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1987 Twelth International Conference on Infrared and Millimeter Waves最新文献

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The status of millimeter wave hybrid integrated-circuit balanced mixers 毫米波混合集成电路平衡混频器的现状
1987 Twelth International Conference on Infrared and Millimeter Waves Pub Date : 1987-12-01 DOI: 10.1109/irmm.1987.9127013
C. Nguyen
{"title":"The status of millimeter wave hybrid integrated-circuit balanced mixers","authors":"C. Nguyen","doi":"10.1109/irmm.1987.9127013","DOIUrl":"https://doi.org/10.1109/irmm.1987.9127013","url":null,"abstract":"The development of millimeter wave hybrid integrated circuit balanced mixers using two-terminal devices has been considered nearly mature. In this paper, the present state of this technology is reviewed. Advantages and disadvantages of existing mixer configurations are discussed along with their measured performances. Some new configurations for both fundamental and subharmonic mixers are also proposed and examined.","PeriodicalId":399243,"journal":{"name":"1987 Twelth International Conference on Infrared and Millimeter Waves","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1987-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121913597","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
Experiments for an eighth harmonic cusptron tube 八次谐波cuscusron管的实验
1987 Twelth International Conference on Infrared and Millimeter Waves Pub Date : 1987-12-01 DOI: 10.1109/irmm.1987.9127085
K. Tiong, S. Kuo, P. E. Miller
{"title":"Experiments for an eighth harmonic cusptron tube","authors":"K. Tiong, S. Kuo, P. E. Miller","doi":"10.1109/irmm.1987.9127085","DOIUrl":"https://doi.org/10.1109/irmm.1987.9127085","url":null,"abstract":"We have set up a cusptron device to compare the performance of π mode and 2π mode operation at 8th harmonic interaction. A concentric e-layer of of 30 Kev (γ=1.06) is produced for wave generation. For 2π mode operation, an 8-slotted waveguide with b/a = 22 is used, where b and a are the radii of the vane and the inner wall of the waveguide respectively. In order to achieve same output frequency for comparison, a 16-slotted waveguide with b/a =1.23 is used for π mode operation. The arrangement of the set up will be described. The preliminary results of the experiments will also be presented.","PeriodicalId":399243,"journal":{"name":"1987 Twelth International Conference on Infrared and Millimeter Waves","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1987-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125824870","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
Symmetric and non-symmetric modes in a 200 kw, 100 GHz gyrotron 200kw, 100ghz回旋管中的对称和非对称模式
1987 Twelth International Conference on Infrared and Millimeter Waves Pub Date : 1987-12-01 DOI: 10.1109/IRMM.1987.9126982
P. Garin, E. Jedar, G. Jendrzejczak, G. Mourier, F. Payen, L. Teyssier
{"title":"Symmetric and non-symmetric modes in a 200 kw, 100 GHz gyrotron","authors":"P. Garin, E. Jedar, G. Jendrzejczak, G. Mourier, F. Payen, L. Teyssier","doi":"10.1109/IRMM.1987.9126982","DOIUrl":"https://doi.org/10.1109/IRMM.1987.9126982","url":null,"abstract":"We have published a few papers on the development of a 100 GHz 200 kW Gyrotron oscillator aiming at producing at least 20,000 pulses with 90 % mode purity.","PeriodicalId":399243,"journal":{"name":"1987 Twelth International Conference on Infrared and Millimeter Waves","volume":"207 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1987-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122323450","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: 3
Electrostatically pumped cross-field free electron laser 静电抽运跨场自由电子激光器
1987 Twelth International Conference on Infrared and Millimeter Waves Pub Date : 1987-12-01 DOI: 10.1109/irmm.1987.9126899
S. Chen, G. L. Johnston, F. Hartemann, G. Bekefi
{"title":"Electrostatically pumped cross-field free electron laser","authors":"S. Chen, G. L. Johnston, F. Hartemann, G. Bekefi","doi":"10.1109/irmm.1987.9126899","DOIUrl":"https://doi.org/10.1109/irmm.1987.9126899","url":null,"abstract":"We report experimental and theoretical studies of a novel type of cross-field microwave generator. The cathode is smooth while the anode is rippled (Fig.1) to produce an azimuthally periodic modulation of the radial electric field (analogous to an electrostatic wiggler). The system is operated in the inverted geometry,1 where electrons are field-emitted from the inside of the smooth outer conductor. The depth of the grooves is adjusted so as to favor FEL interactions and minimize the usual slow-wave (magnetron) interactions.2 Approximate analytic single-particle orbits in the external crossed uniform electric and magnetic fields and the radial electric wiggler field of an idealized planar device are obtained. These orbits provide a basis for uniform and nonuniform kinetic and fluid equilibrium distribution functions. These equilibria in turn provide a basis for linear stability analyses of the device, which yield appropriate dispersion relations. Experimentally, we observe for our parameters (V ∼ 300 kV, I ∼ 1 kA, B‖ ∼ 5 kG, N = 0,8,12,24 wiggler periods) a high power microwave signal in the Ka-band. Removal of the wiggler (smooth-bore magnetron configuration) results in a reduction of the signal by ∼ 20 dB. These results suggest an emission mechanism analogous to that of the rippled-field magnetron.3","PeriodicalId":399243,"journal":{"name":"1987 Twelth International Conference on Infrared and Millimeter Waves","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1987-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125911688","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
Recent advances in tunable Raman fir lasers 可调谐拉曼冷杉激光器的最新进展
1987 Twelth International Conference on Infrared and Millimeter Waves Pub Date : 1987-12-01 DOI: 10.1109/irmm.1987.9127040
J. Izatt, B. Deka, W. Zhu, J. Rai
{"title":"Recent advances in tunable Raman fir lasers","authors":"J. Izatt, B. Deka, W. Zhu, J. Rai","doi":"10.1109/irmm.1987.9127040","DOIUrl":"https://doi.org/10.1109/irmm.1987.9127040","url":null,"abstract":"As new gain media are investigated and new optical pumping conditions are employed, the spectral coverage produced by Raman FIR lasers continues to expand. Concommitant efforts to improve the theoretical modeling are improving our understanding of the laser and contributing to the optimization of its performance.","PeriodicalId":399243,"journal":{"name":"1987 Twelth International Conference on Infrared and Millimeter Waves","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1987-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126179996","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
Induced magnetic perturbations by plasma heating 等离子体加热引起的磁扰动
1987 Twelth International Conference on Infrared and Millimeter Waves Pub Date : 1987-12-01 DOI: 10.1109/IRMM.1987.9127070
M. C. Lee, S. Kuo
{"title":"Induced magnetic perturbations by plasma heating","authors":"M. C. Lee, S. Kuo","doi":"10.1109/IRMM.1987.9127070","DOIUrl":"https://doi.org/10.1109/IRMM.1987.9127070","url":null,"abstract":"We discuss the possible induction of magnetic field fluctuations in laboratory plasma during plasma heating by electromagnetic waves. Basically, the electromagnetic wave excited lower hybrid waves may become pump waves to excite instabilities. We will describe a process that can simultaneously generate plasma density fluctuations and magnetic field fluctuations. Significant cross-field magnetic perturbations can be produced and, then, give rise to the plasma confinement problem during plasma heating.","PeriodicalId":399243,"journal":{"name":"1987 Twelth International Conference on Infrared and Millimeter Waves","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1987-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122570258","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
A small tunable optically pumped far infrared laser 一种小型可调谐光泵远红外激光器
1987 Twelth International Conference on Infrared and Millimeter Waves Pub Date : 1987-12-01 DOI: 10.1109/irmm.1987.9127041
H. Everitt, F. D. De Lucia, D. Skatrud
{"title":"A small tunable optically pumped far infrared laser","authors":"H. Everitt, F. D. De Lucia, D. Skatrud","doi":"10.1109/irmm.1987.9127041","DOIUrl":"https://doi.org/10.1109/irmm.1987.9127041","url":null,"abstract":"A small diameter CW FIR laser that can provide approximately 100 MHz spectrally pure tunability has been developed and studied both experimentally and theoretically (1). Operation of this laser at pressures significantly greater than the maximum allowed by previously accepted theory yields the large tunability. The new model includes additional high energy vibrational states and appropriate energy transfer mechanisms that fundamentally alter the behavior in the high pressure, high pump intensity regime. Although 13CH3F is used for both the experimental demonstration and the theoretical model, the concept is general and should apply to all diffusion deactivated FIR lasers.","PeriodicalId":399243,"journal":{"name":"1987 Twelth International Conference on Infrared and Millimeter Waves","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1987-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122756134","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
Fir results in [pd (-chnx) 2br] br2 Fir产生[pd (-chnx) 2br] br2
1987 Twelth International Conference on Infrared and Millimeter Waves Pub Date : 1987-12-01 DOI: 10.1109/IRMM.1987.9127038
P. Janssen, K. Leuven
{"title":"Fir results in [pd (-chnx) 2br] br2","authors":"P. Janssen, K. Leuven","doi":"10.1109/IRMM.1987.9127038","DOIUrl":"https://doi.org/10.1109/IRMM.1987.9127038","url":null,"abstract":"The FIR transmission spectrum of [Pd(-chnx)2Br] Br2 was studied in magnetic fields up to 7 T and at temperatures below 2.5 K. With the magnetic field oriented perpendicular to the c-axis, several peaks were observed. The origin of these is not yet well understood.","PeriodicalId":399243,"journal":{"name":"1987 Twelth International Conference on Infrared and Millimeter Waves","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1987-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122472962","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
Parasitic effects on millimeter-wave phase shifter design 毫米波移相器设计中的寄生效应
1987 Twelth International Conference on Infrared and Millimeter Waves Pub Date : 1987-12-01 DOI: 10.1109/irmm.1987.9127058
J. Bong, K. Chang
{"title":"Parasitic effects on millimeter-wave phase shifter design","authors":"J. Bong, K. Chang","doi":"10.1109/irmm.1987.9127058","DOIUrl":"https://doi.org/10.1109/irmm.1987.9127058","url":null,"abstract":"The parasitic effects on millimeter-wave phase shifters have been studied for both analog and digital applications. The analog phase shifter uses the hybrid coupled configuration and the digital phase shifter uses the loaded line configuaraton. The results have shown that the parasitics have strong effects on the phase shifter performance at high frequencies.","PeriodicalId":399243,"journal":{"name":"1987 Twelth International Conference on Infrared and Millimeter Waves","volume":"214 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1987-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115508425","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
Molecular absorption intensity measurements in the millimeter wavelength region 毫米波区分子吸收强度测量
1987 Twelth International Conference on Infrared and Millimeter Waves Pub Date : 1987-12-01 DOI: 10.1109/irmm.1987.9126891
D. P. Campbell, D. M. Guillory, J. Gallagher
{"title":"Molecular absorption intensity measurements in the millimeter wavelength region","authors":"D. P. Campbell, D. M. Guillory, J. Gallagher","doi":"10.1109/irmm.1987.9126891","DOIUrl":"https://doi.org/10.1109/irmm.1987.9126891","url":null,"abstract":"Techniques are discussed for measurement of molecular absorption intensity in the millimeter wavelength region with Fabry-Perot Interferometers. Comparison is made with other intensity measuring schemes. Included in the presentation are experimental and theoretical considerations of cavity characteristics, pressure effects, spectral line density, hydrogen bonding, measurement techniques and source stability.","PeriodicalId":399243,"journal":{"name":"1987 Twelth International Conference on Infrared and Millimeter Waves","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1987-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131155832","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
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