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2018 11th German Microwave Conference (GeMiC)最新文献

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Radar-based altitude over ground estimation of UAVs 无人机的雷达对地高度估计
2018 11th German Microwave Conference (GeMiC) Pub Date : 2018-04-12 DOI: 10.18725/OPARU-6199
Markus Schartel, Ralf Burr, Pirmin Schoeder, G. Rossi, Philipp Hügler, W. Mayer, C. Waldschmidt
{"title":"Radar-based altitude over ground estimation of UAVs","authors":"Markus Schartel, Ralf Burr, Pirmin Schoeder, G. Rossi, Philipp Hügler, W. Mayer, C. Waldschmidt","doi":"10.18725/OPARU-6199","DOIUrl":"https://doi.org/10.18725/OPARU-6199","url":null,"abstract":"A 26 GHz low-cost, low power, and low complexity pulse correlation radar (PCR) for online altitude over ground estimation of an unmanned aerial vehicle (UAV) is presented. In the experimental part of this paper, measurement results of the customized lightweight radar are shown. Therefore, this radar, a commercially available lidar sensor, and a real time kinematic global navigation satellite system (RTK GNSS) are mounted on a UAV. It is shown that in sparse vegetation, the radar in combination with a particle filter outperforms the lidar sensor. Besides, it is explained, why strong radar reflections can lead to a time offset of the particle filtered altitude. As an application, a radar-based terrain map is presented.","PeriodicalId":376459,"journal":{"name":"2018 11th German Microwave Conference (GeMiC)","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133212368","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
Analysis and characterization of a load modulated balanced amplifier for base-station applications 用于基站的负载调制平衡放大器的分析和特性
2018 11th German Microwave Conference (GeMiC) Pub Date : 2018-04-12 DOI: 10.23919/GEMIC.2018.8335013
R. Quaglia, J. Powell, D. Shepphard, P. Tasker, S. Cripps
{"title":"Analysis and characterization of a load modulated balanced amplifier for base-station applications","authors":"R. Quaglia, J. Powell, D. Shepphard, P. Tasker, S. Cripps","doi":"10.23919/GEMIC.2018.8335013","DOIUrl":"https://doi.org/10.23919/GEMIC.2018.8335013","url":null,"abstract":"This paper discusses the analysis and the experimental results of a load modulated balanced amplifier designed for base-station applications. The hardware, employing commercially available GaN packaged devices, operates in the 1.7–2.5 GHz band, with maximum output power higher than 63 W, and with power added efficiency higher than 43% and 39% at 6 dB and 8 dB output power back-off, respectively. The analysis reveals that the proposed topology has some advantages when compared to other load modulated amplifiers, such as the Doherty, but on the other hand it shows an intrinsic non-linear behaviour. This is confirmed by experimental results, where it is shown that employing a non-linear splitting function between the two branches of the amplifier improves the performances with respect to a linear splitter. Moreover, through the adoption of a proper digital splitting function and predistortion it is possible to linearize the amplifier to a level acceptable for Long Term Evolution (LTE) base-stations while maintaining a competitive average efficiency.","PeriodicalId":376459,"journal":{"name":"2018 11th German Microwave Conference (GeMiC)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115177033","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
A compact half-mode substrate integrated waveguide filter based on a circular resonator 基于圆谐振器的紧凑半模衬底集成波导滤波器
2018 11th German Microwave Conference (GeMiC) Pub Date : 2018-04-10 DOI: 10.23919/GEMIC.2018.8335046
Ahmad Bader Alothman Alterkawi, M. Bakr, R. Teschl, W. Bösch, M. Bozzi
{"title":"A compact half-mode substrate integrated waveguide filter based on a circular resonator","authors":"Ahmad Bader Alothman Alterkawi, M. Bakr, R. Teschl, W. Bösch, M. Bozzi","doi":"10.23919/GEMIC.2018.8335046","DOIUrl":"https://doi.org/10.23919/GEMIC.2018.8335046","url":null,"abstract":"In this paper, a compact Ultra-WideBand (UWB) filter is presented. The filter is based on a Half Mode Substrate Integrated Waveguide (HM-SIW) with a circular resonator. The proposed filter operates at the fundamental mode and is designed to be resonating at 4.4GHz with a bandwidth (BW) of 2100MHz. The simulation results show that the filter has an insertion loss (IL) of 1.65dB.","PeriodicalId":376459,"journal":{"name":"2018 11th German Microwave Conference (GeMiC)","volume":"1106 ","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133843426","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
Digitally controlled vector modulator SiGe MMIC for millimeter-wave phased array applications 数字控制矢量调制器SiGe MMIC毫米波相控阵应用
2018 11th German Microwave Conference (GeMiC) Pub Date : 2018-04-10 DOI: 10.23919/GEMIC.2018.8335026
M. Kantanen, J. Holmberg, M. Varonen, A. Rantala
{"title":"Digitally controlled vector modulator SiGe MMIC for millimeter-wave phased array applications","authors":"M. Kantanen, J. Holmberg, M. Varonen, A. Rantala","doi":"10.23919/GEMIC.2018.8335026","DOIUrl":"https://doi.org/10.23919/GEMIC.2018.8335026","url":null,"abstract":"This paper presents a digitally controlled vector modulator integrated circuit aimed for millimeter wave phased array systems. The vector modulator operates over 60–100 GHz range covering 360 degree phase and over 10 dB gain control ranges. The maximum gain of 35.6 dB is achieved at 96.8 GHz. The chip is processed in 0.13 µm silicon germanium technology. Size of the chip including the pads is 2.1 × 0.7 mm2 from which the vector modulator core occupies 0.45 × 0.30 mm2.","PeriodicalId":376459,"journal":{"name":"2018 11th German Microwave Conference (GeMiC)","volume":"145 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124404099","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
Chipless tags infrastructure based localization in indoor environments 基于室内环境定位的无芯片标签基础设施
2018 11th German Microwave Conference (GeMiC) Pub Date : 2018-03-12 DOI: 10.23919/GEMIC.2018.8335081
M. El-Absi, A. Abuelhaija, A. A. Abbas, Feng Zheng, K. Solbach, T. Kaiser
{"title":"Chipless tags infrastructure based localization in indoor environments","authors":"M. El-Absi, A. Abuelhaija, A. A. Abbas, Feng Zheng, K. Solbach, T. Kaiser","doi":"10.23919/GEMIC.2018.8335081","DOIUrl":"https://doi.org/10.23919/GEMIC.2018.8335081","url":null,"abstract":"In this work, we study dielectric resonator (DR) tag based localization using time difference of arrival (TDOA) method in indoor environments. DRs, which act as chipless tags, are used as reference nodes in order to localize an object equipped with a reader. The ringing behavior of the DR tags is utilized as the fingerprint of the tags, which is used to estimate TDOA using the cross-correlation algorithm. Simulations and measurements are performed to examine the performance of the proposed DR tags and the localization algorithm.","PeriodicalId":376459,"journal":{"name":"2018 11th German Microwave Conference (GeMiC)","volume":"96 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115678330","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
Thermal modeling and measurement of a power amplifier module for a silicon-ceramic substrate 硅陶瓷基板功率放大器模块的热建模与测量
2018 11th German Microwave Conference (GeMiC) Pub Date : 2018-03-12 DOI: 10.23919/GEMIC.2018.8335033
A. Frank, V. Cortes, S. Michael, A. Hagelauer, G. Fischer
{"title":"Thermal modeling and measurement of a power amplifier module for a silicon-ceramic substrate","authors":"A. Frank, V. Cortes, S. Michael, A. Hagelauer, G. Fischer","doi":"10.23919/GEMIC.2018.8335033","DOIUrl":"https://doi.org/10.23919/GEMIC.2018.8335033","url":null,"abstract":"In the present paper, the thermal behavior of a power amplifier on a printed circuit board (PCB) and in a low-temperature co-fired ceramics module is examined by thermal FE modelling and measurements on the PCB module. The thermal impact on the performance of the PA and its power dissipation are determined by harmonic balance simulation and measurements. Based on these simulations, an integrated design of a demonstrator system on SiCer is pursued.","PeriodicalId":376459,"journal":{"name":"2018 11th German Microwave Conference (GeMiC)","volume":"109 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122415573","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
Investigation of the transient EM scattering of a dielectric resonator 介质谐振器瞬态电磁散射的研究
2018 11th German Microwave Conference (GeMiC) Pub Date : 2018-03-12 DOI: 10.23919/GEMIC.2018.8335082
A. A. Abbas, A. Abuelhaija, K. Solbach
{"title":"Investigation of the transient EM scattering of a dielectric resonator","authors":"A. A. Abbas, A. Abuelhaija, K. Solbach","doi":"10.23919/GEMIC.2018.8335082","DOIUrl":"https://doi.org/10.23919/GEMIC.2018.8335082","url":null,"abstract":"Dielectric resonators have gained interest in RF identification and localization system concepts. This contribution reports observations from experiments and EM simulation with special focus on the transient behavior of the EM scattering of a ceramic resonator in free space. Explanation and analysis of the transient behavior is given using equivalent circuit modeling and EM simulation. The time constant of the particular resonant mode excited is shown to depend on the loaded quality factor of the resonant mode and governs the exponential charging up process and the exponential decay process of \"ringing\" of the resonator at its Eigen frequency. For an exciting RF pulse much shorter than the time constant, the resonator scattering amplitude increases linearly with increasing pulse length which allows to determine the structural response also. Forced excitation at a frequency offset from the resonant frequency will still produce free \"ringing\" at the resonator's Eigen frequency. The scattering amplitude is related to the Radar Cross Section of a dielectric resonator, but this only applies to the steady state of excitation.","PeriodicalId":376459,"journal":{"name":"2018 11th German Microwave Conference (GeMiC)","volume":"156 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134453937","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: 14
Passive chipless wireless pressure sensor for Harsh and reflective environments 无源无芯片无线压力传感器，适用于恶劣和反射环境
2018 11th German Microwave Conference (GeMiC) Pub Date : 2018-03-12 DOI: 10.23919/GEMIC.2018.8335071
Peter Schumacher, C. Schuster, Alejandro Jiménez-Sáez, M. Schüßler, R. Jakoby
{"title":"Passive chipless wireless pressure sensor for Harsh and reflective environments","authors":"Peter Schumacher, C. Schuster, Alejandro Jiménez-Sáez, M. Schüßler, R. Jakoby","doi":"10.23919/GEMIC.2018.8335071","DOIUrl":"https://doi.org/10.23919/GEMIC.2018.8335071","url":null,"abstract":"This paper presents investigations on a passive chipless wireless pressure sensor to enhance tool life prediction in smart milling machines. High reflective environments in terms of radar clutter are investigated and benefits of using the time gating technique are discussed. Moreover, due to the proposed highly robust design, the sensor can be applied in areas with high temperatures and strong vibrations. The working principle is based on a dielectric resonator which is metal coated on its lateral surface. Perturbing the resonance mode with a metal membrane in vicinity of the resonator leads to a pressure dependent resonance frequency. A broadband interrogation signal is used to determine the resonance frequency, which is represented by a notch in the backscattered spectrum. The pressure sensitivity and pressure range is configurable by using different membrane and spacer thicknesses, respectively. Furthermore, the sensor operates in the frequency range from 20 GHz to 23 GHz with read-out ranges up to 150 cm.","PeriodicalId":376459,"journal":{"name":"2018 11th German Microwave Conference (GeMiC)","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115842887","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: 10
Hardware-accelerated embedded SAR processor for realtime FMCW radar applications 用于实时FMCW雷达应用的硬件加速嵌入式SAR处理器
2018 11th German Microwave Conference (GeMiC) Pub Date : 2018-03-12 DOI: 10.23919/GEMIC.2018.8335080
Jonas Wagner, J. Barowski, Tobias Kalb, I. Rolfes, D. Göhringer
{"title":"Hardware-accelerated embedded SAR processor for realtime FMCW radar applications","authors":"Jonas Wagner, J. Barowski, Tobias Kalb, I. Rolfes, D. Göhringer","doi":"10.23919/GEMIC.2018.8335080","DOIUrl":"https://doi.org/10.23919/GEMIC.2018.8335080","url":null,"abstract":"A realtime Synthetic Aperture Radar (SAR) imaging system for Frequency Modulated Continuous Wave (FMCW) radars using hardware acceleration for highly efficient signal processing is presented. The backprojection algorithm is used for this purpose as it combines efficiency by using the Fast Fourier Transform (FFT) for range compression and the ability to process data after each measurement. A second radar sensor provides the possibility of a free motion during the measurement process. The signal processing is implemented on a Xilinx Zynq-7000 System on a Chip (SoC). It has a processor system as well as a programmable logic that can be used for hardware acceleration of suitable functions like the FFT and the backprojection algorithm. With this system design, up to 107 measurements per second can be processed.","PeriodicalId":376459,"journal":{"name":"2018 11th German Microwave Conference (GeMiC)","volume":"129 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128847110","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
Two Q-band power amplifier MMICs in 100 nm AlGaN/GaN HEMT technology 两个q波段功率放大器mmic在100纳米AlGaN/GaN HEMT技术
2018 11th German Microwave Conference (GeMiC) Pub Date : 2018-03-12 DOI: 10.23919/GEMIC.2018.8335016
P. Feuerschütz, C. Friesicke, R. Lozar, S. Wagner, T. Maier, P. Brückner, R. Quay, A. Jacob
{"title":"Two Q-band power amplifier MMICs in 100 nm AlGaN/GaN HEMT technology","authors":"P. Feuerschütz, C. Friesicke, R. Lozar, S. Wagner, T. Maier, P. Brückner, R. Quay, A. Jacob","doi":"10.23919/GEMIC.2018.8335016","DOIUrl":"https://doi.org/10.23919/GEMIC.2018.8335016","url":null,"abstract":"Two power amplifier (PA) MMIC designs with more than 1W of output power in the 37.5–42.5 GHz Q-band downlink band are presented. The circuits are manufactured using the Fraunhofer IAF 100 nm AlGaN/GaN process. The first one is a two-stage design in microstrip line (MSL) technology, whereas the second one is a three-stage design in grounded coplanar waveguide (GCPW) technology, which enables effective output power combining and compact layout at Q-band. A maximum output power of 2.1 W (33.2 dBm) is measured at 39 GHz with a power-added efficiency (PAE) of 14.7%, corresponding to a power density of 1.45 W/mm.","PeriodicalId":376459,"journal":{"name":"2018 11th German Microwave Conference (GeMiC)","volume":"91 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122538632","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
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