2019 Antenna Measurement Techniques Association Symposium (AMTA)最新文献

Feasibility of Coaxial Resonators for Permittivity Measurements of Pressurized Gases 同轴谐振器测量加压气体介电常数的可行性

2019 Antenna Measurement Techniques Association Symposium (AMTA) Pub Date : 2019-10-01 DOI: 10.23919/AMTAP.2019.8906304

J. Alvarez

引用次数: 1

EMC Measurement System Based on Software Defined Radio and Diagnostic Techniques 基于软件无线电和诊断技术的电磁兼容测量系统

2019 Antenna Measurement Techniques Association Symposium (AMTA) Pub Date : 2019-10-01 DOI: 10.23919/AMTAP.2019.8906444

R. T. Sánchez, M. S. Castañer, L. Foged, D. Gray

引用次数: 3

Portable Laser Guided Robotic Metrology System 便携式激光制导机器人计量系统

2019 Antenna Measurement Techniques Association Symposium (AMTA) Pub Date : 2019-10-01 DOI: 10.23919/AMTAP.2019.8906337

P. Slater, J. Downey, M. Piasecki, Bryan L. Schoenholz

引用次数: 5

Combination of Spherical and Planar Scanning for Phaseless Near-Field Antenna Measurements 球面与平面相结合的无相近场天线测量方法

2019 Antenna Measurement Techniques Association Symposium (AMTA) Pub Date : 2019-10-01 DOI: 10.23919/AMTAP.2019.8906466

F. R. Varela, Belén Galocha Iraguen, M. S. Castañer, J. F. Álvarez, M. Mattes, O. Breinbjerg

{"title":"Combination of Spherical and Planar Scanning for Phaseless Near-Field Antenna Measurements","authors":"F. R. Varela, Belén Galocha Iraguen, M. S. Castañer, J. F. Álvarez, M. Mattes, O. Breinbjerg","doi":"10.23919/AMTAP.2019.8906466","DOIUrl":"https://doi.org/10.23919/AMTAP.2019.8906466","url":null,"abstract":"The two scans phaseless technique is a well-known procedure for the characterization of antennas on near-field ranges without need of measuring the phase. Amplitude information over two surfaces compensates for the lack of phase reference. In this paper we propose the combination of spherical and planar surfaces for the application of the two scans technique, together with the application of Wirtinger Flow, a state-of-the art phase retrieval algorithm with high convergence guarantees. The use of different types of surface adds additional information about the field’s degrees of freedom, allowing for smaller separation between acquisition surfaces as compared with the 2-sphere techniques. In addition, an initial estimation for the phase is not required. The phase retrieval process is formulated in terms of the Spherical Wave Expansion (SWE) of the antenna under test. The SWE-to-PWE (Plane Wave Expansion) is utilized in order to process the amplitude field on the planar surface. Results for simulated and measured near-field data are shown to demonstrate the potential capabilities of the proposed technique.","PeriodicalId":339768,"journal":{"name":"2019 Antenna Measurement Techniques Association Symposium (AMTA)","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123802644","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

Non-contact Characterization of Antenna Impedance, Gain and Pattern through Open-Fixture Network Calibration 通过开放夹具网络校准天线阻抗、增益和方向图的非接触特性

2019 Antenna Measurement Techniques Association Symposium (AMTA) Pub Date : 2019-10-01 DOI: 10.23919/AMTAP.2019.8906312

Seckin Sahin, N. Nahar, K. Sertel

{"title":"Non-contact Characterization of Antenna Impedance, Gain and Pattern through Open-Fixture Network Calibration","authors":"Seckin Sahin, N. Nahar, K. Sertel","doi":"10.23919/AMTAP.2019.8906312","DOIUrl":"https://doi.org/10.23919/AMTAP.2019.8906312","url":null,"abstract":"We present a novel, non-contact characterization technique for simultaneous characterization of conventional antenna parameters, including the antenna port input impedance, antenna gain and its radiation pattern, without requiring a network analyzer connection to the antenna port. The test antenna and the network analyzer are considered as a 2-port open-air fixture whose network representation corresponds to the desired antenna parameters. The unknown network parameters of the 2-port open-air fixture are determined via a novel calibration process using 4 offset-short termination standards. The error parameters determined by the calibration are then related to the test antenna port impedance and its gain as a function of frequency. Furthermore, the radiation pattern of the test antenna can also be characterized using measured reflection coefficient at the network analyzer port for two offset-short terminations of the test antenna port, while rotating the test antenna over the desired angular range. This novel technique is particularly attractive for installed-antenna applications where an active connection to the test antenna port is either difficult or undesirable, such as on-chip antennas and implanted antennas, to name a few. To demonstrate the efficacy our new method, we present the measured impedance, gain and radiation pattern of a diagonal-horn antenna operating over 360–450 GHz, and a lens-integrated planar butterfly antenna for the 220–325GHz band.","PeriodicalId":339768,"journal":{"name":"2019 Antenna Measurement Techniques Association Symposium (AMTA)","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132476098","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

Influence of the Phase Uncertainty in Spherical Wave Expansion in the Millimeter-Wave Range 毫米波范围内球面波膨胀中相位不确定度的影响

2019 Antenna Measurement Techniques Association Symposium (AMTA) Pub Date : 2019-10-01 DOI: 10.23919/AMTAP.2019.8906297

A. Polaczek, T. M. Gemmer, D. Heberling

引用次数: 0

Standard Definitions of Terms for Antennas and Radio Wave Propagation 天线和无线电波传播术语的标准定义

2019 Antenna Measurement Techniques Association Symposium (AMTA) Pub Date : 2019-10-01 DOI: 10.23919/AMTAP.2019.8906435

V. Monebhurrun

引用次数: 5

Method-of-Moments Modeling of Conducting Objects within the Fast Irregular Antenna Field Transformation Algorithm 快速不规则天线场变换算法中导电物体的矩量建模方法

2019 Antenna Measurement Techniques Association Symposium (AMTA) Pub Date : 2019-10-01 DOI: 10.23919/AMTAP.2019.8906355

J. Kornprobst, A. Paulus, T. Eibert, R. A. Mauermayer

引用次数: 4

Ka-Band Microstrip Patch array Antenna for Satellite Communication 卫星通信ka波段微带贴片阵列天线

2019 Antenna Measurement Techniques Association Symposium (AMTA) Pub Date : 2019-10-01 DOI: 10.23919/AMTAP.2019.8906422

Shahin Salarian, D. Mirshekar-Syahkal

引用次数: 3

Extraction of Magneto-Dielectric Properties from Metal-Backed Free-Space Reflectivity 从金属背衬自由空间反射率提取磁介电性质

2019 Antenna Measurement Techniques Association Symposium (AMTA) Pub Date : 2019-10-01 DOI: 10.23919/AMTAP.2019.8906370

R. Geryak, J. Schultz

{"title":"Extraction of Magneto-Dielectric Properties from Metal-Backed Free-Space Reflectivity","authors":"R. Geryak, J. Schultz","doi":"10.23919/AMTAP.2019.8906370","DOIUrl":"https://doi.org/10.23919/AMTAP.2019.8906370","url":null,"abstract":"Intrinsic magnetic and dielectric properties of magneto-dielectric composites are typically determined at microwave frequencies with both transmission and reflection data. An iterative method, such as root-finding, is often used to extract the properties in a frequency-by-frequency basis. In some situations, materials may be manufactured on a metal substrate that prevents transmission data from being obtained. This happens when the materials are too fragile or too strongly bonded to the substrate for removal and must be characterized with the metal substrate in place. This paper compares two different free-space extraction algorithms, developed for the simultaneous extraction of complex permittivity and permeability from metal-backed reflection. One of the algorithms relies on reflection measurements of the same material with two known thicknesses. The second method takes advantage of wide bandwidth measurements to fit the reflection to analytical models (e.g. Debye). The accuracy of these methods are evaluated and the stability criteria for the techniques will be discussed, as well as the tolerance of the techniques to various measurement errors.","PeriodicalId":339768,"journal":{"name":"2019 Antenna Measurement Techniques Association Symposium (AMTA)","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134423921","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