Jie Xie, Y. Alfadhl, J. Zhang, A. Cross, H. Yin, L. Zhang, K. Ronald, A. Phelps, W. He, G. Shu, J. Zhao, X. Chen
{"title":"Effects of Tolerance Fabrication of Extended Interaction Oscillator Based on Pseudospark-sourced Sheet Electron Beam at 0.35 THz","authors":"Jie Xie, Y. Alfadhl, J. Zhang, A. Cross, H. Yin, L. Zhang, K. Ronald, A. Phelps, W. He, G. Shu, J. Zhao, X. Chen","doi":"10.1109/UCMMT47867.2019.9008343","DOIUrl":"https://doi.org/10.1109/UCMMT47867.2019.9008343","url":null,"abstract":"A practical numerical approach to the analysis of the effects of tolerances fabrication on the performance of a planar 0.35 THz extended interaction oscillator (EIO) is presented. The planar EIO is to be driven by pseudospark-sourced sheet electron beam. The influence of tolerance on the $Q$-value, resonance frequency, characteristic impedance is demonstrated using an effective value of conductivity of 1.1 × 107 S/m to take into account the skin depth and surface roughness. The method of Wire Electrical Discharge Machining (WEDM) is proposed to manufacture the 0.35 THz EIO because of its precision and moderate cost compared with other manufacturing methods such as high speed micro machining, Deep Reactive Ion Etching (DRIE) or Ultra Violet Lithographie, Galvanik, and Abformung (UV LIGA).","PeriodicalId":423474,"journal":{"name":"2019 12th UK-Europe-China Workshop on Millimeter Waves and Terahertz Technologies (UCMMT)","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122471690","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 New Concept for Multi-Beam Phased Array","authors":"B. Tan, J. Garrett, G. Yassin","doi":"10.1109/UCMMT47867.2019.9008256","DOIUrl":"https://doi.org/10.1109/UCMMT47867.2019.9008256","url":null,"abstract":"We present a new concept for constructing a compact linear 1 × $n$ multi-beam phased array transceiver system that can be scaled to operate from radio to millimetre wavelength. In this design, all the components required to form the phased array are fabricated on a single printed circuit board, where both the input antenna array and the readout arrays are integrated on the same platform. This is made possible by using a novel planar power splitter/combiners technology, which allows the input signal from each antenna to be split simultaneously through these components arranged in horizontal, and re-combined vertically to form individual beam. This compact single-platform phased array system could be important for many applications that required compact and light-weight design such as 4G/5G wireless telecommunications, inter-satellite (CubeSat) or satellite-base station communication links, space-based remote sensing, vehicle transceiver system and astronomical receivers.","PeriodicalId":423474,"journal":{"name":"2019 12th UK-Europe-China Workshop on Millimeter Waves and Terahertz Technologies (UCMMT)","volume":"24 9-10","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120983796","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}
Yiwei Wang, Zhen Zhou, Yi Hu, Yizheng He, Bo Zhang, Xiaoming Chen, Xingyu Chen, A. Lixin, Jicong Zhang, Yong Fan
{"title":"Design of a 110GHz GaN Schottky Diode Frequency Tripler","authors":"Yiwei Wang, Zhen Zhou, Yi Hu, Yizheng He, Bo Zhang, Xiaoming Chen, Xingyu Chen, A. Lixin, Jicong Zhang, Yong Fan","doi":"10.1109/UCMMT47867.2019.9008344","DOIUrl":"https://doi.org/10.1109/UCMMT47867.2019.9008344","url":null,"abstract":"In this paper, a 110GHz GaN Schottky diode frequency tripler is presented. The GaN Schottky diodes and the whole circuit are on Rogers/RT5880 and the thickness is 0.127m. The circuit design, simulation and optimization of the frequency tripler are carried out by using HFSS and ADS. The simulation result shows the efficiency of the tripler can achieve at least 7% in 110GHz and the outpower can achieve 100mW.","PeriodicalId":423474,"journal":{"name":"2019 12th UK-Europe-China Workshop on Millimeter Waves and Terahertz Technologies (UCMMT)","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125225116","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":"Variable aperture horn antenna for millimeter wave wireless communications","authors":"E. Lewis, L. R. Billa, R. Letizia, C. Paoloni","doi":"10.1109/UCMMT47867.2019.9008360","DOIUrl":"https://doi.org/10.1109/UCMMT47867.2019.9008360","url":null,"abstract":"A variable aperture horn antenna, for flexible coverage area in point to multipoint at millimeter wave, is proposed. The antenna is intended to be implement in future 5G high capacity wireless backhaul networks to respond to traffic variations and coverage needs. Design and test results of the variable aperture antenna at scaled 35 − 40 GHz frequency band are reported.","PeriodicalId":423474,"journal":{"name":"2019 12th UK-Europe-China Workshop on Millimeter Waves and Terahertz Technologies (UCMMT)","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125417414","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}
Juan M. Socuéllamos, R. Letizia, R. Dionisio, C. Paoloni
{"title":"Large Signal Analysis of a New Meander Line Topology for W-band Traveling Wave Tubes","authors":"Juan M. Socuéllamos, R. Letizia, R. Dionisio, C. Paoloni","doi":"10.1109/UCMMT47867.2019.9008324","DOIUrl":"https://doi.org/10.1109/UCMMT47867.2019.9008324","url":null,"abstract":"Satellite distribution of high data rate needs wide frequency band. The millimeter waves, in particular the W-band, provide wide bandwidth and relatively low attenuation. The link transmission power can be provided only by Traveling Wave Tubes (TWTs). A new meander line topology to be used as slow wave structure for 71–76 GHz TWTs, with improved performance in comparison to the conventional one, is proposed. The new meander line compared to a standard meander line shows flatter gain and higher output power.","PeriodicalId":423474,"journal":{"name":"2019 12th UK-Europe-China Workshop on Millimeter Waves and Terahertz Technologies (UCMMT)","volume":"114 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133730012","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}
Juan-Feng Zhu, C. Du, Lu-Yao Bao, Fan‐Hong Li, Shi Pan, Z. Gao, Pu‐Kun Liu, A. Cross
{"title":"Generating Coherent Terahertz Radiation via Brillouin Zone Overlapping","authors":"Juan-Feng Zhu, C. Du, Lu-Yao Bao, Fan‐Hong Li, Shi Pan, Z. Gao, Pu‐Kun Liu, A. Cross","doi":"10.1109/UCMMT47867.2019.9008336","DOIUrl":"https://doi.org/10.1109/UCMMT47867.2019.9008336","url":null,"abstract":"A method to generate coherent terahertz (THz) radiation into free space via Brillouin zone overlapping is introduced in this paper. When the free electron bunch passes over the metallic grating, the spoof surface plasmon (SSP) is stimulated and confined in the surface. By loading a rod array above the grating, the Brillouin zones of the rod array and grating overlap. In this way, part of the dispersion curves of the SSP wave lies in the radiative region, achieving the transformation from SSP to radiation wave into the free space. Moreover, the field intensity of the coherent THz radiation shows an enhancement about 20 times compared with that of ordinary Smith-Purcell radiation (SPR) generated from the rod array. This method is promising for developing compact and efficient THz radiation source.","PeriodicalId":423474,"journal":{"name":"2019 12th UK-Europe-China Workshop on Millimeter Waves and Terahertz Technologies (UCMMT)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116777891","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}
G. Su, Dirong Chen, Kaixuan Pang, Hai-jun Gao, Jiangtao Su, Lingling Sun
{"title":"A 128.76-129.56 GHz Fundamental Voltage Control Oscillator in 65 nm CMOS","authors":"G. Su, Dirong Chen, Kaixuan Pang, Hai-jun Gao, Jiangtao Su, Lingling Sun","doi":"10.1109/ucmmt47867.2019.9008284","DOIUrl":"https://doi.org/10.1109/ucmmt47867.2019.9008284","url":null,"abstract":"A 128.76GHz-129.56GHz fundamental voltage control oscillator (VCO) is presented in this paper. An improved transformer-coupled resonant tank that consists a transformer-based switch inductor and a differential varactor using the common-cathode structure is used to achieve the high quality factor of the differential varactor and improve the tuning range of this VCO. This VCO is fabricated on 65 nm CMOS process. It consumes 11.2 mW from a 1.4 V supply. The measurement results show that the tuning range is 0.8 GHz and the output power ranges from −11.8 dBm to −10.6 dBm.","PeriodicalId":423474,"journal":{"name":"2019 12th UK-Europe-China Workshop on Millimeter Waves and Terahertz Technologies (UCMMT)","volume":"77 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134444201","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}
Jian Xin Zhang, Yichun Fan, H. Sun, Y. Sun, Xin Fan, Hourong Li
{"title":"All dielectric metamaterial frequency selective surface based on Y shaped barium strontium titanate ceramic resonator","authors":"Jian Xin Zhang, Yichun Fan, H. Sun, Y. Sun, Xin Fan, Hourong Li","doi":"10.1109/UCMMT47867.2019.9008273","DOIUrl":"https://doi.org/10.1109/UCMMT47867.2019.9008273","url":null,"abstract":"In this paper, all dielectric metamaterial frequency selective surface based on Y shaped barium strontium titanate ceramic resonator is proposed. The simulation results show the bandwidth of the frequency selective surface can reach 2GHz, and the angle stability of the TE and TM mode is well. By introducing a Y shaped cavity into the ceramic resonator, the transmission characteristic curve of the frequency selective surface achieves two stop bands with bandwidths of 4.56GHz and 0.68GHz respectively and a pass band with a bandwidth of 0.28GHz. When the incident angle changes to 75°, a pass band with a bandwidth of 1.8GHz will appear for the TM mode. These results demonstrate that the proposed structure is an excellent candidate of all dielectric metamaterial and broadband frequency selective surface for high power microwaves.","PeriodicalId":423474,"journal":{"name":"2019 12th UK-Europe-China Workshop on Millimeter Waves and Terahertz Technologies (UCMMT)","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133383144","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":"High Resolution ISAR Imaging of Targets with Complex Motions in the terahertz region","authors":"Qi Yang, Hongqiang Wang, B. Deng, Yuliang Qin","doi":"10.1109/UCMMT47867.2019.9008331","DOIUrl":"https://doi.org/10.1109/UCMMT47867.2019.9008331","url":null,"abstract":"High-resolution imaging has always been one of the hotspots in the field of radar research. It has a wide range of military and civilian applications, such as battlefield reconnaissance, non-destructive testing and security inspection. With the rapid development of millimeter wave and terahertz in recent years, the research progress of high resolution imaging based on millimeter wave and terahertz radar is remarkable, which provides a new possibility for fine target recognition. Based on terahertz radar, high resolution imaging experiments of complex moving targets are carried out in this paper. The special requirement of high resolution in terahertz band is pointed out through experimental data processing. The great potential of terahertz radar in high resolution application scenarios in the future is also described.","PeriodicalId":423474,"journal":{"name":"2019 12th UK-Europe-China Workshop on Millimeter Waves and Terahertz Technologies (UCMMT)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128923827","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}
Quan Wang, Wen-Man Zou, M. Jin, Xue Cheng Zhang, Li Chen
{"title":"A Low-Cost Thin Active Phased Array for 5G Applications","authors":"Quan Wang, Wen-Man Zou, M. Jin, Xue Cheng Zhang, Li Chen","doi":"10.1109/ucmmt47867.2019.9008326","DOIUrl":"https://doi.org/10.1109/ucmmt47867.2019.9008326","url":null,"abstract":"A 256-element planar phased array is designed and measured, operating between 24.25 GHz and 27.5 GHz. The low-cost array architecture is based on a quad-channel beamforming Radio Frequency Integrated Circuit (RFIC) and multilayer stacked PCB technology. Measured results achieved show that the proposed phased array antenna is efficient in achieving good radiation characteristics with a simple structure. The antenna has a gain of 27.2 dB, 3-dB beam-width of 5.2° and SLLs of −12 dB with uniform-distribution at Ka band.","PeriodicalId":423474,"journal":{"name":"2019 12th UK-Europe-China Workshop on Millimeter Waves and Terahertz Technologies (UCMMT)","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115332130","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}