{"title":"Terahertz On-chip Tunable Spoof Surface Plasmon Polaritons Transmission Lines Based on Vanadium Dioxide","authors":"Huali Zhu, Yong Zhang, Murong Haoding, Yukun Li, Xie Jinxiong, Chengkai Wu","doi":"10.1109/IMWS-AMP53428.2021.9643897","DOIUrl":"https://doi.org/10.1109/IMWS-AMP53428.2021.9643897","url":null,"abstract":"In this paper, we propose a tunable terahertz on-chip spoof surface plasmon polaritons transmission line (SSPPs TL) based on the insulating-conducting phase transition property of vanadium dioxide (VO2). The dispersion characteristics of the on-chip SSPPs unit is simulated under the $0.25-mu mathrm{m}$ InP DHBT technology, and the transition from GCPW to SSPPs TL is realized by using the gradient grooves. In the design, the top and bottom layer of the VO2 film are connected to the M1 and M3, respectively, to achieve the dynamic manipulation of insertion loss $S_{21}$ of the SSPPs TL. When the VO2 is insulating, the $S_{21}$ of the SSPPs TL is better than 4 dB from the frequency range of 100 GHz to 500 GHz. Alternatively, when the VO2 is in the conducting state, the $S_{21}$ of the SSPPs TL is larger than 18 dB. This work may have extensive potential applications in integrated terahertz plasmonic dynamic devices.","PeriodicalId":143802,"journal":{"name":"2021 IEEE MTT-S International Microwave Workshop Series on Advanced Materials and Processes for RF and THz Applications (IMWS-AMP)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125447371","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":"Pattern-Reconfigurable Half-Mode Substrate-Integrated Waveguide Antenna","authors":"Peicong Chen, Lei Ge","doi":"10.1109/IMWS-AMP53428.2021.9643948","DOIUrl":"https://doi.org/10.1109/IMWS-AMP53428.2021.9643948","url":null,"abstract":"In this paper, an effective method of designing low-profile cavity-backed pattern-reconfigurable antenna based on half-mode substrate-integrated waveguide (HMSIW) technique is proposed. The HMSIW cavity fed by an inset $50 Omega$ microstrip feedline excite a rectangular patch. Different radiation direction are realized by electronically controlling the states of several PIN diodes between HMSIW and a pair of patches. Otherwise, by switching the on/off-state of the PIN diodes, the slot can operate as a radiating element or a grating reflector. The proposed antenna is made on a single-layer substrate with a low profile of 0.021 free-space wavelength using printed circuit board (PCB) process. It also perform attractive features such as simple structure, high gain and low cross polarization level.","PeriodicalId":143802,"journal":{"name":"2021 IEEE MTT-S International Microwave Workshop Series on Advanced Materials and Processes for RF and THz Applications (IMWS-AMP)","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128229122","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}
Yifan Yu, Yongle Wu, Yuhao Yang, Weimin Wang, Jianhong Chen, C. Jin
{"title":"A Low-Cost Millimeter-Wave High-Gain Slot Antenna Array Fed by Multilayer Waveguide","authors":"Yifan Yu, Yongle Wu, Yuhao Yang, Weimin Wang, Jianhong Chen, C. Jin","doi":"10.1109/IMWS-AMP53428.2021.9643905","DOIUrl":"https://doi.org/10.1109/IMWS-AMP53428.2021.9643905","url":null,"abstract":"A millimeter-wave antenna array fed by multilayer waveguide is proposed in this paper. Different from traditional rectangular cavity waveguide, the multilayer waveguide structure used for the antenna is constructed by stacking several thin metal plates. The metal plates are filled with air and do not require any electrical contact. The electromagnetic band gap (EBG) structure is added to the thin metal plates to prevent the leakage of electromagnetic waves within a certain frequency between the metal layers. By using this waveguide structure, manufacturing cost can be greatly reduced. Introduce this waveguide structure into the design of the waveguide slot antenna, and a highperformance millimeter-wave antenna is realized. This 12-element antenna array works at W-band, the gain at the highest point is more than 21 dBi, and the difference between the side lobe and the main lobe exceeds 12 dB. The proposed antenna array could be an excellent candidate for designing millimeter-wave waveguide slot antenna, and can be used for navigation, radar, and other high-frequency communication systems.","PeriodicalId":143802,"journal":{"name":"2021 IEEE MTT-S International Microwave Workshop Series on Advanced Materials and Processes for RF and THz Applications (IMWS-AMP)","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128904765","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 Wide-Angle Scanning Phased Array with Low Gain Variation Using Novel Feeding Scheme","authors":"C. Shao, H. Chu, Xiao-hua Zhu","doi":"10.1109/IMWS-AMP53428.2021.9643951","DOIUrl":"https://doi.org/10.1109/IMWS-AMP53428.2021.9643951","url":null,"abstract":"A wide-angle scanning phased array with low gain variation is proposed. In order to widen the scanning range for the phased array and keep the gain flatness, a novel feeding scheme is proposed in this design. A pair of radiators has been attached to a two-way power divider by two identical reconfigurable phase shifters respectively. By utilizing the reconfigurable phase shifters, each antenna unit has three reconfigurable modes. Each mode can matched to different scanning range to realize low gain variation. As a result, wide-angle scanning capability and low gain fluctuation can be realized at the same time. In order verify the proposed concept, a phased array constructed by four antenna units has been designed and simulated. The simulated results validate the proposed design exhibiting a good performance of wide-angle scanning characteristic and low gain fluctuation. This design can be also applicable in antenna in package.","PeriodicalId":143802,"journal":{"name":"2021 IEEE MTT-S International Microwave Workshop Series on Advanced Materials and Processes for RF and THz Applications (IMWS-AMP)","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128978078","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}
Hengyan Hu, Yang Yang, Xiaoxiang He, Yan Chen, Fukang Li, Yan Deng, Lei Yang
{"title":"Design of Metamaterial Absorber for Large Angle Oblique Incidence with Impedance Matching","authors":"Hengyan Hu, Yang Yang, Xiaoxiang He, Yan Chen, Fukang Li, Yan Deng, Lei Yang","doi":"10.1109/IMWS-AMP53428.2021.9643892","DOIUrl":"https://doi.org/10.1109/IMWS-AMP53428.2021.9643892","url":null,"abstract":"In this paper, to realize stable absorption under large angle oblique incidence, a metamaterial absorber (MA) with air cavity embedded with lumped resistors is proposed by optimizing its input impedance to match the oblique incident interface wave impedance at transverse electric (TE) polarization mode. According to the vector transmission line equations, the characteristic impedance of transmission line for oblique incidence can be derived. As a result, the absorption band over 90% at the angle from 60° to 70° is improved to 7.9 - 12.3GHz since the impedance is well matched through adjusting the absorber's plane structure.","PeriodicalId":143802,"journal":{"name":"2021 IEEE MTT-S International Microwave Workshop Series on Advanced Materials and Processes for RF and THz Applications (IMWS-AMP)","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129181849","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}
Zefang Yu, Yongle Wu, Weimin Wang, Yuhao Yang, Yuan’an Liu
{"title":"A Millimeter-Wave Dual-Band Wideband Metasurface Antenna Based on Printed Ridge Gap Waveguide Feeding","authors":"Zefang Yu, Yongle Wu, Weimin Wang, Yuhao Yang, Yuan’an Liu","doi":"10.1109/IMWS-AMP53428.2021.9643981","DOIUrl":"https://doi.org/10.1109/IMWS-AMP53428.2021.9643981","url":null,"abstract":"In this paper, a millimeter-wave dual-band metasurface antenna is proposed with high gain and wide bandwidth. The proposed antenna is composed of a printed ridge gap waveguide, two T-shaped slots, and the metasurface. All target modes of the metasurface are excited by two T-shaped slots. The metasurface loaded on the slots enhances the radiation performance and improves the gain. An example of the proposed antenna is designed and simulated with the −10-dB bandwidths of 11.3% (26.73–29.83GHz) and 11.3% (38.03–42.6 GHz), and the maximum gains of 9.85 dBi and 10.33 dBi.","PeriodicalId":143802,"journal":{"name":"2021 IEEE MTT-S International Microwave Workshop Series on Advanced Materials and Processes for RF and THz Applications (IMWS-AMP)","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130373486","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}
Song Zhang, Hao Xue, Mingyang Chang, Xiaonan Wu, Fangjie Cheng, Long Li
{"title":"Generation of Airy Beams Using an Amplitude-Phase-Modulated Metasurface","authors":"Song Zhang, Hao Xue, Mingyang Chang, Xiaonan Wu, Fangjie Cheng, Long Li","doi":"10.1109/IMWS-AMP53428.2021.9643966","DOIUrl":"https://doi.org/10.1109/IMWS-AMP53428.2021.9643966","url":null,"abstract":"Airy beams have attracted the attention of many researchers because of its characteristics of non-diffraction, self-bending and self-repairing. However, most studies on Airy beams are only in the optical frequency, and the devices that generate Airy beams (such as spatial light modulator, etc.) are complicated. Therefore, in this paper, a novel method for the generation of Airy beam is proposed in the microwave field by using a simple metasurface with high transmittance.","PeriodicalId":143802,"journal":{"name":"2021 IEEE MTT-S International Microwave Workshop Series on Advanced Materials and Processes for RF and THz Applications (IMWS-AMP)","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115816097","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 Dual-Polarized Crossed Dipole with Broadband and Broad Beam width","authors":"Chuo Yang, Longwei He, Guodong Liu, Yu-dong Zhao, Fengjun Zhao, Yu-xiang Zhang","doi":"10.1109/IMWS-AMP53428.2021.9644013","DOIUrl":"https://doi.org/10.1109/IMWS-AMP53428.2021.9644013","url":null,"abstract":"In this paper, a dual-polarized crossed dipole with broadband and broad beam width is proposed. The crossed dipole fed by microstrip baluns consists of two printed dipoles which are placed vertically across the metal pedestal. With this configuration, the simulated and measured impedance bandwidth of the proposed antenna covers 8 GHz to 12 GHz ($text{VSWR} leqslant 3.0$). By setting the phase difference between the two ports to 90°, left circularly polarized pattern and right circularly polarized pattern can be obtained. Within the bandwidth, the proposed antenna has wide beam width ($geqslant 130^{circ}$) in H-plane. Measured results and simulated results are also obtained and discussed at the end of this paper.","PeriodicalId":143802,"journal":{"name":"2021 IEEE MTT-S International Microwave Workshop Series on Advanced Materials and Processes for RF and THz Applications (IMWS-AMP)","volume":"120 11","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"113935086","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":"Waveguide Coupler in Designer Surface Plasmon using Topological edge states","authors":"Bo Li, Hongyu Shi, Juan Chen, A. Zhang, Zhuo Xu","doi":"10.1109/IMWS-AMP53428.2021.9643865","DOIUrl":"https://doi.org/10.1109/IMWS-AMP53428.2021.9643865","url":null,"abstract":"Photonic topological insulators has shown its ability to be immune to backscatter and defects in the two-dimensional waveguide structure. However, functional devices for PTIs applications are still lacking. In this work, we propose waveguide coupler that consists of two topological waveguides in designer surface plasmon working in the millimeter wave band. We can change the feed direction to adjust the coupling direction and the coupling strength can be adjusted by the distance between the two topological waveguides. At the same time, the proposed topological waveguide coupler using NaCl substrate is environmentally protection.","PeriodicalId":143802,"journal":{"name":"2021 IEEE MTT-S International Microwave Workshop Series on Advanced Materials and Processes for RF and THz Applications (IMWS-AMP)","volume":"38 4","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114028564","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}
Felix Sepaintner, M. Schmalzbauer, Johannes Jakob, Andreas Scharl, G. Weber, Franz Xaver Roehrl, W. Bogner, S. Zorn
{"title":"Comparison of an Inkjet Fabrication Method on Low-Cost PCB Substrates With Semi Additive And Subtractive Technologies Regarding RF-Performance","authors":"Felix Sepaintner, M. Schmalzbauer, Johannes Jakob, Andreas Scharl, G. Weber, Franz Xaver Roehrl, W. Bogner, S. Zorn","doi":"10.1109/IMWS-AMP53428.2021.9643887","DOIUrl":"https://doi.org/10.1109/IMWS-AMP53428.2021.9643887","url":null,"abstract":"In this paper, an additive manufacturing method based on inkjet printing is presented which allows the production of passive RF-structures on low-cost PCB substrates for industrial applications up to 100 GHz. Due to the relative high surface roughness of the underlying PCB substrates, compared to glass or ceramics, overprinting of several layers often leads to poor results because of concomitant unwanted bulging effects. As a result, suitable plasma processes must be applied, to guarantee small line and space dimensions down to $25 mu mathrm{m}$. To increase the conductivity, to close possible micro cracks and to lower insertion loss in the two-digit GHz range the printed line segments are additionally plated with an electroless copper layer. By using these fabrication method, excellent design rules can be achieved over complete PCB panels. This allows the cost-effective realization of compact, passive RF-filters which have comparable manufacturing- and RF-performances to filters produced with competitive subtractive or semi additive processes (SAP).","PeriodicalId":143802,"journal":{"name":"2021 IEEE MTT-S International Microwave Workshop Series on Advanced Materials and Processes for RF and THz Applications (IMWS-AMP)","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114744377","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}