Pub Date : 2019-07-18DOI: 10.1109/CSQRWC.2019.8799303
Zhengyong Yu, Xia Yang, Wanchun Tang, Jianping Zhu, Cheng Wang
A novel dual-band three-dimensional (3-D) frequency selective surface (FSS) based on square coaxial waveguides (SCWs) is proposed. The unit cell of the proposed 3-D FSS contains one modified parallel-plate waveguide (MPPW) propagation path and one SCW propagation path. The MPPW path is created by employing a centered via hole. Thus, two transmission poles are produced by odd- and even-mode coupling. The third transmission pole was generated by the square slot resonance in SCW path. After properly adjusting the location of three poles, two passbands with close band spacing are obtained, and the band ratio is 1.31. Owing to the E-filed vectors in different paths are out of phase at the output port, two transmission zeros are introduced for improving frequency selectivity. The E-field analysis of the transmission zeros/poles is presented to explain the operating principle of the proposed 3-D FSS. The simulated results show that the FSS exhibits a stable response to variations of incident angle from 0° to 45° for both TE and TM polarizations.
{"title":"Three-Dimensional Dual-Band Frequency Selective Surface With Close Band Spacing","authors":"Zhengyong Yu, Xia Yang, Wanchun Tang, Jianping Zhu, Cheng Wang","doi":"10.1109/CSQRWC.2019.8799303","DOIUrl":"https://doi.org/10.1109/CSQRWC.2019.8799303","url":null,"abstract":"A novel dual-band three-dimensional (3-D) frequency selective surface (FSS) based on square coaxial waveguides (SCWs) is proposed. The unit cell of the proposed 3-D FSS contains one modified parallel-plate waveguide (MPPW) propagation path and one SCW propagation path. The MPPW path is created by employing a centered via hole. Thus, two transmission poles are produced by odd- and even-mode coupling. The third transmission pole was generated by the square slot resonance in SCW path. After properly adjusting the location of three poles, two passbands with close band spacing are obtained, and the band ratio is 1.31. Owing to the E-filed vectors in different paths are out of phase at the output port, two transmission zeros are introduced for improving frequency selectivity. The E-field analysis of the transmission zeros/poles is presented to explain the operating principle of the proposed 3-D FSS. The simulated results show that the FSS exhibits a stable response to variations of incident angle from 0° to 45° for both TE and TM polarizations.","PeriodicalId":254491,"journal":{"name":"2019 Cross Strait Quad-Regional Radio Science and Wireless Technology Conference (CSQRWC)","volume":"63 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126859955","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 : 2019-07-18DOI: 10.1109/CSQRWC.2019.8799203
Chia-An Yu, K. Chin, R. Lu
This study develops a 24-GHz 1 × 8 patch antenna array for automotive radar applications. The proposed wide-beam antenna array can offer a narrow beamwidth in elevation and a wide beamwidth in azimuth. The series-fed patches are constructed and laterally loaded with parasitic strips. The current direction of the parasitic strips is opposite to the patch current, resulting in gain cancelation and wide beamwidth in the H-plane radiation pattern. The experimental demonstration showed the proposed design achieved a gain of 13.5 dBi and a wide beamwidth of 100°.
{"title":"24-GHz Wide-Beam Patch Antenna Array Laterally Loaded With Parasitic Strips","authors":"Chia-An Yu, K. Chin, R. Lu","doi":"10.1109/CSQRWC.2019.8799203","DOIUrl":"https://doi.org/10.1109/CSQRWC.2019.8799203","url":null,"abstract":"This study develops a 24-GHz 1 × 8 patch antenna array for automotive radar applications. The proposed wide-beam antenna array can offer a narrow beamwidth in elevation and a wide beamwidth in azimuth. The series-fed patches are constructed and laterally loaded with parasitic strips. The current direction of the parasitic strips is opposite to the patch current, resulting in gain cancelation and wide beamwidth in the H-plane radiation pattern. The experimental demonstration showed the proposed design achieved a gain of 13.5 dBi and a wide beamwidth of 100°.","PeriodicalId":254491,"journal":{"name":"2019 Cross Strait Quad-Regional Radio Science and Wireless Technology Conference (CSQRWC)","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134426397","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 : 2019-07-18DOI: 10.1109/CSQRWC.2019.8799109
Shan Wang, Jian Dong, Meng Wang
A Frequency-reconfigurable UWB antenna with switchable single, dual, and triple band-notch functions is presented in this study. In the proposed structure, by etching slots on the patch, the ground, and the feedline, a triple-band-notched characteristic at the WLAN, WiMAX and X-band frequencies is obtained. Then, by introducing switch modes on the slots, the antenna offers eight working modes and can realize an interconversion between UWB, UWB with single-band-notched characteristic, UWB with dual-band-notched characteristic, and UWB with triple-band-notched characteristic. Simulations show that the antenna provides good band-notched functions on the stopbands.
{"title":"A Frequency-Reconfigurable UWB Antenna with Switchable Single/Dual /Triple Band Notch Functions","authors":"Shan Wang, Jian Dong, Meng Wang","doi":"10.1109/CSQRWC.2019.8799109","DOIUrl":"https://doi.org/10.1109/CSQRWC.2019.8799109","url":null,"abstract":"A Frequency-reconfigurable UWB antenna with switchable single, dual, and triple band-notch functions is presented in this study. In the proposed structure, by etching slots on the patch, the ground, and the feedline, a triple-band-notched characteristic at the WLAN, WiMAX and X-band frequencies is obtained. Then, by introducing switch modes on the slots, the antenna offers eight working modes and can realize an interconversion between UWB, UWB with single-band-notched characteristic, UWB with dual-band-notched characteristic, and UWB with triple-band-notched characteristic. Simulations show that the antenna provides good band-notched functions on the stopbands.","PeriodicalId":254491,"journal":{"name":"2019 Cross Strait Quad-Regional Radio Science and Wireless Technology Conference (CSQRWC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130946238","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 : 2019-07-18DOI: 10.1109/CSQRWC.2019.8799209
Liang Zhang, Qiangming Cai, Xiao-Bo Yu, Lin Zhu, Chao Zhang, Yinglei Ren, J. Fan
With improvement in the speed and frequency of electronic circuits, far-end crosstalk (FEXT) problem in printed-circuit board (PCB) neighboring routes becomes one of most critical factors affecting signal quality. In this paper, the FEXT can be mitigated significantly by inserting rectangular-shape resonators (RSR) structures in the coupled microstrip transmission lines where defected microstrip structures (DMS) are etched on the lines. The frequency domain simulation of HFSS shows that the S41 of this proposed structure is decreased more than 16dB around 3.2GHz, compared with the traditional signal routing. The time domain simulation of ADS shows that the peak of FEXT voltage of this structure is improved to 89% compared to the traditional signal routing. It has been successfully demonstrated by simulation and comparison with all previous techniques that, this novel technique gives the best optimum low values for the peak voltage of FEXT. Thus, there is a great potential in DDR5, where the requirement of the high density wiring design is even severe.
{"title":"Far-End Crosstalk Mitigation for Microstrip Lines in High-Speed PCBs","authors":"Liang Zhang, Qiangming Cai, Xiao-Bo Yu, Lin Zhu, Chao Zhang, Yinglei Ren, J. Fan","doi":"10.1109/CSQRWC.2019.8799209","DOIUrl":"https://doi.org/10.1109/CSQRWC.2019.8799209","url":null,"abstract":"With improvement in the speed and frequency of electronic circuits, far-end crosstalk (FEXT) problem in printed-circuit board (PCB) neighboring routes becomes one of most critical factors affecting signal quality. In this paper, the FEXT can be mitigated significantly by inserting rectangular-shape resonators (RSR) structures in the coupled microstrip transmission lines where defected microstrip structures (DMS) are etched on the lines. The frequency domain simulation of HFSS shows that the S41 of this proposed structure is decreased more than 16dB around 3.2GHz, compared with the traditional signal routing. The time domain simulation of ADS shows that the peak of FEXT voltage of this structure is improved to 89% compared to the traditional signal routing. It has been successfully demonstrated by simulation and comparison with all previous techniques that, this novel technique gives the best optimum low values for the peak voltage of FEXT. Thus, there is a great potential in DDR5, where the requirement of the high density wiring design is even severe.","PeriodicalId":254491,"journal":{"name":"2019 Cross Strait Quad-Regional Radio Science and Wireless Technology Conference (CSQRWC)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115478061","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 : 2019-07-18DOI: 10.1109/CSQRWC.2019.8799301
Yan Ran Zhang, Shou Ping Nie, Caojin Yuan
We demonstrate a convenient approach for simultaneously controlling the amplitude, topological charge and position of different shaped curve beams in the xy-plane according to the prescribed application. By utilizing a non-iterative holographic algorithm, along with the optical 4f vector beam generation system, the vector beams are generated along arbitrary trajectories. By means of different shapes and topological charges, the multiplexing of these attractive beams will be helpful for developing information encoding protocols for free-space laser communication.
{"title":"Shaping of independently controllable multiple vector curve beams","authors":"Yan Ran Zhang, Shou Ping Nie, Caojin Yuan","doi":"10.1109/CSQRWC.2019.8799301","DOIUrl":"https://doi.org/10.1109/CSQRWC.2019.8799301","url":null,"abstract":"We demonstrate a convenient approach for simultaneously controlling the amplitude, topological charge and position of different shaped curve beams in the xy-plane according to the prescribed application. By utilizing a non-iterative holographic algorithm, along with the optical 4f vector beam generation system, the vector beams are generated along arbitrary trajectories. By means of different shapes and topological charges, the multiplexing of these attractive beams will be helpful for developing information encoding protocols for free-space laser communication.","PeriodicalId":254491,"journal":{"name":"2019 Cross Strait Quad-Regional Radio Science and Wireless Technology Conference (CSQRWC)","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116445539","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 : 2019-07-18DOI: 10.1109/CSQRWC.2019.8799294
Tong Li, Huanhuan Yang, Fei Guo, Xiangyu Cao, Qi Li
In this paper, a broadband ultra-thin bi-functional metasurface is proposed. The metasurface has only one substrate layer with thickness of 3 mm. Both reflection and transmmision modes are realized simultaneously depending on the polarization of the incident wave. Moreover, the phase variation ranges are larger than 90°for both modes.
{"title":"A Broadband Ultra-Thin Bifunctional Metasurface with Reflection and Transmission Modes","authors":"Tong Li, Huanhuan Yang, Fei Guo, Xiangyu Cao, Qi Li","doi":"10.1109/CSQRWC.2019.8799294","DOIUrl":"https://doi.org/10.1109/CSQRWC.2019.8799294","url":null,"abstract":"In this paper, a broadband ultra-thin bi-functional metasurface is proposed. The metasurface has only one substrate layer with thickness of 3 mm. Both reflection and transmmision modes are realized simultaneously depending on the polarization of the incident wave. Moreover, the phase variation ranges are larger than 90°for both modes.","PeriodicalId":254491,"journal":{"name":"2019 Cross Strait Quad-Regional Radio Science and Wireless Technology Conference (CSQRWC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130408056","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 : 2019-07-18DOI: 10.1109/CSQRWC.2019.8799221
Yijun Cai, K. Xu, Yi Wang, Ronald J. Spiegel, W. Joines
Feasibility study of low profile multilayer patch antennas using stacked BSTO-YIG thin film heterostructure has been investigated. This stacked heterostructure is comprised of an electrical-field-tunable ferroelectric BSTO with two embedded platinum electrodes, a ferromagnetic YIG thin film on a GGG substrate, and a relatively rigid Si substrate. The heterostructure dielectric parameters were analyzed. The calculated results demonstrate that a BSTO-YIG can be only tuned over a relatively narrow bandwidth.
{"title":"Stacked Thin Film Heterostructure with Tunable Ferroelectric BSTO","authors":"Yijun Cai, K. Xu, Yi Wang, Ronald J. Spiegel, W. Joines","doi":"10.1109/CSQRWC.2019.8799221","DOIUrl":"https://doi.org/10.1109/CSQRWC.2019.8799221","url":null,"abstract":"Feasibility study of low profile multilayer patch antennas using stacked BSTO-YIG thin film heterostructure has been investigated. This stacked heterostructure is comprised of an electrical-field-tunable ferroelectric BSTO with two embedded platinum electrodes, a ferromagnetic YIG thin film on a GGG substrate, and a relatively rigid Si substrate. The heterostructure dielectric parameters were analyzed. The calculated results demonstrate that a BSTO-YIG can be only tuned over a relatively narrow bandwidth.","PeriodicalId":254491,"journal":{"name":"2019 Cross Strait Quad-Regional Radio Science and Wireless Technology Conference (CSQRWC)","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115511571","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 : 2019-07-18DOI: 10.1109/CSQRWC.2019.8799251
Jie Chen, L. Han, Rongcao Yang, Wenmei Zhang
A decoupling method for a slot antenna array is proposed in this paper. The array-antenna decoupling surface (ADS), which consists of partial reflection metal patches, is designed to reduce the mutual coupling among antenna elements. A prototype of a four elements slot antenna array using ADS is demonstrated. Simulation results show that the proposed antenna array achieves an impedance bandwidth of 2.35-2.545 GHz, low mutual coupling of less than -15 dB.
{"title":"Design of a Slot Antenna Array Using Array-antenna Decoupling Surface","authors":"Jie Chen, L. Han, Rongcao Yang, Wenmei Zhang","doi":"10.1109/CSQRWC.2019.8799251","DOIUrl":"https://doi.org/10.1109/CSQRWC.2019.8799251","url":null,"abstract":"A decoupling method for a slot antenna array is proposed in this paper. The array-antenna decoupling surface (ADS), which consists of partial reflection metal patches, is designed to reduce the mutual coupling among antenna elements. A prototype of a four elements slot antenna array using ADS is demonstrated. Simulation results show that the proposed antenna array achieves an impedance bandwidth of 2.35-2.545 GHz, low mutual coupling of less than -15 dB.","PeriodicalId":254491,"journal":{"name":"2019 Cross Strait Quad-Regional Radio Science and Wireless Technology Conference (CSQRWC)","volume":"62 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121918175","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 : 2019-07-18DOI: 10.1109/CSQRWC.2019.8799280
Yurou Su, Guizhen Lu
An improved scattering field measurement model is adopted to calculate the scattering field under the condition of the Born Approximation. The relative dielectric constant of the object to be measured is discretized through the integral equation of electromagnetic field. DE algorithm is used to solve the minimum fitness function for imaging. Simulation results show that the improved model can effectively enhance the accuracy of the dielectric constant.
{"title":"An Improved Inversion Model for Two-Dimensional Microwave Imaging","authors":"Yurou Su, Guizhen Lu","doi":"10.1109/CSQRWC.2019.8799280","DOIUrl":"https://doi.org/10.1109/CSQRWC.2019.8799280","url":null,"abstract":"An improved scattering field measurement model is adopted to calculate the scattering field under the condition of the Born Approximation. The relative dielectric constant of the object to be measured is discretized through the integral equation of electromagnetic field. DE algorithm is used to solve the minimum fitness function for imaging. Simulation results show that the improved model can effectively enhance the accuracy of the dielectric constant.","PeriodicalId":254491,"journal":{"name":"2019 Cross Strait Quad-Regional Radio Science and Wireless Technology Conference (CSQRWC)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128646357","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 : 2019-07-18DOI: 10.1109/CSQRWC.2019.8799255
K. Chung, Ruiqi Liu, Yansheng Li, Botao Feng
A new type of microwave planar transmission line is introduced in this paper, wherein a microstrip line (ML) is superimposed onto a coplanar waveguide (CPW) and connected with copper vias. The new planar line is designated as a composite ML/CPW line that owns a unique feature of dual signal path on a single dielectric slab. By employing meander or zigzagging line sections for the design of RF/microwave circuits such as power divider, the substrate slab area can be significantly reduced when compared with conventional planar transmission lines. Through design examples, this paper demonstrates the effectiveness of the transmission line that is well-suited for RF/microwave circuits miniaturization.
{"title":"A Study of Composite Microstrip/Coplanar-Waveguide Transmission Line for Miniaturization of Microwave Planar Circuits","authors":"K. Chung, Ruiqi Liu, Yansheng Li, Botao Feng","doi":"10.1109/CSQRWC.2019.8799255","DOIUrl":"https://doi.org/10.1109/CSQRWC.2019.8799255","url":null,"abstract":"A new type of microwave planar transmission line is introduced in this paper, wherein a microstrip line (ML) is superimposed onto a coplanar waveguide (CPW) and connected with copper vias. The new planar line is designated as a composite ML/CPW line that owns a unique feature of dual signal path on a single dielectric slab. By employing meander or zigzagging line sections for the design of RF/microwave circuits such as power divider, the substrate slab area can be significantly reduced when compared with conventional planar transmission lines. Through design examples, this paper demonstrates the effectiveness of the transmission line that is well-suited for RF/microwave circuits miniaturization.","PeriodicalId":254491,"journal":{"name":"2019 Cross Strait Quad-Regional Radio Science and Wireless Technology Conference (CSQRWC)","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130364736","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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