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2021 IEEE International Conference on Microwaves, Antennas, Communications and Electronic Systems (COMCAS)最新文献

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A Non-Invasive Feed Approach to Excite the Electric Monopole Mode of a Dielectric Resonator Antenna 一种激发介质谐振器天线电单极子模式的非侵入馈电方法
2021 IEEE International Conference on Microwaves, Antennas, Communications and Electronic Systems (COMCAS) Pub Date : 2021-11-01 DOI: 10.1109/comcas52219.2021.9629102
A. Kumar
{"title":"A Non-Invasive Feed Approach to Excite the Electric Monopole Mode of a Dielectric Resonator Antenna","authors":"A. Kumar","doi":"10.1109/comcas52219.2021.9629102","DOIUrl":"https://doi.org/10.1109/comcas52219.2021.9629102","url":null,"abstract":"A non-invasive feeding method to excite the electric monopole mode (TM01δ mode) of a cylindrical dielectric resonator (DR) antenna or DRA is presented. The feed comprises a non-resonant circular metallic patch with four symmetric stubs, fed by a coaxial probe. The monopole mode of the DRA is excited by the patch rather than the probe, hence the need to drill an axial hole in the DR for conventional probe insertion (invasive feed) is avoided. Using ANSYS HFSS simulations, the viability of this new feed is demonstrated and results are compared with that of a probe-fed DRA exciting the same mode.","PeriodicalId":354885,"journal":{"name":"2021 IEEE International Conference on Microwaves, Antennas, Communications and Electronic Systems (COMCAS)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131341204","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
Multiple return analysis for noncoherent pulse compression of periodic coded waveforms 周期编码波形非相干脉冲压缩的多次回波分析
2021 IEEE International Conference on Microwaves, Antennas, Communications and Electronic Systems (COMCAS) Pub Date : 2021-11-01 DOI: 10.1109/comcas52219.2021.9629085
Itzik Cohen, N. Levanon, A. Zadok
{"title":"Multiple return analysis for noncoherent pulse compression of periodic coded waveforms","authors":"Itzik Cohen, N. Levanon, A. Zadok","doi":"10.1109/comcas52219.2021.9629085","DOIUrl":"https://doi.org/10.1109/comcas52219.2021.9629085","url":null,"abstract":"Recently proposed direct-detection laser range finders transmit low power, periodic, unipolar (ON-OFF) coded signal, instead of the commonly used strong narrow single pulse. The combination of non-coherent pulse compression (NCPC) and appropriate binary sequences produces a sidelobe-free periodic delay response. The continuous wave (CW) nature of the signal results in overlaps between returns from multiple targets. When envelope detected, the overlaps can create intermodulation that may hurt the sidelobe-free range response. The paper studies the effect of different sequence types and different envelope detector response profiles and suggests measures to mitigate the influence of multiple targets by calibration of envelope detector.","PeriodicalId":354885,"journal":{"name":"2021 IEEE International Conference on Microwaves, Antennas, Communications and Electronic Systems (COMCAS)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123529997","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
An Iterative Physical Optics (IPO) Approach for Scattering by Penetrable Surfaces 可穿透表面散射的迭代物理光学(IPO)方法
2021 IEEE International Conference on Microwaves, Antennas, Communications and Electronic Systems (COMCAS) Pub Date : 2021-11-01 DOI: 10.1109/comcas52219.2021.9629069
Roi Blumberg, I. Gershenzon, Y. Brick, Semion Duberstein, A. Boag
{"title":"An Iterative Physical Optics (IPO) Approach for Scattering by Penetrable Surfaces","authors":"Roi Blumberg, I. Gershenzon, Y. Brick, Semion Duberstein, A. Boag","doi":"10.1109/comcas52219.2021.9629069","DOIUrl":"https://doi.org/10.1109/comcas52219.2021.9629069","url":null,"abstract":"An iterative physical optics (IPO) algorithm for the analysis of scattering by penetrable acoustically large objects, composed of penetrable and opaque surfaces, is proposed. The scatterer surfaces are assumed in general to be non-convex and multiply connected, such that self-shadowing effects should be accounted for. This is done by extending the shadow radiation IPO (SR-IPO) scheme, developed for the case of impenetrable surface scatterers. For the penetrable surfaces case, the IPO scattering problem formulation is modified in order to make it compatible with the SR-IPO process. The key features of the formulation are discussed and a rudimentary validation of the formulation is presented for an acoustically representative example.","PeriodicalId":354885,"journal":{"name":"2021 IEEE International Conference on Microwaves, Antennas, Communications and Electronic Systems (COMCAS)","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114513746","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
Hybrid C-Tuner IC for 40V/80V Antenna Aperture Tuning Applications 用于40V/80V天线孔径调谐应用的混合c调谐器IC
2021 IEEE International Conference on Microwaves, Antennas, Communications and Electronic Systems (COMCAS) Pub Date : 2021-11-01 DOI: 10.1109/comcas52219.2021.9629061
Oguzhan Oezdamar, Semen Syroiezhin, R. Weigel, A. Hagelauer, V. Solomko
{"title":"Hybrid C-Tuner IC for 40V/80V Antenna Aperture Tuning Applications","authors":"Oguzhan Oezdamar, Semen Syroiezhin, R. Weigel, A. Hagelauer, V. Solomko","doi":"10.1109/comcas52219.2021.9629061","DOIUrl":"https://doi.org/10.1109/comcas52219.2021.9629061","url":null,"abstract":"A monolithically integrated hybrid C-Tuner for antenna aperture tuning applications in handheld cellular devices is presented in the paper. The single C-Tuner design fulfils the requirements for both mid- and high-voltage handling classes, offering an universal solution for aperture capacitive tuners. The configuration of the operating mode (voltage class) is performed on the application level. The integrated circuit (IC) has been designed and fabricated in a dedicated CMOS RF-switch technology. The measured IC has reached 44 V / 85 V RF voltage handling with the capacitance tuning range of 668 fF – 6 pF / 371 fF – 1.8 pF in mid-/high-voltage operating modes respectively.","PeriodicalId":354885,"journal":{"name":"2021 IEEE International Conference on Microwaves, Antennas, Communications and Electronic Systems (COMCAS)","volume":"56 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116640539","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
Ultra-Wideband Transmission Lines on Complex Structures via Extendable Aerosol Jet 3D-Printing 可扩展气溶胶喷射3d打印技术在复杂结构上的超宽带传输线
2021 IEEE International Conference on Microwaves, Antennas, Communications and Electronic Systems (COMCAS) Pub Date : 2021-11-01 DOI: 10.1109/comcas52219.2021.9629015
Xenofon Konstantinou, M. Craton, J. Albrecht, J. Papapolymerou
{"title":"Ultra-Wideband Transmission Lines on Complex Structures via Extendable Aerosol Jet 3D-Printing","authors":"Xenofon Konstantinou, M. Craton, J. Albrecht, J. Papapolymerou","doi":"10.1109/comcas52219.2021.9629015","DOIUrl":"https://doi.org/10.1109/comcas52219.2021.9629015","url":null,"abstract":"This work focuses on the unique capabilities that aerosol jet printing (AJP) provides for manufacturing components and electronics on complex structures and surfaces. We demonstrate the realization of ultra-wideband (UWB) mm-wave transmission lines (TLs) on complex structures via extendable AJP technology. This is the first UWB mm-wave component fully fabricated via additive manufacturing (AM) on complex structures with nonplanar features as high as 5 mm. TLs are printed utilizing conductive and nonconductive inks on brass conformal and ramped carriers with nonplanar features of different sizes. The TLs are measured in a wide frequency range up to 110 GHz and yield losses similar to other AM components with much smaller or no nonplanar features, while performance remains relatively unaffected by feature size changes. These results exhibit the great potential of AJP as an extendable manufacturing technology for electronics on complex structures for future UWB and mm-wave applications.","PeriodicalId":354885,"journal":{"name":"2021 IEEE International Conference on Microwaves, Antennas, Communications and Electronic Systems (COMCAS)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114074586","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 Novel Approach for Characterization of Transient Signals Using the Phase Diagram Features 一种利用相图特征表征暂态信号的新方法
2021 IEEE International Conference on Microwaves, Antennas, Communications and Electronic Systems (COMCAS) Pub Date : 2021-11-01 DOI: 10.1109/comcas52219.2021.9629068
Denis Stanescu, A. Digulescu, C. Ioana, A. Serbanescu
{"title":"A Novel Approach for Characterization of Transient Signals Using the Phase Diagram Features","authors":"Denis Stanescu, A. Digulescu, C. Ioana, A. Serbanescu","doi":"10.1109/comcas52219.2021.9629068","DOIUrl":"https://doi.org/10.1109/comcas52219.2021.9629068","url":null,"abstract":"Transient signals are found in many areas of interest, where they provide information about the analyzed system. One of these areas is given by power engineering applications. The predictive maintenance of the electrical infrastructures is based on the study and characterization of the partial discharge activities. Detecting these phenomena is a complicated task and currently there are various theoretical and practical studies designed to deal with partial discharges. Despite the many approaches proposed, there is no precise method of describing this phenomenon. Thus, our paper presents a new approach based on the evaluation of transient phenomena detected in a power grid, through the entropy of the system in phase space. Also, using a set of spatial descriptors, the partial discharges will be able to be properly characterized.","PeriodicalId":354885,"journal":{"name":"2021 IEEE International Conference on Microwaves, Antennas, Communications and Electronic Systems (COMCAS)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126409831","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
Spiking Neural Networks based Rate-Coded Logic Gates for Automotive Applications in BiCMOS 基于脉冲神经网络的速率编码逻辑门在汽车BiCMOS中的应用
2021 IEEE International Conference on Microwaves, Antennas, Communications and Electronic Systems (COMCAS) Pub Date : 2021-11-01 DOI: 10.1109/comcas52219.2021.9629011
Hendrik M. Lehmann, Julian Hille, Cyprian Grassmann, V. Issakov
{"title":"Spiking Neural Networks based Rate-Coded Logic Gates for Automotive Applications in BiCMOS","authors":"Hendrik M. Lehmann, Julian Hille, Cyprian Grassmann, V. Issakov","doi":"10.1109/comcas52219.2021.9629011","DOIUrl":"https://doi.org/10.1109/comcas52219.2021.9629011","url":null,"abstract":"Spiking Neural Networks (SNNs) represent the third generation of artificial neural networks. In this work, we evaluate the core element of SNN, the neuron circuit equivalent, in terms of temperature robustness for automotive applications. Thanks to the operating point stabilization, the proposed circuit-level neuron implementation achieves a broad frequency tuning range up to 42 MHz and operates over a wide temperature range from −40 °C to 125 °C. At the maximum spiking frequency of 42 MHz, the circuit consumes a DC power of only 300 nW. We use the proposed neuron circuit to realize two fundamental logic gates, AND and OR, by means of analog rate-encoded spiking neural networks. To the best of the authors’ knowledge, these are the first reported SNN-based logic gates measured over the automotive temperature range. We showcase the suitability of SNN circuit implementation for automotive applications. The circuits are realized in a 130 nm BiCMOS.","PeriodicalId":354885,"journal":{"name":"2021 IEEE International Conference on Microwaves, Antennas, Communications and Electronic Systems (COMCAS)","volume":"56 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128449846","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
Improving Driving Safety by Preventing Driver Distraction 防止驾驶员分心，提高驾驶安全
2021 IEEE International Conference on Microwaves, Antennas, Communications and Electronic Systems (COMCAS) Pub Date : 2021-11-01 DOI: 10.1109/comcas52219.2021.9629018
Yiftach Richter, O. Malka, Meir Grossman, Aviram Meidan
{"title":"Improving Driving Safety by Preventing Driver Distraction","authors":"Yiftach Richter, O. Malka, Meir Grossman, Aviram Meidan","doi":"10.1109/comcas52219.2021.9629018","DOIUrl":"https://doi.org/10.1109/comcas52219.2021.9629018","url":null,"abstract":"This paper presents a novel system designed to detect and prevent driver distraction caused by the use of mobile phones while driving. The Phone-Locating-Unit (PLU) is based on a multi-modal approach that exploits inputs from several sensors. In-cabin cellular activity and Inertial Measurement Unit (IMU) information is supplemented by additional information on wireless in-cabin activity. The challenges we faced when designing the PLU, compared to classical RSSI systems is the near-field multipath impediment, and the small number of antennas in the vehicle. On the other hand, only a binary decision is required, whether the emitter is used by the driver or not. The system also employs Neural Networks (NN) and Machine-Learning (ML) to fuse the IMU information. We detail the propagation model and in-cabin field measurements and show that the PLU can detect and prevent drivers from being distracted without any prior knowledge of the number of smartphones, their incabin locations, or the number of passengers in the vehicle. We demonstrate the effectiveness of the approach to accurately detect in cabin cellular activity, with a clear distinction between driver and passenger activity, despite the unique and challenging characteristics of the in-cabin propagation channel.","PeriodicalId":354885,"journal":{"name":"2021 IEEE International Conference on Microwaves, Antennas, Communications and Electronic Systems (COMCAS)","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131635296","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
H-Polarized Terahertz Wave Scattering from On-Substrate Graphene Strip Grating: Electromagnetically Induced Transparency 基板上石墨烯带状光栅的h偏振太赫兹波散射:电磁感应透明
2021 IEEE International Conference on Microwaves, Antennas, Communications and Electronic Systems (COMCAS) Pub Date : 2021-11-01 DOI: 10.1109/comcas52219.2021.9629081
Fedir O. Yevtushenko
{"title":"H-Polarized Terahertz Wave Scattering from On-Substrate Graphene Strip Grating: Electromagnetically Induced Transparency","authors":"Fedir O. Yevtushenko","doi":"10.1109/comcas52219.2021.9629081","DOIUrl":"https://doi.org/10.1109/comcas52219.2021.9629081","url":null,"abstract":"We analyze numerically the H-polarized plane wave scattering and absorption by an infinite grating of flat graphene strips lying on a dielectric substrate of finite thickness. The full-wave treatment is based on the analytical semi-inversion, performed with the aid of explicit solution of the Riemann-Hilbert Problem. The result of this procedure is a Fredholm second-kind infinite matrix equation for the Floquet harmonic amplitudes. Thus, the corresponding code is meshless and has a guaranteed convergence. Numerical results show that if the strip width and periodicity have microsize dimensions such a metasurface demonstrates complicated frequency-selective behavior. Namely, three natural mode types with different Q-factors are present: substrate modes, plasmon strip modes, and lattice modes. The latter modes do not exist if the substrate is absent and can have ultra-high Q-factors. As graphene’s conductivity depends on its chemical potential, the transparency and reflectivity of such a metasurface can be tuned in wide range. However, the tunability is spoiled at the lattice-mode resonances.","PeriodicalId":354885,"journal":{"name":"2021 IEEE International Conference on Microwaves, Antennas, Communications and Electronic Systems (COMCAS)","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133991234","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
Science and Politics of Base Station Electromagnetic Field Risks 基站电磁场风险的科学与政治
2021 IEEE International Conference on Microwaves, Antennas, Communications and Electronic Systems (COMCAS) Pub Date : 2021-11-01 DOI: 10.1109/comcas52219.2021.9629038
Haim Mazar Madjar, D. Ball
{"title":"Science and Politics of Base Station Electromagnetic Field Risks","authors":"Haim Mazar Madjar, D. Ball","doi":"10.1109/comcas52219.2021.9629038","DOIUrl":"https://doi.org/10.1109/comcas52219.2021.9629038","url":null,"abstract":"The current science-based approach to ensuring public safety from RF-EMF base stations is described, and a potential misframing of the debate as a purely scientific issue, which in turn led to inappropriate risk communication exercises, is pointed to. Plausibly, this polarised and charged the situation by disenfranchising other potentially legitimate siting concerns. While the primary health recommendation remains unchanged, namely, to follow the guidelines set by the science-based ICNIRP and IEEE expert groups, and to limit the ICNIRP 2020 and IEEE 95.12019 power density exposure level for general-public: between 400 – 2000 MHz fMHz/200 (W/m2) and 10 (W/m2) above 2000 MHz, other legitimate concerns should not be disregarded.","PeriodicalId":354885,"journal":{"name":"2021 IEEE International Conference on Microwaves, Antennas, Communications and Electronic Systems (COMCAS)","volume":"61 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134284518","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
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