2019 Antenna Measurement Techniques Association Symposium (AMTA)最新文献_第4页

Use of OTA System Performance Metrics in the Design & Optimization of CATRs for 5G Testing OTA系统性能指标在5G测试catr设计与优化中的应用

2019 Antenna Measurement Techniques Association Symposium (AMTA) Pub Date : 2019-10-01 DOI: 10.23919/AMTAP.2019.8906455

S. Gregson, C. Parini

引用次数: 6

Waveguide-integrated Rydberg Atom-based RF Field Detector for Near-field Antenna Measurements 基于波导集成Rydberg原子的近场天线测量射频场探测器

2019 Antenna Measurement Techniques Association Symposium (AMTA) Pub Date : 2019-10-01 DOI: 10.23919/AMTAP.2019.8906452

M. Simons, Abdulaziz H. Haddab, J. Gordon

引用次数: 2

Comparative Testing of Devices in a Spherical Near Field System and Plane Wave Generator 球面近场系统与平面波发生器中器件的比较测试

2019 Antenna Measurement Techniques Association Symposium (AMTA) Pub Date : 2019-10-01 DOI: 10.23919/AMTAP.2019.8906292

F. Scattone, D. Šekuljica, A. Giacomini, F. Saccardi, A. Scannavini, L. Foged, E. Kaverine, N. Gross, P. Iversen

{"title":"Comparative Testing of Devices in a Spherical Near Field System and Plane Wave Generator","authors":"F. Scattone, D. Šekuljica, A. Giacomini, F. Saccardi, A. Scannavini, L. Foged, E. Kaverine, N. Gross, P. Iversen","doi":"10.23919/AMTAP.2019.8906292","DOIUrl":"https://doi.org/10.23919/AMTAP.2019.8906292","url":null,"abstract":"The Plane Wave Generator (PWG) is an array of elements generating an approximately plane wave over a finite volume in the test area called Quiet Zone (QZ). The plane wave condition can be achieved in close proximity to the array with suitably optimized complex coefficients. The PWG thus achieve far-field testing conditions in a manner similar to the Compact Antenna Test Range (CATR) but with a reduced distance to the QZ [1–2]. As a complete system the PWG has the advantage of reduced physical size compared to the a CATR with equivalent testing capabilities, in particular at lower frequencies. In [3–4], the concept of a high performance, dual polarized PWG supporting up to 1:10 bandwidth was presented. A prototype of a dual polarized PWG has been designed, manufactured and tested in the 600MHz to 6GHz frequency range.This paper presents the initial verification of the prototype PWG. The testing is performed using a representative analog beam forming network with narrow bandwidth. The QZ uniformity of the PWG is verified by spherical near-field measurements and back-propagation. The peak gain of a low directivity antenna is measured at different distances in the QZ and compared to reference measurements in a spherical near-field system. The aim of the comparison is to access the measurement accuracy of the PWG.","PeriodicalId":339768,"journal":{"name":"2019 Antenna Measurement Techniques Association Symposium (AMTA)","volume":"22 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":"126199714","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: 11

Reduced Aperture Flanged Rectangular Waveguide Probe for Measurement of Conductor Backed Uniaxial Materials 用于测量导体背衬单轴材料的小孔径法兰矩形波导探头

2019 Antenna Measurement Techniques Association Symposium (AMTA) Pub Date : 2019-10-01 DOI: 10.23919/AMTAP.2019.8906429

A. Brooks, M. Havrilla

引用次数: 1

Personal Near-field System 1987, Radio Camera 2019 个人近场系统1987，无线电相机2019

2019 Antenna Measurement Techniques Association Symposium (AMTA) Pub Date : 2019-10-01 DOI: 10.23919/AMTAP.2019.8906423

D. Slater

{"title":"Personal Near-field System 1987, Radio Camera 2019","authors":"D. Slater","doi":"10.23919/AMTAP.2019.8906423","DOIUrl":"https://doi.org/10.23919/AMTAP.2019.8906423","url":null,"abstract":"In 1987 the author built the world's first Personal Near-field antenna measurement System (PNS). This led to the formation of Nearfield Systems Inc. (NSI) a company that became a major manufacturer of commercial near-field antenna measurement systems. After leaving NSI in 2015 several new personal antenna measurement tools were built including a modern updated PNS. The new PNS consists of a portable XY scanner, a hand held microwave analyzer and a laptop computer running custom software. The PNS was then further generalized into a modular electromagnetic field imaging tool called \"Radio Camera\". The Radio Camera measures electro-magnetic fields as a n-dimensional function of swept independent parameters. The multidimensional data sets are processed with geometric and spectral transformations and then visualized. This paper provides an overview of the new PNS and Radio Camera, discusses operational considerations, and compares it with the technology of the original 1987 PNS. Today it is practical for companies, schools and individuals to build low-cost personal antenna measurement systems that are fully capable of meeting modern industry measurement standards. These systems can be further enhanced to explore and visualize electromagnetic fields in new and interesting ways.","PeriodicalId":339768,"journal":{"name":"2019 Antenna Measurement Techniques Association Symposium (AMTA)","volume":"28 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":"131167029","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

Near-Field Techniques for Millimeter-Wave Antenna Array Calibration 毫米波天线阵列标定的近场技术

2019 Antenna Measurement Techniques Association Symposium (AMTA) Pub Date : 2019-10-01 DOI: 10.23919/AMTAP.2019.8906415

Gerhard F. Hamberger, C. Rowell, B. Derat

引用次数: 3

Recent Changes to the IEEE std 1502 Recommended Practice for Radar Cross-Section Test Procedures 最新修订的IEEE标准1502雷达截面测试程序推荐实践

2019 Antenna Measurement Techniques Association Symposium (AMTA) Pub Date : 2019-10-01 DOI: 10.23919/AMTAP.2019.8906289

E. Mokole, L. Foged, V. Rodriguez, J. Fordham, V. Monebhurrun

{"title":"Recent Changes to the IEEE std 1502 Recommended Practice for Radar Cross-Section Test Procedures","authors":"E. Mokole, L. Foged, V. Rodriguez, J. Fordham, V. Monebhurrun","doi":"10.23919/AMTAP.2019.8906289","DOIUrl":"https://doi.org/10.23919/AMTAP.2019.8906289","url":null,"abstract":"Radar scattering is typically represented as the RCS of the test object. The term RCS evolved from the basic metric for radar scattering: the ratio of the power scattered from an object in units of power per solid angle (steradians) normalized to the plane-wave illumination in units of power per unit area. The RCS is thus given in units of area (or effective cross-sectional area of the target, hence the name). Note that the RCS of the test object is a property of the test object alone; it is neither a function of the radar system nor the distance between the radar and the test object, if the object is in the far field. Because the RCS of a target can have large amplitude variation in frequency and angle, it is expressed in units of decibels with respect to a square meter and is abbreviated as dBsm (sometimes DBSM or dBm2). In terms of this definition, the RCS of a radar target is a scalar ratio of powers. If the effects of polarization and phase are included, the scattering can be expressed as a complex polarimetric scattering (CPS) matrix. The measurement of the RCS of a test object requires the test object to be illuminated by an electromagnetic plane wave and the resultant scattered signal to be observed in the far field. After calibration, this process yields the RCS of the test object in units of area, or the full scattering matrix as a set of complex scattering coefficients.This paper describes the planned upgrades to the old IEEE Std 1502™-2007 IEEE Recommended Practice for Radar Cross-Section Test Procedures [1]. The new standard will reflect the recent improvements in numerical tools, measurement technology and uncertainty estimates in the past decade.","PeriodicalId":339768,"journal":{"name":"2019 Antenna Measurement Techniques Association Symposium (AMTA)","volume":"16 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":"115265826","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: 6

A Review of the CW-Ambient Technique for Measuring G/T in a Planar Near-Field Antenna Range 平面近场天线测量G/T的微波环境技术研究进展

2019 Antenna Measurement Techniques Association Symposium (AMTA) Pub Date : 2019-10-01 DOI: 10.23919/AMTAP.2019.8906350

R. Cutshall, B. Walkenhorst, J. Dobbins, Jacob Freking, B. Williams

{"title":"A Review of the CW-Ambient Technique for Measuring G/T in a Planar Near-Field Antenna Range","authors":"R. Cutshall, B. Walkenhorst, J. Dobbins, Jacob Freking, B. Williams","doi":"10.23919/AMTAP.2019.8906350","DOIUrl":"https://doi.org/10.23919/AMTAP.2019.8906350","url":null,"abstract":"Techniques for measuring G/T have been previously presented at AMTA; however, there are very few papers that discuss how to measure G/T in a near-field antenna range. One recent paper discussed such a method and gave a brief description within the larger context of satellite payload testing [1]. The paper’s treatment of G/T was necessarily brief and gives rise to several questions in relation to the proposed method. Other papers that treated this topic required the antenna aperture to be separable from the back-end electronics, which may not be possible in all cases [2–3]. In this paper, we discuss in great detail a slightly modified version of the G/T measurement method presented in [1]. A signal and noise power diagram is presented that can be useful for understanding how system signal-to-noise ratio (SNR) relates to G/T, and a few common misconceptions concerning the topic of G/T are addressed. The CW-Ambient technique for computing G/T of a Unit Under Test (UUT) from measurements in a planar near-field system is described in detail, and a list of assumptions inherent to the CW-Ambient technique is presented. Finally, the validity of the CW-Ambient technique is assessed by analyzing measured data collected from a separable UUT.","PeriodicalId":339768,"journal":{"name":"2019 Antenna Measurement Techniques Association Symposium (AMTA)","volume":"44 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":"128266283","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

AMTA 2019 Cover Page AMTA 2019封面

2019 Antenna Measurement Techniques Association Symposium (AMTA) Pub Date : 2019-10-01 DOI: 10.23919/amtap.2019.8906501

引用次数: 0

On Wacker’s Essential Equation in the Extrapolation Measurement Technique 论外推测量技术中的瓦克基本方程

2019 Antenna Measurement Techniques Association Symposium (AMTA) Pub Date : 2019-10-01 DOI: 10.23919/AMTAP.2019.8906417

A. Yuffa

引用次数: 2