发布求助
文献互助 智能选刊 最新文献

1981 International Conference on Submillimeter Waves and Their Applications最新文献

筛选
英文 中文
Heterodyne Spectroscopy with Tunable Laser Sidebands 具有可调谐激光边带的外差光谱
1981 International Conference on Submillimeter Waves and Their Applications Pub Date : 1981-12-01 DOI: 10.1109/ICSWA.1981.9335174
G. Magerl, W. Schupita, H. Kaeufl, H. Rothermel
{"title":"Heterodyne Spectroscopy with Tunable Laser Sidebands","authors":"G. Magerl, W. Schupita, H. Kaeufl, H. Rothermel","doi":"10.1109/ICSWA.1981.9335174","DOIUrl":"https://doi.org/10.1109/ICSWA.1981.9335174","url":null,"abstract":"Tunable laser sidebands were successfully employed for the first time as a local oscillator in infrared heterodyne spectroscopy. By careful design of a resonant electrooptic modulator, sideband power in excess of 5 mW has been generated from 4W of CO2 laser power at a microwave drive power level of 10 W.","PeriodicalId":254777,"journal":{"name":"1981 International Conference on Submillimeter Waves and Their Applications","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1981-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129051979","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
The NonLinear Theory of the Free Electron Laser 自由电子激光的非线性理论
1981 International Conference on Submillimeter Waves and Their Applications Pub Date : 1981-12-01 DOI: 10.1109/ICSWA.1981.9335206
Cha-Mei Tang, P. Sprangle
{"title":"The NonLinear Theory of the Free Electron Laser","authors":"Cha-Mei Tang, P. Sprangle","doi":"10.1109/ICSWA.1981.9335206","DOIUrl":"https://doi.org/10.1109/ICSWA.1981.9335206","url":null,"abstract":"The free electron laser (FEL) is a new radiation source characterized by frequency tunability, high power levels, high efficiencies and output wavelengths ranging from the millimeter to beyond the optical regime. The schematic of the FEL configuration consists of a stream of relativistic electrons propagating through a spatially periodic wiggler field as depicted in Fig. 1. Under appropriate conditions, an electromagnetic wave double doppler upshifted in frequency can be amplified.","PeriodicalId":254777,"journal":{"name":"1981 International Conference on Submillimeter Waves and Their Applications","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1981-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126035575","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
Quasi-Optical Ring Resonator Diplexf.rs: Theory and Experiment 准光环形谐振器双工。rs:理论与实验
1981 International Conference on Submillimeter Waves and Their Applications Pub Date : 1981-12-01 DOI: 10.1109/ICSWA.1981.9335171
A. Chiou, H. Pickett
{"title":"Quasi-Optical Ring Resonator Diplexf.rs: Theory and Experiment","authors":"A. Chiou, H. Pickett","doi":"10.1109/ICSWA.1981.9335171","DOIUrl":"https://doi.org/10.1109/ICSWA.1981.9335171","url":null,"abstract":"Performance of quasi-optical ring resonator diplexers with plane parallel plate resonator, cylindrical resonator and toroidal resonator mirrors are investigated both theoretically and experimentally. Experimental models have been constructed and tested at 100 GHz. Our results indicate that for diffraction limited cases significant improvement in performance of diplexer may be achieved by utilizing a toroidal reflector properly designed to phase-match the input Gaussian beam from local oscillator.","PeriodicalId":254777,"journal":{"name":"1981 International Conference on Submillimeter Waves and Their Applications","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1981-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116254586","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: 1
Compact Cyclotron Resonance Maser 紧凑型回旋共振脉泽器
1981 International Conference on Submillimeter Waves and Their Applications Pub Date : 1981-12-01 DOI: 10.1109/ICSWA.1981.9335152
A. Kupiszewski, N. Luhmann, H. Jory
{"title":"Compact Cyclotron Resonance Maser","authors":"A. Kupiszewski, N. Luhmann, H. Jory","doi":"10.1109/ICSWA.1981.9335152","DOIUrl":"https://doi.org/10.1109/ICSWA.1981.9335152","url":null,"abstract":"There is presently considerable interest in the development of rf sources in the millimeter and submillimeter wave frequency region. The proposed application areas include military radar and communications systems, radio astronomy, atmospheric radiometry, nondestructive dielectric testing, detection systems for concealed weapons, fusion plasma heating, and plasma diagnostics. Specific proposed military applications include high resolution radar for target identification, phased array radar configurations, electronic counter-measures and possible covert communications. Reasonable power is necessary because the attenuation at high frequencies is an important factor that limits the range at which objects can be imaged. Airborne applications in addition require that the source be extremely compact (i.e. small size and light weight). These two somewhat contradictory requirements place extreme burdens on the source design. For example, the high voltage or high magnetic fields associated with conventional microwave tubes operating at such high frequencies are not satisfactory. The purpose of the present work is therefore to develop a compact, relatively high power (> 100 W) rf source in the 90-1000 GHz region which does not suffer from these limitations.","PeriodicalId":254777,"journal":{"name":"1981 International Conference on Submillimeter Waves and Their Applications","volume":"386 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1981-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122841489","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
Conversion Efficiency and Noise Measurements of SIS Array Mixers SIS阵列混频器的转换效率和噪声测量
1981 International Conference on Submillimeter Waves and Their Applications Pub Date : 1981-12-01 DOI: 10.1109/ICSWA.1981.9335104
H. van Kempen, W. R. McGrath, P. Richards, A. D. Smith, R. E. Harris, F. Lloyd
{"title":"Conversion Efficiency and Noise Measurements of SIS Array Mixers","authors":"H. van Kempen, W. R. McGrath, P. Richards, A. D. Smith, R. E. Harris, F. Lloyd","doi":"10.1109/ICSWA.1981.9335104","DOIUrl":"https://doi.org/10.1109/ICSWA.1981.9335104","url":null,"abstract":"Quasiparticle heterodyne mixers which use series arrays [1] of Pb-alloy SIS tunnel junctions have been tested at 36 GHz. These arrays each showed a conversion loss of approximately 5dB. Single-sideband noise temperatures of 9.8 ± 5K, 34 ± 12 K, and 85 ± 25 K were measured for 1, 10 and 50 junction arrays respectively. Significantly increased saturation levels were observed for the 10 and 50 junction arrays.","PeriodicalId":254777,"journal":{"name":"1981 International Conference on Submillimeter Waves and Their Applications","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1981-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133300507","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
Cyclotron Maser Instability as a Resonant Limit of a Space Charge Wave 回旋脉泽不稳定性作为空间电荷波的共振极限
1981 International Conference on Submillimeter Waves and Their Applications Pub Date : 1981-12-01 DOI: 10.1109/ICSWA.1981.9335149
Y. Lau, M. Baird, L. Barnett, K. Chu, V. Granatstein
{"title":"Cyclotron Maser Instability as a Resonant Limit of a Space Charge Wave","authors":"Y. Lau, M. Baird, L. Barnett, K. Chu, V. Granatstein","doi":"10.1109/ICSWA.1981.9335149","DOIUrl":"https://doi.org/10.1109/ICSWA.1981.9335149","url":null,"abstract":"In place of a treatment in phase space, we present in this paper a macroscopic, fluid-like, description of cyclotron maser instabilities in a simple geometrical configuration. The approach follows that commonly used in conventional microwave devices. The usual dispersion relationship for cyclotron maser instability is recovered by considering the synchronous interaction between the space charges on the relativistic beam with the surrounding electromagnetic structure. The charge bunching processes are described. This analysis is also valid for nonsynchronous interactions.","PeriodicalId":254777,"journal":{"name":"1981 International Conference on Submillimeter Waves and Their Applications","volume":"59 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1981-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134519981","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
Planar Antenna-Coupled SIS Devices for Detection and Mixing 用于检测和混频的平面天线耦合SIS装置
1981 International Conference on Submillimeter Waves and Their Applications Pub Date : 1981-12-01 DOI: 10.1109/ICSWA.1981.9335103
K. Irwin, S. Schwarz, T. Van Duzer
{"title":"Planar Antenna-Coupled SIS Devices for Detection and Mixing","authors":"K. Irwin, S. Schwarz, T. Van Duzer","doi":"10.1109/ICSWA.1981.9335103","DOIUrl":"https://doi.org/10.1109/ICSWA.1981.9335103","url":null,"abstract":"In order to avoid the difficulties associated with waveguide and cat-whisker contacts at frequencies above 100GHz, a planar integrated circuit combining lead-alloy SIS junctions and a receiving antenna has been developed. A novel tuning device for the planar circuit will also be described.","PeriodicalId":254777,"journal":{"name":"1981 International Conference on Submillimeter Waves and Their Applications","volume":"178 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1981-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122418538","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: 2
A Coherent 225 GHz Receiver 相干225 GHz接收机
1981 International Conference on Submillimeter Waves and Their Applications Pub Date : 1981-12-01 DOI: 10.1109/ICSWA.1981.9335163
R. E. Forsythe
{"title":"A Coherent 225 GHz Receiver","authors":"R. E. Forsythe","doi":"10.1109/ICSWA.1981.9335163","DOIUrl":"https://doi.org/10.1109/ICSWA.1981.9335163","url":null,"abstract":"A receiver for use at 225 GHz has been designed and built. It uses a low noise, subharmonically pumped, balanced mixer that requires a local oscillator (LO) at only one fourth the signal frequency. The local oscillator is a commercially available 56 GHz phase locked Gunn oscillator with a 50 mW power output. Preliminary results indicate a 12 dB system noise figure (DSB).","PeriodicalId":254777,"journal":{"name":"1981 International Conference on Submillimeter Waves and Their Applications","volume":"552 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1981-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127670633","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: 1
A Quasi-Optical Scanning Multiport (Quosm) Network Analyzer 准光扫描多端口网络分析仪
1981 International Conference on Submillimeter Waves and Their Applications Pub Date : 1981-12-01 DOI: 10.1109/ICSWA.1981.9335202
R. Bohlander, A. Mcsweeney, J. Newton, V. Brady, R. G. Shackelford
{"title":"A Quasi-Optical Scanning Multiport (Quosm) Network Analyzer","authors":"R. Bohlander, A. Mcsweeney, J. Newton, V. Brady, R. G. Shackelford","doi":"10.1109/ICSWA.1981.9335202","DOIUrl":"https://doi.org/10.1109/ICSWA.1981.9335202","url":null,"abstract":"Heretofore, guided-wave six-port circuits have been used for network analysis at millimeter wavelengths. A development of an alternative quasi-optical circuit will be described which will provide greater facility at short millimeter to submillimeter wavelengths. It employs an analogue of a Michelon interferometer and near Gaussian-mode propagation.","PeriodicalId":254777,"journal":{"name":"1981 International Conference on Submillimeter Waves and Their Applications","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1981-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121216044","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
Investigation of Narrow Band-Gap Semiconductors for Tunnetts 隧道用窄带隙半导体的研究
1981 International Conference on Submillimeter Waves and Their Applications Pub Date : 1981-12-01 DOI: 10.1109/ICSWA.1981.9335114
D. Pan, N. Lee
{"title":"Investigation of Narrow Band-Gap Semiconductors for Tunnetts","authors":"D. Pan, N. Lee","doi":"10.1109/ICSWA.1981.9335114","DOIUrl":"https://doi.org/10.1109/ICSWA.1981.9335114","url":null,"abstract":"The potential of abrupt junction TUNNETT diodes made from narrow band gap semiconductor for millimeter wave frequency are explored theoretically. The alloy compound Hg1-xCdxTe which has a tunable band gap is chosen in this study. Neglecting impact ionization, an efficiency of 2.5% is obtained at 94 GHz in the simulation with a band-gap of 0.41 eV. We suggest that narrow band gap semiconductors have good potential for fabricating diodes operating in the TUNNETT or MITATT modes for millimeter wave applications.","PeriodicalId":254777,"journal":{"name":"1981 International Conference on Submillimeter Waves and Their Applications","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1981-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116013544","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
下一页 尾页
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整，为了账户安全，请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们：info@booksci.cn Book学术提供免费学术资源搜索服务，方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号：481959085
Book学术官方微信