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.1986.1132253
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.1986.1132302
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.1986.1132135
P. Park, R. Eisenhart, S. Bradshaw
A design method for matching a square waveguide right angle corner for both E & H-plane (TE/sub 10/ and TE/sub 01/ modes) operation is presented. Results show VSWR <1.05 for 1.0 GHz bandwidth at X-Band with mode-to-mode isolation >30 dB.
{"title":"Matched, Dual Mode Square Waveguide Corner","authors":"P. Park, R. Eisenhart, S. Bradshaw","doi":"10.1109/MWSYM.1986.1132135","DOIUrl":"https://doi.org/10.1109/MWSYM.1986.1132135","url":null,"abstract":"A design method for matching a square waveguide right angle corner for both E & H-plane (TE/sub 10/ and TE/sub 01/ modes) operation is presented. Results show VSWR <1.05 for 1.0 GHz bandwidth at X-Band with mode-to-mode isolation >30 dB.","PeriodicalId":109161,"journal":{"name":"1986 IEEE MTT-S International Microwave Symposium Digest","volume":"29 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":"125021698","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.1986.1132221
M. Sholley, A. Nichols
This paper describes the design and development of 60 and 70 GHz High Electron Mobility Transistor (HEMT) amplifiers. The 60 GHz amplifier exhibited a gain of 4.5 to 6.5 dB across the frequency band 56 to 62 GHz and had an associated noise figure of 6.0 dB measured at 57.5 GHz. The 72 GHz amplifier achieved a gain of 4 to 5 dB with a bandwidth of 2.5 GHz, with an associated noise figure of 7.8 measured at 71.0 GHz.
{"title":"60 and 70 GHz (HEMT) Amplifiers","authors":"M. Sholley, A. Nichols","doi":"10.1109/MWSYM.1986.1132221","DOIUrl":"https://doi.org/10.1109/MWSYM.1986.1132221","url":null,"abstract":"This paper describes the design and development of 60 and 70 GHz High Electron Mobility Transistor (HEMT) amplifiers. The 60 GHz amplifier exhibited a gain of 4.5 to 6.5 dB across the frequency band 56 to 62 GHz and had an associated noise figure of 6.0 dB measured at 57.5 GHz. The 72 GHz amplifier achieved a gain of 4 to 5 dB with a bandwidth of 2.5 GHz, with an associated noise figure of 7.8 measured at 71.0 GHz.","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":"131957076","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.1986.1132176
R. Harrison, W. Cornish
A one-and-one-third-octave frequency halver has been developed to accommodate the 7-18 GHz input band, the widest bandwidth yet reported. Dynamic range capabilities of varactor halvers can be increased from 7 dB to about 20 dB by means of a novel "sliding bias" circuit.
{"title":"Varactor Frequency Halvers with Enhanced Bandwidth and Dynamic Range","authors":"R. Harrison, W. Cornish","doi":"10.1109/MWSYM.1986.1132176","DOIUrl":"https://doi.org/10.1109/MWSYM.1986.1132176","url":null,"abstract":"A one-and-one-third-octave frequency halver has been developed to accommodate the 7-18 GHz input band, the widest bandwidth yet reported. Dynamic range capabilities of varactor halvers can be increased from 7 dB to about 20 dB by means of a novel \"sliding bias\" circuit.","PeriodicalId":109161,"journal":{"name":"1986 IEEE MTT-S International Microwave Symposium Digest","volume":"147 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":"133947309","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.1986.1132282
P. Katehi, L. Dunleavy
A numerical technique for the design of parallel-coupled bandpass microstrip filters is discussed. The method accounts accurately for the dispersion effects due to the presence of the substrate, the associated surface wave propagation and radiation losses. The presented technique does not have any frequency limitations and can be applied to various microstrip filters. Comparison with experimental results shows excellent agreement.
{"title":"Microstrip Filter Design Including Dispersion Effects and Radiation Losses","authors":"P. Katehi, L. Dunleavy","doi":"10.1109/MWSYM.1986.1132282","DOIUrl":"https://doi.org/10.1109/MWSYM.1986.1132282","url":null,"abstract":"A numerical technique for the design of parallel-coupled bandpass microstrip filters is discussed. The method accounts accurately for the dispersion effects due to the presence of the substrate, the associated surface wave propagation and radiation losses. The presented technique does not have any frequency limitations and can be applied to various microstrip filters. Comparison with experimental results shows excellent agreement.","PeriodicalId":109161,"journal":{"name":"1986 IEEE MTT-S International Microwave Symposium Digest","volume":"45 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":"116923501","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.1986.1132203
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}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：