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2016 Loughborough Antennas & Propagation Conference (LAPC)最新文献

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A low sidelobe multibeam slot array antenna fed by rotman lens 一种采用罗特曼透镜馈电的低旁瓣多波束缝隙阵列天线
Pub Date : 2016-11-01 DOI: 10.1109/LAPC.2016.7807502
Yi Liu, Hu Yang, Denghui Huang, Jiang Zhu
A new type of compact multibeam longitudinal slot array antenna fed by Rotman lens in composite construction of microstrip and substrate integrated waveguide (SIW) technology is proposed for mobile satellite communications. The antenna is constructed in the form of two layers, which is a highly integrated approach to reducing the size. A novel parallel-coupled SIW slot coupler is designed to connect the Rotman lens and the slot array, also control the coupled power to follow a tapered distribution to achieve a low sidelobe for all beams. The antenna operates at 10.0 GHz and the Rotman Lens, as the beamforming network, can generate 7 beams over an angular sector of ±35° with 3-dB beamwidth in the azimuthal plane. The simulated results show that sidelobe level is lower than -21 dB for the central beam and better than -16 dB for the edge beams.
提出了一种新型的微带与基片集成波导复合结构的罗特曼透镜馈电多波束纵向缝隙阵列天线,用于移动卫星通信。天线以两层的形式构造,这是一种高度集成的减小尺寸的方法。设计了一种新型的平行耦合SIW槽耦合器,用于连接罗特曼透镜和槽阵列,并控制耦合功率遵循锥形分布,以实现所有光束的低旁瓣。天线工作在10.0 GHz,罗特曼透镜作为波束形成网络,可以在±35°的角扇形上产生7个波束,在方位面上波束宽度为3db。仿真结果表明,中心波束的旁瓣电平低于-21 dB,边缘波束的旁瓣电平优于-16 dB。
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引用次数: 3
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
Pub Date : 2016-11-01 DOI: 10.1109/LAPC.2016.7807513
C. Sanchez-Cabello, L. Inclán-Sánchez, J. Vazquez-Roy, E. Rajo-Iglesias
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.
提出了一种工作在x波段的非接触、直列、宽带、低损耗微带到沟槽波导的转换。工作原理是通过近场电磁耦合将电磁场从SIW转换为脊隙波导模式。这是有利的,因为所提出的解决方案避免了在SIW和波导部件之间使用金属接触。此外,基于超材料的缝隙波导技术为集成MMIC放大器提供了无谐振封装解决方案。这是第一次设计同时提供活动组件封装的转换。由于目前测试设备的限制,我们的设备只能在x波段工作,但它可以扩展到毫米波频率甚至更高。
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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
Pub Date : 2016-11-01 DOI: 10.1109/LAPC.2016.7807480
A. P. Sohrab, Yi Huang, M. Kod, M. Hussein, Paul Carter
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.
本文对降低标签型超高频RFID标签对背景材料的敏感性进行了研究。研究发现,与标签馈电点平行的电容是电路中最敏感的元件。天线体的电容也是一个重要的因素。较大的天线电容导致较不敏感的标签设计。基于这些发现,提出了一种低姿态、低成本的标签式标签设计。在3D设计中,馈电点由底部导电层保护,偶极子天线在两端都加载了大的电容贴片。该标签不仅在各种介电材料上显示可接受的读取范围,而且还能够在液体瓶和金属物体等具有挑战性的材料上工作。
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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
Pub Date : 2016-11-01 DOI: 10.1109/LAPC.2016.7807553
Basem Aqlan, H. Vettikalladi, M. Alkanhal
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.
本文提出了衬底集成波导(SIW)技术的概念,并将其应用于79ghz汽车近程雷达(SRR)高增益天线的设计。在79 GHz时,单天线的最大增益为14.6 dBi,高于经典的2 × 2阵列的增益。研究发现,在79 GHz时,单层叠加层的增益比SIW基天线增加了近8.78 dB。CST模拟的带上层2:1驻波比带宽为75.9 GHz ~ 81 GHz(6.46%)。发现天线方向图在所有感兴趣的频带上都是宽边的。并利用仿真软件HFSS对结果进行了验证。
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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
Pub Date : 2016-11-01 DOI: 10.1109/LAPC.2016.7807551
J. Fricke
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.
三个思想实验表明,在某些情况下,为了不违反能量守恒,必须用叠加以外的方法减弱或放大辐射场。其中至少有一个为实际实验的验证提供了基础。通过在麦克斯韦方程组的源槽中插入附加项,理论上可以实现辐射的乘法调制。调制的超宽带辐射中的低频成分可以实现对神经元的良好聚焦刺激,用于诊断和治疗目的以及人机界面的信息传递。
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引用次数: 0
Design of stacked segmented ultra wide band antenna 叠置分段超宽带天线设计
Pub Date : 2016-11-01 DOI: 10.1109/LAPC.2016.7807608
A. Elkorany, S. Elhalafawy, A. Radwan, S. Shahid, M. d'Amico, G. Gentili
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.
提出了一种新型的双层RT/Duroid宽带叠层微带贴片天线(MPA)。设计了矩形尺寸的多层堆叠贴片,并在第一块贴片上嵌入方形槽以激发它们。为了提高天线的阻抗带宽,对介质厚度和堆叠中心进行了参数化研究。从反射系数(S11)、峰值增益和辐射特性等方面对天线性能进行了表征。在不同情况下,堆叠中心的厚度和位置导致阻抗带宽为9.3 ~ 19 GHz。峰值增益在工作频率范围内变化3dB。采用Ansys HFSS v13(有限元法)和CST MWS(有限积分法)对天线进行仿真。这种堆叠天线可以成为各种现代无线和宽带应用的合适候选者。
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引用次数: 1
Antenna field transformation with directive sources 带有指示源的天线场变换
Pub Date : 2016-11-01 DOI: 10.1109/LAPC.2016.7807571
T. Eibert
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.
逆等效源解是天线场变换的有力方法,它们特别提供了对所考虑天线的辐射行为的非常详细的诊断见解。通常这种技术适用于电和/或磁表面电流密度,其中场观测方程有时被惠更斯表面外部区域的零场条件所增强。在这种零场条件下获得的表面电流密度被称为洛夫电流,它们与惠更斯表面的切向电场和磁场直接相关。此外,很明显,这些电流通常(对于凸表面)只辐射远离被测天线(AUT),因此非常适合天线诊断。作为零场条件的一种近似且廉价的替代方案,我们建议使用指示表面源,指示表面源是通过连接电和磁表面电流密度的阻抗边界条件以及通过将等效表面电流密度转移到复空间而获得的。将这些指令源集成到快速不规则天线场变换算法中,利用多层快速多极原理实现了较低的数值求解复杂度。研究了基于实际测量数据的场变换结果,以说明指示面光源的性能。
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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
Pub Date : 2016-11-01 DOI: 10.1109/LAPC.2016.7807549
Lingyu Kong, Xiaojian Xu
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.
设计了一种紧凑的带阴影一维对称寄生贴片的双频宽波束微带天线阵列。该阵列由6个X波段单元、3个Ku波段单元和2个不同波段馈电网络组成,采用3个微带t结,功率比为2:1,具有带宽宽、交叉极化低的特点。3×2、3×1阵列和SODSPP的设计有助于提高波束宽度。每两个驱动贴片共用两个寄生贴片,实现了双频天线的小型化。仿真结果表明,X和Ku波段的阻抗带宽分别为33%和16.8%,H平面的波束宽度分别为±20°和±28°。
{"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
Pub Date : 2016-11-01 DOI: 10.1109/LAPC.2016.7807596
Nikolay Ivanov, Bair Buyantuev, V. Turgaliev, D. Kholodnyak
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.
介绍了低谐振频率单极子和环形印刷天线的非福斯特匹配网络设计。这两种匹配网络都由一个非福斯特元件(负电容或负电感)和一个集总元件变压器组成,前者部分补偿天线电抗,后者将天线阻抗的实部转换为50欧姆。非福斯特元件实现为基于晶体管的负阻抗变换器。与传统匹配网络相比,该网络在天线匹配带宽方面具有优势。在考虑非福斯特匹配网络时,变压器的工作带宽是限制天线匹配带宽的主要因素之一。
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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
Pub Date : 2016-11-01 DOI: 10.1109/LAPC.2016.7807579
F. Nashad, S. Foti, David Smith, M. Elsdon, O. Yurduseven
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.
本文提出了一种用于ku波段卫星的太阳能电池集成宽带紧凑型微带网格贴片天线的设计方案。还采用了有机玻璃透明基板,以使光能够高效地通过以照亮太阳能电池板电池,同时保持射频性能最小的退化。这种网状贴片天线用于偏远地区的双向卫星互联网和电视应用,覆盖国际电联分配给1区和2区的11.7GHz至12.22GHz(下行)和14.0GHz至14.5GHz(上行)频段的通信频率范围。研究了用网格单元代替微波悬置贴片天线的实体单元的效果。在CST Microwave Studio中获得了紧凑的平面网格单元并进行了仿真,两部分的宽带宽度均达到500 MHz,单元的名义下行增益为7.47dBi,上行增益为8.51 dBi,与原来的悬挂式固体贴片天线设计相比,分别减少了0.23 dBi和0.14 dBi。可见光在正入射和斜入射时的透射率分别约为87%和80%。
{"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
期刊
2016 Loughborough Antennas & Propagation Conference (LAPC)
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