Pub Date : 1988-06-07DOI: 10.1109/CPEM.1988.671151
J. Won, J. S. Kim, J. Jo, C. Weiss
We report harmonic mixing results of FIR frequencies with a waveguide-optical harmonic mixer using a micrometer-size Schottky-barrier diode which is able to generate high order harmonics at room temperature.
{"title":"FIR Frequency Measurement With A Waveguide-optical Harmonic Mixer","authors":"J. Won, J. S. Kim, J. Jo, C. Weiss","doi":"10.1109/CPEM.1988.671151","DOIUrl":"https://doi.org/10.1109/CPEM.1988.671151","url":null,"abstract":"We report harmonic mixing results of FIR frequencies with a waveguide-optical harmonic mixer using a micrometer-size Schottky-barrier diode which is able to generate high order harmonics at room temperature.","PeriodicalId":326579,"journal":{"name":"1988 Conference on Precision Electromagnetic Measurements","volume":"67 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1988-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116607158","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 : 1988-06-07DOI: 10.1109/CPEM.1988.671373
A. Y. AlMazroo, J. Toscano, A. Elshabini-Riad
A technique for modeling multilayer thick film components using time domain measurements is presented. A multilayer inductor, formed by stacking spiral coils vertically with intervening dielectric layer, is used to demonstrate the technique. The component under test is placed at the end of a reference line, and a TDR waveform is acquired. A physically based model is developed to fit the TDR information.
{"title":"Modeling of Multilayer Thick Film Components Using Time Domain Techniques","authors":"A. Y. AlMazroo, J. Toscano, A. Elshabini-Riad","doi":"10.1109/CPEM.1988.671373","DOIUrl":"https://doi.org/10.1109/CPEM.1988.671373","url":null,"abstract":"A technique for modeling multilayer thick film components using time domain measurements is presented. A multilayer inductor, formed by stacking spiral coils vertically with intervening dielectric layer, is used to demonstrate the technique. The component under test is placed at the end of a reference line, and a TDR waveform is acquired. A physically based model is developed to fit the TDR information.","PeriodicalId":326579,"journal":{"name":"1988 Conference on Precision Electromagnetic Measurements","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1988-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131534814","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 : 1988-06-07DOI: 10.1109/CPEM.1988.671298
A. Murakami, S. Yamamoto, T. Yamanami
We designed a new coordinate measuring equipment that uses the LC resonant circuit. The pointing devices of this equipment have no cords and no batteries and dose not directly contact the sensor board. It can measure coordinates at an accuracy of up to 0.1mm and also detect the state of the switch.
{"title":"Development of Coordinate Measuring Equipment Using Electromagnetic Give and Receive Action Method","authors":"A. Murakami, S. Yamamoto, T. Yamanami","doi":"10.1109/CPEM.1988.671298","DOIUrl":"https://doi.org/10.1109/CPEM.1988.671298","url":null,"abstract":"We designed a new coordinate measuring equipment that uses the LC resonant circuit. The pointing devices of this equipment have no cords and no batteries and dose not directly contact the sensor board. It can measure coordinates at an accuracy of up to 0.1mm and also detect the state of the switch.","PeriodicalId":326579,"journal":{"name":"1988 Conference on Precision Electromagnetic Measurements","volume":"87 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1988-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131712327","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 : 1988-06-07DOI: 10.1109/CPEM.1988.671251
L. Shiguang
This report presents an overview of recent developments on VLBI in Shanghai Observatory. The Shanghai Radio Station equipped with 25 meter antenna and other facilities was operational last year. The VLBI data processing system has been set up recently. It includes the S-2 VLBI data processor and a series of post correlation processing programs for astronomy as well as geodesy.
{"title":"Progress in VLBI at Shanghai Observatory","authors":"L. Shiguang","doi":"10.1109/CPEM.1988.671251","DOIUrl":"https://doi.org/10.1109/CPEM.1988.671251","url":null,"abstract":"This report presents an overview of recent developments on VLBI in Shanghai Observatory. The Shanghai Radio Station equipped with 25 meter antenna and other facilities was operational last year. The VLBI data processing system has been set up recently. It includes the S-2 VLBI data processor and a series of post correlation processing programs for astronomy as well as geodesy.","PeriodicalId":326579,"journal":{"name":"1988 Conference on Precision Electromagnetic Measurements","volume":"630 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1988-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132960690","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 : 1988-06-07DOI: 10.1109/CPEM.1988.671208
T. Morikawa, C. Miki, M. Uratsuka, E. Kawai, M. Imae, F. Takahashi, I. Harvey, T. Percival
In November and December 1987, the portable receiver experiment was performed betwene Japan and Australia to calibrate the delay time in GPS and GMS time comparison receivers. By the calibration the accuracy of GPS and GMS time comparison was improved to be 70ns.
{"title":"Calibration of the Delay Time in the GPS and GMS Time Comparison Receivers of Japan and Australia Using Portable Reference Receivers","authors":"T. Morikawa, C. Miki, M. Uratsuka, E. Kawai, M. Imae, F. Takahashi, I. Harvey, T. Percival","doi":"10.1109/CPEM.1988.671208","DOIUrl":"https://doi.org/10.1109/CPEM.1988.671208","url":null,"abstract":"In November and December 1987, the portable receiver experiment was performed betwene Japan and Australia to calibrate the delay time in GPS and GMS time comparison receivers. By the calibration the accuracy of GPS and GMS time comparison was improved to be 70ns.","PeriodicalId":326579,"journal":{"name":"1988 Conference on Precision Electromagnetic Measurements","volume":"30 23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1988-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133439258","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 : 1988-06-07DOI: 10.1109/CPEM.1988.671359
Wang Zhi, Sun Shenghe, Liu Yue
A calibration method using four short air tines with different length is introduced in this paper. It is more precise than Li's method because tesst square principle is used to resolve contradictory equation in the presence of noise [1], and more simple than Hoer's method because only linear equation and formula resolution are used in calculation [2].
{"title":"The Six-Port Four Standards Linear Least Square Calibration Method","authors":"Wang Zhi, Sun Shenghe, Liu Yue","doi":"10.1109/CPEM.1988.671359","DOIUrl":"https://doi.org/10.1109/CPEM.1988.671359","url":null,"abstract":"A calibration method using four short air tines with different length is introduced in this paper. It is more precise than Li's method because tesst square principle is used to resolve contradictory equation in the presence of noise [1], and more simple than Hoer's method because only linear equation and formula resolution are used in calculation [2].","PeriodicalId":326579,"journal":{"name":"1988 Conference on Precision Electromagnetic Measurements","volume":"134 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1988-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133857500","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 : 1988-06-07DOI: 10.1109/CPEM.1988.671276
T. Iwasaki, I. Yokoshima
The structure and charactristics of a fiber optic step attenuator which is improved on the spectral dependency are described. The calibration system is also introduced.
介绍了一种改进了光谱依赖性的光纤阶跃衰减器的结构和特性。并介绍了标定系统。
{"title":"Step Attenuator for Multimode Fiber Optics and its Calibration","authors":"T. Iwasaki, I. Yokoshima","doi":"10.1109/CPEM.1988.671276","DOIUrl":"https://doi.org/10.1109/CPEM.1988.671276","url":null,"abstract":"The structure and charactristics of a fiber optic step attenuator which is improved on the spectral dependency are described. The calibration system is also introduced.","PeriodicalId":326579,"journal":{"name":"1988 Conference on Precision Electromagnetic Measurements","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1988-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122365835","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 : 1988-06-07DOI: 10.1109/CPEM.1988.671349
Wang Zhi, Sun Shenghe, Liu Yue
In this paper, a new formula to calculate load reflection coefficient is derived using absolute power theory of six-port measurement system. The computer simulation and experiment all show that in the presence of noise this formula is more precise than the one we used generally.
{"title":"New Reflection Coefficient Formula With Higher Precision in Six-Port","authors":"Wang Zhi, Sun Shenghe, Liu Yue","doi":"10.1109/CPEM.1988.671349","DOIUrl":"https://doi.org/10.1109/CPEM.1988.671349","url":null,"abstract":"In this paper, a new formula to calculate load reflection coefficient is derived using absolute power theory of six-port measurement system. The computer simulation and experiment all show that in the presence of noise this formula is more precise than the one we used generally.","PeriodicalId":326579,"journal":{"name":"1988 Conference on Precision Electromagnetic Measurements","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1988-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123921469","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 : 1988-06-07DOI: 10.1109/CPEM.1988.671192
V. Kroupa
In the present contribution we have shown the 1/f/sup 2/ noise in oscillators need not be neceesarily generated by environmental temperature fluctuations. As a consequence we investigate a possible theoretical evidence for the relationship between 1/f and l/f/sup 2/ noises.
{"title":"Extremely Low Frequency Noise in Oscillators","authors":"V. Kroupa","doi":"10.1109/CPEM.1988.671192","DOIUrl":"https://doi.org/10.1109/CPEM.1988.671192","url":null,"abstract":"In the present contribution we have shown the 1/f/sup 2/ noise in oscillators need not be neceesarily generated by environmental temperature fluctuations. As a consequence we investigate a possible theoretical evidence for the relationship between 1/f and l/f/sup 2/ noises.","PeriodicalId":326579,"journal":{"name":"1988 Conference on Precision Electromagnetic Measurements","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1988-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127927154","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 : 1988-06-07DOI: 10.1109/CPEM.1988.671248
N. Kawaguchi, N. Kurihara, J. Amagai, F. Takahashi
The millimeter accuracy of the geodetic VLBI measurements was demonstrated in the experiments repeated 4 times on a 54-km baseline between a 5-m transportable antenna at Tsukuba and a 26-m antenna at Kashima. The error analysis shows that the thermal reeeiver noise is a main cause of the delay observation error and the atmospheric fluctuations mainly affect on the delay rate observations.
{"title":"The Millimeter Accuracy of the Geodetic VLBI Measurements Achieved on a 54-KM Base Line","authors":"N. Kawaguchi, N. Kurihara, J. Amagai, F. Takahashi","doi":"10.1109/CPEM.1988.671248","DOIUrl":"https://doi.org/10.1109/CPEM.1988.671248","url":null,"abstract":"The millimeter accuracy of the geodetic VLBI measurements was demonstrated in the experiments repeated 4 times on a 54-km baseline between a 5-m transportable antenna at Tsukuba and a 26-m antenna at Kashima. The error analysis shows that the thermal reeeiver noise is a main cause of the delay observation error and the atmospheric fluctuations mainly affect on the delay rate observations.","PeriodicalId":326579,"journal":{"name":"1988 Conference on Precision Electromagnetic Measurements","volume":"121 1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1988-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129394026","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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