DocumentCode :
2382085
Title :
New type of microwave resonator sensors with waveguide below cut-off
Author :
Galwas, B.A. ; Piotrowski, J.K. ; Skulski, J.
Author_Institution :
Inst. of Microelectron. & Optoelectron., Warsaw Univ. of Technol., Poland
fYear :
1996
fDate :
17-21 June 1996
Firstpage :
76
Lastpage :
77
Abstract :
A model of a quarter-wavelength coaxial resonator opened to a semi-infinite circular waveguide below cut-off is presented. A full-wave analysis of the transition between coaxial-line and circular waveguide was used. The analysis was based on a mode-matching formulation. The circular waveguide is filled by a dielectric material. As a consequence, the parameters of resonator: resonance frequency, quality factor, resonance transmission change in relation to the permittivity of the material. The fully automated microwave system was developed and used for measurements of low-loss and high-loss dielectric materials permittivity. Good agreement between theoretical calculations and results of measurements were obtained.
Keywords :
circular waveguides; coaxial cables; computerised instrumentation; electric sensing devices; microwave measurement; permittivity measurement; automated microwave system; circular waveguide; coaxial-line; cut-off; full-wave analysis; high-loss dielectric materials permittivity; low-loss; microwave resonator sensors; mode-matching formulation; model; quality factor; quarter-wavelength coaxial resonator; resonance frequency; resonance transmission; semiinfinite circular waveguide; waveguide below cut-off; Coaxial components; Dielectric materials; Dielectric measurements; Microwave measurements; Microwave sensors; Permittivity measurement; Q factor; Resonance; Resonant frequency; Waveguide transitions;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Precision Electromagnetic Measurements Digest, 1996 Conference on
Conference_Location :
Braunschweig, Germany
Print_ISBN :
0-7803-3376-4
Type :
conf
DOI :
10.1109/CPEM.1996.546623
Filename :
546623
Link To Document :
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