{"title":"Novel Polarization Conversion Metasurface Based Circular Polarized Slot Antenna with Low Profile","authors":"Zhong Tao, Hou Zhang, Haiyang Xu, Qiang Chen","doi":"10.1109/CSQRWC.2019.8799106","DOIUrl":"https://doi.org/10.1109/CSQRWC.2019.8799106","url":null,"abstract":"A low-profile, wideband circular polarized (CP) slot antenna based on a novel polarization conversion metasurface (PCM) is illuminated in this paper. The CP antenna is composed of a feeding slot antenna and a novel PCM with two axisymmetric patches. PCM realizes the 90 degrees polarization conversion reflection for the incident wave from 5.8 GHz to 7.2 GHz. The measured results showed that the CP antenna achieves good performance with a -10 dB bandwidth of 2.5 GHz (4.5–7 GHz) and an AR bandwidth of 1 GHz (5.3–6.3 GHz). In addition, the proposed antenna has good circular polarization characteristics, simple structure and low profile, which make it a viable candidate for C-band (4–8 GHz) application.","PeriodicalId":254491,"journal":{"name":"2019 Cross Strait Quad-Regional Radio Science and Wireless Technology Conference (CSQRWC)","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123598879","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}
{"title":"Secrecy Information Transmission Optimization of MIMO System","authors":"Xue Xiaoqin, Meng Gang","doi":"10.1109/CSQRWC.2019.8799343","DOIUrl":"https://doi.org/10.1109/CSQRWC.2019.8799343","url":null,"abstract":"This paper studies the Semidefinite Relaxation (SDR) precoding technique and applies it into MIMO system to minimize the transmission power with a certain secrecy channel capacity. In this paper, the null space precoding algorithm and the Taylor precoding algorithm are introduced and compared. The simulation results demonstrate that in the MIMO eavesdropping model, Taylor precoding algorithm can achieve the minimum transmitting power with a certain safety channel capacity. Based on the advantages and disadvantages of the two precoding algorithms in terms of computational complexity and optimization performance, we propose to combine the two precoding algorithms to obtain the optimal solution and greatly reduce the simulation time.","PeriodicalId":254491,"journal":{"name":"2019 Cross Strait Quad-Regional Radio Science and Wireless Technology Conference (CSQRWC)","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123614575","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}
{"title":"Effect of Loss Tangent on the Performance of Retrodirective Array Based on Microstrip Patch","authors":"Jie Zuo, Dazhi Piao","doi":"10.1109/CSQRWC.2019.8799169","DOIUrl":"https://doi.org/10.1109/CSQRWC.2019.8799169","url":null,"abstract":"Based on the theoretical analysis and some simulations by HFSS, the effect of loss tangent of the substrate material on the performance of retrodirective array is investigated, by a microstrip Van Atta array working at 5.8 GHz. Simulation results show that, with a good antenna matching, the retrodirective performance of the Van Atta array will deteriorate continuously with the increasing of loss tangent from 0.00125 to 0.02. For tanδ larger than 0.005, the retrodirective performance decreases seriously. This study provides a reference for the material selection in the design of passive retrodirective array.","PeriodicalId":254491,"journal":{"name":"2019 Cross Strait Quad-Regional Radio Science and Wireless Technology Conference (CSQRWC)","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123640334","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}
{"title":"Analysis on plasmonic modes within rectangular sub-wavelength holes on metallic nanofilms","authors":"Weiwei Li, Zijia Yu, Weihao Liu, Q. Jia, Yalin Lu","doi":"10.1109/CSQRWC.2019.8799313","DOIUrl":"https://doi.org/10.1109/CSQRWC.2019.8799313","url":null,"abstract":"The nanoscale rectangular sub-wavelength hole (RSH), functioned by plasmonic modes, is a key component in modern nanophotonics since it holds various unconventional optical phenomena and has many interesting applications. Yet to date, its analytic theory still has not been well-developed. Here we aim to present detailed analysis on the plasmonic modes within RSH by using full waveguide theory with real metal. We obtain the complete field expressions and derive out the dispersion equations of guided modes in metallic waveguide, based on which we achieve the resonant properties of RSH. Influences of size and shape of RSH on resonant properties are revealed, the results of which are verified by numerical simulations. This theory is helpful for understanding the unconventional optical phenomena based on RSH and for developing new optical devices.","PeriodicalId":254491,"journal":{"name":"2019 Cross Strait Quad-Regional Radio Science and Wireless Technology Conference (CSQRWC)","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122023924","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}
{"title":"Simulation of full-polarization electromagnetic backscattering characteristics of large number of high-density chaff clouds","authors":"Lifei Zhang, Zhensen Wu","doi":"10.1109/CSQRWC.2019.8799186","DOIUrl":"https://doi.org/10.1109/CSQRWC.2019.8799186","url":null,"abstract":"A foil strip is a strip of metal consisting of aluminum foil strips or metal coated fibers. When the radar beam is incident, it forms a scattering echo that is used to shield or shield the aircraft or cause the enemy tracking radar to lose control. The chaff passive interference technology was first used in World War II. Due to its low cost, convenient use and good interference effect, it is still the main interference technology. The large number and high density are the main development trends of passive jamming of chaff. Based on vector transport theory, the Monte Carlo solution of chaff cloud vector transport theory is obtained. The full-polarization backscattering characteristics of a large number of high-density chaff clouds are simulated.","PeriodicalId":254491,"journal":{"name":"2019 Cross Strait Quad-Regional Radio Science and Wireless Technology Conference (CSQRWC)","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122042528","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}
{"title":"Design of a Wideband Dual-Polarized Magneto-Electric Dipole Antenna","authors":"Geng Zhang, Wen Jin, Mang Chen, Longwei He","doi":"10.1109/CSQRWC.2019.8799241","DOIUrl":"https://doi.org/10.1109/CSQRWC.2019.8799241","url":null,"abstract":"A novel dual-polarized magneto-electric dipole antenna with wideband performance is presented in this communication. The folded jagged edges of the radiating patch contribute to a better impedance matching, as well as a compact size. The antenna is fed by a crossed coupling structure, thus dual-polarizations and a high port isolation are obtained. A parametric study is performed for providing practical design guidelines. Simulation results show that an impedance bandwidth of 100% for VSWR ≤ 2.0 from 1GHz to 3GHz is achieved. Stable radiation patterns with low crosspolarization levels are also obtained across the operation band.","PeriodicalId":254491,"journal":{"name":"2019 Cross Strait Quad-Regional Radio Science and Wireless Technology Conference (CSQRWC)","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124792409","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}
Shengxiang Zhu, Ke Yang, J. Ouyang, Xiaohuan Wu, Luyao Xie
{"title":"Collaborative Beamforming for Cognitive UAV Relaying System Coexisting with Satellite Networks","authors":"Shengxiang Zhu, Ke Yang, J. Ouyang, Xiaohuan Wu, Luyao Xie","doi":"10.1109/CSQRWC.2019.8799232","DOIUrl":"https://doi.org/10.1109/CSQRWC.2019.8799232","url":null,"abstract":"In this paper, we study a cognitive unmanned aerial vehicle (UAV) relaying system (CURS) which shares the downlink frequency of a satellite network. Specifically, we propose a collaborative beamforming (CBF) scheme that maximizes the signal-to-interference plus noise ratio (SINR) of CURS, subjects to the SINR requirements of the satellite network and the individual transmit power constraints of UAV relays. Since the original optimization problem is non-convex and mathematically intractable, we first transform it into an approximate convex one by means of the Charnes-Cooper transformation and the penalty function method as well as the difference of two-convex functions (D.C.) approach. Then a convergence proven iterative algorithm is designed to find the optimal CBF solution. Simulation results are provided to demonstrate the effectiveness of the proposed scheme and the impact of UAV transmit power and satellite network SINR requirements on the CURS.","PeriodicalId":254491,"journal":{"name":"2019 Cross Strait Quad-Regional Radio Science and Wireless Technology Conference (CSQRWC)","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129480237","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}
{"title":"A Wideband Cavity-Backed Antenna with Good Impedance Matching","authors":"Boyi Gong, Bo Li, Weiren Zhu","doi":"10.1109/CSQRWC.2019.8799282","DOIUrl":"https://doi.org/10.1109/CSQRWC.2019.8799282","url":null,"abstract":"Based on the conventional dipole antenna, a new broadband antenna with high gain working at the L- and S-band has been designed, which is composed of a metallic cylindrical cavity filled with dielectric and a pair of dipole patches fed with balanceable coaxial input. The simulations and optimization have been carried out with three-dimensional full-wave electromagnetic simulation. Results demonstrate that it has a good impedance matching (VSWR<1.5) with a relative bandwidth of 46% from 1.67 to 2.67 GHz, and the gain increases from 6.72 to 9.67dB over the operation frequency range.","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":"2019-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129323773","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}
Rundong Jiang, Jinjie Yao, Min Wang, Ruirui Wang, Xinhua Dai, Zeshu An
{"title":"An Improved Interdigital-based Parallel-Coupled Microstrip BandPass Filter","authors":"Rundong Jiang, Jinjie Yao, Min Wang, Ruirui Wang, Xinhua Dai, Zeshu An","doi":"10.1109/CSQRWC.2019.8799334","DOIUrl":"https://doi.org/10.1109/CSQRWC.2019.8799334","url":null,"abstract":"This paper presents a microstrip bandpass filter using an interdigital structure. The filter is designed at a center frequency of 36GHz, while the bandwidth is 4GHz. In the traditional coupled microstrip filter, especially working in the Ka band, the distance between the first coupled microstrip is a little close, so, it can be a little difficult to produce. However, the interdigital structure provides a closer coupling, and thus, it performs better than the first coupled microstrip. This paper based on the traditional coupled microstrip bandpass filter and designed a bandpass filter using interdigital structure optimized by HFSS.","PeriodicalId":254491,"journal":{"name":"2019 Cross Strait Quad-Regional Radio Science and Wireless Technology Conference (CSQRWC)","volume":"112 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127135779","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}
{"title":"A Linear to Circular Polarization Converter Based on Substrate Integrated Waveguide Cavities","authors":"Yu Zuo, Jialin Shi, Jianxuan Li, Zusheng Jin, Rui Chen, Yong Zhang","doi":"10.1109/CSQRWC.2019.8799325","DOIUrl":"https://doi.org/10.1109/CSQRWC.2019.8799325","url":null,"abstract":"This paper presents a polarization converter that a linearly polarized incident wave can be converted into a circularly polarized wave. The proposed structure is composed of a two-dimensional periodic arrangement of dielectric-filled substrate integrated waveguide cavities (SIWC) in unit-cell of which double-layer slot frequency selective surface (FSS) cascaded with dielectric layers. Through the coupling of the input and output waves with slots on the layers, two linearly polarized outgoing waves with orthogonal polarization can be transmitted. When the two orthogonally polarized components are combined and adjusted with equivalent amplitude and 90° phase difference, they can be synthesized into circularly polarized wave.","PeriodicalId":254491,"journal":{"name":"2019 Cross Strait Quad-Regional Radio Science and Wireless Technology Conference (CSQRWC)","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132387681","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}