Pub Date : 1983-09-01DOI: 10.1109/EUMA.1983.333284
I. Gosling
A novel frequency discriminator using a dielectric resonator is described, for use at frequencies circa 30GHz. The circuit achieves excellent temperature stability (< 6ppm/deg C) at very low unit cost, and overcomes the need to use two closely tuned resonance modes. It is useful in particular for automatic frequency control (AFC) of mm-wave oscillators, and is suitable for inclusion with other functions in a microwave integrated circuit. The resonator puck is bonded by a novel technique giving very low additional loss, unlike the use of epoxies.
{"title":"Mm-Wave Dielectric Resonator AFC Discriminator","authors":"I. Gosling","doi":"10.1109/EUMA.1983.333284","DOIUrl":"https://doi.org/10.1109/EUMA.1983.333284","url":null,"abstract":"A novel frequency discriminator using a dielectric resonator is described, for use at frequencies circa 30GHz. The circuit achieves excellent temperature stability (< 6ppm/deg C) at very low unit cost, and overcomes the need to use two closely tuned resonance modes. It is useful in particular for automatic frequency control (AFC) of mm-wave oscillators, and is suitable for inclusion with other functions in a microwave integrated circuit. The resonator puck is bonded by a novel technique giving very low additional loss, unlike the use of epoxies.","PeriodicalId":105436,"journal":{"name":"1983 13th European Microwave Conference","volume":"106 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1983-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115636416","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 : 1983-09-01DOI: 10.1109/EUMA.1983.333203
J. Brain, P. Langsford
The practical description and theoretical basis of an outdoor, transportable, cylindrical near field antenna test facility is presented. The fully automated system makes small demands upon overall test time, computer storage and processing time. Its prime purpose is for radiation pattern testing of large L-Band radar antennas.
{"title":"Near Field Radar Antenna Testing","authors":"J. Brain, P. Langsford","doi":"10.1109/EUMA.1983.333203","DOIUrl":"https://doi.org/10.1109/EUMA.1983.333203","url":null,"abstract":"The practical description and theoretical basis of an outdoor, transportable, cylindrical near field antenna test facility is presented. The fully automated system makes small demands upon overall test time, computer storage and processing time. Its prime purpose is for radiation pattern testing of large L-Band radar antennas.","PeriodicalId":105436,"journal":{"name":"1983 13th European Microwave Conference","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1983-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129669230","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 : 1983-09-01DOI: 10.1109/EUMA.1983.333236
T. Shima, T. Takano, T. Katoh, H. Sugawara, H. Komizo
Multiplier chains for 20/30 GHz bands were developed using two-stage GaAs MESFET doublers. They provide 11 dBm output power with 4 dB gain at 18 GHz and 4 dBm output power with 5 dB loss at 30 GHz. Circuit design and FM noise characteristics will also be described.
{"title":"Circuit Design and FM Noise Characteristics of 20/30 GHz GaAs MESFET Multiplier Chains","authors":"T. Shima, T. Takano, T. Katoh, H. Sugawara, H. Komizo","doi":"10.1109/EUMA.1983.333236","DOIUrl":"https://doi.org/10.1109/EUMA.1983.333236","url":null,"abstract":"Multiplier chains for 20/30 GHz bands were developed using two-stage GaAs MESFET doublers. They provide 11 dBm output power with 4 dB gain at 18 GHz and 4 dBm output power with 5 dB loss at 30 GHz. Circuit design and FM noise characteristics will also be described.","PeriodicalId":105436,"journal":{"name":"1983 13th European Microwave Conference","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1983-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127665920","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 : 1983-09-01DOI: 10.1109/EUMA.1983.333194
J. Perez, G. Gonzalez, V. Ortega
Several Xand Ku-bandfilters using dielectric resonators in microstrip-line circuit configuration have been designed and measured obtaining good results. A monomodefilter in the TE01¿ centered in 11,6 GHzwith a 150 MHzband has been realized. Then, a theory for multimode design is presented, obtaining a mode-chart that allows theoretical prediction and approximate filter design. A second three-pole Chebyshev filter using TE01¿ and TM21¿ modes was constructed obtaining 240 MHz bandwith. Finally, a third four-pole filter has been designed and measured, obtaining a 500 MHz bandwith centered in 12,25 GHz.
{"title":"Design and Construction of Monomode and Multimode Microwave Filters with Dielectric Resonator","authors":"J. Perez, G. Gonzalez, V. Ortega","doi":"10.1109/EUMA.1983.333194","DOIUrl":"https://doi.org/10.1109/EUMA.1983.333194","url":null,"abstract":"Several Xand Ku-bandfilters using dielectric resonators in microstrip-line circuit configuration have been designed and measured obtaining good results. A monomodefilter in the TE01¿ centered in 11,6 GHzwith a 150 MHzband has been realized. Then, a theory for multimode design is presented, obtaining a mode-chart that allows theoretical prediction and approximate filter design. A second three-pole Chebyshev filter using TE01¿ and TM21¿ modes was constructed obtaining 240 MHz bandwith. Finally, a third four-pole filter has been designed and measured, obtaining a 500 MHz bandwith centered in 12,25 GHz.","PeriodicalId":105436,"journal":{"name":"1983 13th European Microwave Conference","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1983-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127869591","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 : 1983-09-01DOI: 10.1109/EUMA.1983.333220
A. Omar, K. Schunemann
The potentials of various slot patterns for realizing fin-line bandstop filters are discussed. Filters utilizing a double-slot fin-line, and a hybrid structure are designed and realized.
讨论了实现鳍线带阻滤波器的各种槽型的潜力。设计并实现了采用双槽鳍线和混合结构的滤波器。
{"title":"Realizations and Design of Fin-Line Bandstop Filters","authors":"A. Omar, K. Schunemann","doi":"10.1109/EUMA.1983.333220","DOIUrl":"https://doi.org/10.1109/EUMA.1983.333220","url":null,"abstract":"The potentials of various slot patterns for realizing fin-line bandstop filters are discussed. Filters utilizing a double-slot fin-line, and a hybrid structure are designed and realized.","PeriodicalId":105436,"journal":{"name":"1983 13th European Microwave Conference","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1983-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122966502","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 : 1983-09-01DOI: 10.1109/EUMA.1983.333278
E. Nagata, M. Mizumura, I. Haga
A 26GHz-band IMPATT direct oscillator frequency modulator stabilized with a dielectric resonator has been developed. The developed frequency modulator consists of MIC, presenting great potentials for reduction in device size and cost. The frequency modulator incorporating two MIC isolators provides an output power exceeding +23dBm, a frequency stability of within ±l×l0¿4 over a ¿10°C to +50°C range, a DG of less than 1% over a ±8MHz-range, and a phase noise of better than 72dBc/Hz at a frequency 10 kHz apart from the carrier frequency. The frequency modulator thus developed will sufficiently be applicable to FM transmitters in mi1limeter wave radio communication systems.
{"title":"26GHz IMPATT Frequency Modulator Stabilized with a Dielectric Resonator","authors":"E. Nagata, M. Mizumura, I. Haga","doi":"10.1109/EUMA.1983.333278","DOIUrl":"https://doi.org/10.1109/EUMA.1983.333278","url":null,"abstract":"A 26GHz-band IMPATT direct oscillator frequency modulator stabilized with a dielectric resonator has been developed. The developed frequency modulator consists of MIC, presenting great potentials for reduction in device size and cost. The frequency modulator incorporating two MIC isolators provides an output power exceeding +23dBm, a frequency stability of within ±l×l0¿4 over a ¿10°C to +50°C range, a DG of less than 1% over a ±8MHz-range, and a phase noise of better than 72dBc/Hz at a frequency 10 kHz apart from the carrier frequency. The frequency modulator thus developed will sufficiently be applicable to FM transmitters in mi1limeter wave radio communication systems.","PeriodicalId":105436,"journal":{"name":"1983 13th European Microwave Conference","volume":"68 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1983-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131760532","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 : 1983-09-01DOI: 10.1109/EUMA.1983.333323
J. Boukamp, R. Jansen
Some considerations concerning the spectral domain computation of microstrip lines and disk resonators including surface wave excitation and radiation are performed. Numerical results are presented for some representative covered and open configurations and are discussed with respect to the effective physical mechanisms.
{"title":"Spectral Domain Investigation of Surface Wave Excitation and Radiation by Microstrip Lines and Microstrip Disk Resonators","authors":"J. Boukamp, R. Jansen","doi":"10.1109/EUMA.1983.333323","DOIUrl":"https://doi.org/10.1109/EUMA.1983.333323","url":null,"abstract":"Some considerations concerning the spectral domain computation of microstrip lines and disk resonators including surface wave excitation and radiation are performed. Numerical results are presented for some representative covered and open configurations and are discussed with respect to the effective physical mechanisms.","PeriodicalId":105436,"journal":{"name":"1983 13th European Microwave Conference","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1983-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133439750","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 : 1983-09-01DOI: 10.1109/EUMA.1983.333324
I. Lindell, E. Alanen
The classical Sommerfeld problem of a vertical magnetic dipole above a planar interface of two dielectric and possibly lossy media is considered in terms of image principles. It is shown that an exact continuous image can be constructed in closed form, which totally lies in complex space. Unlike all previous image theories, being exact, the present theory can be applied for any distance, height of the source and parameters of the half space. It is demonstrated that the well-known dipole image at complex depth and reflection coefficient method both are special cases of the present method. The significance of the exact image theory lies in better convergence of field integrals over the classical Sommerfeld integrals.
{"title":"Exact Image Theory for the Sommerfeld Half-Space Problem with a Vertical Magnetic Dipole","authors":"I. Lindell, E. Alanen","doi":"10.1109/EUMA.1983.333324","DOIUrl":"https://doi.org/10.1109/EUMA.1983.333324","url":null,"abstract":"The classical Sommerfeld problem of a vertical magnetic dipole above a planar interface of two dielectric and possibly lossy media is considered in terms of image principles. It is shown that an exact continuous image can be constructed in closed form, which totally lies in complex space. Unlike all previous image theories, being exact, the present theory can be applied for any distance, height of the source and parameters of the half space. It is demonstrated that the well-known dipole image at complex depth and reflection coefficient method both are special cases of the present method. The significance of the exact image theory lies in better convergence of field integrals over the classical Sommerfeld integrals.","PeriodicalId":105436,"journal":{"name":"1983 13th European Microwave Conference","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1983-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133473428","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 : 1983-09-01DOI: 10.1109/EUMA.1983.333271
B. Vowinkel, K. Gruner, H. Suss, W. Reinert
A high-resolution airborne imaging system has been developed that uses cryogenic receiver modules at 90 and 140 GHz. They consist of Schottky-barrier mixers followed by GaAs-FET IF amplifiers. The DSB receiver noise temperatures are 210 K for the 90 GHz and 250 K for the 140 GHz system. The instantaneous bandwidth is 2.5 GHz for both front-ends. Results of some flight tests are presented.
{"title":"Airborne Imaging System using Cryogenic Receiver Modules at 90 and 140 GHz","authors":"B. Vowinkel, K. Gruner, H. Suss, W. Reinert","doi":"10.1109/EUMA.1983.333271","DOIUrl":"https://doi.org/10.1109/EUMA.1983.333271","url":null,"abstract":"A high-resolution airborne imaging system has been developed that uses cryogenic receiver modules at 90 and 140 GHz. They consist of Schottky-barrier mixers followed by GaAs-FET IF amplifiers. The DSB receiver noise temperatures are 210 K for the 90 GHz and 250 K for the 140 GHz system. The instantaneous bandwidth is 2.5 GHz for both front-ends. Results of some flight tests are presented.","PeriodicalId":105436,"journal":{"name":"1983 13th European Microwave Conference","volume":"22 4","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1983-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114030297","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 : 1983-09-01DOI: 10.1109/EUMA.1983.333267
R. Tiberio, G. Pelosi, G. Manara
{"title":"High Frequency Scattering from a Thick Screen with Impedance Faces","authors":"R. Tiberio, G. Pelosi, G. Manara","doi":"10.1109/EUMA.1983.333267","DOIUrl":"https://doi.org/10.1109/EUMA.1983.333267","url":null,"abstract":"","PeriodicalId":105436,"journal":{"name":"1983 13th European Microwave Conference","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1983-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121047831","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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