Pub Date : 2014-07-06DOI: 10.1109/APS.2014.6905291
T. Bernabeu-Jiménez, A. Valero-Nogueira, F. Vico-Bondia, E. Antonino-Daviu, M. Cabedo-Fabrés
In this study, the theory of characteristic modes is used as the first time for the analysis and design of a wideband rectangular dielectric resonator antenna. The rectangular dieletric resonator antenna was excited by a microstrip feeder with a rectangular coupled slot. The antenna is designed for low-temperature co-fired ceramic fabrication, with Ferro A6-M material and for ISM-band at 60GHz. The proposed antenna has an impedance bandwidth of 33% for S11<;-10dB.
{"title":"A 60-GHz LTCC rectangular dielectric resonator antenna design with characteristic modes theory","authors":"T. Bernabeu-Jiménez, A. Valero-Nogueira, F. Vico-Bondia, E. Antonino-Daviu, M. Cabedo-Fabrés","doi":"10.1109/APS.2014.6905291","DOIUrl":"https://doi.org/10.1109/APS.2014.6905291","url":null,"abstract":"In this study, the theory of characteristic modes is used as the first time for the analysis and design of a wideband rectangular dielectric resonator antenna. The rectangular dieletric resonator antenna was excited by a microstrip feeder with a rectangular coupled slot. The antenna is designed for low-temperature co-fired ceramic fabrication, with Ferro A6-M material and for ISM-band at 60GHz. The proposed antenna has an impedance bandwidth of 33% for S11<;-10dB.","PeriodicalId":6663,"journal":{"name":"2014 IEEE Antennas and Propagation Society International Symposium (APSURSI)","volume":"220 1","pages":"1928-1929"},"PeriodicalIF":0.0,"publicationDate":"2014-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79823001","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 : 2014-07-06DOI: 10.1109/APS.2014.6904536
F. Bouchibane, K. Ghanem, M. Bensebti
An efficient pilot pattern design can improve both the spectral efficiency and the reliability of an orthogonal frequency division multiplexing (OFDM) system. Usually, the pilot structure in LTE system is predetermined regardless of the channel variation. In this paper the problem of pilot pattern design is tackled. The pilot symbols spacing that gives the best performance in terms of BER is established as the optimum pilot pattern. The performance of the proposed design is confirmed through simulation and compared to the LTE standard pilot spacing where it is shown that pilot spacing adjustment is not efficient in slow fading channel.
{"title":"Performance analysis of pilot pattern design for channel estimation in LTE downlink","authors":"F. Bouchibane, K. Ghanem, M. Bensebti","doi":"10.1109/APS.2014.6904536","DOIUrl":"https://doi.org/10.1109/APS.2014.6904536","url":null,"abstract":"An efficient pilot pattern design can improve both the spectral efficiency and the reliability of an orthogonal frequency division multiplexing (OFDM) system. Usually, the pilot structure in LTE system is predetermined regardless of the channel variation. In this paper the problem of pilot pattern design is tackled. The pilot symbols spacing that gives the best performance in terms of BER is established as the optimum pilot pattern. The performance of the proposed design is confirmed through simulation and compared to the LTE standard pilot spacing where it is shown that pilot spacing adjustment is not efficient in slow fading channel.","PeriodicalId":6663,"journal":{"name":"2014 IEEE Antennas and Propagation Society International Symposium (APSURSI)","volume":"21 1","pages":"408-409"},"PeriodicalIF":0.0,"publicationDate":"2014-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80117328","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 : 2014-07-06DOI: 10.1109/APS.2014.6905361
Y. Liu, Y. Jia, S. Gong
In this paper, a low radar cross section (RCS) microstrip antenna is proposed. A polarization-dependent frequency selective surface (FSS) structure is designed and used as the antenna ground. By properly etching the elements of the polarization-dependent FSS on the ground of the microstrip antenna, the RCS has been reduced in the angular range of -90° ≤ θ ≤ 90° in both xoz-plane and yoz-plane under the φ - polarized incident wave. The degradation of the antenna performance is not significant.
{"title":"Low RCS microstrip antenna using polarization-dependent frequency selective surface","authors":"Y. Liu, Y. Jia, S. Gong","doi":"10.1109/APS.2014.6905361","DOIUrl":"https://doi.org/10.1109/APS.2014.6905361","url":null,"abstract":"In this paper, a low radar cross section (RCS) microstrip antenna is proposed. A polarization-dependent frequency selective surface (FSS) structure is designed and used as the antenna ground. By properly etching the elements of the polarization-dependent FSS on the ground of the microstrip antenna, the RCS has been reduced in the angular range of -90° ≤ θ ≤ 90° in both xoz-plane and yoz-plane under the φ - polarized incident wave. The degradation of the antenna performance is not significant.","PeriodicalId":6663,"journal":{"name":"2014 IEEE Antennas and Propagation Society International Symposium (APSURSI)","volume":"35 1","pages":"2068-2069"},"PeriodicalIF":0.0,"publicationDate":"2014-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80321945","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 : 2014-07-06DOI: 10.1109/APS.2014.6904759
S. M. Raeis-Zadeh, M. Haghtalab, S. Safavi-Naeini
A graphene-based antenna for the THz photomixing application is proposed. The graphene layer was used to control the antenna's resonance frequency. A frequency change as high as 270 GHz at the center frequency of 1.4 THz was obtained for the proposed antenna structure.
{"title":"Graphene-based controllable antenna for Terahertz photomixer sources","authors":"S. M. Raeis-Zadeh, M. Haghtalab, S. Safavi-Naeini","doi":"10.1109/APS.2014.6904759","DOIUrl":"https://doi.org/10.1109/APS.2014.6904759","url":null,"abstract":"A graphene-based antenna for the THz photomixing application is proposed. The graphene layer was used to control the antenna's resonance frequency. A frequency change as high as 270 GHz at the center frequency of 1.4 THz was obtained for the proposed antenna structure.","PeriodicalId":6663,"journal":{"name":"2014 IEEE Antennas and Propagation Society International Symposium (APSURSI)","volume":"8 1","pages":"862-863"},"PeriodicalIF":0.0,"publicationDate":"2014-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80338295","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 : 2014-07-06DOI: 10.1109/APS.2014.6904428
E. Jørgensen, P. Meincke, N. Llombart, A. Neto
A generalised admittance matrix technique that enables an accurate full-wave analysis of typical integrated lens antennas in less than 2 minutes is presented. The fast analysis is obtained by rigorously combining two efficient higher-order MoM solvers; a general 3D-MoM solver and a fast BoR-MoM solver for structures with rotational symmetry. The method is very suitable for numerical optimisation of dielectric lenses with a 3D feeding arrangement because the full-wave solution can be reassembled in each optimisation step after only a partial re-computation. The results obtained with the domain-decomposition method are compared with simulations and measurements of a leaky lens antenna.
{"title":"Full-wave domain decomposition method for optimisation of integrated lens antennas","authors":"E. Jørgensen, P. Meincke, N. Llombart, A. Neto","doi":"10.1109/APS.2014.6904428","DOIUrl":"https://doi.org/10.1109/APS.2014.6904428","url":null,"abstract":"A generalised admittance matrix technique that enables an accurate full-wave analysis of typical integrated lens antennas in less than 2 minutes is presented. The fast analysis is obtained by rigorously combining two efficient higher-order MoM solvers; a general 3D-MoM solver and a fast BoR-MoM solver for structures with rotational symmetry. The method is very suitable for numerical optimisation of dielectric lenses with a 3D feeding arrangement because the full-wave solution can be reassembled in each optimisation step after only a partial re-computation. The results obtained with the domain-decomposition method are compared with simulations and measurements of a leaky lens antenna.","PeriodicalId":6663,"journal":{"name":"2014 IEEE Antennas and Propagation Society International Symposium (APSURSI)","volume":"80 1","pages":"193-194"},"PeriodicalIF":0.0,"publicationDate":"2014-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80367492","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 : 2014-07-06DOI: 10.1109/APS.2014.6904678
B. Kelley, K. Naishadham
Contemporary underwater communications relies heavily upon narrowband, low-rate acoustics. We present an alternative framework for high data rate undersea broadband using radio-frequency communications. Our approach adapts loop antennas matched to sea water in the 3 MHz to 30 MHz HF band for the shallow underwater ocean zone. We present analysis from empirical channel model characterization that indicates information rate bounds for EM radio frequency communications in undersea environments that are 1000× that of acoustics. This will enable significantly new classes of applications, including ocean based underwater networks.
{"title":"High data rate undersea broadband radio-frequency communications","authors":"B. Kelley, K. Naishadham","doi":"10.1109/APS.2014.6904678","DOIUrl":"https://doi.org/10.1109/APS.2014.6904678","url":null,"abstract":"Contemporary underwater communications relies heavily upon narrowband, low-rate acoustics. We present an alternative framework for high data rate undersea broadband using radio-frequency communications. Our approach adapts loop antennas matched to sea water in the 3 MHz to 30 MHz HF band for the shallow underwater ocean zone. We present analysis from empirical channel model characterization that indicates information rate bounds for EM radio frequency communications in undersea environments that are 1000× that of acoustics. This will enable significantly new classes of applications, including ocean based underwater networks.","PeriodicalId":6663,"journal":{"name":"2014 IEEE Antennas and Propagation Society International Symposium (APSURSI)","volume":"23 1","pages":"695-696"},"PeriodicalIF":0.0,"publicationDate":"2014-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76697649","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 : 2014-07-06DOI: 10.1109/APS.2014.6905028
R. K. Tallos, Zheyu Wang, J. Volakis
This paper presents the design of a body-worn ambient RF energy harvesting system. The proposed system harvests freely available RF energy in an office environment using the 2.45-GHz WLAN band and converts it to usable DC power. To capture sufficient ambient RF energy, multiple body-worn embroidered textile antennas are conformally woven into a daily garment. A RF-to-DC rectifier circuit is also designed and optimized for operation at the WLAN band. Experimental tests are carried out to evaluate the average DC power that can be harvested in an office environment where significant wireless data traffic exists. These measurements will demonstrate the capability of the proposed body-worn energy harvester in supplying low-power electronics.
{"title":"Wi-Fi energy harvesting system using body-worn antennas","authors":"R. K. Tallos, Zheyu Wang, J. Volakis","doi":"10.1109/APS.2014.6905028","DOIUrl":"https://doi.org/10.1109/APS.2014.6905028","url":null,"abstract":"This paper presents the design of a body-worn ambient RF energy harvesting system. The proposed system harvests freely available RF energy in an office environment using the 2.45-GHz WLAN band and converts it to usable DC power. To capture sufficient ambient RF energy, multiple body-worn embroidered textile antennas are conformally woven into a daily garment. A RF-to-DC rectifier circuit is also designed and optimized for operation at the WLAN band. Experimental tests are carried out to evaluate the average DC power that can be harvested in an office environment where significant wireless data traffic exists. These measurements will demonstrate the capability of the proposed body-worn energy harvester in supplying low-power electronics.","PeriodicalId":6663,"journal":{"name":"2014 IEEE Antennas and Propagation Society International Symposium (APSURSI)","volume":"16 1","pages":"1405-1406"},"PeriodicalIF":0.0,"publicationDate":"2014-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82526597","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 : 2014-07-06DOI: 10.1109/APS.2014.6904892
D. Arumugam
Magnetoquasistatic position and orientation errors due to measurement noise are quantitatively studied using theoretical field equations and added Gaussian noise.
利用理论场方程和附加高斯噪声，定量研究了测量噪声引起的准静磁方位和位置误差。
{"title":"Effect of measurement noise on magnetoquasistatic position and orientation sensing","authors":"D. Arumugam","doi":"10.1109/APS.2014.6904892","DOIUrl":"https://doi.org/10.1109/APS.2014.6904892","url":null,"abstract":"Magnetoquasistatic position and orientation errors due to measurement noise are quantitatively studied using theoretical field equations and added Gaussian noise.","PeriodicalId":6663,"journal":{"name":"2014 IEEE Antennas and Propagation Society International Symposium (APSURSI)","volume":"34 1","pages":"1131-1132"},"PeriodicalIF":0.0,"publicationDate":"2014-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82592670","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 : 2014-07-06DOI: 10.1109/APS.2014.6904610
Billy Wu, M. Okoniewski, C. Hayden
In designing reconfigurable antennas, pneumatic control of solid dielectric slugs offers an alternative to established technologies of reconfigurability, such as PIN diodes and MEMS switches, that require biasing feedlines embedded in the radiating structures. A pneumatically controlled ring slot antenna capable of switching between LP, LHCP, and RHCP is described, in which the dielectric slugs and their enclosing channel are fabricated on a different layer. The positions of the slugs, controlled by the pressure gradient within the channel, determine the polarization state. An axial ratio bandwidth of 5% was measured, which is slightly greater than those of similar antennas with polarization diversity using PIN diodes. The measured performance was found to be similar to existing reconfigurable antennas, demonstrating that a device using pneumatic actuation is a viable alternative.
{"title":"Reconfigurable ring slot antenna with polarization diversity using pneumatic control","authors":"Billy Wu, M. Okoniewski, C. Hayden","doi":"10.1109/APS.2014.6904610","DOIUrl":"https://doi.org/10.1109/APS.2014.6904610","url":null,"abstract":"In designing reconfigurable antennas, pneumatic control of solid dielectric slugs offers an alternative to established technologies of reconfigurability, such as PIN diodes and MEMS switches, that require biasing feedlines embedded in the radiating structures. A pneumatically controlled ring slot antenna capable of switching between LP, LHCP, and RHCP is described, in which the dielectric slugs and their enclosing channel are fabricated on a different layer. The positions of the slugs, controlled by the pressure gradient within the channel, determine the polarization state. An axial ratio bandwidth of 5% was measured, which is slightly greater than those of similar antennas with polarization diversity using PIN diodes. The measured performance was found to be similar to existing reconfigurable antennas, demonstrating that a device using pneumatic actuation is a viable alternative.","PeriodicalId":6663,"journal":{"name":"2014 IEEE Antennas and Propagation Society International Symposium (APSURSI)","volume":"187 2 1","pages":"559-560"},"PeriodicalIF":0.0,"publicationDate":"2014-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81454753","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 : 2014-07-06DOI: 10.1109/APS.2014.6904406
J. McCombe, N. Nikolova
A method to assess the signal-to-noise ratio (SNR) of microwave imaging acquisition systems is proposed. The method can be used to automatically discriminate between high- and low-quality responses acquired with a given setup or to compare acquisition hardware. The approach uses the measurements of a known calibration object, which are often available from the calibration of the microwave acquisition system.
{"title":"SNR assessment of microwave imaging systems","authors":"J. McCombe, N. Nikolova","doi":"10.1109/APS.2014.6904406","DOIUrl":"https://doi.org/10.1109/APS.2014.6904406","url":null,"abstract":"A method to assess the signal-to-noise ratio (SNR) of microwave imaging acquisition systems is proposed. The method can be used to automatically discriminate between high- and low-quality responses acquired with a given setup or to compare acquisition hardware. The approach uses the measurements of a known calibration object, which are often available from the calibration of the microwave acquisition system.","PeriodicalId":6663,"journal":{"name":"2014 IEEE Antennas and Propagation Society International Symposium (APSURSI)","volume":"2 1","pages":"149-150"},"PeriodicalIF":0.0,"publicationDate":"2014-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82248066","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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