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CSRR-based microwave sensor for noninvasive, continuous monitoring of renal function 基于csrr的微波传感器用于无创、连续监测肾功能
2016 Loughborough Antennas & Propagation Conference (LAPC) Pub Date : 2016-11-01 DOI: 10.1109/LAPC.2016.7807584
Zhovaan Ramsaroop, Sean Rocke, Nalini Gayapersad, Jeevan Persad
{"title":"CSRR-based microwave sensor for noninvasive, continuous monitoring of renal function","authors":"Zhovaan Ramsaroop, Sean Rocke, Nalini Gayapersad, Jeevan Persad","doi":"10.1109/LAPC.2016.7807584","DOIUrl":"https://doi.org/10.1109/LAPC.2016.7807584","url":null,"abstract":"Globally, chronic kidney disease (CKD) burden healthcare systems. Current treatment systems in many countries have presented a serious socioeconomic situation for low- to middle-income countries. As such, monitoring mechanisms present a clinical need for effective diagnosis, prevention and treatment of numerous non communicable diseases, such as CKD. Non-invasive, continuous monitoring of renal function using a complementary split ring resonator (CSRR) microwave sensor confers potential benefits to meeting this clinical need. The sensor was sensitive to changes in the relative permittivity of a material under test with the electrical properties of blood, for the frequency range investigated in COMSOL Multiphysics®. The correlation of the electrical parameters with relative permittivity changes highlights the applicability of CSRRs as a sensor module for CKD monitoring.","PeriodicalId":253379,"journal":{"name":"2016 Loughborough Antennas & Propagation Conference (LAPC)","volume":"81 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":"123409138","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
Performance comparison of compact UWB antennas through multi-objective optimization 基于多目标优化的小型超宽带天线性能比较
2016 Loughborough Antennas & Propagation Conference (LAPC) Pub Date : 2016-11-01 DOI: 10.1109/LAPC.2016.7807520
S. Koziel, A. Bekasiewicz
{"title":"Performance comparison of compact UWB antennas through multi-objective optimization","authors":"S. Koziel, A. Bekasiewicz","doi":"10.1109/LAPC.2016.7807520","DOIUrl":"https://doi.org/10.1109/LAPC.2016.7807520","url":null,"abstract":"In this paper, an optimization-based procedure for performance comparison of alternative compact UWB antenna topologies is discussed. Our approach allows for fast assessment of compact antenna performance by identifying the best possible trade-offs between the antenna size and its reflection responses. Analysis of such Pareto-optimal designs obtained for various antenna topologies allows for their fair comparison, particularly in terms of the minimum size they can be designed for (assuming acceptable reflection response levels) or the best attainable reflection characteristics. The multi-objective optimization algorithm utilized in this work exploits sequential domain patching technique and variable-fidelity EM simulation models. The proposed approach is demonstrated using two topologies of compact UWB monopole antennas.","PeriodicalId":253379,"journal":{"name":"2016 Loughborough Antennas & Propagation Conference (LAPC)","volume":"49 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":"124177498","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
Integrated filtering planar dipole antenna using edge coupled feed 边缘耦合馈电集成滤波平面偶极子天线
2016 Loughborough Antennas & Propagation Conference (LAPC) Pub Date : 2016-11-01 DOI: 10.1109/LAPC.2016.7807494
Amira El‐Tokhy Ali, Yi Wang
{"title":"Integrated filtering planar dipole antenna using edge coupled feed","authors":"Amira El‐Tokhy Ali, Yi Wang","doi":"10.1109/LAPC.2016.7807494","DOIUrl":"https://doi.org/10.1109/LAPC.2016.7807494","url":null,"abstract":"The paper presents a novel uniplanar integrated filtering dipole with a second-order filtering response of enhanced frequency selectivity. The first stage of the filter is a U-shaped half-wavelength resonator, whereas the second one is the planar dipole antenna. The bandwidth of the dipole is controlled by the edge coupling between the two stages. The U-shape resonator also acts as a balun. A truncated microstrip ground plane is used as the reflector to achieve a directional radiation pattern. The measured results show a bandwidth of 21% between 4.2 GHz and 5.2 GHz with a sharper roll-off than a conventional planar dipole, and an end-fire radiation pattern.","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":"122475684","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: 4
Time domain connector extraction method for broadband measurement of symmetrical structures 宽带对称结构测量的时域连接器提取方法
2016 Loughborough Antennas & Propagation Conference (LAPC) Pub Date : 2016-11-01 DOI: 10.1109/LAPC.2016.7807537
A. Diewald, Simon Muller
{"title":"Time domain connector extraction method for broadband measurement of symmetrical structures","authors":"A. Diewald, Simon Muller","doi":"10.1109/LAPC.2016.7807537","DOIUrl":"https://doi.org/10.1109/LAPC.2016.7807537","url":null,"abstract":"In a former publication [1] the authors reported results of a connector extraction method for symmetrical structures in the frequency domain. The connector related S-Parameters are determines step-wise for each single frequency point. In this paper the connector extraction is made in the time domain for a broadband measurement. A windowing function separating reflections from different discontinuities is presented.","PeriodicalId":253379,"journal":{"name":"2016 Loughborough Antennas & Propagation Conference (LAPC)","volume":"7 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":"123539814","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
Conservation of endangered plant species using RFID tags 利用射频识别标签保护濒危植物物种
2016 Loughborough Antennas & Propagation Conference (LAPC) Pub Date : 2016-11-01 DOI: 10.1109/LAPC.2016.7807451
S. Sujanani, M. A. Ziai, J. Batchelor, D. Roberts
{"title":"Conservation of endangered plant species using RFID tags","authors":"S. Sujanani, M. A. Ziai, J. Batchelor, D. Roberts","doi":"10.1109/LAPC.2016.7807451","DOIUrl":"https://doi.org/10.1109/LAPC.2016.7807451","url":null,"abstract":"Radio Frequency Identification (RFID) tags in tamper-proof casings are proposed and tested as part of remote security systems for endangered plant species. The tag is shown to be sufficiently broadband and insensitive to the tamperproof box and underlying plant material and achieves a read range of more than 10m with a standard UHF reader system. Tests are undertaken to demonstrate the tag is readable from different elevations and azimuthal angles.","PeriodicalId":253379,"journal":{"name":"2016 Loughborough Antennas & Propagation Conference (LAPC)","volume":"44 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":"116368781","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
Higher harmonic generation: Coupling two radiating elements at two different frequencies 高谐波产生:耦合两个辐射元件在两个不同的频率
2016 Loughborough Antennas & Propagation Conference (LAPC) Pub Date : 2016-11-01 DOI: 10.1109/LAPC.2016.7807618
M. Pigeon, O. Sushko, R. Donnan, C. Parini, R. Dubrovka, T. Kreouzis
{"title":"Higher harmonic generation: Coupling two radiating elements at two different frequencies","authors":"M. Pigeon, O. Sushko, R. Donnan, C. Parini, R. Dubrovka, T. Kreouzis","doi":"10.1109/LAPC.2016.7807618","DOIUrl":"https://doi.org/10.1109/LAPC.2016.7807618","url":null,"abstract":"This paper describes how two radiating elements designed for two different resonating frequencies can be coupled to properly radiate a higher harmonic frequency. The placement of the higher frequency resonating element is chosen by considering the electric filed distribution in the lower frequency antenna. This combination establishes enhanced radiation efficiency at 300 GHz (i.e. the third harmonic of the fundamental).","PeriodicalId":253379,"journal":{"name":"2016 Loughborough Antennas & Propagation Conference (LAPC)","volume":"7 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":"115725529","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
Fast re-design of antenna structures with respect to substrate permittivity and thickness 基于衬底介电常数和厚度的天线结构快速重新设计
2016 Loughborough Antennas & Propagation Conference (LAPC) Pub Date : 2016-11-01 DOI: 10.1109/LAPC.2016.7807509
S. Koziel, A. Bekasiewicz, Q. Cheng
{"title":"Fast re-design of antenna structures with respect to substrate permittivity and thickness","authors":"S. Koziel, A. Bekasiewicz, Q. Cheng","doi":"10.1109/LAPC.2016.7807509","DOIUrl":"https://doi.org/10.1109/LAPC.2016.7807509","url":null,"abstract":"In this paper, a methodology for fast re-design of antenna structures with respect to substrate parameters has been presented. The key component of our technique is an inverse surrogate model that is constructed using reference designs representing optimum antenna geometries for selected values of the substrate permittivity and thicknesses. The surrogate returns the values of antenna dimensions corresponding to the substrate parameters of interest. For the sake of computational efficiency, the model is set up at the level of low-fidelity (coarse-discretization) EM antenna simulations and further corrected by means of a single high-fidelity reference design. The presented procedure is demonstrated using a planar dual-band dipole antenna re-designed for a target range of substrate permittivity from 2.0 to 5.0 and thickness from 0.5 mm to 1.5 mm.","PeriodicalId":253379,"journal":{"name":"2016 Loughborough Antennas & Propagation Conference (LAPC)","volume":"25 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":"116775548","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
Proposed spherical channel model capacity calculations for different MIMO antenna systems 提出了不同MIMO天线系统的球面信道模型容量计算方法
2016 Loughborough Antennas & Propagation Conference (LAPC) Pub Date : 2016-11-01 DOI: 10.1109/LAPC.2016.7807522
A. Allam, A. M. Hemdan, Steven Botros
{"title":"Proposed spherical channel model capacity calculations for different MIMO antenna systems","authors":"A. Allam, A. M. Hemdan, Steven Botros","doi":"10.1109/LAPC.2016.7807522","DOIUrl":"https://doi.org/10.1109/LAPC.2016.7807522","url":null,"abstract":"This paper presents capacity calculations for different MIMO antenna systems. The capacity calculations are applied for a new proposed channel model entitled the spherical model. The presented MIMO antenna systems are consisted of two configurations. Each configuration has four trapezoidal antennas. Configuration I is designed with and without defected ground slot. Configuration II also is designed with and without slot integrated waveguide. The DGS and the SIW structures are added in order to reduce the mutual coupling between the antennas. The two configurations differ in the mutual coupling obtained from each one, and in the geometrical shapes of the configurations with respect to the positions of the antennas relative to each other. All of the configurations are fabricated. A strong agreement between the measured and the simulated results is obtained. Matlab codes are used to depict the capacities versus the SNR at 4.96 GHz with a band of 80 MHz. The results discuss the effect of the mutual coupling and the spatial correlation on the capacity of the system using the proposed model.","PeriodicalId":253379,"journal":{"name":"2016 Loughborough Antennas & Propagation Conference (LAPC)","volume":"324 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":"116299385","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
The effects of water on an on-body monopole diversity antenna pair at 1800MHz 水对1800MHz单极分集天线对的影响
2016 Loughborough Antennas & Propagation Conference (LAPC) Pub Date : 2016-11-01 DOI: 10.1109/LAPC.2016.7807542
D. Al-Saffar, M. I. Khattak, R. Edwards
{"title":"The effects of water on an on-body monopole diversity antenna pair at 1800MHz","authors":"D. Al-Saffar, M. I. Khattak, R. Edwards","doi":"10.1109/LAPC.2016.7807542","DOIUrl":"https://doi.org/10.1109/LAPC.2016.7807542","url":null,"abstract":"This paper presents the effect of water on a pair of 1.8GHz on-body diversity monopole antennas mounted on the forearm of a sitting male static volunteer. Application of a water layer to the forearm was seen to both reduce efficiency and increase directivity leading to a slight overall increase in gain. Increased gain was shown to increase antenna correlation thereby reducing diversity gain in the antenna pair.","PeriodicalId":253379,"journal":{"name":"2016 Loughborough Antennas & Propagation Conference (LAPC)","volume":"27 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":"117100744","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 reflective capacitive impedance surface for 1.5 Tesla magnetic resonance imaging applications 一种用于1.5特斯拉磁共振成像应用的反射电容阻抗表面
2016 Loughborough Antennas & Propagation Conference (LAPC) Pub Date : 2016-11-01 DOI: 10.1109/LAPC.2016.7807531
Ismail Issa, K. L. Ford, M. Rao, J. Wild
{"title":"A reflective capacitive impedance surface for 1.5 Tesla magnetic resonance imaging applications","authors":"Ismail Issa, K. L. Ford, M. Rao, J. Wild","doi":"10.1109/LAPC.2016.7807531","DOIUrl":"https://doi.org/10.1109/LAPC.2016.7807531","url":null,"abstract":"This paper presents a reflective capacitive impedance surface combined with a radio frequency loop coil to improve the radio frequency magnetic field for 1.5 Tesla magnetic resonance imaging applications. The proposed structure is based on a miniaturized surface unit cell using an inter digital capacitance approach. Full field simulations employing an inter digital frequency selective surface shows a maximum improvement in magnetic field inside a homogeneous dielectric phantom of 170% as compared to a loop coil alone.","PeriodicalId":253379,"journal":{"name":"2016 Loughborough Antennas & Propagation Conference (LAPC)","volume":"13 2 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":"128858351","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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