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2023 International Microwave and Antenna Symposium (IMAS)最新文献

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Design and Fabrication a W-Shape Form Dual-Band Flexible Antenna For Biomedical Applications 生物医学用w型双频柔性天线的设计与制造
Pub Date : 2023-02-07 DOI: 10.1109/IMAS55807.2023.10066924
Sara Yehia Abdel Fatah, Fatma Taher, Mohammad T. Haweel, Hussam Al Hamadi, Khaled Hassan Mohamadien, M. F. A. Sree
This study suggests a dual band flexible antenna for use at 900 and 2450 MHz. With a footprint of 0.23 o, 0.120 o, and 0.0007 o, where o is the lowest resonance wavelength, the antenna is relatively tiny. The antenna is built from a straightforward geometrical structure consisting of a W-shaped serpentine structure supplied by a microstrip line and a partial ground plane utilizing the Defected Ground Structure (DGS) technology in order to achieve wide operational bandwidth. In order to boost resonance, an additional capacitor was inserted between the slots, creating a portable dual-band antenna. Several performance metrics' findings and the ones that had been measured were compared. The antenna's potential for rigid and flexible electronics is increased by its good size, bandwidth, gain, and radiation pattern.
本研究建议使用900和2450 MHz的双频柔性天线。该天线的占地面积分别为0.23 0、0.120 0和0.0007 0,其中0为最低谐振波长,相对较小。该天线采用简单的几何结构,由微带线提供的w形蛇形结构和利用缺陷接地结构(DGS)技术的部分地平面组成,以实现较宽的工作带宽。为了增强共振,在插槽之间插入了一个额外的电容器,形成了一个便携式双频天线。对几个性能指标的结果和已测量的结果进行了比较。该天线在刚性和柔性电子器件方面的潜力因其良好的尺寸、带宽、增益和辐射模式而增加。
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引用次数: 0
Highly Sensitive Bi-Transmission Line-based Sensors for Liquid Characterization 用于液体表征的高灵敏度双传输线传感器
Pub Date : 2023-02-07 DOI: 10.1109/IMAS55807.2023.10066907
Michael M. Y. R. Riad, Mariam A. Ateyya, A. R. Eldamak, A. Safwat
This work presents highly sensitive resonant sensors for liquid characterization. The proposed sensors combine multi-mode coplanar waveguide and microstrip lines in a double-layer PCB, one layer constitutes the feed while the other forms the resonator (sensing element), with a paper superstrate. Equivalent circuit models are derived, which enables the understanding of the behavior of the sensors as lossy transmission lines and, consequently, predicts the changes in the response due to different concentrations of sodium chloride. A prototype was manufactured, and the measurement results are in very good agreement with the EM simulations around the operating frequency (1.6 GHz). The sensor achieves a sensitivity of 4.2 dB between 0.01 and 0.1 mol/L.
这项工作提出了用于液体表征的高灵敏度谐振传感器。该传感器将多模共面波导和微带线结合在双层PCB板上,一层构成馈电,另一层构成谐振器(传感元件),并采用纸衬底。推导出等效电路模型,使我们能够理解传感器作为有损传输线的行为,从而预测不同浓度氯化钠引起的响应变化。制作了样机,测量结果与工作频率(1.6 GHz)附近的电磁仿真结果吻合良好。该传感器在0.01 ~ 0.1 mol/L之间的灵敏度为4.2 dB。
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引用次数: 0
Design of CPW-Fed Dual-Band Four-Element MIMO Microstrip Patch Antenna for WLAN/WiMAX Applications 用于WLAN/WiMAX应用的cpw馈电双频四元MIMO微带贴片天线设计
Pub Date : 2023-02-07 DOI: 10.1109/IMAS55807.2023.10066915
Isam Eddine Lamri, A. Mansoul
the goal of our study is to design, fabricate, and verify a dual band 4-element MIMO antenna that can address both the WLAN and the WiMAX bands. The suggested antenna is made up of two radiating patches that work together to operate in the 5.8 GHz WLAN and 3.5/5.5 GHz WiMAX bands. The four element MIMO antenna with size of 64×64 mm2 is fabricated on a 1.6 mm in thickness FR-4 sheet with a dielectric constant of 4.4 and a loss tangent of 0.02. To boost the performance of the structure in respect to operating bandwidth; a parametric study was done based on FDTD technique resulting in an optimized dual band antenna. Moreover, a four element MIMO configuration separately 50Ω-fed is considered, and the prototype is fabricated and measured using VNA. Spatial diversity is introduced in the MIMO configuration resulting in good isolation without employing the known decoupling structures and techniques. The measurements reveal that the system operates on two desired bands with a coupling of less than -15 dB between the different elements. In addition, the MIMO metrics are analyzed and found to meet the practical standards of: ECC < 0.04, DG > 9.80, -12 dB < MEG < -3 dB, TARC < -10 dB, and CCL < 0.4 bits/s/Hz over the concerned bands.
我们的研究目标是设计、制造和验证一种双频4元MIMO天线,可以同时处理WLAN和WiMAX频段。建议的天线由两个辐射片组成,它们共同工作在5.8 GHz的WLAN和3.5/5.5 GHz的WiMAX频段。在厚度为1.6 mm的FR-4薄片上制备了尺寸为64×64 mm2的四元MIMO天线,其介电常数为4.4,损耗正切为0.02。提高结构在操作带宽方面的性能;基于时域有限差分技术进行了参数化研究,得到了优化的双频天线。此外,还考虑了四元MIMO配置50Ω-fed,并使用VNA制作和测量了原型。在MIMO配置中引入空间分集,无需采用已知的解耦结构和技术即可实现良好的隔离。测量结果表明,该系统工作在两个期望的频段上,不同元件之间的耦合小于-15 dB。此外,对MIMO指标进行了分析,发现在相关频段上符合ECC < 0.04, DG > 9.80, -12 dB < MEG < -3 dB, TARC < -10 dB和CCL < 0.4 bits/s/Hz的实用标准。
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引用次数: 0
Newly Designed Antenna Platform for Transient Array Radio Telescope (TART) 新设计的瞬态阵列射电望远镜天线平台
Pub Date : 2023-02-07 DOI: 10.1109/IMAS55807.2023.10066914
Sonia Ghosh, Rikus Human, S. Kuja, O. Smirnov, T. Molteno, P. Okouma
This paper presents a brief overview of the Transient Array Radio Telescope (TART) and the improvements made on the TART structure. A novel antenna platform for the Rhodes University (RU) TART is designed using three (2.5 m) unistrut beams and two laser-cut galvanised steels. The newly assembled antenna platform offers a lot of flexibility in terms of antenna positioning and configuration. With a three-arm layout of the RU TART, an improved angular resolution of 2° 37’ 41” is achieved.
本文简要介绍了瞬态阵列射电望远镜(Transient Array Radio Telescope, TART)的概况和对其结构的改进。罗德大学(RU) TART的新型天线平台使用三根(2.5米)非支柱梁和两根激光切割镀锌钢设计。新组装的天线平台在天线定位和配置方面提供了很大的灵活性。通过RU TART的三臂布局,可以实现2°37 ' 41”的角分辨率提高。
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引用次数: 0
Capacity Enhanced High Throughput Satellite - Coded-Beams resource management strategy 容量增强型高吞吐量卫星-编码波束资源管理策略
Pub Date : 2023-02-07 DOI: 10.1109/IMAS55807.2023.10066901
Eman S. Abass, J. Halim, H. E. Hennawy
the manuscript investigates the capacity enhancement derived from the new trend of Coded-Beam High Throughput Satellite (CB-HTS) System; CB-HTS is a methodology of adoption of Direct- Sequence Code Division Multiplexing (DS-CDM) orthogonal coding as a resource allocation associated with each beam of multi-beam satellites. This system offers no spectrum reuses and there is no co-channel interference between beams as they are isolated with the code orthogonally, therefore the system throughput increases without scarifying any resources or increasing neither system complexity nor latency. The presented work uses the affordable polarization resource at the user terminal side to increase the capacity in each beam by using both vertical and horizontal polarization support with the conventional multiple accessing techniques between users in the beam. Results show the superiority of proposed scheme compared to current state of- the art in cases of practical interest.
研究了编码波束高通量卫星(CB-HTS)系统新趋势带来的容量增强;CB-HTS是采用直接序列码分复用(DS-CDM)正交编码作为多波束卫星各波束的资源分配方法。该系统不提供频谱重用,波束之间没有共信道干扰,因为它们与代码正交隔离,因此系统吞吐量增加而不会消耗任何资源,也不会增加系统复杂性和延迟。本文利用用户终端侧可负担的极化资源,在波束内用户间采用传统的多址技术,同时使用垂直和水平极化支持来增加每个波束的容量。结果表明,在实际应用中,所提出的方案优于目前的技术水平。
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引用次数: 1
A New Enhanced Design of broadband Gysel Power Divider and Combiner 一种新型宽带陀螺功率分配器和合成器的改进设计
Pub Date : 2023-02-07 DOI: 10.1109/IMAS55807.2023.10066898
Mahmoud A. Ahmed, H. N. Kheirallah, A. Eltrass, Ahmed S. I. Amar, A. Almslmany
Power combiner/divider plays a vital role in many microwave applications, particularly, in radar systems and power amplifiers. The rush order for many applications and modern technologies in radio frequency systems to be low cost and more compact is enticing more awareness. In this paper, a new power divider/combiner is introduced as one device instead of using two devices by achieving equal return loss for input and outputs ports side by side with the insertion loss. The proposed design is developed by replacing the third half wavelength Transmission Line (TL) of the traditional Gysel Power Combiner/Divider (GPCD) by a microstrip Chebyshev bandpass filter with a center frequency of 1.5 GHz to widen the operating bandwidth. The robustness of the suggested design is elucidated by examining measurement and simulation results and comparing them with other state-of-the-art designs. The proposed GPCD design provides efficient operation in the L-band with equivalent fractional bandwidth of 69 % for all S-parameters. This demonstrates that the introduced GPCD design can be efficiently utilized in wideband and low-cost microwave applications.
功率合成器/分频器在许多微波应用中起着至关重要的作用,特别是在雷达系统和功率放大器中。射频系统中的许多应用和现代技术都要求低成本和更紧凑,这吸引了更多的关注。本文介绍了一种新的功率分配器/合成器作为一个器件,而不是使用两个器件,实现了输入输出端口的回波损耗与插入损耗相等。采用中心频率为1.5 GHz的微带切比舍夫带通滤波器取代传统Gysel功率合并/分频器(GPCD)的第三半波长传输线(TL),拓宽了工作带宽。通过检查测量和仿真结果并将其与其他最先进的设计进行比较,阐明了建议设计的鲁棒性。所提出的GPCD设计在l波段提供了高效的操作,所有s参数的等效分数带宽为69%。这表明所介绍的GPCD设计可以有效地用于宽带和低成本微波应用。
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引用次数: 1
Simple Beam Switching Cylindrical Dielectric Resonator Antenna Using Helix 基于螺旋的简单波束开关圆柱介质谐振器天线
Pub Date : 2023-02-07 DOI: 10.1109/IMAS55807.2023.10066944
A. Pandey, S. K. Pathak
In this paper, a simple approach is presented toward switching the radiation beam of the Cylindrical Dielectric Resonator Antenna (CDRA) using helical wire in two directions for S-band applications. The antenna radiation pattern may be altered to focus energy in two specified directions by introducing helix while reducing gain in other undesirable directions without changing the antenna impedance bandwidth because of its structural symmetry. The investigation of the proposed beam switching CDRA is designed and simulated using electromagnetic simulation. The proposed antenna has an impedance bandwidth of 50.10% and a simulated bandwidth that ranges from 1.78 GHz to 2.97 GHz. The proposed antenna is capable to switch the beam in two directions at 2.4 GHz.
本文提出了一种利用螺旋线在两个方向上切换圆柱介质谐振器天线(CDRA)辐射束的简单方法。由于天线的结构对称性,可以在不改变天线阻抗带宽的情况下,通过引入螺旋来改变天线的辐射方向图,使能量集中在两个指定的方向上,同时减少其他不需要的方向上的增益。对所提出的波束开关CDRA进行了设计和电磁仿真。该天线阻抗带宽为50.10%,仿真带宽范围为1.78 GHz ~ 2.97 GHz。提出的天线能够在2.4 GHz的两个方向上切换波束。
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引用次数: 0
Low Profile Corrugated Horn for Minimum Side lobe Levels based on PRGW 基于PRGW的最小旁瓣电平的低轮廓波纹喇叭
Pub Date : 2023-02-07 DOI: 10.1109/IMAS55807.2023.10066945
M. Gadelrab, S. Shams, A. Sebak
Advances in wireless and satellite communications have created a demand for high-power microwave and millimeter-wave components due to cost, loss, and manufacturing complexity considerations. One of the newest and most promising guiding technologies is the Gap Waveguide, which is expected to have an effective role in mmWave and submmWave applications, not only in 5G communications but also in other future communications. In this article, we propose a corrugated grooved bow tie antenna based on PRGW to enhance the side lobe level in E and H planes. The antenna is operating from 32-36 GHz with a −10 dB matching level. The obtained side lobe level is in the range of −15 dB in both planes with 10 dB gain over the whole band of operation.
由于成本、损耗和制造复杂性的考虑,无线和卫星通信的进步创造了对高功率微波和毫米波组件的需求。缝隙波导是最新和最有前途的波导技术之一,不仅在5G通信中,而且在其他未来通信中,它有望在毫米波和亚毫米波应用中发挥有效作用。在本文中,我们提出了一种基于PRGW的波纹沟槽弓形结天线,以提高E和H平面的旁瓣电平。天线工作在32ghz ~ 36ghz频段,匹配电平为−10db。在整个工作频带内,得到的副瓣电平在−15 dB范围内,增益为10 dB。
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引用次数: 0
High Sensitive Measurement Sensor for Industrial Hydraulic Cylinder Stroke Based on Fabry-Pérot Optical Interferometer 基于fabry - p<s:1>光学干涉仪的工业液压缸行程高灵敏度测量传感器
Pub Date : 2023-02-07 DOI: 10.1109/IMAS55807.2023.10066938
Amir R. Ali, Mariam Tarek, M. Lokma, Nabil Eid, T. S. Eldin
This paper presents an optical sensing technique based on a Fabry-Pérot interferometer can be used to measure the stroke of an industrial hydraulic cylinder by detecting changes in the distance between the cylinder's piston and the interferometer's mirrors. The proposed cylinder stroke sensor's Faber-Pérot cavity is created by pair or partially transmitted mirrors with reflectivity up to ($mathrm{R}=0.95$) to make the signal has a high-fineness interference patterns. As the piston moves, it changes the distance between the mirrors, which in turn changes the resonant cavity's length and the wavelength of the light that is amplified or suppressed. By measuring this change in wavelength, the sensor can determine the piston's position and thus the cylinder's stroke. The results demonstrate that the new stroke monitoring sensor has a free spectral range (FSR) up to 0.58GHz with bandwidth equal to ∼28.36MHz with total resolution for the cavity spacing up to 10nm with 33% peak transmission.
本文提出了一种基于法布里-普氏干涉仪的光学传感技术,通过检测缸活塞与干涉仪反射镜之间的距离变化来测量工业液压缸的行程。所提出的气缸行程传感器的faber - p谐振腔是由反射率高达($ mathm {R}=0.95$)的双或部分透射镜形成的,使信号具有高精细度的干涉图样。当活塞运动时,它会改变镜子之间的距离,从而改变谐振腔的长度和被放大或抑制的光的波长。通过测量波长的变化,传感器可以确定活塞的位置,从而确定气缸的行程。结果表明,新型冲程监测传感器的自由频谱范围(FSR)高达0.58GHz,带宽为~ 28.36MHz,在腔间距达10nm的情况下,总分辨率为33%的峰值透射率。
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引用次数: 0
A Multi-Megawatt Range, Dual-Band Waveguide Antenna System 一种多兆瓦范围双频波导天线系统
Pub Date : 2023-02-07 DOI: 10.1109/IMAS55807.2023.10066919
A. Banelli, Nouf AlEissaee, M. Almansoori, Hamad Alyahyaee, Felix Cabrera Vega, C. Kasmi
This paper presents a compact, dual-band high-power antenna system, operating in L-band at 1.3GHz -2.5 MW and S-band 3GHz - 5.0 MW. The design consists of a wide band corrugated horn antenna and a dual-band waveguide combiner. Numerical simulations of the S-parameters of the combiner and the radiation pattern of the antenna are presented. The radiator demonstrates good performance in terms of Return Loss, isolation, and radiation at both frequencies of operation. The resulting system is compact and can be manufactured by standard CNC techniques or metallic 3D printing.
本文提出了一种紧凑的双频大功率天线系统,工作在1.3GHz -2.5 MW的l波段和3GHz - 5.0 MW的s波段。该设计由宽带波纹喇叭天线和双频波导组合器组成。对合成器的s参数和天线的辐射方向图进行了数值模拟。在两个工作频率下,散热器在回波损耗、隔离和辐射方面表现出良好的性能。由此产生的系统结构紧凑,可以通过标准CNC技术或金属3D打印制造。
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引用次数: 1
期刊
2023 International Microwave and Antenna Symposium (IMAS)
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