Pub Date : 1986-06-02DOI: 10.1109/MWSYM.1986.1132160
K. Zaki, Chunming Chen
A method for calculation of the coupling of a dielectric loaded resonator to a rectangular waveguide by means of a long thin slot is presented. Experimental measurements performed on several cases are compared to the calculations. Effect of the resonator's field variation on the coupling calculations are discussed. It is shown that the small aperture theory fails to predict the coupling coefficient variation as a function of the slot length. The actual (measured) variation is predicted properly by taking into account the field distribution in the resonator.
{"title":"Coupling of Dielectric Resonators to Rectangular Waveguides","authors":"K. Zaki, Chunming Chen","doi":"10.1109/MWSYM.1986.1132160","DOIUrl":"https://doi.org/10.1109/MWSYM.1986.1132160","url":null,"abstract":"A method for calculation of the coupling of a dielectric loaded resonator to a rectangular waveguide by means of a long thin slot is presented. Experimental measurements performed on several cases are compared to the calculations. Effect of the resonator's field variation on the coupling calculations are discussed. It is shown that the small aperture theory fails to predict the coupling coefficient variation as a function of the slot length. The actual (measured) variation is predicted properly by taking into account the field distribution in the resonator.","PeriodicalId":109161,"journal":{"name":"1986 IEEE MTT-S International Microwave Symposium Digest","volume":"5 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":"134473791","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.1986.1132240
G. King, S. J. Flynn
An eight element phased array receiver operating in I/J band is presented. Both MMIC and MIC technologies are employed. Chip yield, electronic control, basic system operation and engineering configuration are discussed.
{"title":"A Combined MMIC/MIC 8-Channel Receive Only Phased Array Demonstrator Operating in I/J Band","authors":"G. King, S. J. Flynn","doi":"10.1109/MWSYM.1986.1132240","DOIUrl":"https://doi.org/10.1109/MWSYM.1986.1132240","url":null,"abstract":"An eight element phased array receiver operating in I/J band is presented. Both MMIC and MIC technologies are employed. Chip yield, electronic control, basic system operation and engineering configuration are discussed.","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":"114561148","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.1986.1132206
M. Makimoto, M. Sagawa
This paper describes the fundamental characteristics and experimental results of newly developed tunable bandpass filters using rnicrostrip-line ring resonators. The experimental filter has a steeper attenuation slope and less circuit instability than conventional filters, and it seems to be a suitable filter for MICs or MMICs.
{"title":"Varactor Tuned Bandpass Filters Using Microstrip-Line Ring Resonators","authors":"M. Makimoto, M. Sagawa","doi":"10.1109/MWSYM.1986.1132206","DOIUrl":"https://doi.org/10.1109/MWSYM.1986.1132206","url":null,"abstract":"This paper describes the fundamental characteristics and experimental results of newly developed tunable bandpass filters using rnicrostrip-line ring resonators. The experimental filter has a steeper attenuation slope and less circuit instability than conventional filters, and it seems to be a suitable filter for MICs or MMICs.","PeriodicalId":109161,"journal":{"name":"1986 IEEE MTT-S International Microwave Symposium Digest","volume":"54 95 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":"116143553","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.1986.1132302
F. Bardati, M. Mongiardo, D. Solimini, P. Tognolatti
This paper refers to the retrieval of two-dimensional thermal fields in biological bodies from multispectral microwave measurements by a scanning waveguide applicator. A formulation of the inverse radiometric problem suitable for a two-step solution (transverse deconvolution and profile retrieval) is outlined. The performance of the inversion procedure is tested by a numerical evaluation of the impulse response of the resulting algorithm.
{"title":"Biological Temperature Retrieval by Scanning Radiometry","authors":"F. Bardati, M. Mongiardo, D. Solimini, P. Tognolatti","doi":"10.1109/MWSYM.1986.1132302","DOIUrl":"https://doi.org/10.1109/MWSYM.1986.1132302","url":null,"abstract":"This paper refers to the retrieval of two-dimensional thermal fields in biological bodies from multispectral microwave measurements by a scanning waveguide applicator. A formulation of the inverse radiometric problem suitable for a two-step solution (transverse deconvolution and profile retrieval) is outlined. The performance of the inversion procedure is tested by a numerical evaluation of the impulse response of the resulting algorithm.","PeriodicalId":109161,"journal":{"name":"1986 IEEE MTT-S International Microwave Symposium Digest","volume":"3 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":"123118385","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.1986.1132170
M. Horno, F. Medina
One of the problems that appear in the directional couplers designed with coupled transmission lines embedded in nonhomogeneous medium is their poor directivity. In this work several multilayer configurations for high directivity coupler design are studied by means of a variational technique in the spectral domain, and a set of curves for an optimum design are included.
{"title":"Multilayer Planar Structures for High Directivity Directional Coupler Design","authors":"M. Horno, F. Medina","doi":"10.1109/MWSYM.1986.1132170","DOIUrl":"https://doi.org/10.1109/MWSYM.1986.1132170","url":null,"abstract":"One of the problems that appear in the directional couplers designed with coupled transmission lines embedded in nonhomogeneous medium is their poor directivity. In this work several multilayer configurations for high directivity coupler design are studied by means of a variational technique in the spectral domain, and a set of curves for an optimum design are included.","PeriodicalId":109161,"journal":{"name":"1986 IEEE MTT-S International Microwave Symposium Digest","volume":"3 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":"123035965","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.1986.1132203
J. Brand
A method for determining the coupling coefficients between dielectric resonators (DR) is presented. Experimentally measured S-parameters are used to characterize a circuit model of the DR. The DR's resonant frequency is systematically altered with a sliding short in the desired filter configuration and measured. This data is combined with the DR model utilizing equivalent circuit techniques to determine the coupling coefficient.
{"title":"A Simple Experimental Technique for Determining Coupling Between Dielectric Resonators","authors":"J. Brand","doi":"10.1109/MWSYM.1986.1132203","DOIUrl":"https://doi.org/10.1109/MWSYM.1986.1132203","url":null,"abstract":"A method for determining the coupling coefficients between dielectric resonators (DR) is presented. Experimentally measured S-parameters are used to characterize a circuit model of the DR. The DR's resonant frequency is systematically altered with a sliding short in the desired filter configuration and measured. This data is combined with the DR model utilizing equivalent circuit techniques to determine the coupling coefficient.","PeriodicalId":109161,"journal":{"name":"1986 IEEE MTT-S International Microwave Symposium Digest","volume":"23 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":"123663567","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.1986.1132253
R. Gilmore
The design of a wideband FET frequency doubler operating with a 4-8 GHz input bandwidth is described. The doubler and bandreject amplifier combination achieve an average conversion loss of 3.5 dB across the 8-16 GHz output band. The design method uses the harmonic balance algorithm implemented on an IBM PC-AT personal computer.
{"title":"Design of a Novel FET Frequency Doubler Using a Harmonic Balance Algorithm","authors":"R. Gilmore","doi":"10.1109/MWSYM.1986.1132253","DOIUrl":"https://doi.org/10.1109/MWSYM.1986.1132253","url":null,"abstract":"The design of a wideband FET frequency doubler operating with a 4-8 GHz input bandwidth is described. The doubler and bandreject amplifier combination achieve an average conversion loss of 3.5 dB across the 8-16 GHz output band. The design method uses the harmonic balance algorithm implemented on an IBM PC-AT personal computer.","PeriodicalId":109161,"journal":{"name":"1986 IEEE MTT-S International Microwave Symposium Digest","volume":"105 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":"122902706","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.1986.1132266
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.1986.1132214
D. Larson, D. E. Heckaman, J. A. Frisco, David A. Haskins
A set of low cost, microwave quality packages has been developed for use with both monolithic and hybrid integrated circuits. The packages are modeled after the common TO-style packages, thus allowing the use of an established, cost effective manufacturing base. They are plug-in packages, with pins on 0.100 inch spacings for easy insertion at higher levels . Test results of the TO-8 style package show better than 20 dB return loss through 15 GHz . Isolation between adjacent ports is greater than 50 dB. With package size varying from the small 0.300 inch diameter TO-5 can to the 1.000 inch diameter TO-3 can, applications requiring one GaAs chip, several cascaded chips, or an entire hybrid substrate can be accommodated. The low cost, high performance attributes of these packages make them ideal for high speed, high frequency subsystems.
{"title":"Low Cost to Packages for High Speed/Microwave Applications","authors":"D. Larson, D. E. Heckaman, J. A. Frisco, David A. Haskins","doi":"10.1109/MWSYM.1986.1132214","DOIUrl":"https://doi.org/10.1109/MWSYM.1986.1132214","url":null,"abstract":"A set of low cost, microwave quality packages has been developed for use with both monolithic and hybrid integrated circuits. The packages are modeled after the common TO-style packages, thus allowing the use of an established, cost effective manufacturing base. They are plug-in packages, with pins on 0.100 inch spacings for easy insertion at higher levels . Test results of the TO-8 style package show better than 20 dB return loss through 15 GHz . Isolation between adjacent ports is greater than 50 dB. With package size varying from the small 0.300 inch diameter TO-5 can to the 1.000 inch diameter TO-3 can, applications requiring one GaAs chip, several cascaded chips, or an entire hybrid substrate can be accommodated. The low cost, high performance attributes of these packages make them ideal for high speed, high frequency subsystems.","PeriodicalId":109161,"journal":{"name":"1986 IEEE MTT-S International Microwave Symposium Digest","volume":"72 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":"126132850","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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