennarelli, R. Guerriero, M. Migliozzi","doi":"10.1109/LAPC.2016.7807563","DOIUrl":"https://doi.org/10.1109/LAPC.2016.7807563","url":null,"abstract":"This communication concerns the experimental validation of a probe compensated near-field - far-field (NF-FF) transformation technique with bi-polar scanning for quasi-planar antennas requiring a minimum number of NF data. Such a technique properly exploits the nonredundant sampling representations of the electromagnetic fields to obtain an efficient representation of the voltage measured by the probe on the scanning plane in terms of the bi-polar NF samples. A double bowl, i.e. a surface formed by two circular bowls with the same aperture diameter, but eventually different lateral bends, is adopted to model the quasi-planar antenna under test. An optimal sampling interpolation formula is applied to reconstruct, in an efficient and accurate way, the NF data required by the classical plane-rectangular NF-FF transformation from the collected bi-polar ones. Thus, a remarkable reduction in the number of the NF data to be acquired and related acquisition time is gained. Some results of experimental tests, carried out at the Antenna Characterization Lab of the University of Salerno and assessing the effectiveness of the presented technique, are shown.","PeriodicalId":253379,"journal":{"name":"2016 Loughborough Antennas & Propagation Conference (LAPC)","volume":"66 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114573010","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
In-line wideband contactless GrooveGap to microstrip transition with PMC packaging for MMIC integration in gap waveguide technology 带PMC封装的线内宽带非接触式沟槽到微带过渡，用于隙波导技术中MMIC集成
2016 Loughborough Antennas & Propagation Conference (LAPC) Pub Date : 2016-11-01 DOI: 10.1109/LAPC.2016.7807513
C. Sanchez-Cabello, L. Inclán-Sánchez, J. Vazquez-Roy, E. Rajo-Iglesias
{"title":"In-line wideband contactless GrooveGap to microstrip transition with PMC packaging for MMIC integration in gap waveguide technology","authors":"C. Sanchez-Cabello, L. Inclán-Sánchez, J. Vazquez-Roy, E. Rajo-Iglesias","doi":"10.1109/LAPC.2016.7807513","DOIUrl":"https://doi.org/10.1109/LAPC.2016.7807513","url":null,"abstract":"A contactless, in-line, wideband and low-loss micro strip to GrooveGap waveguide transition operating at X-band is presented. The principle of operation is based on transforming EM fields from the SIW to the RidgeGap waveguide mode via near field electromagnetic coupling. This is advantageous, since the proposed solution avoids the use of metal contact between the SIW and one of the waveguide parts. Furthermore, metamaterial-based gap waveguide technology provides a resonance-free packaging solution for the integrated MMIC amplifier. It is the first time a transition that also provides the packaging of the active component is designed. Our device works on X-band due to present test equipment limitations, but it can be scaled to mm-wave frequencies and beyond.","PeriodicalId":253379,"journal":{"name":"2016 Loughborough Antennas & Propagation Conference (LAPC)","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129199531","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
Label-type 3D RFID tag mountable on metallic and non-metallic objects 标签型3D RFID标签可安装在金属和非金属物体上
2016 Loughborough Antennas & Propagation Conference (LAPC) Pub Date : 2016-11-01 DOI: 10.1109/LAPC.2016.7807480
A. P. Sohrab, Yi Huang, M. Kod, M. Hussein, Paul Carter
{"title":"Label-type 3D RFID tag mountable on metallic and non-metallic objects","authors":"A. P. Sohrab, Yi Huang, M. Kod, M. Hussein, Paul Carter","doi":"10.1109/LAPC.2016.7807480","DOIUrl":"https://doi.org/10.1109/LAPC.2016.7807480","url":null,"abstract":"A study for reducing the sensitivity of label-type UHF RFID tags to background materials is done in this paper. It is found that the capacitance in parallel to the feeding point of the tag is the most sensitive element in the circuit. The capacitance of the antenna body is also found to be an important element. The bigger antenna capacitance leads to less sensitive tag designs. Based on these findings a low profile and low cost label-type tag design is proposed. The feeding point is protected by a bottom conducting layer in a 3D design and the dipole antenna is loaded with large capacitive patches at both tips. The tag not only shows acceptable reading range on various dielectric materials but also is capable of working on challenging materials like liquid bottles and metallic objects.","PeriodicalId":253379,"journal":{"name":"2016 Loughborough Antennas & Propagation Conference (LAPC)","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129253985","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
High gain SIW-based antenna with superstrate for automotive radar applications 用于汽车雷达应用的高增益siw天线
2016 Loughborough Antennas & Propagation Conference (LAPC) Pub Date : 2016-11-01 DOI: 10.1109/LAPC.2016.7807553
Basem Aqlan, H. Vettikalladi, M. Alkanhal
{"title":"High gain SIW-based antenna with superstrate for automotive radar applications","authors":"Basem Aqlan, H. Vettikalladi, M. Alkanhal","doi":"10.1109/LAPC.2016.7807553","DOIUrl":"https://doi.org/10.1109/LAPC.2016.7807553","url":null,"abstract":"This paper presents the concept of substrate integrated waveguide (SIW) technology along with superstrate layer, which is used to design a high gain antenna for 79 GHz automotive short range radar (SRR) applications. The maximum gain of a single antenna with superstrate layer is 14.6 dBi at 79 GHz, which is higher than the gain of a classical 2 × 2 array. It is found that the gain of a single superstrate layer increases nearly 8.78 dB at 79 GHz over its SIW base antenna. The CST simulated 2:1 VSWR bandwidth with superstrate layer is from 75.9 GHz to 81 GHz (6.46 %). The antenna patterns are found to be broadside all over the frequency band of interest. Also the results are verified using another simulation software HFSS.","PeriodicalId":253379,"journal":{"name":"2016 Loughborough Antennas & Propagation Conference (LAPC)","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116866928","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
Divergence in radiation fields: Three paradoxes: Toward highly focused neuron stimulation for neurology and HCI 放射领域的分歧:三个悖论:神经病学和HCI的高度集中的神经元刺激
2016 Loughborough Antennas & Propagation Conference (LAPC) Pub Date : 2016-11-01 DOI: 10.1109/LAPC.2016.7807551
J. Fricke
{"title":"Divergence in radiation fields: Three paradoxes: Toward highly focused neuron stimulation for neurology and HCI","authors":"J. Fricke","doi":"10.1109/LAPC.2016.7807551","DOIUrl":"https://doi.org/10.1109/LAPC.2016.7807551","url":null,"abstract":"Three thought experiments demonstrate that under certain circumstances radiation fields have to be attenuated or amplified by means other than superposition in order not to violate the conservation of energy. At least one of them provides a basis for verification by real experiments. Multiplicative modulation of radiation is theoretically made possible by inserting additional terms into the source slots of the Maxwell equations. Low frequency components in modulated UWB radiation would enable the well focused stimulation of neurons for diagnostic and therapeutic purposes as well as for information transfer in human computer interfaces.","PeriodicalId":253379,"journal":{"name":"2016 Loughborough Antennas & Propagation Conference (LAPC)","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114887550","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
Design of stacked segmented ultra wide band antenna 叠置分段超宽带天线设计
2016 Loughborough Antennas & Propagation Conference (LAPC) Pub Date : 2016-11-01 DOI: 10.1109/LAPC.2016.7807608
A. Elkorany, S. Elhalafawy, A. Radwan, S. Shahid, M. d'Amico, G. Gentili
{"title":"Design of stacked segmented ultra wide band antenna","authors":"A. Elkorany, S. Elhalafawy, A. Radwan, S. Shahid, M. d'Amico, G. Gentili","doi":"10.1109/LAPC.2016.7807608","DOIUrl":"https://doi.org/10.1109/LAPC.2016.7807608","url":null,"abstract":"In this paper, a novel wide band stacked segment microstrip patch antenna (MPA) with two layered RT/Duroid is proposed. Multi-layered stacked patches are designed with rectangular dimensions, and square slots are entrenched with first patch to excite them. A parametric study of dielectric thickness and stacked center is carried out to enhance the impedance bandwidth of the proposed antenna. The antenna performance has been characterized in terms of reflection coefficient (S11), peak gain and radiation characteristics. Among different cases, thickness and locations of stacked center resulted in an impedance bandwidth of 9.3 to 19 GHz. The peak gain varies of 3dB over the operating frequency range. The antenna was simulated using Ansys HFSS v13 (Finite element method) and CST MWS (Finite Integral Method). This stacked antenna can be a suitable candidate for a variety of modern wireless and broadband applications.","PeriodicalId":253379,"journal":{"name":"2016 Loughborough Antennas & Propagation Conference (LAPC)","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125425674","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
Antenna field transformation with directive sources 带有指示源的天线场变换
2016 Loughborough Antennas & Propagation Conference (LAPC) Pub Date : 2016-11-01 DOI: 10.1109/LAPC.2016.7807571
T. Eibert
{"title":"Antenna field transformation with directive sources","authors":"T. Eibert","doi":"10.1109/LAPC.2016.7807571","DOIUrl":"https://doi.org/10.1109/LAPC.2016.7807571","url":null,"abstract":"Inverse equivalent source solutions are powerful approaches for antenna field transformations and they provide in particular very detailed diagnostic insight into the radiation behaviour of the considered antenna. Commonly such techniques work with electric and/or magnetic surface current densities, where the field observation equations are sometimes augmented by a null-field condition for the region external to the Huygens surface. The surface current densities obtained with such a null-field condition are known as Love currents and they are directly linked to the tangential electric and magnetic fields on the Huygens surface. Also, it is clear that these currents radiate in general (for convex surfaces) only away from the antenna under test (AUT) and are, therefore, very suitable for antenna diagnostics. As an approximate and inexpensive alternative to the null-field condition, we propose to work with directive surface sources, which are obtained by an impedance boundary condition linking electric and magnetic surface currents densities and by shifting the equivalent surface current densities into complex space. These directive sources are integrated into the fast irregular antenna field transformation algorithm which achieves low numerical solution complexity by utilizing multilevel fast multipole like principles. Field transformation results based on real measurement data are investigated to illustrate the performance of the directive surface sources.","PeriodicalId":253379,"journal":{"name":"2016 Loughborough Antennas & Propagation Conference (LAPC)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125910167","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 compact dual-band wide-beam microstrip antenna array 一种紧凑的双频宽波束微带天线阵列
2016 Loughborough Antennas & Propagation Conference (LAPC) Pub Date : 2016-11-01 DOI: 10.1109/LAPC.2016.7807549
Lingyu Kong, Xiaojian Xu
{"title":"A compact dual-band wide-beam microstrip antenna array","authors":"Lingyu Kong, Xiaojian Xu","doi":"10.1109/LAPC.2016.7807549","DOIUrl":"https://doi.org/10.1109/LAPC.2016.7807549","url":null,"abstract":"A compact dual-band wide-beam microstrip antenna array with shaded one-dimensional symmetric parasitic patches(SODSPP) is designed in this paper. This array consists of six X band elements, three Ku band elements and two different band feed-networks using three microstrip T-junctions with 2:1 power ratio, with wide bandwidth and low cross-polarization. The design of the 3×2, 3×1 array and SODSPP contribute to broaden beamwidth. Every two driven patches share two parasitic patches to realize miniaturization of the dual-band antenna. Simulation results show that the impedance bandwidths of X and Ku bands are 33% and 16.8%, and the beamwidths in H plane are ±20° and ±28°, respectively.","PeriodicalId":253379,"journal":{"name":"2016 Loughborough Antennas & Propagation Conference (LAPC)","volume":"91 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125162347","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
Non-foster broadband matching networks for electrically-small antennas 用于电子小天线的非培育宽带匹配网络
2016 Loughborough Antennas & Propagation Conference (LAPC) Pub Date : 2016-11-01 DOI: 10.1109/LAPC.2016.7807596
Nikolay Ivanov, Bair Buyantuev, V. Turgaliev, D. Kholodnyak
{"title":"Non-foster broadband matching networks for electrically-small antennas","authors":"Nikolay Ivanov, Bair Buyantuev, V. Turgaliev, D. Kholodnyak","doi":"10.1109/LAPC.2016.7807596","DOIUrl":"https://doi.org/10.1109/LAPC.2016.7807596","url":null,"abstract":"Design of non-Foster matching networks for monopole and loop printed antennas operating much lower their resonance frequencies are presented. Both matching networks consist of a non-Foster element (negative capacitance or negative inductance) to compensate partly the antenna reactance and a lumped-element transformer to convert the real part of the antenna impedance to 50 Ohm. The non-Foster elements are realized as transistor-based negative impedance converters. Advantages in the antenna matching bandwidth over conventional matching networks are demonstrated. Operational bandwidth of the transformer is shown to be one the main factors limiting the antenna matching bandwidth when using the non Foster matching networks under consideration.","PeriodicalId":253379,"journal":{"name":"2016 Loughborough Antennas & Propagation Conference (LAPC)","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125234182","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: 9
Development of transparent patch antenna element integrated with solar cells for Ku-band satellite applications ku波段卫星用太阳能电池集成透明贴片天线元件的研制
2016 Loughborough Antennas & Propagation Conference (LAPC) Pub Date : 2016-11-01 DOI: 10.1109/LAPC.2016.7807579
F. Nashad, S. Foti, David Smith, M. Elsdon, O. Yurduseven
{"title":"Development of transparent patch antenna element integrated with solar cells for Ku-band satellite applications","authors":"F. Nashad, S. Foti, David Smith, M. Elsdon, O. Yurduseven","doi":"10.1109/LAPC.2016.7807579","DOIUrl":"https://doi.org/10.1109/LAPC.2016.7807579","url":null,"abstract":"In this paper, a design of broadband compact microstrip meshed patch antenna integrated with solar cells for Ku-band satellite applications is presented. A Plexiglas transparent substrate is also employed to enable the light to pass through with high efficiency to illuminate the solar panel cells while the RF performance is maintained with minimal degradation. This meshed patch antenna for two-way satellite internet and TV applications at remote areas, covering the communications frequency range from 11.7GHz to 12.22GHz (downlink) and 14.0GHz to 14.5GHz (uplink) bands allocated by the ITU to the Regions 1 and 2. The effect of replacing the solid elements of a microwave suspended patch antenna with meshed element is examined. A compact flat meshed element is obtained and simulated in CST Microwave Studio and achieved the broadband width of 500 MHz in both portions and the nominal element gain is 7.47dBi downlink and 8.51 dBi uplink, suffering only by 0.23 dBi and 0.14 dBi respectively, comparing to the original suspended solid patch antenna design. The visible light transmission is found at normal incidence and an oblique angle to be approximately 87% and 80%, respectively.","PeriodicalId":253379,"journal":{"name":"2016 Loughborough Antennas & Propagation Conference (LAPC)","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123654144","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: 14
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