Pub Date : 1986-06-02DOI: 10.1109/MWSYM.1986.1132266
J. P. Hansen
A novel laboratory measurement system is described. The apparatus combines ultra high resolution radar techniques and split screen video photography in order to capture the microwave scattering effects of small scale transient features. One example presented is a time history of the backscatter at 9.0 GHz caused by the splash of a water drop on a water surface.
{"title":"A System for Performing Ultra High Resolution Backscatter Measurements of Splashes","authors":"J. P. Hansen","doi":"10.1109/MWSYM.1986.1132266","DOIUrl":"https://doi.org/10.1109/MWSYM.1986.1132266","url":null,"abstract":"A novel laboratory measurement system is described. The apparatus combines ultra high resolution radar techniques and split screen video photography in order to capture the microwave scattering effects of small scale transient features. One example presented is a time history of the backscatter at 9.0 GHz caused by the splash of a water drop on a water surface.","PeriodicalId":109161,"journal":{"name":"1986 IEEE MTT-S International Microwave Symposium Digest","volume":"417 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1986-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124187575","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 : 1986-06-02DOI: 10.1109/MWSYM.1986.1132148
J. Citerne
In this paper, several computational schemes, applicable to passive components to be used in millimetre wave circuitry, are discussed. These schemes lie on concepts and techniques which are in most-cases, well known but rarely experimented on integrated components due to the importance of the numerical effort to produce.
{"title":"Recent Progress in Computing Capabilities of Millimetre Wave Integrated Passive Components","authors":"J. Citerne","doi":"10.1109/MWSYM.1986.1132148","DOIUrl":"https://doi.org/10.1109/MWSYM.1986.1132148","url":null,"abstract":"In this paper, several computational schemes, applicable to passive components to be used in millimetre wave circuitry, are discussed. These schemes lie on concepts and techniques which are in most-cases, well known but rarely experimented on integrated components due to the importance of the numerical effort to produce.","PeriodicalId":109161,"journal":{"name":"1986 IEEE MTT-S International Microwave Symposium Digest","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1986-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128559958","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 : 1986-06-02DOI: 10.1109/MWSYM.1986.1132161
HI Ijlh lJ”r---7JAml
LCX synthesis and pattern search optimisation techniques are used to construct a very effective algorithm for computer aided tuning of microwave filters. Intercavity couplings and resonator detunings of the short-circuited network under test are worked out from the measurement of the phase of the reflection coefficient. The technique proves to be successful in tuning a 6-pole filter having both elliptic attenuation peaks and group delay equalisation and looks very promising for properly aligning channel filters of manifold multiplexers.
{"title":"Computer-Aided Tuning of Microwave Filters","authors":"HI Ijlh lJ”r---7JAml","doi":"10.1109/MWSYM.1986.1132161","DOIUrl":"https://doi.org/10.1109/MWSYM.1986.1132161","url":null,"abstract":"LCX synthesis and pattern search optimisation techniques are used to construct a very effective algorithm for computer aided tuning of microwave filters. Intercavity couplings and resonator detunings of the short-circuited network under test are worked out from the measurement of the phase of the reflection coefficient. The technique proves to be successful in tuning a 6-pole filter having both elliptic attenuation peaks and group delay equalisation and looks very promising for properly aligning channel filters of manifold multiplexers.","PeriodicalId":109161,"journal":{"name":"1986 IEEE MTT-S International Microwave Symposium Digest","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1986-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128603788","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 : 1986-06-02DOI: 10.1109/MWSYM.1986.1132159
Yoshio Kobayashi, S. Nakayama
Some useful charts are presented to design precisely dielectric rod and ring resonators placed symmetrically in conductor cavities. When a resonant frequency of the TE/sub 01delta/ mode and necessary material constants are given, the optimum dimensions for offering the best separation from other resonances, the frequency-temperature coefficient, and the unloaded Q can be determined from these charts.
{"title":"Design Charts for Shielded Dielectric Rod and Ring Resonators","authors":"Yoshio Kobayashi, S. Nakayama","doi":"10.1109/MWSYM.1986.1132159","DOIUrl":"https://doi.org/10.1109/MWSYM.1986.1132159","url":null,"abstract":"Some useful charts are presented to design precisely dielectric rod and ring resonators placed symmetrically in conductor cavities. When a resonant frequency of the TE/sub 01delta/ mode and necessary material constants are given, the optimum dimensions for offering the best separation from other resonances, the frequency-temperature coefficient, and the unloaded Q can be determined from these charts.","PeriodicalId":109161,"journal":{"name":"1986 IEEE MTT-S International Microwave Symposium Digest","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1986-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129250165","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 : 1986-06-02DOI: 10.1109/MWSYM.1986.1132205
H. Shigesawa, M. Tsuji, K. Takiyama
We propose here a new idea to design filters which consist of low permittivity dielectric resonators placed in the two paths which are realized by a partial H-plane bifurcation in a rectangular waveguide. This type of filters is regarded as the parallel connection of two evanescent - mode waveguide filters. This paper will try to design such a filter with the Chebyshev's passband response and also with the stopband response with attenuation poles at desired frequencies, and practical performance aspects of this type of filters will be discussed from the view points of both analytical methods and experiments in the X-band.
{"title":"Two Path Cutoff Waveguide Resonator Filters with Attenuation Poles","authors":"H. Shigesawa, M. Tsuji, K. Takiyama","doi":"10.1109/MWSYM.1986.1132205","DOIUrl":"https://doi.org/10.1109/MWSYM.1986.1132205","url":null,"abstract":"We propose here a new idea to design filters which consist of low permittivity dielectric resonators placed in the two paths which are realized by a partial H-plane bifurcation in a rectangular waveguide. This type of filters is regarded as the parallel connection of two evanescent - mode waveguide filters. This paper will try to design such a filter with the Chebyshev's passband response and also with the stopband response with attenuation poles at desired frequencies, and practical performance aspects of this type of filters will be discussed from the view points of both analytical methods and experiments in the X-band.","PeriodicalId":109161,"journal":{"name":"1986 IEEE MTT-S International Microwave Symposium Digest","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1986-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124326174","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 : 1986-06-02DOI: 10.1109/MWSYM.1986.1132283
R. Veghte, C. Balanis
The distortion of an electrical pulse caused by dispersion as it propagates along a microstrip line is investigated. A model for dispersion of the phase constant is selected to meet the frequency, accuracy, and microstrip parametric requirements. Numerical integration and Taylor series expansion techniques are used to compute the shape of the DC dispersed pulses having square and Gaussian envelope shapes. Taylor series expansion methods are more convenient for the analysis of RF pulses.
{"title":"Dispersion of Transient Signals in Microstrip Transmission Lines","authors":"R. Veghte, C. Balanis","doi":"10.1109/MWSYM.1986.1132283","DOIUrl":"https://doi.org/10.1109/MWSYM.1986.1132283","url":null,"abstract":"The distortion of an electrical pulse caused by dispersion as it propagates along a microstrip line is investigated. A model for dispersion of the phase constant is selected to meet the frequency, accuracy, and microstrip parametric requirements. Numerical integration and Taylor series expansion techniques are used to compute the shape of the DC dispersed pulses having square and Gaussian envelope shapes. Taylor series expansion methods are more convenient for the analysis of RF pulses.","PeriodicalId":109161,"journal":{"name":"1986 IEEE MTT-S International Microwave Symposium Digest","volume":"53 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1986-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122864398","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 : 1986-06-02DOI: 10.1109/MWSYM.1986.1132280
W. P. Wheless, D. Kajfez
An iterative procedure is developed for least squares estimation, from measured impedance data, of the parameters specifying a lumped-element resonant circuit equivalent to a dielectric resonator single resonance. The procedure is applicable to large sets of measured data obtained by an automatic network analyzer.
{"title":"Microwave Resonator Circuit Model from Measured Data Fitting","authors":"W. P. Wheless, D. Kajfez","doi":"10.1109/MWSYM.1986.1132280","DOIUrl":"https://doi.org/10.1109/MWSYM.1986.1132280","url":null,"abstract":"An iterative procedure is developed for least squares estimation, from measured impedance data, of the parameters specifying a lumped-element resonant circuit equivalent to a dielectric resonator single resonance. The procedure is applicable to large sets of measured data obtained by an automatic network analyzer.","PeriodicalId":109161,"journal":{"name":"1986 IEEE MTT-S International Microwave Symposium Digest","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1986-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125783281","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 : 1986-06-02DOI: 10.1109/MWSYM.1986.1132192
A. Saad, J. Miller, A. Mitha, R. Brown
This paper presents an accurate analysis of antipodal ridge W/G structure. Design parameters like the cut-off frequencies of TE/sub 10/ and TE/sub 20/ modes, characteristic impedance and gap impedance have been calculated. Comparison with exact analysis of such structure reported in Literature, shows very good agreement. Using the fact that antipodal ridge structures provide very large bandwidth (about twice that of double ridge W/G structures), a lowpass filter with extremely wide stopband using evanescent mode-antipodal ridge W/G techniques has been developed and tested. Spurious free response up to at least the sixth harmonic has been achieved.
{"title":"Analysis of Antipodal Ridge Waveguide Structure and Application on Extremely Wide Stopband Lowpass Filter","authors":"A. Saad, J. Miller, A. Mitha, R. Brown","doi":"10.1109/MWSYM.1986.1132192","DOIUrl":"https://doi.org/10.1109/MWSYM.1986.1132192","url":null,"abstract":"This paper presents an accurate analysis of antipodal ridge W/G structure. Design parameters like the cut-off frequencies of TE/sub 10/ and TE/sub 20/ modes, characteristic impedance and gap impedance have been calculated. Comparison with exact analysis of such structure reported in Literature, shows very good agreement. Using the fact that antipodal ridge structures provide very large bandwidth (about twice that of double ridge W/G structures), a lowpass filter with extremely wide stopband using evanescent mode-antipodal ridge W/G techniques has been developed and tested. Spurious free response up to at least the sixth harmonic has been achieved.","PeriodicalId":109161,"journal":{"name":"1986 IEEE MTT-S International Microwave Symposium Digest","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1986-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126851898","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 : 1986-06-02DOI: 10.1109/MWSYM.1986.1132162
J. Frenna
This paper describes the synthesis techniques and experimental verification for the realization of dual-mode longitudinal filters with arbitrary polarization of input and output ports. This represents a generalization of the synthesis procedure and offers the possibility of different physical form factors in the implementation of filters and multiplexing networks for satellite systems.
{"title":"Realization of Dual-Mode Longitudinal Filters with Arbitrary Polarization of Input and Output Ports","authors":"J. Frenna","doi":"10.1109/MWSYM.1986.1132162","DOIUrl":"https://doi.org/10.1109/MWSYM.1986.1132162","url":null,"abstract":"This paper describes the synthesis techniques and experimental verification for the realization of dual-mode longitudinal filters with arbitrary polarization of input and output ports. This represents a generalization of the synthesis procedure and offers the possibility of different physical form factors in the implementation of filters and multiplexing networks for satellite systems.","PeriodicalId":109161,"journal":{"name":"1986 IEEE MTT-S International Microwave Symposium Digest","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1986-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127128276","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 : 1986-06-02DOI: 10.1109/MWSYM.1986.1132200
R. Gutmann, D. Fryklund, D. Menzer
A variety of discrete and monolithically integrated GaAs MESFETs have been characterized for microwave switching figure-of-merit and power handling capability. Design principles for GaAs FETs in broadband switching applications are presented with an emphasis on tradeoffs between conducting-state resistance, non-conducting state capacitance and power handling. Switching frequency figure-of-merit values between 200 and 400 GHz have been achieved with 1 watt power handling capability.
{"title":"Characterization and Design of GaAs MESFETs for Broadband Control Applications","authors":"R. Gutmann, D. Fryklund, D. Menzer","doi":"10.1109/MWSYM.1986.1132200","DOIUrl":"https://doi.org/10.1109/MWSYM.1986.1132200","url":null,"abstract":"A variety of discrete and monolithically integrated GaAs MESFETs have been characterized for microwave switching figure-of-merit and power handling capability. Design principles for GaAs FETs in broadband switching applications are presented with an emphasis on tradeoffs between conducting-state resistance, non-conducting state capacitance and power handling. Switching frequency figure-of-merit values between 200 and 400 GHz have been achieved with 1 watt power handling capability.","PeriodicalId":109161,"journal":{"name":"1986 IEEE MTT-S International Microwave Symposium Digest","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1986-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127267094","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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