Pub Date : 2017-07-01DOI: 10.1109/APUSNCURSINRSM.2017.8073141
A. Sabban
Fractal antennas are very compact, multiband, and have useful applications in wireless communication system. Efficient small antennas are crucial in the development of compact communication systems. Low efficiency is the major disadvantage of small antennas. Several designs of Fractal Printed Antennas are presented. The antenna bandwidth is around 10% with VSWR better than 3:1. The antenna gain is around 8dBi with 90% efficiency.
{"title":"New fractal compact printed antennas","authors":"A. Sabban","doi":"10.1109/APUSNCURSINRSM.2017.8073141","DOIUrl":"https://doi.org/10.1109/APUSNCURSINRSM.2017.8073141","url":null,"abstract":"Fractal antennas are very compact, multiband, and have useful applications in wireless communication system. Efficient small antennas are crucial in the development of compact communication systems. Low efficiency is the major disadvantage of small antennas. Several designs of Fractal Printed Antennas are presented. The antenna bandwidth is around 10% with VSWR better than 3:1. The antenna gain is around 8dBi with 90% efficiency.","PeriodicalId":264754,"journal":{"name":"2017 IEEE International Symposium on Antennas and Propagation & USNC/URSI National Radio Science Meeting","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116921204","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 : 2017-07-01DOI: 10.1109/APUSNCURSINRSM.2017.8072937
Z. Crawford, Jie Li, A. Christlieb, B. Shanker
Previous work has developed a time-domain mixed finite-element method using Whitney 1-forms and Whitney 2-forms to represent the electric field and magnetic flux density, respectively in the coupled, first order Maxwell's equations. However, the leapfrog time-stepping scheme used in most of those works is conditionally stable, and the time step size is closely tied to the spatial discretization. In this work, we present an unconditionally stable time-stepping method for the time-domain mixed finite-element method based on the second order Newmark Beta time-stepping algorithm; at the conference, we will present a more elaborate/rigorous proofs on the stability of the algorithm given choices of certain parameters.
{"title":"Unconditionally stable time-domain mixed finite-element method","authors":"Z. Crawford, Jie Li, A. Christlieb, B. Shanker","doi":"10.1109/APUSNCURSINRSM.2017.8072937","DOIUrl":"https://doi.org/10.1109/APUSNCURSINRSM.2017.8072937","url":null,"abstract":"Previous work has developed a time-domain mixed finite-element method using Whitney 1-forms and Whitney 2-forms to represent the electric field and magnetic flux density, respectively in the coupled, first order Maxwell's equations. However, the leapfrog time-stepping scheme used in most of those works is conditionally stable, and the time step size is closely tied to the spatial discretization. In this work, we present an unconditionally stable time-stepping method for the time-domain mixed finite-element method based on the second order Newmark Beta time-stepping algorithm; at the conference, we will present a more elaborate/rigorous proofs on the stability of the algorithm given choices of certain parameters.","PeriodicalId":264754,"journal":{"name":"2017 IEEE International Symposium on Antennas and Propagation & USNC/URSI National Radio Science Meeting","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116962706","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 : 2017-07-01DOI: 10.1109/APUSNCURSINRSM.2017.8073287
Rupam Das, H. Yoo
In this study, we introduce a triple-band flexible implantable antenna that is tuned by using a ground slot in three specific bands, namely Medical Implanted Communication Service (MICS: 402–405 MHz) for telemetry, the midfield band (lower gigahertz: 1.45–1.6 GHz) for Wireless Power Transfer (WPT), and the Industrial, Scientific and Medical band (ISM: 2.4–2.45 GHz) for power conservation. The telemetry performance of the proposed antenna was simulated and measured by using a porcine heart. To check the feasibility of WPT, a midfield transmitter antenna was introduced. In addition, to reduce the unwanted power leakage due to WPT, a Near Field Plate (NFP) was also used. Finally, power conservation can be realized by triggering the antennas sleep mode in the ISM band.
{"title":"A triple-band deep-tissue implantable antenna incorporating biotelemetry and unidirectional wireless power transfer system","authors":"Rupam Das, H. Yoo","doi":"10.1109/APUSNCURSINRSM.2017.8073287","DOIUrl":"https://doi.org/10.1109/APUSNCURSINRSM.2017.8073287","url":null,"abstract":"In this study, we introduce a triple-band flexible implantable antenna that is tuned by using a ground slot in three specific bands, namely Medical Implanted Communication Service (MICS: 402–405 MHz) for telemetry, the midfield band (lower gigahertz: 1.45–1.6 GHz) for Wireless Power Transfer (WPT), and the Industrial, Scientific and Medical band (ISM: 2.4–2.45 GHz) for power conservation. The telemetry performance of the proposed antenna was simulated and measured by using a porcine heart. To check the feasibility of WPT, a midfield transmitter antenna was introduced. In addition, to reduce the unwanted power leakage due to WPT, a Near Field Plate (NFP) was also used. Finally, power conservation can be realized by triggering the antennas sleep mode in the ISM band.","PeriodicalId":264754,"journal":{"name":"2017 IEEE International Symposium on Antennas and Propagation & USNC/URSI National Radio Science Meeting","volume":"202 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117017640","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 : 2017-07-01DOI: 10.1109/APUSNCURSINRSM.2017.8072664
Merve Kaçar, C. Perkowski, P. Deffenbaugh, Janice C Booth, G. Mumcu, T. Weller
Design and performance of a fully-printed Ku-band aperture coupled patch antenna manufactured by making use of a direct digital manufacturing (DDM) approach that integrates fused deposition of acrylonitrile butadiene styrene (ABS) thermoplastics with in-situ micro-dispensing of conductive silver paste (CB028) is reported. Microstrip line characterizations demonstrate that the microstrip line feed loss of the antenna is minimized by printing ABS in parallel with the line directions. A wideband (20%) performance is achieved by employing a multilayer printing approach. Compared to existing work in literature, the presented antenna stands out as being fully-printed, operating within the Ku-band, and exhibiting high radiation efficiency (6.5 dB gain) with wide bandwidth performance.
{"title":"Wideband Ku-band antennas using multi-layer direct digital manufacturing","authors":"Merve Kaçar, C. Perkowski, P. Deffenbaugh, Janice C Booth, G. Mumcu, T. Weller","doi":"10.1109/APUSNCURSINRSM.2017.8072664","DOIUrl":"https://doi.org/10.1109/APUSNCURSINRSM.2017.8072664","url":null,"abstract":"Design and performance of a fully-printed Ku-band aperture coupled patch antenna manufactured by making use of a direct digital manufacturing (DDM) approach that integrates fused deposition of acrylonitrile butadiene styrene (ABS) thermoplastics with in-situ micro-dispensing of conductive silver paste (CB028) is reported. Microstrip line characterizations demonstrate that the microstrip line feed loss of the antenna is minimized by printing ABS in parallel with the line directions. A wideband (20%) performance is achieved by employing a multilayer printing approach. Compared to existing work in literature, the presented antenna stands out as being fully-printed, operating within the Ku-band, and exhibiting high radiation efficiency (6.5 dB gain) with wide bandwidth performance.","PeriodicalId":264754,"journal":{"name":"2017 IEEE International Symposium on Antennas and Propagation & USNC/URSI National Radio Science Meeting","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117146616","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 : 2017-07-01DOI: 10.1109/APUSNCURSINRSM.2017.8072676
Weiren Zhu, Chong He, Xianling Liang, Jun-ping Geng, R. Jin
An ultra-thin water metamaterial in the shape of a fishnet structure is designed and analyzed. It is theoretically shown that coherent perfect absorption can be achieved in such a metamaterial, where the reflection and transmission coefficients have same amplitudes and nearly 180° phase delay. Moreover, the coherent absorptivity of the water metamaterial can be manipulated from 0.59% to 99.99% by phase modulation.
{"title":"Coherent control of absorption in water based metamaterial","authors":"Weiren Zhu, Chong He, Xianling Liang, Jun-ping Geng, R. Jin","doi":"10.1109/APUSNCURSINRSM.2017.8072676","DOIUrl":"https://doi.org/10.1109/APUSNCURSINRSM.2017.8072676","url":null,"abstract":"An ultra-thin water metamaterial in the shape of a fishnet structure is designed and analyzed. It is theoretically shown that coherent perfect absorption can be achieved in such a metamaterial, where the reflection and transmission coefficients have same amplitudes and nearly 180° phase delay. Moreover, the coherent absorptivity of the water metamaterial can be manipulated from 0.59% to 99.99% by phase modulation.","PeriodicalId":264754,"journal":{"name":"2017 IEEE International Symposium on Antennas and Propagation & USNC/URSI National Radio Science Meeting","volume":"111 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117256698","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 : 2017-07-01DOI: 10.1109/APUSNCURSINRSM.2017.8073172
A. Boutejdar, A. Ibrahim, R. Shubair
This paper introduces the design of low pass filter for radar applications. The main block of the proposed filter is the combination of defected microstrip structure (DMS), compensated microstrip capacitors, and two defected ground structures (DGS). The proposed filter has several desirable features such as low insertion loss of 0.3 dB within the pass band, a wide rejection band from 1.5 GHz to 8.3 GHz with more than 20 dB attenuation, as well as sharp cutoff. Moreover, the proposed design has a compact size of 5.8cm×3.5cm. Experimental measurements of the fabricated filter agree with simulation results, which confirm that the proposed DMS/DGS filter design is suitable for radar and microwave applications.
{"title":"A novel high-performance dms/dgs low-pass filter for radar applications","authors":"A. Boutejdar, A. Ibrahim, R. Shubair","doi":"10.1109/APUSNCURSINRSM.2017.8073172","DOIUrl":"https://doi.org/10.1109/APUSNCURSINRSM.2017.8073172","url":null,"abstract":"This paper introduces the design of low pass filter for radar applications. The main block of the proposed filter is the combination of defected microstrip structure (DMS), compensated microstrip capacitors, and two defected ground structures (DGS). The proposed filter has several desirable features such as low insertion loss of 0.3 dB within the pass band, a wide rejection band from 1.5 GHz to 8.3 GHz with more than 20 dB attenuation, as well as sharp cutoff. Moreover, the proposed design has a compact size of 5.8cm×3.5cm. Experimental measurements of the fabricated filter agree with simulation results, which confirm that the proposed DMS/DGS filter design is suitable for radar and microwave applications.","PeriodicalId":264754,"journal":{"name":"2017 IEEE International Symposium on Antennas and Propagation & USNC/URSI National Radio Science Meeting","volume":"52 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121132019","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 : 2017-07-01DOI: 10.1109/APUSNCURSINRSM.2017.8072880
Menglin L. N. Chen, L. J. Jiang, W. Sha
Orbital angular momentum (OAM) is generated from a defect in two-dimensional (2-D) photonic crystals (PC). By breaking the translation symmetry along the two orthogonal directions, the localized defect states can be supported within photonic bandgap of the PC. Particularly, we examine the characteristics of the point defect states along the azimuthal direction by the finite-difference (FD) based eigenvalue analysis. We find that vortex beam carrying OAM can be generated from the defect. The novel design can be easily integrated in optical circuits.
{"title":"Orbital angular momentum generation from a defect in photonic crystals","authors":"Menglin L. N. Chen, L. J. Jiang, W. Sha","doi":"10.1109/APUSNCURSINRSM.2017.8072880","DOIUrl":"https://doi.org/10.1109/APUSNCURSINRSM.2017.8072880","url":null,"abstract":"Orbital angular momentum (OAM) is generated from a defect in two-dimensional (2-D) photonic crystals (PC). By breaking the translation symmetry along the two orthogonal directions, the localized defect states can be supported within photonic bandgap of the PC. Particularly, we examine the characteristics of the point defect states along the azimuthal direction by the finite-difference (FD) based eigenvalue analysis. We find that vortex beam carrying OAM can be generated from the defect. The novel design can be easily integrated in optical circuits.","PeriodicalId":264754,"journal":{"name":"2017 IEEE International Symposium on Antennas and Propagation & USNC/URSI National Radio Science Meeting","volume":"232 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121139160","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 : 2017-07-01DOI: 10.1109/APUSNCURSINRSM.2017.8072419
Komlan Payne, Jun-Ho Choi, T. Jang
This paper presents a novel tri-orthogonal polarization antenna operating at 2.4 GHz with good prospective for WLAN and MIMO systems. The design is implemented by integrating dual polarized cross-slot antenna and zeroth-order resonant (ZOR) antenna. The total height of the antenna is 0.762 mm corresponding to 0.01λg (where λg is the guide wavelength at 2.4 GHz). Linear horizontal dual-polarization and vertical polarization radiation patterns are obtained by using cross-polarized slot antennas and ZOR array antenna respectively. The broadside gain provided by the slot radiation is 5.3 dBi while the azimuthal average gain of the ZOR antenna is about 1.2 dBi.
{"title":"Ultra-low profile tri-polarized antenna for WLAN/MIMO application","authors":"Komlan Payne, Jun-Ho Choi, T. Jang","doi":"10.1109/APUSNCURSINRSM.2017.8072419","DOIUrl":"https://doi.org/10.1109/APUSNCURSINRSM.2017.8072419","url":null,"abstract":"This paper presents a novel tri-orthogonal polarization antenna operating at 2.4 GHz with good prospective for WLAN and MIMO systems. The design is implemented by integrating dual polarized cross-slot antenna and zeroth-order resonant (ZOR) antenna. The total height of the antenna is 0.762 mm corresponding to 0.01λg (where λg is the guide wavelength at 2.4 GHz). Linear horizontal dual-polarization and vertical polarization radiation patterns are obtained by using cross-polarized slot antennas and ZOR array antenna respectively. The broadside gain provided by the slot radiation is 5.3 dBi while the azimuthal average gain of the ZOR antenna is about 1.2 dBi.","PeriodicalId":264754,"journal":{"name":"2017 IEEE International Symposium on Antennas and Propagation & USNC/URSI National Radio Science Meeting","volume":"57 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127372568","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 : 2017-07-01DOI: 10.1109/APUSNCURSINRSM.2017.8073176
J. Ai, Yonghong Zhang, K. Xu, Mengkui Shen, Tianye Ma, W. Joines
The operating mechanism of the quad-band band stop filter (QB-BSF) with multiple-mode resonator (MMR) is introduced in this paper. Based on the design procedure, the operating stopband frequency locations of the proposed QB-BSF can be conveniently controlled. Also, the BSF features compact size and sharp roll-off skirts for transition bands. As an example, a QB-BSF centered at 1.23/1.8/2.4/3.5GHz with respective rejection levels of 22.5/47/52.1/23.7 dB has been designed.
{"title":"Miniaturized quad-band bandstop filter with controllable frequencies using multiple-mode resonator","authors":"J. Ai, Yonghong Zhang, K. Xu, Mengkui Shen, Tianye Ma, W. Joines","doi":"10.1109/APUSNCURSINRSM.2017.8073176","DOIUrl":"https://doi.org/10.1109/APUSNCURSINRSM.2017.8073176","url":null,"abstract":"The operating mechanism of the quad-band band stop filter (QB-BSF) with multiple-mode resonator (MMR) is introduced in this paper. Based on the design procedure, the operating stopband frequency locations of the proposed QB-BSF can be conveniently controlled. Also, the BSF features compact size and sharp roll-off skirts for transition bands. As an example, a QB-BSF centered at 1.23/1.8/2.4/3.5GHz with respective rejection levels of 22.5/47/52.1/23.7 dB has been designed.","PeriodicalId":264754,"journal":{"name":"2017 IEEE International Symposium on Antennas and Propagation & USNC/URSI National Radio Science Meeting","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124834896","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 : 2017-07-01DOI: 10.1109/APUSNCURSINRSM.2017.8072587
Y. Song, Junjun Wang, Xiling Luo
This paper presents the design of a high gain quasi-Yagi antenna and array for rectenna. First, for the quasi-Yagi antenna, the improvement of bowtie driven element with round corner is proposed to reduce the antenna's size, to decrease the reflection coefficient as well as to achieve the high gain of 8dBi. Moreover, 1×4 quasi-Yagi antenna array is designed which is fed by a 4-way equal Wilkinson power divider and the array can finally reach a high gain of 12dBi. This antenna and array are appropriate for being the receiving antenna of a rectenna to transmit energy or harvest surrounding power.
{"title":"Design of a high gain quasi-yagi antenna and array for rectenna","authors":"Y. Song, Junjun Wang, Xiling Luo","doi":"10.1109/APUSNCURSINRSM.2017.8072587","DOIUrl":"https://doi.org/10.1109/APUSNCURSINRSM.2017.8072587","url":null,"abstract":"This paper presents the design of a high gain quasi-Yagi antenna and array for rectenna. First, for the quasi-Yagi antenna, the improvement of bowtie driven element with round corner is proposed to reduce the antenna's size, to decrease the reflection coefficient as well as to achieve the high gain of 8dBi. Moreover, 1×4 quasi-Yagi antenna array is designed which is fed by a 4-way equal Wilkinson power divider and the array can finally reach a high gain of 12dBi. This antenna and array are appropriate for being the receiving antenna of a rectenna to transmit energy or harvest surrounding power.","PeriodicalId":264754,"journal":{"name":"2017 IEEE International Symposium on Antennas and Propagation & USNC/URSI National Radio Science Meeting","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124868882","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}
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