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

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Eigenvalue analysis of a triangular corrugated coaxial cavity with misaligned inner rod 内杆错位的三角波纹同轴腔特征值分析
2018 11th German Microwave Conference (GeMiC) Pub Date : 2018-03-12 DOI: 10.23919/GEMIC.2018.8335063
S. Yuvaraj, Delphine Alphonsa Jose, Sukwinder Singh, M. S. Chauhan, M. Kartikeyan
{"title":"Eigenvalue analysis of a triangular corrugated coaxial cavity with misaligned inner rod","authors":"S. Yuvaraj, Delphine Alphonsa Jose, Sukwinder Singh, M. S. Chauhan, M. Kartikeyan","doi":"10.23919/GEMIC.2018.8335063","DOIUrl":"https://doi.org/10.23919/GEMIC.2018.8335063","url":null,"abstract":"In this paper, effect of the insert misalignment on the eigenvalue of the modes in a triangular corrugated coaxial cavity is studied. By using the Graff's addition theorem, dispersion relation is derived for the coaxial cavity with misaligned inner rod. Analysis shows that due to the structural misalignment, superposition of the wave functions must be considered in the field equations so as to satisfy the boundary conditions. The effect of insert misalignment on the eigenvalue of the operating mode TE34,20 in 170 GHz, 2MW coaxial cavity gyrotron is studied. Results show that there is a significant modification in the eigenvalue of the mode due to the insert misalignment.","PeriodicalId":376459,"journal":{"name":"2018 11th German Microwave Conference (GeMiC)","volume":"42 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":"116197911","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
Chalmers GaN HEMT charge model revisited 重新审视Chalmers GaN HEMT电荷模型
2018 11th German Microwave Conference (GeMiC) Pub Date : 2018-03-12 DOI: 10.23919/GEMIC.2018.8335055
Peng Luo, F. Schnieder, M. Rudolph
{"title":"Chalmers GaN HEMT charge model revisited","authors":"Peng Luo, F. Schnieder, M. Rudolph","doi":"10.23919/GEMIC.2018.8335055","DOIUrl":"https://doi.org/10.23919/GEMIC.2018.8335055","url":null,"abstract":"This paper presents a charge modeling procedure based on the Chalmers GaN HEMT charge model. The impact of the transcapacitances in large-signal charge modeling is investigated. It is shown that the direct use of the determined capacitance model parameters in the charge model is impossible, for the transcapacitances caused by the two bias-voltage dependent charges should be taken into account when the parameters are determined. Finally, it is also shown that the use of the charge model accounting for transcapacitance effects dramatically improves the Y-parameter and large-signal simulation results, which is verified by comparing the measured and simulated Y-parameters and large-signal behaviors.","PeriodicalId":376459,"journal":{"name":"2018 11th German Microwave Conference (GeMiC)","volume":"63 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":"123142422","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
Multiphysical design methodology for the heterogeneous integration of an RF receiver 射频接收机异构集成的多物理设计方法
2018 11th German Microwave Conference (GeMiC) Pub Date : 2018-03-12 DOI: 10.23919/GEMIC.2018.8335030
V. Cortes, U. Stehr, J. Stegner, J. Nowak, M. Hein, R. Sommer, G. Fischer, A. Hagelauer
{"title":"Multiphysical design methodology for the heterogeneous integration of an RF receiver","authors":"V. Cortes, U. Stehr, J. Stegner, J. Nowak, M. Hein, R. Sommer, G. Fischer, A. Hagelauer","doi":"10.23919/GEMIC.2018.8335030","DOIUrl":"https://doi.org/10.23919/GEMIC.2018.8335030","url":null,"abstract":"A multiphysical design methodology dealing with the heterogeneous integration of microelectronic and micro-electro mechanical systems (MEMS) suitable for modern RF transceiver is presented. The proposed approach focuses the design and verification efforts on the transceiver performance requirements by providing the specification and evaluation scopes at the different abstraction levels. The methodology is demonstrated for an LTE user equipment receiver consisting of a low noise amplifier (LNA) and a MEMS-based oscillator for the down conversion stage. The evaluation of the demodulation performance shows the impact of the LNA and the oscillator on the overall system.","PeriodicalId":376459,"journal":{"name":"2018 11th German Microwave Conference (GeMiC)","volume":"43 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":"122095700","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
Design of an error detector circuit for BPSK costas loop for carrier synchronization in millimeter-wave receivers 毫米波接收机载波同步用BPSK costas环路误差检测电路设计
2018 11th German Microwave Conference (GeMiC) Pub Date : 2018-03-12 DOI: 10.23919/GEMIC.2018.8335098
E. R. Bammidi, I. Kallfass
{"title":"Design of an error detector circuit for BPSK costas loop for carrier synchronization in millimeter-wave receivers","authors":"E. R. Bammidi, I. Kallfass","doi":"10.23919/GEMIC.2018.8335098","DOIUrl":"https://doi.org/10.23919/GEMIC.2018.8335098","url":null,"abstract":"This paper presents the system requirements for the implementation of an error detector in Costas Loops for carrier synchronization in millimeter-wave receivers. When the inputs to a circuit are baseband signals, there is a need for DC coupling, four-quadrant operation and linear processing on the signals. Based on the system requirements, a wideband DC coupled, four quadrant analog multiplier circuit was designed to realize an error detector in Costas Loop. The chip was designed in 130nm SiGe:BiCMOS HBT technology with ft of 250 GHz and fmax of 300 GHz. The error detector circuit consumes a total DC power of 160 mW.","PeriodicalId":376459,"journal":{"name":"2018 11th German Microwave Conference (GeMiC)","volume":"41 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":"130540042","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
Path based MIMO channel model for hybrid beamforming architecture analysis 基于路径的MIMO信道模型混合波束形成结构分析
2018 11th German Microwave Conference (GeMiC) Pub Date : 2018-03-12 DOI: 10.23919/GEMIC.2018.8335092
Joerg Eisenbeis, Marius Krause, T. Mahler, S. Scherr, T. Zwick
{"title":"Path based MIMO channel model for hybrid beamforming architecture analysis","authors":"Joerg Eisenbeis, Marius Krause, T. Mahler, S. Scherr, T. Zwick","doi":"10.23919/GEMIC.2018.8335092","DOIUrl":"https://doi.org/10.23919/GEMIC.2018.8335092","url":null,"abstract":"Hybrid beamforming communication systems allow the reduction of digital channels by employing an analogue beamforming network. This approach offers a large reduction in computational effort and energy consumption. Still there are only few practical realizations of such hybrid beamforming communication systems. Hence, there is a nearly infinite number of possible implementations of such an architecture. To analyze and compare the performance of different hybrid beamforming architectures, we present a path based multiple input multiple output (MIMO) channel model. This tool allows us to generate arbitrary propagation paths with distributions of direction of departure (DOD), direction of arrival (DOA) as well as phase and amplitudes. Therefore, an insight of the channel capacity and signal-to-noise ratio (SNR) can be given for different kinds of hybrid beamforming architectures. The results show that the newly developed path based channel model is beneficial for the analysis of hybrid beamforming architectures.","PeriodicalId":376459,"journal":{"name":"2018 11th German Microwave Conference (GeMiC)","volume":"11 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":"115898106","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
Power management unit for a self-sustaining Low Power Wide Area (LPWA) base station 用于自维持低功率广域(LPWA)基站的电源管理单元
2018 11th German Microwave Conference (GeMiC) Pub Date : 2018-03-12 DOI: 10.23919/GEMIC.2018.8335040
Michael Schadhauser, J. Robert, A. Heuberger
{"title":"Power management unit for a self-sustaining Low Power Wide Area (LPWA) base station","authors":"Michael Schadhauser, J. Robert, A. Heuberger","doi":"10.23919/GEMIC.2018.8335040","DOIUrl":"https://doi.org/10.23919/GEMIC.2018.8335040","url":null,"abstract":"In the design process of base stations, reliability and maintenance expenses are probably the dominant optimization targets. Yet, it was observed, that especially energy efficiency and environmental sustainability have been emerging concerns in the layout of base station systems in recent years. This process established the term of a Green Base Station, a base station that is operated by a hybrid energy feed via the mains grid and regenerative energy resources like wind and sun. In a previous paper related to the so-called BATS project, we introduced the design of a Low Power Wide Area (LPWA) sensor network base station, receiving vitality data of sensor nodes attached to bats. In this paper, we present the extension of the aforementioned telemetry-related base station in line with the Green Base Station concept, aiming at a self-sustaining operation. Therefor, the hardware design of a specialized Power Management Unit (PMU) is presented, serving the needs of telemetry base stations in the BATS project. Moreover, we address the software framework that runs the PMU and illustrate the design considerations of both, its hardware and software modules. Initial results of a field trial in Berlin, Germany are presented, showing possibilities for even further improvements.","PeriodicalId":376459,"journal":{"name":"2018 11th German Microwave Conference (GeMiC)","volume":"22 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":"126770761","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
Fast and accurate tuning of a cross-coupled split-ring resonator filter 交叉耦合分环谐振器滤波器的快速准确调谐
2018 11th German Microwave Conference (GeMiC) Pub Date : 2018-03-12 DOI: 10.23919/GEMIC.2018.8335047
C. Schuster, E. Polat, R. Jakoby, H. Maune, Daniel Miek, M. Höft
{"title":"Fast and accurate tuning of a cross-coupled split-ring resonator filter","authors":"C. Schuster, E. Polat, R. Jakoby, H. Maune, Daniel Miek, M. Höft","doi":"10.23919/GEMIC.2018.8335047","DOIUrl":"https://doi.org/10.23919/GEMIC.2018.8335047","url":null,"abstract":"This work addresses the design and tuning of a cross-coupled split-ring microstrip resonator filter. The filter is designed for a center frequency of 1.65 GHz while having a bandwidth of 65 MHz. The selectivity of the filter is increased by introducing a cross coupling between the first and fourth resonator generating two transmission zeros. Tunability is achieved by using thin film barium strontium titanate (BST) varactors with which the center frequency of each resonator is tunable. Furthermore, they enable tuning of the coupling between resonator one and two and resonator three and four. A fast and accurate tuning of the proposed filter is achieved by using the Cauchy-method algorithm and an implementation of a powerful optimization technique. As a result, a more reliable algorithm is obtained for a better fitting between coupling matrix and measured s-parameters. The robustness of the algorithm is demonstrated by extracting the coupling matrix of a strong detuned filter tuning state.","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":"127321058","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
Crosstalk analysis and correction in on-wafer measurements at WR-3 band frequencies WR-3波段片上测量的串扰分析与校正
2018 11th German Microwave Conference (GeMiC) Pub Date : 2018-03-12 DOI: 10.23919/GEMIC.2018.8335054
D. Müller, F. Boes, A. Tessmann, A. Leuther, T. Zwick, I. Kallfass
{"title":"Crosstalk analysis and correction in on-wafer measurements at WR-3 band frequencies","authors":"D. Müller, F. Boes, A. Tessmann, A. Leuther, T. Zwick, I. Kallfass","doi":"10.23919/GEMIC.2018.8335054","DOIUrl":"https://doi.org/10.23919/GEMIC.2018.8335054","url":null,"abstract":"Crosstalk between radio frequency probes degrades the accuracy in on-wafer measurements. Although a lot of research to account for the crosstalk influence in the calibration was published, up to now no conclusive procedure is known. In this paper, we show how the crosstalk is affected by the change of measurement environment and present an approach, based on electromagnetic field simulations of the device under test including the probes, how the behavior can be predicted and corrected. To verify the presented concept, a 180° discrete phase shifter operating in the 200–330 GHz frequency range is analyzed and the crosstalk distorted measurement results are successfully corrected.","PeriodicalId":376459,"journal":{"name":"2018 11th German Microwave Conference (GeMiC)","volume":"34 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":"126577725","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
An electronically tuneable inductance with extended frequency range 具有扩展频率范围的电子可调谐电感
2018 11th German Microwave Conference (GeMiC) Pub Date : 2018-03-12 DOI: 10.23919/GEMIC.2018.8335057
S. Loracher, K. Blau, U. Stehr, M. Hein
{"title":"An electronically tuneable inductance with extended frequency range","authors":"S. Loracher, K. Blau, U. Stehr, M. Hein","doi":"10.23919/GEMIC.2018.8335057","DOIUrl":"https://doi.org/10.23919/GEMIC.2018.8335057","url":null,"abstract":"The extension of the usable frequency range of an electronically tuneable inductance circuit is investigated. By means of numerical and analytical studies, the transistor-internal reverse transfer capacitance can be identified as a frequency-limiting element, which must be minimised. This is achieved by circuitry-wise compensation of the capacitive effect by introducing an additional inductance. The concept is verified through measurements of the practical implementation and shows an extension of the frequency range by two octaves throughout the VHF range, which proves beneficial for applications such as broadband matched and tuneable transmission lines, amplifier circuits, oscillators, or filters.","PeriodicalId":376459,"journal":{"name":"2018 11th German Microwave Conference (GeMiC)","volume":"36 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":"129735301","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 robust real-time demodulation scheme for backscatter transponder based wireless positioning systems 基于后向散射应答器的无线定位系统鲁棒实时解调方案
2018 11th German Microwave Conference (GeMiC) Pub Date : 2018-03-12 DOI: 10.23919/GEMIC.2018.8335104
M. Schuetz, M. Vossiek
{"title":"A robust real-time demodulation scheme for backscatter transponder based wireless positioning systems","authors":"M. Schuetz, M. Vossiek","doi":"10.23919/GEMIC.2018.8335104","DOIUrl":"https://doi.org/10.23919/GEMIC.2018.8335104","url":null,"abstract":"In this paper, we present a robust algorithm for demodulation and evaluation of backscatter transponder induced beat signals in wireless positioning systems. In particular, an analysis filter bank based on Goertzel filter is used for signal detection. A particle swarm optimizer controls the configuration of the filter bank and is used to measure the range of the transponder based on spectral evaluation of the beat signal with very high resolution. A Kalman-Filter is applied for optimum estimation of the range with noise suppression. An implementation and system demonstrator based on an heterogeneous FPGA and software implementation with an FMCW radar is presented to evince the proposed demodulation scheme. It allows gapless processing in chirp sequence radar systems and high output rates with high resolution and low noise.","PeriodicalId":376459,"journal":{"name":"2018 11th German Microwave Conference (GeMiC)","volume":"3 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":"133791184","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
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