Pub Date : 1985-06-04DOI: 10.1109/MWSYM.1985.1131990
C. C. Leung, C. Snapp, V. Grande
An interdigitated silicon bipolar transistor with 0.5 micrometer emitter width and 2 micrometer emitter-emitter pitch has been fabricated which has a measured Fmax greater than 30 GHz. Low phase noise YIG-tuned oscillators with fundamental frequency bands of 4-18 and 8-22 GHz have been demonstrated using this transistor.
{"title":"A 0.5 µm Silicon Bipolar Transistor for Low Phase Noise Oscillator Applications Up to 20 GHz","authors":"C. C. Leung, C. Snapp, V. Grande","doi":"10.1109/MWSYM.1985.1131990","DOIUrl":"https://doi.org/10.1109/MWSYM.1985.1131990","url":null,"abstract":"An interdigitated silicon bipolar transistor with 0.5 micrometer emitter width and 2 micrometer emitter-emitter pitch has been fabricated which has a measured Fmax greater than 30 GHz. Low phase noise YIG-tuned oscillators with fundamental frequency bands of 4-18 and 8-22 GHz have been demonstrated using this transistor.","PeriodicalId":446741,"journal":{"name":"1985 IEEE MTT-S International Microwave Symposium Digest","volume":"56 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1985-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121158467","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 : 1985-06-04DOI: 10.1109/MWSYM.1985.1131907
Y. Takahashi, Y. Nikawa, T. Katsumata, S. Mori, M. Nakagawa, M. Kikuchi
A new type applicator for microwave hyperthermia operated at 433 MHz is proposed. This applicator, which is a waveguide array type, has a convergent effect of the electromagnetic field radiated from the applicator, and focal length of can be changeable. The electric field distributions in the model of human tissues from the aperture of the applicator were measured, and the simulation of temperature distributions was performed in the model heated with the applicator.
{"title":"Direct Contact Applicator with Convergent Effect of EM Field for Microwave Hypertrermia","authors":"Y. Takahashi, Y. Nikawa, T. Katsumata, S. Mori, M. Nakagawa, M. Kikuchi","doi":"10.1109/MWSYM.1985.1131907","DOIUrl":"https://doi.org/10.1109/MWSYM.1985.1131907","url":null,"abstract":"A new type applicator for microwave hyperthermia operated at 433 MHz is proposed. This applicator, which is a waveguide array type, has a convergent effect of the electromagnetic field radiated from the applicator, and focal length of can be changeable. The electric field distributions in the model of human tissues from the aperture of the applicator were measured, and the simulation of temperature distributions was performed in the model heated with the applicator.","PeriodicalId":446741,"journal":{"name":"1985 IEEE MTT-S International Microwave Symposium Digest","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1985-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121421795","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 : 1985-06-04DOI: 10.1109/MWSYM.1985.1132056
H. Shigesawa, M. Tsuji, K. Takiyama
A network approach is proposed for analyzing the interaction of discontinuities in open dielectric waveguides by taking account of the continuous spectrum accurately. This approach develops an unprecedented method to investigate the effect of finite length of periodic structures on their transmission characteristics. This paper discusses this effect on the radiation patterns when a finite periodic structure is operated in the leaky wave region, while in a different regime of operation, we present a new and completely theoretical accurate procedure for the design of grating filters on a dielectric image waveguide, demonstrating successful experiments.
{"title":"Microwave Network Representation of Discontinuity in Open Dielectric Waveguides and its Applications to Periodic Structures","authors":"H. Shigesawa, M. Tsuji, K. Takiyama","doi":"10.1109/MWSYM.1985.1132056","DOIUrl":"https://doi.org/10.1109/MWSYM.1985.1132056","url":null,"abstract":"A network approach is proposed for analyzing the interaction of discontinuities in open dielectric waveguides by taking account of the continuous spectrum accurately. This approach develops an unprecedented method to investigate the effect of finite length of periodic structures on their transmission characteristics. This paper discusses this effect on the radiation patterns when a finite periodic structure is operated in the leaky wave region, while in a different regime of operation, we present a new and completely theoretical accurate procedure for the design of grating filters on a dielectric image waveguide, demonstrating successful experiments.","PeriodicalId":446741,"journal":{"name":"1985 IEEE MTT-S International Microwave Symposium Digest","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1985-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115460798","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 : 1985-06-04DOI: 10.1109/MWSYM.1985.1131962
P. Ikalainen, G. Matthaei, D. Park, M. Wei
Techniques for the design of band-pass filters using dielectric waveguide gratings are discussed. Direct-coupled-resonator filter theory is applied to synthesize a prescribed pass band having a Chebyshev or maximally flat characteristic, and at the same time a broad, absorptive stop band is provided through the use of parallel-coupled gratings. Experimental results are also presented which show good agreement between theoretical and measured results.
{"title":"Dielectric Waveguide Band-Pass Filters with Broad Stop Bands","authors":"P. Ikalainen, G. Matthaei, D. Park, M. Wei","doi":"10.1109/MWSYM.1985.1131962","DOIUrl":"https://doi.org/10.1109/MWSYM.1985.1131962","url":null,"abstract":"Techniques for the design of band-pass filters using dielectric waveguide gratings are discussed. Direct-coupled-resonator filter theory is applied to synthesize a prescribed pass band having a Chebyshev or maximally flat characteristic, and at the same time a broad, absorptive stop band is provided through the use of parallel-coupled gratings. Experimental results are also presented which show good agreement between theoretical and measured results.","PeriodicalId":446741,"journal":{"name":"1985 IEEE MTT-S International Microwave Symposium Digest","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1985-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115471025","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 : 1985-06-04DOI: 10.1109/MWSYM.1985.1132067
E. Niehenke, V. V. DiMarco, A. Friedberg
Design and performance of analog phase shifters using hyperabrupt varactors with linear phase versus voltage is presented. Phase linearity of 22 degrees per volt +-8 percent was achieved for a 100 degree S-band device with a phase deviation of 1 degree from linearity. At X-band, linear phase control of 270 degrees was achieved. The selection of the varactor diode capacitance versus voltage and matching circuits for linear performance are presented.
{"title":"Linear Analog Hyperabrupt Varactor Diode Phase Shifters","authors":"E. Niehenke, V. V. DiMarco, A. Friedberg","doi":"10.1109/MWSYM.1985.1132067","DOIUrl":"https://doi.org/10.1109/MWSYM.1985.1132067","url":null,"abstract":"Design and performance of analog phase shifters using hyperabrupt varactors with linear phase versus voltage is presented. Phase linearity of 22 degrees per volt +-8 percent was achieved for a 100 degree S-band device with a phase deviation of 1 degree from linearity. At X-band, linear phase control of 270 degrees was achieved. The selection of the varactor diode capacitance versus voltage and matching circuits for linear performance are presented.","PeriodicalId":446741,"journal":{"name":"1985 IEEE MTT-S International Microwave Symposium Digest","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1985-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115334666","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 : 1985-06-04DOI: 10.1109/MWSYM.1985.1131958
S. Fiedziuszko
A novel configuration of a stabilized FET oscillator is based on a dual mode dielectric resonator loaded cavity. Two orthogonal modes in such a cavity are utilized in a feedback loop as well as for additional output filtering. The principle of operation and experimental results are presented.
{"title":"Miniature FET Oscillator Stabilized by a Dual Mode Dielectric Resonator Loaded Cavity.","authors":"S. Fiedziuszko","doi":"10.1109/MWSYM.1985.1131958","DOIUrl":"https://doi.org/10.1109/MWSYM.1985.1131958","url":null,"abstract":"A novel configuration of a stabilized FET oscillator is based on a dual mode dielectric resonator loaded cavity. Two orthogonal modes in such a cavity are utilized in a feedback loop as well as for additional output filtering. The principle of operation and experimental results are presented.","PeriodicalId":446741,"journal":{"name":"1985 IEEE MTT-S International Microwave Symposium Digest","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1985-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115367269","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 : 1985-06-04DOI: 10.1109/MWSYM.1985.1131957
C. Schiebold
An approach to developing multi-octave GaAs-FET YIG-tuned oscillators is described. A short discussion of the theory is given, followed by a presentation of experimental results for a 3.5 to 19.5 GHz YIG-tuned oscillator.
{"title":"An Approach to Realizing Multi-Octave Performance in GaAs-FET YIG-Tuned Oscillators","authors":"C. Schiebold","doi":"10.1109/MWSYM.1985.1131957","DOIUrl":"https://doi.org/10.1109/MWSYM.1985.1131957","url":null,"abstract":"An approach to developing multi-octave GaAs-FET YIG-tuned oscillators is described. A short discussion of the theory is given, followed by a presentation of experimental results for a 3.5 to 19.5 GHz YIG-tuned oscillator.","PeriodicalId":446741,"journal":{"name":"1985 IEEE MTT-S International Microwave Symposium Digest","volume":"433 1-2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1985-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132606710","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 : 1985-06-04DOI: 10.1109/MWSYM.1985.1131936
K. P. Roy, J. Ku, I. Kaufman, S. Kalra
A simple microwave technique is described that measures the instantaneous local thickness of a film of liquid flowing down the inner wall of a tube while at the same time a cnrrent of gas flows in the opposite direction. Such a measurement technique is significant because of the extensive occurrence of such liquid/gas flows in chemical process and energy industries.
{"title":"Microwave Characterization of Liquid Films","authors":"K. P. Roy, J. Ku, I. Kaufman, S. Kalra","doi":"10.1109/MWSYM.1985.1131936","DOIUrl":"https://doi.org/10.1109/MWSYM.1985.1131936","url":null,"abstract":"A simple microwave technique is described that measures the instantaneous local thickness of a film of liquid flowing down the inner wall of a tube while at the same time a cnrrent of gas flows in the opposite direction. Such a measurement technique is significant because of the extensive occurrence of such liquid/gas flows in chemical process and energy industries.","PeriodicalId":446741,"journal":{"name":"1985 IEEE MTT-S International Microwave Symposium Digest","volume":"222 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1985-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132096432","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 : 1985-06-04DOI: 10.1109/MWSYM.1985.1132079
V. Rizzoli, A. Lipparini
The paper describes a new algorithm for computing the noise figure of a linear two-port network of arbitrary topology. The discussion is oriented towards CAD applications, making the approach easy to be implemented into any existing general-purpose analysis and/or design program. A few sample results are compared with measured data drawn from the technical literature.
{"title":"A CAD Solution to the Generalized Problem of Noise Figure Calculation","authors":"V. Rizzoli, A. Lipparini","doi":"10.1109/MWSYM.1985.1132079","DOIUrl":"https://doi.org/10.1109/MWSYM.1985.1132079","url":null,"abstract":"The paper describes a new algorithm for computing the noise figure of a linear two-port network of arbitrary topology. The discussion is oriented towards CAD applications, making the approach easy to be implemented into any existing general-purpose analysis and/or design program. A few sample results are compared with measured data drawn from the technical literature.","PeriodicalId":446741,"journal":{"name":"1985 IEEE MTT-S International Microwave Symposium Digest","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1985-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125317399","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 : 1985-06-04DOI: 10.1109/MWSYM.1985.1132036
M. Iwakuni, M. Niori, T. Saito, T. Hamabe, H. Kurihara, K. Jyoshin, M. Mikuni
A 20 GHz band 135 K (NF=1.66dB) low-noise HEMT amplifier with 38 dB gain has been developed. This was achieved by extremely low-loss input circuits, accurate device characterization method with a strip line tuner and a compact cooling system. The amplifier is cooled to -55°C by a Peltier-cooling unit which consumes only 60 watts.
研制了一种20 GHz频段135 K (NF=1.66dB)低噪声、增益38 dB的HEMT放大器。这是通过极低损耗的输入电路，精确的器件表征方法，带线调谐器和紧凑的冷却系统实现的。放大器被冷却到-55°C的珀尔提尔冷却装置，仅消耗60瓦。
{"title":"A 20 GHz Peltier-Cooled Low Noise HEMT Amplifier","authors":"M. Iwakuni, M. Niori, T. Saito, T. Hamabe, H. Kurihara, K. Jyoshin, M. Mikuni","doi":"10.1109/MWSYM.1985.1132036","DOIUrl":"https://doi.org/10.1109/MWSYM.1985.1132036","url":null,"abstract":"A 20 GHz band 135 K (NF=1.66dB) low-noise HEMT amplifier with 38 dB gain has been developed. This was achieved by extremely low-loss input circuits, accurate device characterization method with a strip line tuner and a compact cooling system. The amplifier is cooled to -55°C by a Peltier-cooling unit which consumes only 60 watts.","PeriodicalId":446741,"journal":{"name":"1985 IEEE MTT-S International Microwave Symposium Digest","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1985-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125284030","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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