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2015 European Microwave Conference (EuMC)最新文献

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UWB impulse radiation source with integrated optoelectronic generator 集成光电发生器的超宽带脉冲辐射源
2015 European Microwave Conference (EuMC) Pub Date : 2016-05-31 DOI: 10.1017/S1759078716000684
R. Négrier, M. Lalande, V. Bertrand, J. Andrieu, V. Couderc, B. Shalaby, L. Pécastaing, A. D. de Ferron, L. Desrumaux
{"title":"UWB impulse radiation source with integrated optoelectronic generator","authors":"R. Négrier, M. Lalande, V. Bertrand, J. Andrieu, V. Couderc, B. Shalaby, L. Pécastaing, A. D. de Ferron, L. Desrumaux","doi":"10.1017/S1759078716000684","DOIUrl":"https://doi.org/10.1017/S1759078716000684","url":null,"abstract":"The study presented in this article belongs within the context of a design of a new kind of short-range Ultra Wide-Band (UWB) Radar with an autonomous scanning capability. The generation of short pulses is performed with an optoelectronic device triggered by a laser flash and operating in linear switching mode. By adding as many optical systems as antennas, we create a transmitting array with increased radiated energy. Each of those elements are fed with bursts composed of UWB optogenerated pulses with a slightly different pulse repetition frequency allowing beam-scanning capability. This article presents in detail all the parts needed to implement the elementary radiation source and offers a mathematical method of calculation to trace back to the generated feeding signal.","PeriodicalId":350086,"journal":{"name":"2015 European Microwave Conference (EuMC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131295157","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
Dual polarized monopulse tracking feed for prime focal reflector antenna at S-band using crossed dipole elements 基于交叉偶极元的s波段原焦反射天线双偏振单脉冲跟踪馈源
2015 European Microwave Conference (EuMC) Pub Date : 2015-12-07 DOI: 10.1109/EURAD.2015.7346312
Vamshi Krishna Panasa, Rajesh Chivukula, K. Sreekumar, S. Sharma
{"title":"Dual polarized monopulse tracking feed for prime focal reflector antenna at S-band using crossed dipole elements","authors":"Vamshi Krishna Panasa, Rajesh Chivukula, K. Sreekumar, S. Sharma","doi":"10.1109/EURAD.2015.7346312","DOIUrl":"https://doi.org/10.1109/EURAD.2015.7346312","url":null,"abstract":"Monopulse tracking feed for a 1.8m prime focal reflector antenna using printed circuit crossed dipole elements is designed, developed and tested at S-Band. The requirement is to generate a low profile, high performance tracking feed suitable for dual polarized operation with high pattern symmetry for optimum illumination of a reflector. Crossed dipole antenna has been selected as feed element as it has low profile, broadband characteristics and supports dual polarization. The designed feed consists of four such elements arranged in 2×2 configuration. Feed analysis has been carried out in Ansys HFSS. Simulated performance of the feed shows a sum channel gain of 10.8dBi and difference between sum pattern peak to difference pattern peak is 3.3dB. In this design, a combination of striplines and microstrip lines are used to excite the antenna elements resulting in low cross polarization better than -30dB. Null depth in excess of 35dB is obtained in simulation for both polarizations. The antenna feed measurement has been carried out in planar near field test facility at Larsen & Toubro, Mumbai, India and measured results are presented in this paper.","PeriodicalId":350086,"journal":{"name":"2015 European Microwave Conference (EuMC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128708076","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
Method of multi-channel calibration for digital array radar 数字阵列雷达多通道标定方法
2015 European Microwave Conference (EuMC) Pub Date : 2015-12-07 DOI: 10.1109/EURAD.2015.7346355
Weixing Li, Jianzhi Lin, Weihua Wang, Yasen Wang, Zengping Chen
{"title":"Method of multi-channel calibration for digital array radar","authors":"Weixing Li, Jianzhi Lin, Weihua Wang, Yasen Wang, Zengping Chen","doi":"10.1109/EURAD.2015.7346355","DOIUrl":"https://doi.org/10.1109/EURAD.2015.7346355","url":null,"abstract":"Amplitude and phase errors among multi-channels in digital array radar will seriously deteriorate the performance of digital beam-forming (DBF) and high resolution direction finding. This paper describes a practical calibration algorithm that calibrates amplitude and phase errors coarsely using interior calibration source and then realizes precise calibration by eigen-decomposition approach. Based on an 8-elements digital array radar test-bed operating at L & S band, experiments are carried out in the anechoic chamber and outdoors. After calibration, the radiation pattern is nearly ideal and the direction of arrival (DOA) estimation of measured data achieves a good performance. The expected results illustrate that interior-auto calibration algorithm is fairly effective and feasible in actual systems.","PeriodicalId":350086,"journal":{"name":"2015 European Microwave Conference (EuMC)","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129193247","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: 8
Analog Beamforming Network for Ka band Satellite on the Move Terminal with phase shifting technique based on I/Q mixer 基于I/Q混频器相移技术的Ka波段卫星移动终端模拟波束形成网络
2015 European Microwave Conference (EuMC) Pub Date : 2015-12-07 DOI: 10.1109/EURAD.2015.7346333
Saverio Alessandro, Maria Concetta De Bilio, I. Pomona, Salvatore Coco, Gaspare Bavetta, A. Laudani
{"title":"Analog Beamforming Network for Ka band Satellite on the Move Terminal with phase shifting technique based on I/Q mixer","authors":"Saverio Alessandro, Maria Concetta De Bilio, I. Pomona, Salvatore Coco, Gaspare Bavetta, A. Laudani","doi":"10.1109/EURAD.2015.7346333","DOIUrl":"https://doi.org/10.1109/EURAD.2015.7346333","url":null,"abstract":"In this paper an innovative Analog Beamforming Network is described, operating in Ka band, to be used on a new generation of Satellite Terminals for Communications on the Move. The Beamforming Network provides the required suitably phase shifted RF signals with adequate power levels to the phased array antenna elements in order to squint the beam electronically toward the satellite direction and keep the link with the satellite active also during the movement of the vehicle. A continuous phase shifting is achieved using I/Q mixers in a particular operating condition, resulting in an original low cost engineering solution, adopted on both Tx and Rx modules, achieving a full continuous 360° coverage in the beam squint.","PeriodicalId":350086,"journal":{"name":"2015 European Microwave Conference (EuMC)","volume":"254 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114404257","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
Uniplanar log-periodic antenna with a perpendicular plane reflector dedicated to a radio wave camera system 具有垂直平面反射器的单平面对数周期天线，专用于无线电波相机系统
2015 European Microwave Conference (EuMC) Pub Date : 2015-12-07 DOI: 10.1109/EURAD.2015.7346367
F. Ouasli, J. Coupez, P. Pajusco, C. Person
{"title":"Uniplanar log-periodic antenna with a perpendicular plane reflector dedicated to a radio wave camera system","authors":"F. Ouasli, J. Coupez, P. Pajusco, C. Person","doi":"10.1109/EURAD.2015.7346367","DOIUrl":"https://doi.org/10.1109/EURAD.2015.7346367","url":null,"abstract":"In this paper, an uniplanar log-periodic antenna with a perpendicular plane reflector dedicated to a radio wave camera system is presented. The performance of this antenna are investigated over a wide frequency range, comparing between measured and simulated results. The measured return loss of the antenna exhibits a wideband performance between 1.5 and 4GHz (@VSWR=2). The proposed antenna has a good symmetrical radiation pattern in the E- and H-planes. This antenna configuration is suitable particularly for broadband phased antenna arrays where active circuits are integrated on the feed substrate. The developed antenna will be exploited in a future context of an ultra wideband antenna array, with performances in radiation independent from frequency, for a radio wave camera system.","PeriodicalId":350086,"journal":{"name":"2015 European Microwave Conference (EuMC)","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114568516","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
High-performance autofocusing for light-weight SAR platforms 用于轻型SAR平台的高性能自动对焦
2015 European Microwave Conference (EuMC) Pub Date : 2015-12-07 DOI: 10.1109/EURAD.2015.7346361
I. Gorovyi, O. Bezvesilniy, D. Vavriv
{"title":"High-performance autofocusing for light-weight SAR platforms","authors":"I. Gorovyi, O. Bezvesilniy, D. Vavriv","doi":"10.1109/EURAD.2015.7346361","DOIUrl":"https://doi.org/10.1109/EURAD.2015.7346361","url":null,"abstract":"Autofocusing is one of the key steps in the high-resolution SAR imaging. In the paper several important improvements to the recently developed local-quadratic map-drift autofocus are proposed. Important SAR image preprocessing steps applied before the local Doppler rate errors estimation are described. The weighting scheme for the evaluation of residual cross-track acceleration components is developed. It is illustrated that accounting of the local image contrast leads to better estimation precision. Also it is shown that the usage of measured real antenna orientation angles results in more reliable estimation of the local Doppler rate errors. Performance of the trajectory reconstruction technique is tested with experimental data obtained with X-band airborne SAR system.","PeriodicalId":350086,"journal":{"name":"2015 European Microwave Conference (EuMC)","volume":"57 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117019003","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
Compact scan-phase antenna diversity system for high driving speeds 紧凑的扫描相位天线分集系统，高速行驶
2015 European Microwave Conference (EuMC) Pub Date : 2015-12-07 DOI: 10.1109/EURAD.2015.7346331
S. Senega, A. Nassar, S. Lindenmeier
{"title":"Compact scan-phase antenna diversity system for high driving speeds","authors":"S. Senega, A. Nassar, S. Lindenmeier","doi":"10.1109/EURAD.2015.7346331","DOIUrl":"https://doi.org/10.1109/EURAD.2015.7346331","url":null,"abstract":"A scan-phase diversity system is shown to highly improve the reception quality in Rayleigh-fading scenarios even at high driving speeds. The measurements are conducted with an integrated diversity circuit which enables the phase-aligned signal combination in a die area of only 4mm by 4 mm. Combined with a compact level detection circuit and a micro-controller unit which runs the diversity algorithm the diversity system has a stacked footprint area of 10 cm by 7 cm. Measurement results of test drives using this diversity system in a Rayleigh-fading scenario show a significant reduction of audio mutes compared to a single antenna reference system. This is equivalent to an increased link margin which could also be used for increased audio content or quality from the service provider. The diversity system can be applied at arbitrary driving speeds. A significant improvement of signal quality can be shown for all velocities of at least 100 km/h.","PeriodicalId":350086,"journal":{"name":"2015 European Microwave Conference (EuMC)","volume":"52 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121929021","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
Pulsed-field array performance: A TD analysis 脉冲场阵列性能:TD分析
2015 European Microwave Conference (EuMC) Pub Date : 2015-12-07 DOI: 10.1109/EURAD.2015.7346335
I. Lager
{"title":"Pulsed-field array performance: A TD analysis","authors":"I. Lager","doi":"10.1109/EURAD.2015.7346335","DOIUrl":"https://doi.org/10.1109/EURAD.2015.7346335","url":null,"abstract":"The pulsed-field excited array antenna performance is studied via full time-domain instruments. The directional distribution of radiated energy and the directional (system) fidelity factor are employed as performance metrics. Illustrative numerical experiments highlight the expedient radiation features that are specific to pulse-train excited, linear array antennas. The analysis provides an expedient reference for estimating the detectability of the signals radiated by pulse-train excited array antennas, as needed in ultra-high rate wireless digital transfer.","PeriodicalId":350086,"journal":{"name":"2015 European Microwave Conference (EuMC)","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124844688","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 real-time multiple target detecting scheme based on microwave metamaterials 一种基于微波超材料的实时多目标检测方案
2015 European Microwave Conference (EuMC) Pub Date : 2015-12-07 DOI: 10.1109/EURAD.2015.7346346
C. Wu
{"title":"A real-time multiple target detecting scheme based on microwave metamaterials","authors":"C. Wu","doi":"10.1109/EURAD.2015.7346346","DOIUrl":"https://doi.org/10.1109/EURAD.2015.7346346","url":null,"abstract":"In this paper, we present a novel real-time multiple target detecting scheme using microwave metamaterials (MTMs). By utilizing the frequency-space mapping characteristic of microwave MTMs, we are able to detect multiple targets in real time by simply reading the received spectral components with minimum post-processing that is usually required in conventional radar or imaging systems. The proposed scheme demonstrates an ultrafast, simple, low cost, and low latency architecture for target detection and is very promising to be adapted into any real time radar systems.","PeriodicalId":350086,"journal":{"name":"2015 European Microwave Conference (EuMC)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125981452","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
FMCW ramp non-linearity effects and measurement technique for cooperative radar 协同雷达FMCW斜坡非线性效应及测量技术
2015 European Microwave Conference (EuMC) Pub Date : 2015-12-07 DOI: 10.1109/EURAD.2015.7346349
Andreas Frischen, J. Hasch, C. Waldschmidt
{"title":"FMCW ramp non-linearity effects and measurement technique for cooperative radar","authors":"Andreas Frischen, J. Hasch, C. Waldschmidt","doi":"10.1109/EURAD.2015.7346349","DOIUrl":"https://doi.org/10.1109/EURAD.2015.7346349","url":null,"abstract":"In FMCW radars, the linearity of the generated ramp has a determining influence on the range resolution and accuracy. This is especially true for cooperative radar systems, where the ramps for modulation and down-conversion are generated separately, strongly increasing the impact of ramp nonlinearities. In this paper, the causes for ramp non-linearities in a PLL-based synthesizer are discussed and modeled as phase deviations from an ideal ramp. A measurement technique to determine these deviations is introduced, where both the hardware setup and the necessary digital processing steps are presented. It is exemplarily applied to an FMCW synthesizer with an integrated 122-GHz transceiver, evaluating the influences of PLL parameters on ramp linearity. Reference measurements show that phase deviations in the low mrad range can be determined with this technique.","PeriodicalId":350086,"journal":{"name":"2015 European Microwave Conference (EuMC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129656036","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
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