Pub Date : 2016-06-01DOI: 10.1109/APS.2016.7695725
M. M. Elsewe, D. Chatterjee
The Theory of Characteristic Modes is proposed as a systematic approach to antenna design to achieve the goal of finding the antenna structure with optimum broadband behavior. This theory provides a physical insight to the radiating nature of microstrip patch antennas and reduces the design optimization time. In this paper, the resonant behavior of different excitation feed probes are analyzed using this theory. The modal analysis concludes that a T-probe feed structure is more resonant and would be a good candidate to achieve the highest impedance bandwidth.
{"title":"Characteristic mode analysis of excitation feed probes in microstrip patch antennas","authors":"M. M. Elsewe, D. Chatterjee","doi":"10.1109/APS.2016.7695725","DOIUrl":"https://doi.org/10.1109/APS.2016.7695725","url":null,"abstract":"The Theory of Characteristic Modes is proposed as a systematic approach to antenna design to achieve the goal of finding the antenna structure with optimum broadband behavior. This theory provides a physical insight to the radiating nature of microstrip patch antennas and reduces the design optimization time. In this paper, the resonant behavior of different excitation feed probes are analyzed using this theory. The modal analysis concludes that a T-probe feed structure is more resonant and would be a good candidate to achieve the highest impedance bandwidth.","PeriodicalId":6496,"journal":{"name":"2016 IEEE International Symposium on Antennas and Propagation (APSURSI)","volume":"4 1","pages":"33-34"},"PeriodicalIF":0.0,"publicationDate":"2016-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76257061","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}
Pub Date : 2016-06-01DOI: 10.1109/APS.2016.7695935
Wen-Ao Li, Zhihong Tu, Yan-Yan Liu
In this letter, a dual-band differential CPW-fed MIMO antenna for Worldwide Interoperability for Microwave Access (WiMAX) application is proposed. The antenna has a square ring ground and a common patch which is shared by two pairs of differentially-fed ports. By arranging two pairs of differential ports orthogonally in the virtual ac ground of each other, the differential isolation can be infinite theoretically without using decoupling structures and dual-polarization are obtained. Since all of the structures are printed on the same layer of the substrate, it can be fabricated easily and is very suitable to be integrated with RF front-end circuits. The measured dual bands are 3.2-3.87 GHz and 5.35-5.83 GHz, along with high isolation better than 35 dB. Simulated and measured results agree well with each other.
{"title":"High isolation, dual-polarized & dual-band single-layer differential MIMO antenna for WiMAX application","authors":"Wen-Ao Li, Zhihong Tu, Yan-Yan Liu","doi":"10.1109/APS.2016.7695935","DOIUrl":"https://doi.org/10.1109/APS.2016.7695935","url":null,"abstract":"In this letter, a dual-band differential CPW-fed MIMO antenna for Worldwide Interoperability for Microwave Access (WiMAX) application is proposed. The antenna has a square ring ground and a common patch which is shared by two pairs of differentially-fed ports. By arranging two pairs of differential ports orthogonally in the virtual ac ground of each other, the differential isolation can be infinite theoretically without using decoupling structures and dual-polarization are obtained. Since all of the structures are printed on the same layer of the substrate, it can be fabricated easily and is very suitable to be integrated with RF front-end circuits. The measured dual bands are 3.2-3.87 GHz and 5.35-5.83 GHz, along with high isolation better than 35 dB. Simulated and measured results agree well with each other.","PeriodicalId":6496,"journal":{"name":"2016 IEEE International Symposium on Antennas and Propagation (APSURSI)","volume":"30 1","pages":"453-454"},"PeriodicalIF":0.0,"publicationDate":"2016-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85520317","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}
Pub Date : 2016-06-01DOI: 10.1109/APS.2016.7696188
Rabia Yahya, A. Nakamura, M. Itami
In this paper, we propose the design of a new bandpass frequency selective surface (FSS) with tightly coupled elements for ultra-wideband (UWB) applications. The proposed FSS is constituted of two layers, of periodic array of crossed metallic tapered dipoles, separated by a ground plane and connected via twin wire transmission lines. The size of the unit cell is 0.165λ*0.165λ and its thickness is 0.2λ, where λ is the wavelength at the lower frequency of operation. Which make it much smaller than the conventional multi-layer high-order FSSs. Furthermore, it provides flat band-pass response over UWB band, which is proved through numerical simulation.
{"title":"3D UWB band-pass frequency selective surface","authors":"Rabia Yahya, A. Nakamura, M. Itami","doi":"10.1109/APS.2016.7696188","DOIUrl":"https://doi.org/10.1109/APS.2016.7696188","url":null,"abstract":"In this paper, we propose the design of a new bandpass frequency selective surface (FSS) with tightly coupled elements for ultra-wideband (UWB) applications. The proposed FSS is constituted of two layers, of periodic array of crossed metallic tapered dipoles, separated by a ground plane and connected via twin wire transmission lines. The size of the unit cell is 0.165λ*0.165λ and its thickness is 0.2λ, where λ is the wavelength at the lower frequency of operation. Which make it much smaller than the conventional multi-layer high-order FSSs. Furthermore, it provides flat band-pass response over UWB band, which is proved through numerical simulation.","PeriodicalId":6496,"journal":{"name":"2016 IEEE International Symposium on Antennas and Propagation (APSURSI)","volume":"33 1","pages":"959-960"},"PeriodicalIF":0.0,"publicationDate":"2016-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78333363","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}
Pub Date : 2016-06-01DOI: 10.1109/APS.2016.7696153
F. Monticone, A. Alú
We study the extreme and singular electromagnetic response of epsilon-near-zero (ENZ) structures. In particular, we show that ENZ-dielectric-ENZ multilayers can be designed to support: (a) singularities in their scattering spectrum, known as embedded eigenstates, which can be exploited for extreme light trapping in open systems, as well as for enhanced sensing; (b) peaks in their photonic density of states, or Van-Hove singularities, which determine strong enhancement of emission/radiation from small sources. Our findings shed light on the physics of these extreme electromagnetic effects, and represent an important step toward their application in various practical scenarios.
{"title":"Scattering and radiation singularities in epsilon-near-zero structures","authors":"F. Monticone, A. Alú","doi":"10.1109/APS.2016.7696153","DOIUrl":"https://doi.org/10.1109/APS.2016.7696153","url":null,"abstract":"We study the extreme and singular electromagnetic response of epsilon-near-zero (ENZ) structures. In particular, we show that ENZ-dielectric-ENZ multilayers can be designed to support: (a) singularities in their scattering spectrum, known as embedded eigenstates, which can be exploited for extreme light trapping in open systems, as well as for enhanced sensing; (b) peaks in their photonic density of states, or Van-Hove singularities, which determine strong enhancement of emission/radiation from small sources. Our findings shed light on the physics of these extreme electromagnetic effects, and represent an important step toward their application in various practical scenarios.","PeriodicalId":6496,"journal":{"name":"2016 IEEE International Symposium on Antennas and Propagation (APSURSI)","volume":"429 1","pages":"889-890"},"PeriodicalIF":0.0,"publicationDate":"2016-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78351506","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}
Pub Date : 2016-06-01DOI: 10.1109/APS.2016.7696765
S. J. Watt, E. Alwan, J. Volakis
In simultaneous transmit and receive (STAR) systems, multi-tap RF self-interference cancellation (RF-SIC) filters are employed to prevent receiver saturation and achieve STAR communication. Specifically, RF-SIC filters aim to reproduce the frequency response of the interference channel between the transmit and receive antennas. In this paper, we apply ABCD-parameters, Y-parameters, and S-parameters to analyze the performance of a wideband RF-SIC filter design incorporating variable delays and coefficients. Numerical MATLAB calculations demonstrate strong agreement (<; 2% error) with Advanced Design System (ADS) circuit simulations for a three-tap filter from 2 GHz-8 GHz.
{"title":"Cascaded network analysis of a wideband RF self-interference cancellation (RF-SIC) filter for STAR systems","authors":"S. J. Watt, E. Alwan, J. Volakis","doi":"10.1109/APS.2016.7696765","DOIUrl":"https://doi.org/10.1109/APS.2016.7696765","url":null,"abstract":"In simultaneous transmit and receive (STAR) systems, multi-tap RF self-interference cancellation (RF-SIC) filters are employed to prevent receiver saturation and achieve STAR communication. Specifically, RF-SIC filters aim to reproduce the frequency response of the interference channel between the transmit and receive antennas. In this paper, we apply ABCD-parameters, Y-parameters, and S-parameters to analyze the performance of a wideband RF-SIC filter design incorporating variable delays and coefficients. Numerical MATLAB calculations demonstrate strong agreement (<; 2% error) with Advanced Design System (ADS) circuit simulations for a three-tap filter from 2 GHz-8 GHz.","PeriodicalId":6496,"journal":{"name":"2016 IEEE International Symposium on Antennas and Propagation (APSURSI)","volume":"12 1","pages":"2117-2118"},"PeriodicalIF":0.0,"publicationDate":"2016-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78479521","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}
Pub Date : 2016-06-01DOI: 10.1109/APS.2016.7696207
M. W. A. Khan, T. Bjorninen, M. Rizwan, L. Sydanheimo, L. Ukkonen
We attest the feasibility of a textile antenna in remote powering of a piezoresistive pressure sensor through inductive coupling for monitoring of intracranial pressure. The textile antenna made of metallized fabric on light-weight cell foam rubber substrate. Simulated and measured results of the wireless link performance along with measured output voltage versus pressure are presented.
{"title":"Piezoresistive pressure sensor for ICP monitoring: Remote powering through wearable textile antenna and sensor readout experiment","authors":"M. W. A. Khan, T. Bjorninen, M. Rizwan, L. Sydanheimo, L. Ukkonen","doi":"10.1109/APS.2016.7696207","DOIUrl":"https://doi.org/10.1109/APS.2016.7696207","url":null,"abstract":"We attest the feasibility of a textile antenna in remote powering of a piezoresistive pressure sensor through inductive coupling for monitoring of intracranial pressure. The textile antenna made of metallized fabric on light-weight cell foam rubber substrate. Simulated and measured results of the wireless link performance along with measured output voltage versus pressure are presented.","PeriodicalId":6496,"journal":{"name":"2016 IEEE International Symposium on Antennas and Propagation (APSURSI)","volume":"21 1","pages":"997-998"},"PeriodicalIF":0.0,"publicationDate":"2016-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77780460","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}
Pub Date : 2016-06-01DOI: 10.1109/APS.2016.7696506
S. Campbell, D. Brocker, Jogender Nagar, D. Werner
A radial-axial hybrid GRIN theory is developed in order to explore the solution space of an achromatic GRIN singlet. With the achromatic hybrid GRIN theory in hand, the tradeoffs between thickness, curvature, and GRIN type can be directly studied in the context of SWaP (size, weight, and power) reduction. Finally, the achromatic solution space of a Silicon-Germanium based material system is explored.
{"title":"SWaP tradeoffs in the solution space of a hybrid radial-axial achromatic GRIN singlet","authors":"S. Campbell, D. Brocker, Jogender Nagar, D. Werner","doi":"10.1109/APS.2016.7696506","DOIUrl":"https://doi.org/10.1109/APS.2016.7696506","url":null,"abstract":"A radial-axial hybrid GRIN theory is developed in order to explore the solution space of an achromatic GRIN singlet. With the achromatic hybrid GRIN theory in hand, the tradeoffs between thickness, curvature, and GRIN type can be directly studied in the context of SWaP (size, weight, and power) reduction. Finally, the achromatic solution space of a Silicon-Germanium based material system is explored.","PeriodicalId":6496,"journal":{"name":"2016 IEEE International Symposium on Antennas and Propagation (APSURSI)","volume":"14 1","pages":"1599-1600"},"PeriodicalIF":0.0,"publicationDate":"2016-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72794155","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}
Pub Date : 2016-06-01DOI: 10.1109/APS.2016.7695797
Vahid Amin Nili, M. Fakharzadeh, Z. Kavehvash
In this paper the techniques and measured results for clutter rejection and object separation used in a 35 GHz imaging system are presented. The proposed method is based on analyzing the image histogram information and separation of the peaks in the histogram.
{"title":"Clutter rejection and object separation in active milimeter-wave imaging system","authors":"Vahid Amin Nili, M. Fakharzadeh, Z. Kavehvash","doi":"10.1109/APS.2016.7695797","DOIUrl":"https://doi.org/10.1109/APS.2016.7695797","url":null,"abstract":"In this paper the techniques and measured results for clutter rejection and object separation used in a 35 GHz imaging system are presented. The proposed method is based on analyzing the image histogram information and separation of the peaks in the histogram.","PeriodicalId":6496,"journal":{"name":"2016 IEEE International Symposium on Antennas and Propagation (APSURSI)","volume":"7 1","pages":"177-178"},"PeriodicalIF":0.0,"publicationDate":"2016-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72797650","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}
Pub Date : 2016-06-01DOI: 10.1109/APS.2016.7696057
Roberto Maneiro-Catoira, J. Brégains, J. García-Naya, L. Castedo
Time-Modulated Arrays (TMAs) perform angular diversity through the adaptive beamforming of their harmonic patterns with the advantage of employing a single Radio Frequency (RF) front-end. Rectangular pulses typically used in TMAs are not the best ones to efficiently distribute the spectral energy among the harmonics exploited. We propose a family of pulses, the so-called Sum of Weighted Cosines (SWC), which despite its simple form, allows for a flexible windowing of the harmonics involved while opening the door to a multimode TMA.
{"title":"Time-modulated arrays with Sum of Weighted Cosine pulses","authors":"Roberto Maneiro-Catoira, J. Brégains, J. García-Naya, L. Castedo","doi":"10.1109/APS.2016.7696057","DOIUrl":"https://doi.org/10.1109/APS.2016.7696057","url":null,"abstract":"Time-Modulated Arrays (TMAs) perform angular diversity through the adaptive beamforming of their harmonic patterns with the advantage of employing a single Radio Frequency (RF) front-end. Rectangular pulses typically used in TMAs are not the best ones to efficiently distribute the spectral energy among the harmonics exploited. We propose a family of pulses, the so-called Sum of Weighted Cosines (SWC), which despite its simple form, allows for a flexible windowing of the harmonics involved while opening the door to a multimode TMA.","PeriodicalId":6496,"journal":{"name":"2016 IEEE International Symposium on Antennas and Propagation (APSURSI)","volume":"31 1","pages":"697-698"},"PeriodicalIF":0.0,"publicationDate":"2016-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80371528","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}
Pub Date : 2016-06-01DOI: 10.1109/APS.2016.7696360
Z. Jiang, Zachary Morgan, D. Werner, T. Hand, B. Martin, E. Lier
A dual-band short backfire antenna with high aperture efficiency for satellite communications is presented. The high aperture efficiency is enabled by loading anisotropic impedance metasurfaces (AIMs) to the cavity walls of a hexagonal short backfire antenna fed by a slot-loaded suspended patch. By optimizing the surface impedance values of the AIM loadings, the achieved aperture efficiency averaged over the GPS L2 and L1 bands is 90.5% for a hexagonal SBFA. The corresponding efficiency for a circular SBFA with cavity walls is 99%. Cross-polarization is also greatly improved. The homogeneous AIM can be realized by a finite periodic array of low-loss electric resonators that are comprised of metallic patterns.
{"title":"Anisotropic impedance metasurface enabled dual-band short backfire antennas with high aperture efficiency","authors":"Z. Jiang, Zachary Morgan, D. Werner, T. Hand, B. Martin, E. Lier","doi":"10.1109/APS.2016.7696360","DOIUrl":"https://doi.org/10.1109/APS.2016.7696360","url":null,"abstract":"A dual-band short backfire antenna with high aperture efficiency for satellite communications is presented. The high aperture efficiency is enabled by loading anisotropic impedance metasurfaces (AIMs) to the cavity walls of a hexagonal short backfire antenna fed by a slot-loaded suspended patch. By optimizing the surface impedance values of the AIM loadings, the achieved aperture efficiency averaged over the GPS L2 and L1 bands is 90.5% for a hexagonal SBFA. The corresponding efficiency for a circular SBFA with cavity walls is 99%. Cross-polarization is also greatly improved. The homogeneous AIM can be realized by a finite periodic array of low-loss electric resonators that are comprised of metallic patterns.","PeriodicalId":6496,"journal":{"name":"2016 IEEE International Symposium on Antennas and Propagation (APSURSI)","volume":"74 1","pages":"1305-1306"},"PeriodicalIF":0.0,"publicationDate":"2016-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76791370","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}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：