2016 IEEE 9th UK-Europe-China Workshop on Millimetre Waves and Terahertz Technologies (UCMMT)最新文献

Evaluation of a VNA-based material characterization kit at frequencies from 0.75 THz to 1.1 THz 基于vna的材料表征试剂盒在0.75太赫兹到1.1太赫兹频率范围内的评估

2016 IEEE 9th UK-Europe-China Workshop on Millimetre Waves and Terahertz Technologies (UCMMT) Pub Date : 2016-09-05 DOI: 10.1109/UCMMT.2016.7873952

A. Khalid, D. Cumming, R. Clarke, Chong Li, N. Ridler

{"title":"Evaluation of a VNA-based material characterization kit at frequencies from 0.75 THz to 1.1 THz","authors":"A. Khalid, D. Cumming, R. Clarke, Chong Li, N. Ridler","doi":"10.1109/UCMMT.2016.7873952","DOIUrl":"https://doi.org/10.1109/UCMMT.2016.7873952","url":null,"abstract":"This paper describes an initial assessment of a commercially available THz material characterization kit (MCK). The assessment is based on the measurement of several material samples. The MCK comprises two conical waveguide horn transitions and two sections of low-loss corrugated waveguide. A gap between the two corrugated waveguides allows the material samples to be inserted into the system during measurement. The MCK is attached to a THz Vector Network Analyzer (VNA), which measures S-parameters, in the frequency domain, of a material under test (MUT). A computer-based algorithm employing an iterative calculation derives values for material parameters (e.g. permittivity) from the measured S-parameters of the MUT. A MCK has been evaluated over the frequency range 0.75 THz to 1.1 THz, to assess the plausibility of results that can be obtained using such a technique. Two VNAs utilizing frequency extender heads were used for the investigation, with measurements being made with reference to a range of different calibration techniques and different calibration standards. Whilst some of the results obtained look reasonable, a significant proportion of the results were either difficult to interpret or showed inexplicable (i.e. non-physical) behavior. This indicates that much work is still needed before this technique can be used routinely for the measurement of material parameters at these very high frequencies.","PeriodicalId":380332,"journal":{"name":"2016 IEEE 9th UK-Europe-China Workshop on Millimetre Waves and Terahertz Technologies (UCMMT)","volume":"52 56 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124621150","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}

引用次数: 11

A W-band corrugated horn incorporated with a vacuum window 带真空窗的w波段波纹喇叭

2016 IEEE 9th UK-Europe-China Workshop on Millimetre Waves and Terahertz Technologies (UCMMT) Pub Date : 2016-09-01 DOI: 10.1109/UCMMT.2016.7874012

P. Mcelhinney, C. Donaldson, L. Zhang, W. He

引用次数: 0

Spoof-surface-plasmons-assisted enhanced terahertz vacuum electronic source 欺骗表面等离子体辅助增强型太赫兹真空电子源

2016 IEEE 9th UK-Europe-China Workshop on Millimetre Waves and Terahertz Technologies (UCMMT) Pub Date : 2016-09-01 DOI: 10.1109/UCMMT.2016.7873942

Yong-Qiang Liu, C. Du, Pu‐Kun Liu

{"title":"Spoof-surface-plasmons-assisted enhanced terahertz vacuum electronic source","authors":"Yong-Qiang Liu, C. Du, Pu‐Kun Liu","doi":"10.1109/UCMMT.2016.7873942","DOIUrl":"https://doi.org/10.1109/UCMMT.2016.7873942","url":null,"abstract":"Spoof surface plasmons (SSP) is the localized collective electron oscillation mode which is propagating along the corrugated metal surface. The extreme strong near field of SSP mode is very attractive to develop novel terahertz (THz) electronic source. In this paper, SSP-assisted enhanced Terahertz vacuum electronic sources on the metallic grating have been studied with the help of particle-in-cell (PIC) simulation at the frequency near 1THz. Besides, in order to improve the output power of this kind of THz electronic source, three different gradient metasurfaces on the metallic grating are proposed and investigated. One method is to increase the lattice periodicity with a constant grating filling-factor, the second is decreasing lattice periodicity but with a constant groove width and the third one is increasing the lattice periodicity with groove width unchanged. For each case, different variation ratio is optimized by PIC simulation and there is a different variation ratio where the output power can be increased compared with the conventional structure by the same electron beam and other optimized conditions. PIC simulation results show that the maximum output power can be increased by 10% compared with the traditional metallic grating. Our studies about the excitation of SSP on the gradient metallic grating are helpful to develop this kind of THz vacuum electronic source.","PeriodicalId":380332,"journal":{"name":"2016 IEEE 9th UK-Europe-China Workshop on Millimetre Waves and Terahertz Technologies (UCMMT)","volume":"121 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122438370","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}

引用次数: 0

Compact sub-terahertz radiation sources driven by pseudospark-produced electron beams 由伪火花产生的电子束驱动的紧凑亚太赫兹辐射源

2016 IEEE 9th UK-Europe-China Workshop on Millimetre Waves and Terahertz Technologies (UCMMT) Pub Date : 2016-09-01 DOI: 10.1109/UCMMT.2016.7873964

A. Cross, W. He, L. Zhang, H. Yin, D. Bowes, K. Ronald, A. Phelps, D. Li, X. Chen, Y. Yin, G. Shu, G. Liu, J. Zhao

引用次数: 0

Study on a THz beam-scanning system with offset Dragonian dual-reflector antenna 偏置龙双反射面天线太赫兹波束扫描系统的研究

2016 IEEE 9th UK-Europe-China Workshop on Millimetre Waves and Terahertz Technologies (UCMMT) Pub Date : 2016-09-01 DOI: 10.1109/UCMMT.2016.7873965

Min Zhou, Y. Alfadhl, Xiao-dong Chen

引用次数: 0

A comparison of spectroscopy standards and optical constant retrieval techniques in FTS and TDS measurements FTS和TDS测量中光谱标准和光学常数反演技术的比较

2016 IEEE 9th UK-Europe-China Workshop on Millimetre Waves and Terahertz Technologies (UCMMT) Pub Date : 2016-09-01 DOI: 10.1109/UCMMT.2016.7874021

G. Savini, N. Baccichet, P. Ade, P. Moseley, Guozhong Zhao, Y. Yu

引用次数: 1

The recent progress of THz radiation sources in An Hui Huadong photoelectric technology institute 安徽华东光电技术研究所太赫兹辐射源研究进展

2016 IEEE 9th UK-Europe-China Workshop on Millimetre Waves and Terahertz Technologies (UCMMT) Pub Date : 2016-09-01 DOI: 10.1109/UCMMT.2016.7873963

Luwei Liu, H. Xi, Jiancheng Zhang, Gang Zhu, Zhaochang He

引用次数: 1

A E-band E-plane type waveguide bandpass filter 一种e波段e平面型波导带通滤波器

2016 IEEE 9th UK-Europe-China Workshop on Millimetre Waves and Terahertz Technologies (UCMMT) Pub Date : 2016-09-01 DOI: 10.1109/UCMMT.2016.7874004

Deng Fang, Bo Zhang, Jie He

引用次数: 3

Ka-band microstrip array based on mutual coupling 基于互耦合的ka波段微带阵列

2016 IEEE 9th UK-Europe-China Workshop on Millimetre Waves and Terahertz Technologies (UCMMT) Pub Date : 2016-09-01 DOI: 10.1109/UCMMT.2016.7874028

R. Yao, Bo Zhang, Yong Fan, S. Qu, Yuan Song

引用次数: 0

Optimisation of millimetre wave amplifiers for satellite based radiometer 卫星辐射计毫米波放大器的优化设计

2016 IEEE 9th UK-Europe-China Workshop on Millimetre Waves and Terahertz Technologies (UCMMT) Pub Date : 2016-09-01 DOI: 10.1109/UCMMT.2016.7873969

D. Klugmann, K. Parow-Souchon, David Smith, B. Davis, B. Ellison, B. Alderman

引用次数: 0