Pub Date : 2017-07-09DOI: 10.1109/APUSNCURSINRSM.2017.8072605
Z. Yao, Y. Wang
The thin-film multiferroic bulk-acoustic-wave (BAW) antennas consisting of piezoelectric and magneto-elastic materials are modeled. The effect of ferromagnetic resonance (FMR) on the radiation efficiency is demonstrated. As the applied in-plane magnetic DC field aligns the FMR frequency of the magneto-elastic layer with that of the BAW resonance of the structure, peaks in radiation efficiency are observed. Benchmark against the conventional dipole antenna and Chu's limit validates the advantage of the multiferroic antennas. This work represents the first three-dimensional investigation in magneto-elastic coupling based thin-film multiferroic antennas for potential applications in electrically small antennas.
{"title":"3D modeling of BAW-based multiferroic antennas","authors":"Z. Yao, Y. Wang","doi":"10.1109/APUSNCURSINRSM.2017.8072605","DOIUrl":"https://doi.org/10.1109/APUSNCURSINRSM.2017.8072605","url":null,"abstract":"The thin-film multiferroic bulk-acoustic-wave (BAW) antennas consisting of piezoelectric and magneto-elastic materials are modeled. The effect of ferromagnetic resonance (FMR) on the radiation efficiency is demonstrated. As the applied in-plane magnetic DC field aligns the FMR frequency of the magneto-elastic layer with that of the BAW resonance of the structure, peaks in radiation efficiency are observed. Benchmark against the conventional dipole antenna and Chu's limit validates the advantage of the multiferroic antennas. This work represents the first three-dimensional investigation in magneto-elastic coupling based thin-film multiferroic antennas for potential applications in electrically small antennas.","PeriodicalId":264754,"journal":{"name":"2017 IEEE International Symposium on Antennas and Propagation & USNC/URSI National Radio Science Meeting","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133667578","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 : 2017-07-09DOI: 10.1109/APUSNCURSINRSM.2017.8073365
Cheng Guo, Jin Li, Jun Xu, Hongjun Li
This paper presents an X-band eighth-order quasi-elliptic circular waveguide dual-mode bandpass filter (BPF) that is manufactured using a fast and low-cost stereolithography-based 3-D printing technique. The 3-D printed filter has advantages of a more convenient integration free of either assembly or post fabrication tuning and furthermore a lightweight of 111 g. A ceramic-filled resin with an enhanced thermal handling capability is used as the filter's building material, which makes the filter capable of operating under much higher temperatures than the one made from ordinary photosensitive resins. Surface metallization of the filter is realized by a layer of electroless plated copper. In the measured passband 8.01–8.44 GHz, the filter exhibits a return loss over 10 dB and a corresponding insertion loss of 0.32–0.68 dB.
{"title":"An X-band lightweight 3-D printed slotted circular waveguide dual-mode bandpass filter","authors":"Cheng Guo, Jin Li, Jun Xu, Hongjun Li","doi":"10.1109/APUSNCURSINRSM.2017.8073365","DOIUrl":"https://doi.org/10.1109/APUSNCURSINRSM.2017.8073365","url":null,"abstract":"This paper presents an X-band eighth-order quasi-elliptic circular waveguide dual-mode bandpass filter (BPF) that is manufactured using a fast and low-cost stereolithography-based 3-D printing technique. The 3-D printed filter has advantages of a more convenient integration free of either assembly or post fabrication tuning and furthermore a lightweight of 111 g. A ceramic-filled resin with an enhanced thermal handling capability is used as the filter's building material, which makes the filter capable of operating under much higher temperatures than the one made from ordinary photosensitive resins. Surface metallization of the filter is realized by a layer of electroless plated copper. In the measured passband 8.01–8.44 GHz, the filter exhibits a return loss over 10 dB and a corresponding insertion loss of 0.32–0.68 dB.","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":"2017-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121836572","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 : 2017-07-09DOI: 10.1109/APUSNCURSINRSM.2017.8073030
J. Duplouy, C. Morlaas, H. Aubert, P. Potier, P. Pouliguen, C. Djoma
In this communication, a wideband vector sensor for embedded applications is proposed. This original sensor is composed of two orthogonal and colocated semi-circular arrays of Vivaldi antennas mounted over a ground plane. Stable radiation patterns of two wideband magnetic dipoles and one wideband electric dipole are obtained from full-wave electromagnetic simulations over a 1.69:1 impedance bandwidth with an original control of the excitation.
{"title":"Grounded colocated antennas for wideband vector sensor applications","authors":"J. Duplouy, C. Morlaas, H. Aubert, P. Potier, P. Pouliguen, C. Djoma","doi":"10.1109/APUSNCURSINRSM.2017.8073030","DOIUrl":"https://doi.org/10.1109/APUSNCURSINRSM.2017.8073030","url":null,"abstract":"In this communication, a wideband vector sensor for embedded applications is proposed. This original sensor is composed of two orthogonal and colocated semi-circular arrays of Vivaldi antennas mounted over a ground plane. Stable radiation patterns of two wideband magnetic dipoles and one wideband electric dipole are obtained from full-wave electromagnetic simulations over a 1.69:1 impedance bandwidth with an original control of the excitation.","PeriodicalId":264754,"journal":{"name":"2017 IEEE International Symposium on Antennas and Propagation & USNC/URSI National Radio Science Meeting","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115170131","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 : 2017-07-09DOI: 10.1109/APUSNCURSINRSM.2017.8072977
Lijia Zhu, H. Hwang, Eugene Ren, Guangli Yang
In this paper, a dual-band 2×2 MIMO antenna for wearable device applications is presented to support the 5G radio frequency allocations at 3.3–3.6 and 4.5–5 GHz in China. The single antenna unit is composed of a monopole mode and a folded loop mode with a single feed to cover these two bands. Two identical antennas positioned at top and bottom sides of a smart watch sized PCB (40×40mm2) are used to demonstrate the MIMO performance. The simulation results from xFDTD show that these MIMO antennas can achieve over 85 % efficiency, more than 17 dB isolation and 0.02 correlation coefficient at both bands.
{"title":"High performance MIMO antenna for 5G wearable devices","authors":"Lijia Zhu, H. Hwang, Eugene Ren, Guangli Yang","doi":"10.1109/APUSNCURSINRSM.2017.8072977","DOIUrl":"https://doi.org/10.1109/APUSNCURSINRSM.2017.8072977","url":null,"abstract":"In this paper, a dual-band 2×2 MIMO antenna for wearable device applications is presented to support the 5G radio frequency allocations at 3.3–3.6 and 4.5–5 GHz in China. The single antenna unit is composed of a monopole mode and a folded loop mode with a single feed to cover these two bands. Two identical antennas positioned at top and bottom sides of a smart watch sized PCB (40×40mm2) are used to demonstrate the MIMO performance. The simulation results from xFDTD show that these MIMO antennas can achieve over 85 % efficiency, more than 17 dB isolation and 0.02 correlation coefficient at both bands.","PeriodicalId":264754,"journal":{"name":"2017 IEEE International Symposium on Antennas and Propagation & USNC/URSI National Radio Science Meeting","volume":"240 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115242417","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 : 2017-07-09DOI: 10.1109/APUSNCURSINRSM.2017.8072751
Longhe Wang, B. Ai, Danping He, G. Li, K. Guan, R. He, Z. Zhong
Industry 4.0 aims to connect internet to industry, makes the factories more conomic, efficient and smart. In this paper we focus the study on the wireless channel characteristics in smart warehouse at 5.8 GHz, which is a typical scenario of industrial 4.0 at ISM band. we build a smart warehouse scenario in 3D mode, simulate the channel by using ray-tracing method. The main energy in the channel comes from the direct path, and most multi-paths are continuously varying in the mobile channel.
{"title":"Channel characteristics analysis in smart warehouse scenario","authors":"Longhe Wang, B. Ai, Danping He, G. Li, K. Guan, R. He, Z. Zhong","doi":"10.1109/APUSNCURSINRSM.2017.8072751","DOIUrl":"https://doi.org/10.1109/APUSNCURSINRSM.2017.8072751","url":null,"abstract":"Industry 4.0 aims to connect internet to industry, makes the factories more conomic, efficient and smart. In this paper we focus the study on the wireless channel characteristics in smart warehouse at 5.8 GHz, which is a typical scenario of industrial 4.0 at ISM band. we build a smart warehouse scenario in 3D mode, simulate the channel by using ray-tracing method. The main energy in the channel comes from the direct path, and most multi-paths are continuously varying in the mobile channel.","PeriodicalId":264754,"journal":{"name":"2017 IEEE International Symposium on Antennas and Propagation & USNC/URSI National Radio Science Meeting","volume":"34 1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132053448","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 : 2017-07-09DOI: 10.1109/APUSNCURSINRSM.2017.8072138
Chi-Yuk Chiu, Shanpu Shen, R. Murch
In this paper an optically transparent dual-band antenna is proposed. The antenna can be directly constructed on the surface of display screens for applications in smart watches, tablets and smart TVs. This design approach would relieve the antenna designer of having to integrate antennas into the body of electronic devices and allow them to integrate antennas into the display and provide significant advantages in small form factor and low profile wireless communication apparatus. It is shown that the proposed antenna can exhibit dual-band operation.
{"title":"Transparent dual-band antenna for smart watch applications","authors":"Chi-Yuk Chiu, Shanpu Shen, R. Murch","doi":"10.1109/APUSNCURSINRSM.2017.8072138","DOIUrl":"https://doi.org/10.1109/APUSNCURSINRSM.2017.8072138","url":null,"abstract":"In this paper an optically transparent dual-band antenna is proposed. The antenna can be directly constructed on the surface of display screens for applications in smart watches, tablets and smart TVs. This design approach would relieve the antenna designer of having to integrate antennas into the body of electronic devices and allow them to integrate antennas into the display and provide significant advantages in small form factor and low profile wireless communication apparatus. It is shown that the proposed antenna can exhibit dual-band operation.","PeriodicalId":264754,"journal":{"name":"2017 IEEE International Symposium on Antennas and Propagation & USNC/URSI National Radio Science Meeting","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133101791","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 : 2017-07-09DOI: 10.1109/APUSNCURSINRSM.2017.8072056
Ke Zhang, Maokun Li, Fan Yang, Shenheng Xu, A. Abubakar
A multiplicative regularization scheme with edge-preserving characteristics is applied to the inversion of electrical impedance tomography (EIT) data. This scheme employs a multiplicative cost function of a weighted L2-norm regularization function and the data misfit function. It avoids the use of a weighting factor when the regularization term is added to the cost function and allows an adaptive weighting between data misfit and the regularization function. Gauss-Newton method is used to minimize the multiplicative cost function. In this work, we extend the weighted L2-norm regularization scheme onto a triangular grid with an updated formula for gradient and divergence operators. This scheme is tested using synthetic data. The reconstructed images show good piecewise constant characteristics and noise-resistance performance.
{"title":"Application of multiplicative regularization for electrical impedance tomography","authors":"Ke Zhang, Maokun Li, Fan Yang, Shenheng Xu, A. Abubakar","doi":"10.1109/APUSNCURSINRSM.2017.8072056","DOIUrl":"https://doi.org/10.1109/APUSNCURSINRSM.2017.8072056","url":null,"abstract":"A multiplicative regularization scheme with edge-preserving characteristics is applied to the inversion of electrical impedance tomography (EIT) data. This scheme employs a multiplicative cost function of a weighted L2-norm regularization function and the data misfit function. It avoids the use of a weighting factor when the regularization term is added to the cost function and allows an adaptive weighting between data misfit and the regularization function. Gauss-Newton method is used to minimize the multiplicative cost function. In this work, we extend the weighted L2-norm regularization scheme onto a triangular grid with an updated formula for gradient and divergence operators. This scheme is tested using synthetic data. The reconstructed images show good piecewise constant characteristics and noise-resistance performance.","PeriodicalId":264754,"journal":{"name":"2017 IEEE International Symposium on Antennas and Propagation & USNC/URSI National Radio Science Meeting","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125461703","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 : 2017-07-09DOI: 10.1109/APUSNCURSINRSM.2017.8073224
M. A. Islam, A. Kiourti, J. Volakis
Typical microwave tomographic techniques reconstruct the real part of the permittivity with much greater accuracy as compared to the imaginary part. In this paper, we propose a method to mitigate the imbalance between the reconstructed complex permittivity components. To do so, the cross-sectional complex permittivity is expressed as summation of some known permittivities weighted by their corresponding fractions. We reconstruct the unknown complex permittivity of the imaging domain by computing the fractions of the known permittivities. A modified Gauss-Newton algorithm formulated for this particular scenario, is employed. Simulation results show that while direct reconstructions of the complex permittivity sometimes fail to obtain balance between relative permittivity and conductivity images, the proposed method leads to excellent reconstruction for both permittivity components.
{"title":"A microwave tomographic technique to enhance real-imaginary permittivity image quality","authors":"M. A. Islam, A. Kiourti, J. Volakis","doi":"10.1109/APUSNCURSINRSM.2017.8073224","DOIUrl":"https://doi.org/10.1109/APUSNCURSINRSM.2017.8073224","url":null,"abstract":"Typical microwave tomographic techniques reconstruct the real part of the permittivity with much greater accuracy as compared to the imaginary part. In this paper, we propose a method to mitigate the imbalance between the reconstructed complex permittivity components. To do so, the cross-sectional complex permittivity is expressed as summation of some known permittivities weighted by their corresponding fractions. We reconstruct the unknown complex permittivity of the imaging domain by computing the fractions of the known permittivities. A modified Gauss-Newton algorithm formulated for this particular scenario, is employed. Simulation results show that while direct reconstructions of the complex permittivity sometimes fail to obtain balance between relative permittivity and conductivity images, the proposed method leads to excellent reconstruction for both permittivity components.","PeriodicalId":264754,"journal":{"name":"2017 IEEE International Symposium on Antennas and Propagation & USNC/URSI National Radio Science Meeting","volume":"74 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130456499","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 : 2017-07-09DOI: 10.1109/APUSNCURSINRSM.2017.8072777
K. Klionovski, A. Shamim, M. Sharawi
In this paper, we present the design of a switched-beam antenna array at millimeter-wave frequencies for future 5G applications. The proposed antenna array is based on wideband patch antenna elements and a Butler matrix feed network. The patch antenna has a broad radiation pattern for wide-angle beam steering and allows the simultaneous operation with two orthogonal linear polarizations. A combination of two separated Butler matrices provides independent beam steering for both polarizations in the wide operating band. The antenna array has a simple multilayer construction, and it is made on a low-cost Rogers laminate.
{"title":"5G antenna array with wide-angle beam steering and dual linear polarizations","authors":"K. Klionovski, A. Shamim, M. Sharawi","doi":"10.1109/APUSNCURSINRSM.2017.8072777","DOIUrl":"https://doi.org/10.1109/APUSNCURSINRSM.2017.8072777","url":null,"abstract":"In this paper, we present the design of a switched-beam antenna array at millimeter-wave frequencies for future 5G applications. The proposed antenna array is based on wideband patch antenna elements and a Butler matrix feed network. The patch antenna has a broad radiation pattern for wide-angle beam steering and allows the simultaneous operation with two orthogonal linear polarizations. A combination of two separated Butler matrices provides independent beam steering for both polarizations in the wide operating band. The antenna array has a simple multilayer construction, and it is made on a low-cost Rogers laminate.","PeriodicalId":264754,"journal":{"name":"2017 IEEE International Symposium on Antennas and Propagation & USNC/URSI National Radio Science Meeting","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115503061","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 : 2017-07-09DOI: 10.1109/APUSNCURSINRSM.2017.8072045
F. Gianesello, E. Lacombe, C. Luxey, A. Bisognin, D. Titz, H. Gulan, T. Zwick, Jorge R. Costa, C. Fernandes
Millimeter-wave and sub-THz low-cost antenna systems are hot topics in order to increase data rates. At these frequencies, quasi-optical antennas are often required to increase achievable gains and therefore link range. At 60 GHz and up-to 140 GHz, low-cost ABS-plastic lenses fabricated in 3D printing technology were successfully demonstrated. In this paper, the same approach is presented in the 215–240 GHz band. For the first time, an integrated antenna in organic substrate is used as a feed in order to illuminate a 3D-printed ABS-plastic lens. A co-design between those two elements was performed, a gain increase of ∼11 dB is then achieved for a lens diameter of 9 mm. A peak gain of 18 dBi has been measured at 235 GHz.
{"title":"Low-cost 3D-printed 240 GHz plastic lens fed by integrated antenna in organic substrate targeting sub-THz high data rate wireless links","authors":"F. Gianesello, E. Lacombe, C. Luxey, A. Bisognin, D. Titz, H. Gulan, T. Zwick, Jorge R. Costa, C. Fernandes","doi":"10.1109/APUSNCURSINRSM.2017.8072045","DOIUrl":"https://doi.org/10.1109/APUSNCURSINRSM.2017.8072045","url":null,"abstract":"Millimeter-wave and sub-THz low-cost antenna systems are hot topics in order to increase data rates. At these frequencies, quasi-optical antennas are often required to increase achievable gains and therefore link range. At 60 GHz and up-to 140 GHz, low-cost ABS-plastic lenses fabricated in 3D printing technology were successfully demonstrated. In this paper, the same approach is presented in the 215–240 GHz band. For the first time, an integrated antenna in organic substrate is used as a feed in order to illuminate a 3D-printed ABS-plastic lens. A co-design between those two elements was performed, a gain increase of ∼11 dB is then achieved for a lens diameter of 9 mm. A peak gain of 18 dBi has been measured at 235 GHz.","PeriodicalId":264754,"journal":{"name":"2017 IEEE International Symposium on Antennas and Propagation & USNC/URSI National Radio Science Meeting","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129995432","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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