Pub Date : 2021-11-28DOI: 10.1109/iwem53379.2021.9790433
L. Liao, X. Chen
In our proposal, a dual-polarized high gain antenna for wireless power transfer is designed. The proposed antenna etches four coupling slots on the antenna ground, four uniform coupling strips are made on the top layer of the antenna ground, the coupling strips are used to feed the radiation elements. Each coupling slot delivers the input energy to the corresponding coupling strip above it, every coupling strip excites the two adjacent radiation elements simultaneously. The presented stacked patch antenna is devised as a completely symmetric structure, resulting in simple structure and high isolation. The proposed antenna operating at 5.8 GHz, simulation results reveal that it has high gain of 9.6 dBi, low coupling of 22 dB and low profile of 0.056λ0.
{"title":"Dual-Polarized High Gain Stacked Patch Antenna for Wireless Power Transfer","authors":"L. Liao, X. Chen","doi":"10.1109/iwem53379.2021.9790433","DOIUrl":"https://doi.org/10.1109/iwem53379.2021.9790433","url":null,"abstract":"In our proposal, a dual-polarized high gain antenna for wireless power transfer is designed. The proposed antenna etches four coupling slots on the antenna ground, four uniform coupling strips are made on the top layer of the antenna ground, the coupling strips are used to feed the radiation elements. Each coupling slot delivers the input energy to the corresponding coupling strip above it, every coupling strip excites the two adjacent radiation elements simultaneously. The presented stacked patch antenna is devised as a completely symmetric structure, resulting in simple structure and high isolation. The proposed antenna operating at 5.8 GHz, simulation results reveal that it has high gain of 9.6 dBi, low coupling of 22 dB and low profile of 0.056λ0.","PeriodicalId":141204,"journal":{"name":"2021 IEEE International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM)","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115436848","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 : 2021-11-28DOI: 10.1109/iwem53379.2021.9790417
Heng Zhang, Chunlai Jia, Zhaolong Li, Rushan Chen
The conventional method of moment (MOM) is often difficult to achieve fast and accurate electromagnetic simulation for multi-scale quasi-periodic structures. In this paper, the electric field integral equation(A-EFIE) based characteristic mode(CM) is used as the entire-domain basis function to accelerate the electromagnetic simulation of multi-scale quasi-periodic structures. The numerical examples are given to show that the efficiency of AEFIE is greatly improved for multi-scale quasi-periodic structures.
{"title":"Characteristic Mode Method for Multi-Scale Quasi-Periodic Structures","authors":"Heng Zhang, Chunlai Jia, Zhaolong Li, Rushan Chen","doi":"10.1109/iwem53379.2021.9790417","DOIUrl":"https://doi.org/10.1109/iwem53379.2021.9790417","url":null,"abstract":"The conventional method of moment (MOM) is often difficult to achieve fast and accurate electromagnetic simulation for multi-scale quasi-periodic structures. In this paper, the electric field integral equation(A-EFIE) based characteristic mode(CM) is used as the entire-domain basis function to accelerate the electromagnetic simulation of multi-scale quasi-periodic structures. The numerical examples are given to show that the efficiency of AEFIE is greatly improved for multi-scale quasi-periodic structures.","PeriodicalId":141204,"journal":{"name":"2021 IEEE International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM)","volume":"67 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115733889","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 : 2021-11-28DOI: 10.1109/iwem53379.2021.9790645
Piao Guo, M. Tang, Dajiang Li, Kun‐Zhi Hu, R. Ziolkowski
Electrically small, bandwidth enhanced, vertically polarized, omnidirectional and endfire-radiated filtennas are presented. They are enabled with two hybrid λ/4 open-circuit stubs that not only produce radiation nulls at the stopband to enhance the frequency skirt, but they also introduce an additional in-band resonance which has no influence on the original radiating mode. The operational bandwidth is improved significantly by the presence and overlapping of these two resonant modes. The tested values are well consistent with the simulated ones and demonstrate the omnidirectional filtenna exhibited a fractional bandwidth (FBW) of 11.3%, a 3.01 dBi highest gain and an electrically small size with ka = 0.73. The endfire filtenna, which is electrically small with ka = 0.93, attained a 12.8% FBW and a 6.09 dBi highest gain.
{"title":"Development of Electrically Small, Bandwidth Enhanced, Vertically Polarized Filtennas","authors":"Piao Guo, M. Tang, Dajiang Li, Kun‐Zhi Hu, R. Ziolkowski","doi":"10.1109/iwem53379.2021.9790645","DOIUrl":"https://doi.org/10.1109/iwem53379.2021.9790645","url":null,"abstract":"Electrically small, bandwidth enhanced, vertically polarized, omnidirectional and endfire-radiated filtennas are presented. They are enabled with two hybrid λ/4 open-circuit stubs that not only produce radiation nulls at the stopband to enhance the frequency skirt, but they also introduce an additional in-band resonance which has no influence on the original radiating mode. The operational bandwidth is improved significantly by the presence and overlapping of these two resonant modes. The tested values are well consistent with the simulated ones and demonstrate the omnidirectional filtenna exhibited a fractional bandwidth (FBW) of 11.3%, a 3.01 dBi highest gain and an electrically small size with ka = 0.73. The endfire filtenna, which is electrically small with ka = 0.93, attained a 12.8% FBW and a 6.09 dBi highest gain.","PeriodicalId":141204,"journal":{"name":"2021 IEEE International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116913841","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 : 2021-11-28DOI: 10.1109/iwem53379.2021.9790712
Rong Mao, Lu Xu, Haoyu Gao, Shuang-Yuan Sun, Zhiping Yin, Jun Yang
We propose a metamaterial (MM) modulation device which is based on nematic liquid crystal (NLC) with double microstructure layers in 330-500 GHz frequency range. The proposed device is composed of an X-shaped periodic structure printed on 280 μm thick quartz substrates. Simulated and experimental results with the device are in general agreement within the designed frequency range. The test results divulge that the maximum modulation depth is 94.34% at 383.45 GHz. When voltage applied to the electrode increases from 0 V to 30 V, the maximum transmittance of the entire frequency range varies from 88.76% to 80.47%, and the resonant frequency is shifted from 372.78 GHz to 340.75 GHz. The proposed device provides effective assistance for millimeter wave and terahertz (THz) bands applications.
{"title":"Liquid-crystal-based Electronically Tunable Metamaterial Modulator in Terahertz Band","authors":"Rong Mao, Lu Xu, Haoyu Gao, Shuang-Yuan Sun, Zhiping Yin, Jun Yang","doi":"10.1109/iwem53379.2021.9790712","DOIUrl":"https://doi.org/10.1109/iwem53379.2021.9790712","url":null,"abstract":"We propose a metamaterial (MM) modulation device which is based on nematic liquid crystal (NLC) with double microstructure layers in 330-500 GHz frequency range. The proposed device is composed of an X-shaped periodic structure printed on 280 μm thick quartz substrates. Simulated and experimental results with the device are in general agreement within the designed frequency range. The test results divulge that the maximum modulation depth is 94.34% at 383.45 GHz. When voltage applied to the electrode increases from 0 V to 30 V, the maximum transmittance of the entire frequency range varies from 88.76% to 80.47%, and the resonant frequency is shifted from 372.78 GHz to 340.75 GHz. The proposed device provides effective assistance for millimeter wave and terahertz (THz) bands applications.","PeriodicalId":141204,"journal":{"name":"2021 IEEE International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116992175","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 : 2021-11-28DOI: 10.1109/iwem53379.2021.9790685
T. Tomura, Soichi Sakurai, J. Hirokawa, Shulabh Gupta
In parallel-fed waveguide slot array antennas, it is difficult to control the excitation phase of each element due to the complexity of the structure. A dielectric resonator-based transmit array, which can be loaded on antennas and whose excitation phase can be controlled, has been developed and evaluated. However, it requires drilling or laser processing, and fabrication error and productivity are issues. Transmit arrays based on printed circuit board (PCB) processing technology have been proposed, but they are narrow bandwidth and multilayer structures. In this paper, we present a transmit array using a single layer of PCB, and report on its design and measurement results.
{"title":"Excitation Phase Control of Parallel-Fed Waveguide Slot Array Antenna Using Printed Circuit Board Single-Layer Structure Transmit Array","authors":"T. Tomura, Soichi Sakurai, J. Hirokawa, Shulabh Gupta","doi":"10.1109/iwem53379.2021.9790685","DOIUrl":"https://doi.org/10.1109/iwem53379.2021.9790685","url":null,"abstract":"In parallel-fed waveguide slot array antennas, it is difficult to control the excitation phase of each element due to the complexity of the structure. A dielectric resonator-based transmit array, which can be loaded on antennas and whose excitation phase can be controlled, has been developed and evaluated. However, it requires drilling or laser processing, and fabrication error and productivity are issues. Transmit arrays based on printed circuit board (PCB) processing technology have been proposed, but they are narrow bandwidth and multilayer structures. In this paper, we present a transmit array using a single layer of PCB, and report on its design and measurement results.","PeriodicalId":141204,"journal":{"name":"2021 IEEE International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM)","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117120796","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 : 2021-11-28DOI: 10.1109/iwem53379.2021.9790409
Su Jinghu, Huang Li, Zhang Yuanyuan, Zeng Di
A novel 77GHz flat-shoulder beam array antenna is proposed as the transmitting antenna for 77GHz automotive radar application. The array is composed of six linear series-fed patch arrays and a microstrip line feeding network. Simulated results show that flat-shoulder shaped radiation patterns in H-plane achieved by proposed array synthesis can meet the demands of both 77GHz long-range and medium-range automotive radar.
{"title":"A 77GHz Millimeter Radar Flat-Shoulder Beam Array Antenna Design","authors":"Su Jinghu, Huang Li, Zhang Yuanyuan, Zeng Di","doi":"10.1109/iwem53379.2021.9790409","DOIUrl":"https://doi.org/10.1109/iwem53379.2021.9790409","url":null,"abstract":"A novel 77GHz flat-shoulder beam array antenna is proposed as the transmitting antenna for 77GHz automotive radar application. The array is composed of six linear series-fed patch arrays and a microstrip line feeding network. Simulated results show that flat-shoulder shaped radiation patterns in H-plane achieved by proposed array synthesis can meet the demands of both 77GHz long-range and medium-range automotive radar.","PeriodicalId":141204,"journal":{"name":"2021 IEEE International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM)","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117265320","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 : 2021-11-28DOI: 10.1109/iwem53379.2021.9790671
Junxiao Li, Kai Xu, Jin Shi
An effective approach of suppressing the mutual coupling for the dielectric resonator antennas (DRAs) with wide bandwidth using metal structures is investigated and exhibited in the article. The difference with the conventional antenna is that the proposed design shows integrated capability for both antenna and decoupling structure because of printed circuit board (PCB) technology. The results show that the high isolation over 32.3 dB has been achieved in the effective bandwidth from 10.22 GHz to 13.37 GHz or 26.7%.
{"title":"High Isolation Dielectric Resonator Antenna with Wideband","authors":"Junxiao Li, Kai Xu, Jin Shi","doi":"10.1109/iwem53379.2021.9790671","DOIUrl":"https://doi.org/10.1109/iwem53379.2021.9790671","url":null,"abstract":"An effective approach of suppressing the mutual coupling for the dielectric resonator antennas (DRAs) with wide bandwidth using metal structures is investigated and exhibited in the article. The difference with the conventional antenna is that the proposed design shows integrated capability for both antenna and decoupling structure because of printed circuit board (PCB) technology. The results show that the high isolation over 32.3 dB has been achieved in the effective bandwidth from 10.22 GHz to 13.37 GHz or 26.7%.","PeriodicalId":141204,"journal":{"name":"2021 IEEE International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM)","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123288989","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 : 2021-11-28DOI: 10.1109/iWEM53379.2021.9790641
Z. Cao, X. Chen, B. Huang, P. Gu, D. Ding, R. Chen
In the paper, a new ultra-wideband tightly coupled antenna array (TCA) is designed. The array unit is mainly based on the traditional Vivaldi antenna structure, to which trapezoidal slots are added and metal vias are used to extend the radiating arms, thus forming a flat plate coupling capacitor to reduce the overall profile height of the antenna. The wide foot matching layer is placed on top of the antenna, and T-slots are added on both sides of the Vivaldi opening to increase the resonance point and widen the bandwidth. This unit is formed into an array, and the array takes the form of a uniform planar array. Based on the above improved dielectric layer loading low-profile array can achieve VSWR<2.5 at 3~18GHz with 15mm profile height, and also can achieve high radiation efficiency, which is >85% in the full band.
{"title":"Low-profile ultra-wideband array design based on dielectric layer loading","authors":"Z. Cao, X. Chen, B. Huang, P. Gu, D. Ding, R. Chen","doi":"10.1109/iWEM53379.2021.9790641","DOIUrl":"https://doi.org/10.1109/iWEM53379.2021.9790641","url":null,"abstract":"In the paper, a new ultra-wideband tightly coupled antenna array (TCA) is designed. The array unit is mainly based on the traditional Vivaldi antenna structure, to which trapezoidal slots are added and metal vias are used to extend the radiating arms, thus forming a flat plate coupling capacitor to reduce the overall profile height of the antenna. The wide foot matching layer is placed on top of the antenna, and T-slots are added on both sides of the Vivaldi opening to increase the resonance point and widen the bandwidth. This unit is formed into an array, and the array takes the form of a uniform planar array. Based on the above improved dielectric layer loading low-profile array can achieve VSWR<2.5 at 3~18GHz with 15mm profile height, and also can achieve high radiation efficiency, which is >85% in the full band.","PeriodicalId":141204,"journal":{"name":"2021 IEEE International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115321579","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 : 2021-11-28DOI: 10.1109/iwem53379.2021.9790621
Linying Fang, G. Deng
This paper proposes a highly sensitive metamaterial intended for strain sensing. The proposed metamaterial is suitable for strain sensing because it has advantages of easy stretching and TPU substrate expansion, making it possible to observe different absorption peak frequencies under different strains. Numerical simulations show that the peak absorption frequency of the sensor varies from 107.9 GHz to 118.5 GHz as the tensile force along x-axis increases from 0 to 4.06 N.
{"title":"Design and Simulation of Strain Sensitive Metamaterial","authors":"Linying Fang, G. Deng","doi":"10.1109/iwem53379.2021.9790621","DOIUrl":"https://doi.org/10.1109/iwem53379.2021.9790621","url":null,"abstract":"This paper proposes a highly sensitive metamaterial intended for strain sensing. The proposed metamaterial is suitable for strain sensing because it has advantages of easy stretching and TPU substrate expansion, making it possible to observe different absorption peak frequencies under different strains. Numerical simulations show that the peak absorption frequency of the sensor varies from 107.9 GHz to 118.5 GHz as the tensile force along x-axis increases from 0 to 4.06 N.","PeriodicalId":141204,"journal":{"name":"2021 IEEE International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM)","volume":"447 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116515385","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 : 2021-11-28DOI: 10.1109/iwem53379.2021.9790439
Gu Jing, Yang Chuo
In this paper, an antenna with broadband and linearly polarized omni-directional radiation pattern is discussed. The antenna consists of four metal cylinders for energy transmission and four short-circuit pins used for radiation. The operating frequency bandwidth of the linearly polarized antenna increases with the increase of the dip-angle. The simulated results show the relative-bandwidth of the antenna increases from 14% to 34% as the dip-angle increases from 0deg to 30deg.
{"title":"Design of an Antennas with Broadband and Linearly Polarized Omni-directional Radiation Pattern","authors":"Gu Jing, Yang Chuo","doi":"10.1109/iwem53379.2021.9790439","DOIUrl":"https://doi.org/10.1109/iwem53379.2021.9790439","url":null,"abstract":"In this paper, an antenna with broadband and linearly polarized omni-directional radiation pattern is discussed. The antenna consists of four metal cylinders for energy transmission and four short-circuit pins used for radiation. The operating frequency bandwidth of the linearly polarized antenna increases with the increase of the dip-angle. The simulated results show the relative-bandwidth of the antenna increases from 14% to 34% as the dip-angle increases from 0deg to 30deg.","PeriodicalId":141204,"journal":{"name":"2021 IEEE International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114417278","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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