2017 Antenna Measurement Techniques Association Symposium (AMTA)最新文献_第3页

PCB-side matching networks for coaxial connectors 同轴连接器的pcb侧匹配网络

2017 Antenna Measurement Techniques Association Symposium (AMTA) Pub Date : 2017-10-01 DOI: 10.23919/AMTAP.2017.8123712

A. Diewald, Simon Müller, A. Olk

引用次数: 6

Measurements of incident radio frequency power levels from the L3 technologies provision body scanner for the national academy of science 测量来自L3技术的入射射频功率水平，为国家科学院提供人体扫描仪

2017 Antenna Measurement Techniques Association Symposium (AMTA) Pub Date : 2017-10-01 DOI: 10.23919/AMTAP.2017.8123699

B. Kent, Tri Van, Ton Van, K. Hamblin, Jennifer Westhoven

{"title":"Measurements of incident radio frequency power levels from the L3 technologies provision body scanner for the national academy of science","authors":"B. Kent, Tri Van, Ton Van, K. Hamblin, Jennifer Westhoven","doi":"10.23919/AMTAP.2017.8123699","DOIUrl":"https://doi.org/10.23919/AMTAP.2017.8123699","url":null,"abstract":"The Transportation Security Administration is tasked with the job of performing safety screening of millions of air travel passengers annually in a safe and efficient manner. One of the most widely deployed detection systems is the L3 Technologies “Provision” body scanner, which utilizes millimeter wave radio frequencies (RF). Have you ever wondered what type and levels of RF energy are used to execute this routine security screening test? Recently, the Department of Homeland Security, Transportation Security Administration, tasked the National Academies of Science (NAS) to execute an updated safety analysis of the L3 manufactured TSA ProVision Body Scanner units deployed in airports world-wide. In the process of executing their tasking, the NAS realized there was very little peer-reviewed published data on calibrated field incident power within the ProVision scanner itself. While L3 has their own factory acceptance program, the NAS wanted independent measurements executed on operational L3 machines at four randomly selected airports. The NAS contracted with the team of BerrieHill Research and Applied Research Associates to design a specialized field probe system that measures the RF field strength of the Provision Units. This very challenging measurement environment required design ingenuity to fulfill the contract needs, since this system was not allowed to physically connect to any part of the ProVision machine. We had to place a field measurement device inside the unit where the passenger stands, and record all data “over the air” only. This paper will completely describe the BRC/ARA Provision Scanner field probe measurement system, and present calibrated RF field measurements.","PeriodicalId":405864,"journal":{"name":"2017 Antenna Measurement Techniques Association Symposium (AMTA)","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132815683","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

Comparing predicted performance of anechoic chambers to free space VSWR measurements 将消声室的预测性能与自由空间VSWR测量值进行比较

2017 Antenna Measurement Techniques Association Symposium (AMTA) Pub Date : 2017-10-01 DOI: 10.23919/AMTAP.2017.8123694

V. Rodriguez

{"title":"Comparing predicted performance of anechoic chambers to free space VSWR measurements","authors":"V. Rodriguez","doi":"10.23919/AMTAP.2017.8123694","DOIUrl":"https://doi.org/10.23919/AMTAP.2017.8123694","url":null,"abstract":"Indoor antenna ranges must have the walls, floor and ceiling treated with RF absorber. The normal incidence performance of the absorber is usually provided by the manufacturers of the materials; however, the bi-static or off angle performance must also be known. In reference [1], a polynomial approximation was introduced that gave a prediction of the reflected energy from pyramidal absorber. In this paper, the approximations are used to predict the quiet zone (QZ) performance of several anechoic chambers. These predictions are compared with full wave analysis performed in CST Suite®. A 12 m wide by 22 m long with a height of 12 m chamber was analyzed at 700 MHz. The QZ performance was compared to the polynomial predictions showing a difference of less than 2.2 dB. In addition, comparisons are made with measurements of the QZ performance of anechoic chambers. Measurements performed per the free space VSWR method of three different chambers are compared with the prediction that uses the polynomials presented in [1]. The chambers are: a 18 m long by 11.5 m wide and 11.5 m in height operating from 100M MHz to 12 GHz; a 13.41 m by6.1 m by 6.1 m operating from 800 MHz to 6 GHz; and a 14 m long by 4.12 m by 4.27 m operating in the X band. The results show that the polynomial approximations can be used to give a reasonably accurate and safe prediction of the QZ performance of anechoic chambers.","PeriodicalId":405864,"journal":{"name":"2017 Antenna Measurement Techniques Association Symposium (AMTA)","volume":"85 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125851314","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

Advances in SAR-ISAR blending SAR-ISAR混合研究进展

2017 Antenna Measurement Techniques Association Symposium (AMTA) Pub Date : 2017-10-01 DOI: 10.23919/AMTAP.2017.8123701

C. Larsson, J. Jersblad

引用次数: 1

Channel de-embedding and measurement system characterization for MIMO at 75 GHz 75 GHz MIMO信道去嵌入和测量系统特性

2017 Antenna Measurement Techniques Association Symposium (AMTA) Pub Date : 2017-10-01 DOI: 10.1002/HTTPS://DX.DOI.ORG/10.23919/AMTAP.2017.8123704

A. Curtin, D. Novotny, A. Yuffa, Selena Leitner

引用次数: 0

An experimental and computational investigation of high-accuracy calibration techniques for gain reference antennas 增益参考天线高精度标定技术的实验与计算研究

2017 Antenna Measurement Techniques Association Symposium (AMTA) Pub Date : 2017-10-01 DOI: 10.23919/AMTAP.2017.8123708

O. Breinbjerg, K. Kaslis, J. M. Nielsen

引用次数: 4

High performance dual polarized near-field probe at V-band provides increased performances for millimeter wave spherical near-field measurements v波段的高性能双偏振近场探头为毫米波球面近场测量提供了更高的性能

2017 Antenna Measurement Techniques Association Symposium (AMTA) Pub Date : 2017-10-01 DOI: 10.23919/AMTAP.2017.8123719

A. Giacomini, L. Foged, E. Szpindor, W. Zhang, P. Iversen

{"title":"High performance dual polarized near-field probe at V-band provides increased performances for millimeter wave spherical near-field measurements","authors":"A. Giacomini, L. Foged, E. Szpindor, W. Zhang, P. Iversen","doi":"10.23919/AMTAP.2017.8123719","DOIUrl":"https://doi.org/10.23919/AMTAP.2017.8123719","url":null,"abstract":"V-band (50–75GHz) applications such as 5G and myriad others are the catalyst for high performance near-field antenna measurement systems. For Spherical Near-Field (SNF), the traditional approaches at millimeter wave frequencies collect two full spheres of data in the near-field where each sphere samples one of two linear and orthogonal fields of the antenna under test (AUT). These two orthogonal polarizations are traditionally achieved through mechanical rotation of a single polarized probe. To improve measurement time and accuracy, MVG has developed a dual polarized V-band probe. This probe has been integrated in a millimeter wave SNF system (μ-Lab) and is connected to two simultaneously sampled parallel receiver channels. This approach only requires one sphere to be measured and it ensures the two polarization components are sampled at the same point in space and time. The SNF probe design proposed in this paper is based on an axially corrugated aperture. The probe includes a compact integrated OMT and the ports are WR-15 waveguide. This paper will present the design requirement, design details, and measured performances of the proposed dual polarized SNF probe.","PeriodicalId":405864,"journal":{"name":"2017 Antenna Measurement Techniques Association Symposium (AMTA)","volume":"44 9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122425603","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

Validation of measured source antenna representation in the numerical simulation of a GNSS antenna on sentinel satellite 前哨卫星GNSS天线数值模拟中实测源天线表示的验证

2017 Antenna Measurement Techniques Association Symposium (AMTA) Pub Date : 2017-10-01 DOI: 10.23919/AMTAP.2017.8123706

M. Saporetti, L. Scialacqua, F. Saccardi, L. Foged, J. Zackrisson, D. Trenta, L. S. Drioli

{"title":"Validation of measured source antenna representation in the numerical simulation of a GNSS antenna on sentinel satellite","authors":"M. Saporetti, L. Scialacqua, F. Saccardi, L. Foged, J. Zackrisson, D. Trenta, L. S. Drioli","doi":"10.23919/AMTAP.2017.8123706","DOIUrl":"https://doi.org/10.23919/AMTAP.2017.8123706","url":null,"abstract":"The measured source or Huygens box antenna representation has become an increasing popular solution to create accurate computational models of measured source antennas for the numerical analysis of antenna placement on complex platforms such as satellites. The equivalent representation of the measured antenna is obtained through the equivalent current (EQC) or inverse source technique, which is a measurement post-processing method that represents the measured antenna in terms of equivalent electric and magnetic currents on a surface conformal to the antenna. This technique enables computation of complex antenna scenarios in which the source antenna is physically available but the computational details are unknown. This is often the case for space antenna testing in which antennas from different suppliers are integrated on a platform representing the complex scenario. In this paper, the validation of this technique in space antenna testing application is presented. The test object is a GNSS antenna mounted on a Sentinel satellite mock-up (both designed, manufactured and measured by RUAG SPACE) working at 1227 and 1575 GHz. Preliminary results of this validation activity have been previously presented. This paper reports on the full validation activity.","PeriodicalId":405864,"journal":{"name":"2017 Antenna Measurement Techniques Association Symposium (AMTA)","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132394356","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

On the disadvantages of tilting the receive end-wall of a compact range for RCS measurements 小型RCS测量量程接收端壁倾斜的缺点

2017 Antenna Measurement Techniques Association Symposium (AMTA) Pub Date : 2017-10-01 DOI: 10.23919/AMTAP.2017.8123695

V. Rodriguez

{"title":"On the disadvantages of tilting the receive end-wall of a compact range for RCS measurements","authors":"V. Rodriguez","doi":"10.23919/AMTAP.2017.8123695","DOIUrl":"https://doi.org/10.23919/AMTAP.2017.8123695","url":null,"abstract":"Tilting the receive end wall of a compact range anechoic chamber to improve Radar Cross-Section (RCS) measurements has been a tool of the trade used since the earliest days of anechoic chambers. A preliminary analysis using geometrical optics (GO) validates this technique. The GO approach however ignores the backscattering modes from the reflected waves from a field of absorber. In this paper, a series of numerical experiments are performed comparing a straight wall and a tilted wall to show the effects on both the quiet zone and the energy reflected back towards the source antenna. Two Absorber covered walls are simulated. Both walls are illuminated with a standard gain horn (SGH). The effects of a wall tilted back 20° are computed. The simulations are done for 72-inch long absorber for the frequency range covering from 500 MHz to 1 GHz. The ripple on a 10 ft (3.05 m) quiet zone (QZ) is measured for the vertical wall and the tilted wall. In addition to the QZ analysis a time-domain analysis is performed. The reflected pulse at the excitation antenna is compared for the two back wall configurations Results show that tilting the wall improves measurements at some frequencies but causes a higher return at other frequencies; indicating this method does not provide a broadband advantage.","PeriodicalId":405864,"journal":{"name":"2017 Antenna Measurement Techniques Association Symposium (AMTA)","volume":"2015 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132669288","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

Truncation error mitigation in free-space automotive partial spherical near field measurements 自由空间汽车部分球面近场测量中的截断误差缓解

2017 Antenna Measurement Techniques Association Symposium (AMTA) Pub Date : 2017-10-01 DOI: 10.23919/AMTAP.2017.8123710

F. Saccardi, F. Rossi, L. Scialacqua, L. Foged

{"title":"Truncation error mitigation in free-space automotive partial spherical near field measurements","authors":"F. Saccardi, F. Rossi, L. Scialacqua, L. Foged","doi":"10.23919/AMTAP.2017.8123710","DOIUrl":"https://doi.org/10.23919/AMTAP.2017.8123710","url":null,"abstract":"Antennas installed in modern cars are often highly integrated. In such cases, the entire vehicle is contributing to the radiated field, in particular at lower frequencies such as VHF. The complete characterization of the full vehicle is thus typically required. For frequencies down to 70 MHz, a widely accepted and cost effective solution is a multi-probe spherical Near Field (NF) system in which the scanning area is truncated below the horizon to minimize system dimensions. In order to emulate a proper freespace condition in the lower hemisphere, the ground floor is covered with absorbing material [1]. The partial NF acquisition of such systems leads to truncation errors if standard Near Field to Far Field (NF/FF) transformation is applied [2-3]. The mitigation of truncation error in general measurement scenarios by different post-processing techniques are described in the literature [4-9]. In this contribution, the mitigation capabilities of two techniques are investigated by experiment for an automotive scenario for the first time. The measurements have been performed on a 1:12 scaled vehicle-mounted antenna in a full-sphere multi-probe system. The scaled system and vehicle is representative of a real size system in the frequency range 70–400 MHz. Both truncated and full 3D measurements are performed for comparison.","PeriodicalId":405864,"journal":{"name":"2017 Antenna Measurement Techniques Association Symposium (AMTA)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133578064","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: 15