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Tunable frequency selective radome with broadband absorbing properties 具有宽带吸收特性的可调谐频率选择天线罩
2017 Progress In Electromagnetics Research Symposium - Spring (PIERS) Pub Date : 2017-05-22 DOI: 10.1109/PIERS.2017.8262168
Hong Zhu, Jingjian Huang, N. Yuan, Bo Yi
{"title":"Tunable frequency selective radome with broadband absorbing properties","authors":"Hong Zhu, Jingjian Huang, N. Yuan, Bo Yi","doi":"10.1109/PIERS.2017.8262168","DOIUrl":"https://doi.org/10.1109/PIERS.2017.8262168","url":null,"abstract":"Radar radome based on frequency selective surface(FSS) can be used not only to protect antenna from physical damage caused by wind or rain, but also to reduce the radar cross section (RCS) by reflecting the incident wave to unimportant direction or absorbing the incident wave. In this paper, a miniaturized and tunable frequency selective structure with wideband absorbing property is designed for the application of radar radome. To avoid the problem that the periodicity of the bandpass FSS should larger than that of resistive FSS, in our design, the varactor diodes are loaded on the band-pass FSS to achieve the operating frequency adjustability and miniaturize the periodicity of FSS. Through proper adjustment, the periodicity of resistive FSS can be equal to that of bandpass FSS. The period of FSS is equal to 10 mm, which is only λ/30. Moreover, the passband frequency is able to tune from below 0.5 GHz to 1.14 GHz by adjusting the voltage between the diodes. This property allows the designed FSS structure to be able to apply for the frequency hopping communication. The miniaturized elements may improve the angle stability and delay the lowest frequency at which the grating lobe appears. Besides, the double square loops loaded with lumped resistors are used to absorb the incident wave in absorptive band and to achieve the polarization independent property of the designed FSS. The simulation results show that the designed FSS has well absorbing performance from 6.8 GHz to 24 GHz, and the polarization of incident wave has little influence on its transmission and absorbing properties.","PeriodicalId":387984,"journal":{"name":"2017 Progress In Electromagnetics Research Symposium - Spring (PIERS)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2017-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128011322","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
The CW-laser ablation of resonant silicon NPs in liquid 液体中谐振硅NPs的cw激光烧蚀
2017 Progress In Electromagnetics Research Symposium - Spring (PIERS) Pub Date : 2017-05-22 DOI: 10.1109/PIERS.2017.8262345
A. Osipov, S. Arakelian, A. Evlukhin, S. Kutrovskaya
{"title":"The CW-laser ablation of resonant silicon NPs in liquid","authors":"A. Osipov, S. Arakelian, A. Evlukhin, S. Kutrovskaya","doi":"10.1109/PIERS.2017.8262345","DOIUrl":"https://doi.org/10.1109/PIERS.2017.8262345","url":null,"abstract":"The paper demonstrates that the laser ablation approach can be used for synthesis (with average nanoparticle size control) of silicon nanoparticles supporting strong resonant optical responses in the visible spectral range. Porous and monolithic crystalline silicon targets are considered. The generated colloidal solutions have been used for the formation of one-layered covering composed of silicon nanoparticles. The obtained results may be used for the realization of many functional metasurfaces consisting of randomly distributed resonant nanoparticles.","PeriodicalId":387984,"journal":{"name":"2017 Progress In Electromagnetics Research Symposium - Spring (PIERS)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2017-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125594273","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
Digital beamforming based on FPGA for phased array radar 基于FPGA的相控阵雷达数字波束形成
2017 Progress In Electromagnetics Research Symposium - Spring (PIERS) Pub Date : 2017-05-22 DOI: 10.1109/PIERS.2017.8261779
Wenjing Shang, Z. Dou, Wei Xue, Yingsong Li
{"title":"Digital beamforming based on FPGA for phased array radar","authors":"Wenjing Shang, Z. Dou, Wei Xue, Yingsong Li","doi":"10.1109/PIERS.2017.8261779","DOIUrl":"https://doi.org/10.1109/PIERS.2017.8261779","url":null,"abstract":"Beamforming is a significant signal processing technique which can achieve high gain and low sidelobe. It has been widely studied and integrated into various radar systems. In this paper, we mainly focus on the realization of high-speed data sampling, storage and multi-beam forming realizing on FPGA platform. The designed scheme can be integrated with RF circuit to construct a joint test system for evaluating high speed radar systems through Ethernet interfaces. The FPGA based DBF system with low cost can facilitate the design flexibility and reliability, which is also easy to upgrade in practical engineering.","PeriodicalId":387984,"journal":{"name":"2017 Progress In Electromagnetics Research Symposium - Spring (PIERS)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2017-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127947826","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
Improving the efficiency of the transformer rectifier unit for the aerospace area 提高航空航天领域变压器整流装置的效率
2017 Progress In Electromagnetics Research Symposium - Spring (PIERS) Pub Date : 2017-05-22 DOI: 10.1109/PIERS.2017.8262248
F. Ismagilov, V. Vavilov, D. Gusakov, Z. Yalalova, A. Mednov
{"title":"Improving the efficiency of the transformer rectifier unit for the aerospace area","authors":"F. Ismagilov, V. Vavilov, D. Gusakov, Z. Yalalova, A. Mednov","doi":"10.1109/PIERS.2017.8262248","DOIUrl":"https://doi.org/10.1109/PIERS.2017.8262248","url":null,"abstract":"This paper is devoted to improving the efficiency of the transformer rectifier unit for the aerospace area by the use of amorphous steel as a magnetic core and by the use of the heat-resistance wire. The selection of the optimal amorphous steel is made and the heat-resistance wire chosen. Numerical calculation of the transformer rectifier unit was made, the weight of winding and magnetic core and idling losses were defined. Computer modeling of electromagnetic processes was made to define the current and voltage amplitude and form. Computer modeling of thermal processes was made to check the temperature of the transformer rectifier unit heating. In the conclusion, the pilot study of the transformer rectifier unit was made to confirm the operability and efficiency.","PeriodicalId":387984,"journal":{"name":"2017 Progress In Electromagnetics Research Symposium - Spring (PIERS)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2017-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132074150","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
Purcell factor enhancement by dielectric nanoantennas for nanodiamonds with NV-centers 介质纳米天线增强nv中心纳米金刚石的Purcell因子
2017 Progress In Electromagnetics Research Symposium - Spring (PIERS) Pub Date : 2017-05-22 DOI: 10.1109/PIERS.2017.8261719
A. Zalogina, R. S. Saveliev, I. Shadrivov, D. Zuev, P. Belov
{"title":"Purcell factor enhancement by dielectric nanoantennas for nanodiamonds with NV-centers","authors":"A. Zalogina, R. S. Saveliev, I. Shadrivov, D. Zuev, P. Belov","doi":"10.1109/PIERS.2017.8261719","DOIUrl":"https://doi.org/10.1109/PIERS.2017.8261719","url":null,"abstract":"Nitrogen-vacancy centers in nanodiamonds are ideal candidates for realization of effective single photon sources. Here, we consider the interaction between the nitrogen-vacancy center and the high-index dielectric nanoparticle. Numerically calculated spectral dependencies of enhancement factor of the emission rate for two different geometries are presented. The results show that ∼5-fold enhancement of the emission rate can be achieved with a single dielectric nanoparticle.","PeriodicalId":387984,"journal":{"name":"2017 Progress In Electromagnetics Research Symposium - Spring (PIERS)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2017-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128843336","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
Multi-band frequency tunable LTE antenna for mobile phone applications 用于移动电话应用的多频段频率可调LTE天线
2017 Progress In Electromagnetics Research Symposium - Spring (PIERS) Pub Date : 2017-05-22 DOI: 10.1109/PIERS.2017.8261878
B. Ozbakis, S. Okuyucu, M. Seemen, K. Yeğin
{"title":"Multi-band frequency tunable LTE antenna for mobile phone applications","authors":"B. Ozbakis, S. Okuyucu, M. Seemen, K. Yeğin","doi":"10.1109/PIERS.2017.8261878","DOIUrl":"https://doi.org/10.1109/PIERS.2017.8261878","url":null,"abstract":"The progress shown in mobile phone technology in dealing with multiple band transmission and high data transmission rates has been followed by an increased demand in favor of rich content mobile services and new functionalities. To provide these services, multi-band and wide-band antennas have to be integrated into the compact structure of modern mobile phones. In this paper, as part of the results of a research project, we propose a multi-band, frequency reconfigurable main antenna along with a receive diversity antenna for use in 4G (4th generation) mobile terminals. The main antenna is a Planar Inverted F Antenna (PIFA) mounted on bottom of the mobile phone and grounded by a variable reactance for operation in 790–960 MHz and 1710–2690 bands covering GSM, DCS, PCS and UMTS standards. The receive diversity antenna on the other hand is a monopole antenna to be operated in the 1710–2690 MHz band. Use of LDS (laser direct structuring) structure in both antennas are proposed for fine-tuning of their response. Simulated frequency responses of reflection coefficients and radiation patterns of the prototype antennas are given.","PeriodicalId":387984,"journal":{"name":"2017 Progress In Electromagnetics Research Symposium - Spring (PIERS)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2017-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117252119","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 3D unidirectional antenna for microwave application 一种用于微波应用的三维单向天线
2017 Progress In Electromagnetics Research Symposium - Spring (PIERS) Pub Date : 2017-05-22 DOI: 10.1109/PIERS.2017.8262400
Md. Amanath Ullah, T. Alam, S. Abdullah, M. F. Mansor, N. Misran, M. Islam
{"title":"A 3D unidirectional antenna for microwave application","authors":"Md. Amanath Ullah, T. Alam, S. Abdullah, M. F. Mansor, N. Misran, M. Islam","doi":"10.1109/PIERS.2017.8262400","DOIUrl":"https://doi.org/10.1109/PIERS.2017.8262400","url":null,"abstract":"A three dimensional unidirectional antenna for applications in lower microwave frequency is presented in this paper. Directivity and lower band operation are main design consideration of the proposed antenna. The proposed antenna provides 70 MHz of operating bandwidth operating at 1.70–1.77 GHz. The peak gain of the antenna is found to be 3.42 dBi. The dimension of the 3D structure is 40 × 20 × 10 mm3. Two 0.2 mm thick and 45 mm long walls are used as reflectors. They are used to provide enhanced directivity and gain on the two sides of the folded three dimensional radiating element. Existence of dense current on the upper radiating element along with the two reflectors are responsible for directive radiation pattern. The design of the 3D radiating element is simple enough to be fabricated using stamping metal sheet method. 3D over 2D structure is used because 3D structures can use the whole volume for impedance matching and can provide good radiation characteristics, which validates the radiation pattern of the proposed antenna. The simulation work of the proposed design is performed under Computer Simulation Technology (CST) Microwave Studio software. 0.2 mm thick copper metal is used as the antenna material for simulation purpose, as Copper material is low in cost and durable. Operating band within lower microwave frequency, compact structure, satisfactory gain, unidirectional radiation characteristics make the proposed antenna a potential candidate to be used for microwave imaging in various fields of medical diagnosis like human head imaging, microwave imaging for breast cancer detection, microwave imaging for heart failure detection etc.","PeriodicalId":387984,"journal":{"name":"2017 Progress In Electromagnetics Research Symposium - Spring (PIERS)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2017-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128886876","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
Broadband eight-way coaxial waveguide high power combiner/divider 宽带八路同轴波导高功率合并/分频器
2017 Progress In Electromagnetics Research Symposium - Spring (PIERS) Pub Date : 2017-05-22 DOI: 10.1109/PIERS.2017.8262050
Mohsen Abdolahi, M. Sabahi, Zohre Pourgholamhossein, H. Sadeghi
{"title":"Broadband eight-way coaxial waveguide high power combiner/divider","authors":"Mohsen Abdolahi, M. Sabahi, Zohre Pourgholamhossein, H. Sadeghi","doi":"10.1109/PIERS.2017.8262050","DOIUrl":"https://doi.org/10.1109/PIERS.2017.8262050","url":null,"abstract":"This article proposes two broadband eight-way coaxial combiner/dividerat 4–14 GHz frequency range. Two structures are introduced and designed based on physical limitation of structure and the best reflection coefficient through multi section and Klopfenstein taper matching. In multi section matching, a central coaxial line to peripheral coaxial line transition is employed to realize the circuit model elements values and, thus, achieve an excellent matching over frequency range. In second design, a combination of central coaxial line to peripheral coaxial line transition and Klopfenstein taper is employed to achieve an excellent wide band matching. Simulated structures have more than three octave bandwidth from 4 to 14 GHz for a return loss greater than 10 dB. The field strength simulation of the structure at 9 GHz with 20-KW output power shows that the maximum electric field that occurs on the sharp edges is ten times lower than the air-dielectric breakdown voltage, which is the typical maximum peak power handling of 7/16 connectors.","PeriodicalId":387984,"journal":{"name":"2017 Progress In Electromagnetics Research Symposium - Spring (PIERS)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2017-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128773671","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
Mutual phase locking of the magnetoelectric spin-torque nanooscillators 磁电自旋转矩纳米振荡器的互锁相
2017 Progress In Electromagnetics Research Symposium - Spring (PIERS) Pub Date : 2017-05-22 DOI: 10.1109/PIERS.2017.8261921
A. Safin, N. Udalov, M. Bichurin, R. Petrov, A. Tatarenko
{"title":"Mutual phase locking of the magnetoelectric spin-torque nanooscillators","authors":"A. Safin, N. Udalov, M. Bichurin, R. Petrov, A. Tatarenko","doi":"10.1109/PIERS.2017.8261921","DOIUrl":"https://doi.org/10.1109/PIERS.2017.8261921","url":null,"abstract":"In this work the mutual phase locking theory of the nonidentical magnetoelectric spin-torque nanooscillators, which is based on the macrospin approximation, considering the theory of nonlinear oscillations, is developed. We calculate the output power of the network of mutually coupled spin-torque oscillators and output frequency in the phase-locked regime. We introduce a generalization of this approach to the networks of spin-torque nanooscillators and noises systems. Magnetoelectric spin-torque oscillators are based on the two nanosized ferromagnetic layers La2/3Sr1/3MnO3 (LSMO) and Au separated by barrier multiferroic layer (2nm thickness) La0.1Bi0.9MnO3 (LBMO) mediated by dc-current.","PeriodicalId":387984,"journal":{"name":"2017 Progress In Electromagnetics Research Symposium - Spring (PIERS)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2017-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126492193","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
MW holographic imaging system for detection of hidden dinosaur tracks 用于探测隐藏恐龙足迹的MW全息成像系统
2017 Progress In Electromagnetics Research Symposium - Spring (PIERS) Pub Date : 2017-05-22 DOI: 10.1109/PIERS.2017.8262316
S. Ivashov, M. Chizh, A. Zhuravlev, V. Razevig, T. Bechtel, L. Capineri, M. Inagaki
{"title":"MW holographic imaging system for detection of hidden dinosaur tracks","authors":"S. Ivashov, M. Chizh, A. Zhuravlev, V. Razevig, T. Bechtel, L. Capineri, M. Inagaki","doi":"10.1109/PIERS.2017.8262316","DOIUrl":"https://doi.org/10.1109/PIERS.2017.8262316","url":null,"abstract":"Dinosaurs are an interesting group of ancient animals, the study of which can give valuable information about the evolution of life on the Earth. Study of their fossilized tracks can provide information not only about these animals' morphology, but also their behavior. Until now, research has been limited to dinosaur tracks and trackways fortuitously exposed on rock surfaces. The use of subsurface imaging radar provides the potential to detect tracks that remain hidden by younger strata in cases where a dielectric contrast exists between the layers, or a dielectrically anomalous film separates the track mold from overlying cast. In this paper the possibility of using the method of holographic subsurface radar to detect hidden tracks of dinosaurs is investigated. Research was carried out under laboratory conditions on a gypsum plaster mold and cast of an Anamoepus track using a radar scanning system operating in different bands at centimeter wavelengths.","PeriodicalId":387984,"journal":{"name":"2017 Progress In Electromagnetics Research Symposium - Spring (PIERS)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2017-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132931693","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
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