Pub Date : 1987-12-01DOI: 10.1109/irmm.1987.9126931
L. Ulbricht, J. Schlafer
Optoelectronic packages for microwave diode lasers and PIN photodiodes have been developed that preserve RF integrity of the devices to beyond 15 GHz, provide effective optical coupling to single-mode fiber, and, in the case of the laser, thermally stabilize operation over wide ambient conditions.
{"title":"Laser and photodetector packages for microwave optical transmission","authors":"L. Ulbricht, J. Schlafer","doi":"10.1109/irmm.1987.9126931","DOIUrl":"https://doi.org/10.1109/irmm.1987.9126931","url":null,"abstract":"Optoelectronic packages for microwave diode lasers and PIN photodiodes have been developed that preserve RF integrity of the devices to beyond 15 GHz, provide effective optical coupling to single-mode fiber, and, in the case of the laser, thermally stabilize operation over wide ambient conditions.","PeriodicalId":399243,"journal":{"name":"1987 Twelth International Conference on Infrared and Millimeter Waves","volume":"159 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":"115427030","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}
Pub Date : 1987-12-01DOI: 10.1109/irmm.1987.9126989
F. Tischer
Oversized waveguides and resonators offer advantageous solutions of the waveguiding and circuit problems at millimeter-wave frequencies. They have low losses and high Q factors in comparison with rectangular waveguides of standard sizes and with miniaturized structures, such as microstrip and fin line. Also, manufacturing of integrated circuits based on suitable types of oversized structures is inexpensive. The sizes which are in the magnitude of millimeters are relatively small and, if compared with the usual dimensions of antennas, practical. Miniaturized structures, in comparison with the required antenna dimensions, are only marginally practical.
{"title":"Loss and mode characteristics of oversized waveguides and resonators","authors":"F. Tischer","doi":"10.1109/irmm.1987.9126989","DOIUrl":"https://doi.org/10.1109/irmm.1987.9126989","url":null,"abstract":"Oversized waveguides and resonators offer advantageous solutions of the waveguiding and circuit problems at millimeter-wave frequencies. They have low losses and high Q factors in comparison with rectangular waveguides of standard sizes and with miniaturized structures, such as microstrip and fin line. Also, manufacturing of integrated circuits based on suitable types of oversized structures is inexpensive. The sizes which are in the magnitude of millimeters are relatively small and, if compared with the usual dimensions of antennas, practical. Miniaturized structures, in comparison with the required antenna dimensions, are only marginally practical.","PeriodicalId":399243,"journal":{"name":"1987 Twelth International Conference on Infrared and Millimeter Waves","volume":"318 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":"123161998","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}
Pub Date : 1987-12-01DOI: 10.1109/irmm.1987.9126896
C. J. Gibbins
A comparison has been made of line-of-sight propagation over a 500 m path at millimetre, infrared and optical wavelengths, under a wide variety of meteorological conditions. The results indicate that, for climates prone to conditions of fog, the millimetric region of the electromagnetic spectrum provides a more effective and reliable means of communication.
{"title":"A comparison of line-of-sight transmissions at millimetre, infrared and optical wavelengths","authors":"C. J. Gibbins","doi":"10.1109/irmm.1987.9126896","DOIUrl":"https://doi.org/10.1109/irmm.1987.9126896","url":null,"abstract":"A comparison has been made of line-of-sight propagation over a 500 m path at millimetre, infrared and optical wavelengths, under a wide variety of meteorological conditions. The results indicate that, for climates prone to conditions of fog, the millimetric region of the electromagnetic spectrum provides a more effective and reliable means of communication.","PeriodicalId":399243,"journal":{"name":"1987 Twelth International Conference on Infrared and Millimeter Waves","volume":"26-27 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":"123649088","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}
Pub Date : 1987-12-01DOI: 10.1109/irmm.1987.9126914
P. M. Phillips, E. Marshall, C. Shaughnessy, J. Walsh
A comparison of the tuning, gain, saturation, and beam-quality-related restrictions of metal-grating and dielectric-film free-electron lasers will be presented. While recent operation of the former has resulted in tunable radiation in the low mm wavelength band, indications are that the device may readily be scaled to operate at submm, far-infrared, and possibly shorter wavelengths. For the latter, operation to date has been well into the FIR. These results, and an in depth look at the prospects of the metal-grating FEL, will also be summarized.
{"title":"A comparison at infrared wavelengths of metal-grating and dielectric-film free-electron lasers","authors":"P. M. Phillips, E. Marshall, C. Shaughnessy, J. Walsh","doi":"10.1109/irmm.1987.9126914","DOIUrl":"https://doi.org/10.1109/irmm.1987.9126914","url":null,"abstract":"A comparison of the tuning, gain, saturation, and beam-quality-related restrictions of metal-grating and dielectric-film free-electron lasers will be presented. While recent operation of the former has resulted in tunable radiation in the low mm wavelength band, indications are that the device may readily be scaled to operate at submm, far-infrared, and possibly shorter wavelengths. For the latter, operation to date has been well into the FIR. These results, and an in depth look at the prospects of the metal-grating FEL, will also be summarized.","PeriodicalId":399243,"journal":{"name":"1987 Twelth International Conference on Infrared and Millimeter Waves","volume":"15 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":"115267824","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}
Pub Date : 1987-12-01DOI: 10.1109/irmm.1987.9127009
C. Seashore
A significant program Is currently underway 1n the United States to Investigate, develop, and produce a variety of GaAs analog circuits for use 1n microwave and millimeter wave sensors and systems. This represents a “new wave” of RF technology which promises to significantly change system engineering thinking relative to RF Architectures. At millimeter wave frequencies, we look forward to a relatively high level of critical component integration based on MESFET and HEMT device Implementations. These designs will spawn more compact RF front ends with colocated antenna/transceiver functions and innovative packaging concepts which will survive and function 1n a typical military operational environment which includes challenging temperature, shock, and special handling requirements.
{"title":"Millimeter wave monolithic transceivers","authors":"C. Seashore","doi":"10.1109/irmm.1987.9127009","DOIUrl":"https://doi.org/10.1109/irmm.1987.9127009","url":null,"abstract":"A significant program Is currently underway 1n the United States to Investigate, develop, and produce a variety of GaAs analog circuits for use 1n microwave and millimeter wave sensors and systems. This represents a “new wave” of RF technology which promises to significantly change system engineering thinking relative to RF Architectures. At millimeter wave frequencies, we look forward to a relatively high level of critical component integration based on MESFET and HEMT device Implementations. These designs will spawn more compact RF front ends with colocated antenna/transceiver functions and innovative packaging concepts which will survive and function 1n a typical military operational environment which includes challenging temperature, shock, and special handling requirements.","PeriodicalId":399243,"journal":{"name":"1987 Twelth International Conference on Infrared and Millimeter Waves","volume":"47 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":"115660156","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}
Pub Date : 1987-12-01DOI: 10.1109/IRMM.1987.9126993
K. Lee, M. Frerking
Two types of frequency independent planar antennas on thick dielectrics, the log-spiral and log-periodic, have been designed, fabricated and characterized at millimeter wave frequencies. Measured beam patterns displayed beam widths and side lobe angles comparable to theory, and increasing the number of terminals produced similar patterns.
{"title":"Planar antennas on thick dielectric substrates","authors":"K. Lee, M. Frerking","doi":"10.1109/IRMM.1987.9126993","DOIUrl":"https://doi.org/10.1109/IRMM.1987.9126993","url":null,"abstract":"Two types of frequency independent planar antennas on thick dielectrics, the log-spiral and log-periodic, have been designed, fabricated and characterized at millimeter wave frequencies. Measured beam patterns displayed beam widths and side lobe angles comparable to theory, and increasing the number of terminals produced similar patterns.","PeriodicalId":399243,"journal":{"name":"1987 Twelth International Conference on Infrared and Millimeter Waves","volume":"111 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":"124776661","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}
Pub Date : 1987-12-01DOI: 10.1109/irmm.1987.9126912
Shu Yuwen, Zhang Xiaolin
This paper describes a multielement parallel scanning infrared imaging systems and shows that the instantaneous field of view determined by the y-direetion center space of the adjacent sensitive area is a important parameter for calculating the systems noise equivalent, bandwidth, and designing a two-dimensional scanning system. The limited and inaccurate calculations of the systems noise equivalent bandwidth, in previous article are pointed out and the new calculation equations given in this paper are available.
{"title":"The modified equations of a multielement parallel scanning imaging systems Δf and netd","authors":"Shu Yuwen, Zhang Xiaolin","doi":"10.1109/irmm.1987.9126912","DOIUrl":"https://doi.org/10.1109/irmm.1987.9126912","url":null,"abstract":"This paper describes a multielement parallel scanning infrared imaging systems and shows that the instantaneous field of view determined by the y-direetion center space of the adjacent sensitive area is a important parameter for calculating the systems noise equivalent, bandwidth, and designing a two-dimensional scanning system. The limited and inaccurate calculations of the systems noise equivalent bandwidth, in previous article are pointed out and the new calculation equations given in this paper are available.","PeriodicalId":399243,"journal":{"name":"1987 Twelth International Conference on Infrared and Millimeter Waves","volume":"26 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":"123115494","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}
Pub Date : 1987-12-01DOI: 10.1109/IRMM.1987.9127020
N. Inoue, Y. Yasuoka
Recently, there has been growing interest in thin-film antenna-coupled infrared laser detectors. In the thin-film infrared laser detectors, the warm carrier devices have been fabricated using the single crystal Ge wafer(1). But if these devices could be fabricated by using Ge thin-films deposited on insulating substrates, it would be attractive for flexibility of fabrication of the device structure. The responsivity of these devices, on the other hand, is proportional to the carrier mobility of semiconductor films(2). Therefore, semiconducting-films with large carrier mobility are necessary instead of the single crystal Ge wafer.
{"title":"Properties of evaporated ge thin-films for warm carrier devices","authors":"N. Inoue, Y. Yasuoka","doi":"10.1109/IRMM.1987.9127020","DOIUrl":"https://doi.org/10.1109/IRMM.1987.9127020","url":null,"abstract":"Recently, there has been growing interest in thin-film antenna-coupled infrared laser detectors. In the thin-film infrared laser detectors, the warm carrier devices have been fabricated using the single crystal Ge wafer(1). But if these devices could be fabricated by using Ge thin-films deposited on insulating substrates, it would be attractive for flexibility of fabrication of the device structure. The responsivity of these devices, on the other hand, is proportional to the carrier mobility of semiconductor films(2). Therefore, semiconducting-films with large carrier mobility are necessary instead of the single crystal Ge wafer.","PeriodicalId":399243,"journal":{"name":"1987 Twelth International Conference on Infrared and Millimeter Waves","volume":"15 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":"128919204","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}
Pub Date : 1987-12-01DOI: 10.1109/irmm.1987.9127010
J. S. Hong, J. Shi
This paper describes a millimeter-wave. frequency doubler in corporating a novel mount structure whic combines suspend microstrip with fin-line and can be used in millimeter-wave integrated circut.
本文描述了一种毫米波。采用悬浮微带与鳍线相结合的新型安装结构，可用于毫米波集成电路。
{"title":"A frequency doubler for millimeter-wave applications","authors":"J. S. Hong, J. Shi","doi":"10.1109/irmm.1987.9127010","DOIUrl":"https://doi.org/10.1109/irmm.1987.9127010","url":null,"abstract":"This paper describes a millimeter-wave. frequency doubler in corporating a novel mount structure whic combines suspend microstrip with fin-line and can be used in millimeter-wave integrated circut.","PeriodicalId":399243,"journal":{"name":"1987 Twelth International Conference on Infrared and Millimeter Waves","volume":"24 9 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":"128795811","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}
Pub Date : 1987-12-01DOI: 10.1109/IRMM.1987.9127084
S. Kuo, K. Tiong, P. E. Miller, Q. Ji, W. Namkung
The operation characteristics of cusptron tubes are studied. We have evaluated the functional dependences of the saturation efficiencies on the beam energy, and on the ratio of the outer and inner radii of the tubes for three different cyclotron harmonics, i.e. N0 = 8, 10 and 12, and for both π mode and 2π mode operation.
{"title":"Simulation for the operation characteristics of cusptron oscillators","authors":"S. Kuo, K. Tiong, P. E. Miller, Q. Ji, W. Namkung","doi":"10.1109/IRMM.1987.9127084","DOIUrl":"https://doi.org/10.1109/IRMM.1987.9127084","url":null,"abstract":"The operation characteristics of cusptron tubes are studied. We have evaluated the functional dependences of the saturation efficiencies on the beam energy, and on the ratio of the outer and inner radii of the tubes for three different cyclotron harmonics, i.e. N0 = 8, 10 and 12, and for both π mode and 2π mode operation.","PeriodicalId":399243,"journal":{"name":"1987 Twelth International Conference on Infrared and Millimeter Waves","volume":"35 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":"127527285","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}
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