2019 Antenna Measurement Techniques Association Symposium (AMTA)最新文献_第6页

Measurement-Error Controlled Iterative Least-Squares Solutions of Inverse Field Transformation Problems 反场变换问题的测量误差控制迭代最小二乘解

2019 Antenna Measurement Techniques Association Symposium (AMTA) Pub Date : 2019-10-01 DOI: 10.23919/AMTAP.2019.8906459

J. Kornprobst, J. Knapp, O. Neitz, T. Eibert

引用次数: 2

CATR Quiet Zone Depth Variation CATR安静区深度变化

2019 Antenna Measurement Techniques Association Symposium (AMTA) Pub Date : 2019-10-01 DOI: 10.23919/AMTAP.2019.8906432

Marion C. Baggett, B. Walkenhorst

{"title":"CATR Quiet Zone Depth Variation","authors":"Marion C. Baggett, B. Walkenhorst","doi":"10.23919/AMTAP.2019.8906432","DOIUrl":"https://doi.org/10.23919/AMTAP.2019.8906432","url":null,"abstract":"The traditional characterization of the quiet zone for a CATR is to perform field probe scans perpendicular to the range axis at one or more depths of the quiet zone, usually front, middle and back. There is usually no attempt to compare the peak signals across the field probe scans. In recent years, users of CATRs have been using these devices at lower and lower frequencies, sometimes below the lowest frequency that provides the specified performance for the CATR. It is recognized that as a CATR is used at lower and lower frequencies compared to its optics, the quiet zone quality will degrade. The purpose of this study was to create a quiet zone depth variation model to characterize the variation, particularly for low frequencies. The model was to treat the CATR as an antenna aperture and apply a power density versus distance model. It is well known that the extreme near field of an aperture is oscillatory at distances up to approximately 10% of the far-field distance, at which point the power density begins to follow the Fraunhofer approximation. The optics of a CATR place the quiet zone well within the oscillatory zone, indicating that the field will vary through the depth of the quiet zone. This variation will decrease with increasing frequency as the far-field distance for the CATR increases with frequency. The model has been compared to a simulation in GRASP and experimental data collected on a CATR.","PeriodicalId":339768,"journal":{"name":"2019 Antenna Measurement Techniques Association Symposium (AMTA)","volume":"40 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":"131583907","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

Experimental Verification of 3D Metal Printed Dual Circular-Polarized Horn Antenna at V-Band v波段金属3D打印双圆极化喇叭天线的实验验证

2019 Antenna Measurement Techniques Association Symposium (AMTA) Pub Date : 2019-10-01 DOI: 10.23919/AMTAP.2019.8906474

Ningning Luo, Ghanshyam Mishra, S. Sharma, Xinhua Yu

引用次数: 6

Experimental Validation of a Non-Redundant NF-FF Transformation for Long AUTs Mounted in Offset Configuration in a Spherical NF Facility 球面NF设施中长aut偏移配置非冗余NF- ff变换的实验验证

2019 Antenna Measurement Techniques Association Symposium (AMTA) Pub Date : 2019-10-01 DOI: 10.23919/AMTAP.2019.8906318

F. D’Agostino, F. Ferrara, C. Gennarelli, R. Guerriero, M. Migliozzi

引用次数: 0

On the Minimum Range Length for Performing Accurate Direct Far-Field Over-the-Air Measurements 关于执行精确的直接远场空中测量的最小范围长度

2019 Antenna Measurement Techniques Association Symposium (AMTA) Pub Date : 2019-10-01 DOI: 10.23919/AMTAP.2019.8906460

B. Derat, Gerhard F. Hamberger, Fabian Michaelsen

{"title":"On the Minimum Range Length for Performing Accurate Direct Far-Field Over-the-Air Measurements","authors":"B. Derat, Gerhard F. Hamberger, Fabian Michaelsen","doi":"10.23919/AMTAP.2019.8906460","DOIUrl":"https://doi.org/10.23919/AMTAP.2019.8906460","url":null,"abstract":"Over-the-air (OTA) performance evaluation requires large investments in anechoic environments. The question of minimizing the test distance is hence critical, and even more in this time where millimeter-wave technologies are about to be largely deployed in 5G devices. A recent publication has identified that direct far-field measurements can be accurately carried out at a much shorter range length than the well-known Fraunhofer distance. This paper introduces a further validation of this reduced distance, by employing an innovative method to simulate spherical measurements with arbitrary DUT, test probes and range lengths. The studies carried out confirm the relevance of this shorter distance, not only for the evaluation of the peak equivalent istropic radiated power (EIRP) or sensitivity (EIS), but also for the total radiated power (TRP) or sensitivity (TIS). In addition, it is demonstrated that the usual assumption that the TRP or TIS measurement is almost independent from the range length is flawed. Two main reasons relating to the test antenna are established which create this dependence: (i) OTA test probes have a finite resolution, and (ii) the probe and instrumentation typically captures the magnitude of two components of the E-field, which are not straightforwardly related to the power density in the near-field.","PeriodicalId":339768,"journal":{"name":"2019 Antenna Measurement Techniques Association Symposium (AMTA)","volume":"39 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":"116126517","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

A Methodology for Instantaneous Polarization Measurements Using a Calibrated Dual-Polarized Probe 一种使用校准双极化探针进行瞬时偏振测量的方法

2019 Antenna Measurement Techniques Association Symposium (AMTA) Pub Date : 2019-10-01 DOI: 10.23919/AMTAP.2019.8906375

B. Walkenhorst, S. Nichols

{"title":"A Methodology for Instantaneous Polarization Measurements Using a Calibrated Dual-Polarized Probe","authors":"B. Walkenhorst, S. Nichols","doi":"10.23919/AMTAP.2019.8906375","DOIUrl":"https://doi.org/10.23919/AMTAP.2019.8906375","url":null,"abstract":"Accurately measuring the polarization of an antenna is a topic that has garnered much interest over many years. Methods abound including phase-referenced measurements using two orthogonal polarizations, phase-less measurements using two or three pairs of orthogonal polarizations, spinning linear probe measurements, and the rigorous three-antenna polarization method. In spite of the many publications on the topic, polarization measurements are very challenging and can easily lead to confusion, particularly in accurately determining the sense of polarization.In this paper, we describe a method of accurately and rapidly measuring the polarization of an antenna with the aid of a multi-channel measurement receiver and a dual-polarized probe. The method acquires phase-referenced measurements of two orthogonal polarizations. To enable such measurements, we describe a methodology for calibrating the probe. We also describe a tool for automating the polarization measurement and display of the polarization state. By automating the process, it is hoped that the common challenges and confusions associated with polarization measurements may be largely obviated.","PeriodicalId":339768,"journal":{"name":"2019 Antenna Measurement Techniques Association Symposium (AMTA)","volume":"94 1 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":"129438527","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

A Low-Cost Multicopter Based Near-Field Antenna Measurement System Employing Software Defined Radio and 6-D Laser Metrology 基于软件无线电和六维激光测量的低成本多旋翼近场天线测量系统

2019 Antenna Measurement Techniques Association Symposium (AMTA) Pub Date : 2019-10-01 DOI: 10.23919/AMTAP.2019.8906481

R. A. Mauermayer, J. Kornprobst, T. Fritzel

引用次数: 5

A Review of the Changes and Additions to the Antenna Measurement Standard IEEE Std 149 天线测量标准IEEE Std 149的修改和补充综述

2019 Antenna Measurement Techniques Association Symposium (AMTA) Pub Date : 2019-10-01 DOI: 10.23919/AMTAP.2019.8906343

V. Rodriguez, J. Fordham, L. Foged

{"title":"A Review of the Changes and Additions to the Antenna Measurement Standard IEEE Std 149","authors":"V. Rodriguez, J. Fordham, L. Foged","doi":"10.23919/AMTAP.2019.8906343","DOIUrl":"https://doi.org/10.23919/AMTAP.2019.8906343","url":null,"abstract":"The IEEE Standard 149, Standard Test Procedures for Antennas, has not been revised since 1979. Over the years the Standard was reaffirmed, that is, its validity was re-established by the IEEE APS Standards Committee, without any changes. Recently however, the IEEE Standards Association stopped the practice of reaffirming standards. This change in policy by the IEEE has been the “medicine” that this Standard needed. A working group was organized and a project authorization request (PAR) was approved by IEEE for the document to be updated. In this paper, the expected changes to the document are described and commented. The main change is to convert the Standard to a recommended practice document. Additionally, some new techniques to measure antennas, such as the use of reverberation chambers for efficiency measurements and more information on compact ranges, is discussed. Other topics inserted are more guidance on indoor ranges and an updated section on instrumentation. Most importantly, a discussion on uncertainty is included. The result will be a very useful document for those designing and evaluating antenna test facilities, and those performing the antenna measurements.","PeriodicalId":339768,"journal":{"name":"2019 Antenna Measurement Techniques Association Symposium (AMTA)","volume":"8 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":"124426348","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: 3

Active Array Measurements using the Portable Laser Guided Robotic Metrology System 使用便携式激光制导机器人测量系统的有源阵列测量

2019 Antenna Measurement Techniques Association Symposium (AMTA) Pub Date : 2019-10-01 DOI: 10.23919/AMTAP.2019.8906467

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

引用次数: 3

Robust Automotive Satellite Navigation Achieved with Distributed Groups of Sub-arrays 利用分布式子阵列实现汽车卫星鲁棒导航

2019 Antenna Measurement Techniques Association Symposium (AMTA) Pub Date : 2019-10-01 DOI: 10.23919/AMTAP.2019.8906347

S. N. Hasnain, R. Stephan, Marius Brachvogel, M. Meurer, M. Hein

{"title":"Robust Automotive Satellite Navigation Achieved with Distributed Groups of Sub-arrays","authors":"S. N. Hasnain, R. Stephan, Marius Brachvogel, M. Meurer, M. Hein","doi":"10.23919/AMTAP.2019.8906347","DOIUrl":"https://doi.org/10.23919/AMTAP.2019.8906347","url":null,"abstract":"Ambiguous direction-of-arrival estimation is a key problem for uniformly distributed antenna arrays with inter-element spacing exceeding half of the carrier wavelength. The primary reason behind such ambiguity are the grating lobes generated in the radiation patterns due to insufficient spatial sampling. An L-shaped orthogonal arrangement of radiating elements in distributed sub-arrays is an approach that removes grating lobes and consequent ambiguity to a great extent. The reduction of footprint area by distributing the elements across a car also makes it a suitable approach for conformal integration into automotive exterior parts. In order to realize the feasibility of its application in passenger cars, we investigate and evaluate this concept through measurements and digital array signal processing. This paper presents a comparison of L-shaped antenna element arrangements for different spacings between two sub-arrays, as well as a verification of the concept when mounted on a passenger car. For each scenario, the radiation patterns are analyzed and the robustness of the system against a static interferer is verified.","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":"115447175","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