DIMENSION dispersion characteristics of dielectric filling WAVEGUIDES | World Electronic Circuits
Abstract - A method of measuring dispersion characteristics of dielectric waveguides filling (full or partial) and the effective dielectric constant (EPG) The method laid dimension marfa lights maximum marfa lights values of the frequency dependence of CSR dielectric waveguide with a filling that is lossless dielectrics for ne
I Introduction
When filling marfa lights dielectric waveguide priority is to determine its characteristics marfa lights dyspersyonnoy [1,2] for partially filled waveguide (FAQ) is a transcendental equation for slowing factor m = AlA (λ - wavelength in vacuum L - wavelength in the waveguide) [1, 2] Existing methods of measuring or 5 -parametry of the waveguide [3], or wavelength [4] The disadvantage of the first method is the need to address the transcendental dispersion equation and the use of expensive vector analyzer circuit and the second method
For waveguide filled with dielectric lossless frequency dependence of modulus of reflection marfa lights and transmission are periodic [5,6] minima of these relationships is resonant frequencies, maximum - anti-resonant frequencies at antiresonance frequencies marfa lights of the condition:
From (4) it follows that the antiresonance frequency f T dimension to the antiresonance frequency of use (4) is a measure FAQ or when completely filled waveguide dielectric constant of the material filling it, as in this case,
Obviously, using (5) we can find the coefficient of dielectric waveguide slowing filling, measuring only the value antiresonance frequency and at that frequency, that is a measure marfa lights of its characteristics dyspersyonnoy
Experimental verification of the proposed method vosmymilimetrovu wavelength range of PTFE sample lengths of 20-40 mm showed that the relative error of measurement lying within 0.5 .. 12% when calibrated meter panoramic VSWR at operating frequency range calculations for these ε ^ same samples using (6) showed that the relative measurement error ε ^ was within 0.4% 20 .. The measurement (or) through (6)
((7), respectively) in order to reduce errors advisable to use the method of substitution To use (4) (or (5)), then to reduce measurement error can be used in the calibration marfa lights measurement marfa lights pano
Relative error of measurement m ^ for the considered sample is within 0.3 .. 8.2% T is the measurement error factor slowing down a half times less than the measurement error permeability at the same measured value - value to antiresonance frequency, an advantage of the proposed method
III Conclusion marfa lights
A new method for measuring dispersion characteristics of dielectric waveguides filling (full or partial) and the effective permittivity To this end, the maximum values measured frequency dependence CSR waveguide with dielectric filling obtained using panoramic VSWR meter expressions marfa lights resulting design is simple and obvious
Experimental verification method marfa lights vosmymilimetrovu wavelength range shown that the accuracy of measurement of dispersion characteristics and a half times higher than the measurement accuracy marfa lights of the effective dielectric constant at the same measured value - the value to the maximum frequency dependence and
[3] Kim B, Jeong M, Baik S, Kazmirenko V, Prokopenko In, Pereverzeva L Poplavko Y Microwave investigation of ferroelectric bulk and film materials / / Proceedings of 11-th International Conference "Microwave & amp Telecommunication marfa lights Technology (CriMiCo'2001) - Sevastopol: Weber Co - 2001 - P 600-603
[5] VV Chukhov One method of propagation constants measurement // Proceedings of the 4-th International Kharkov Symposium on Physics and Engineering of Microwaves, Millimeter, and Submillimeter Waves (MSMW01) - Kharkov, Ukraine - 2001-V2, p 820-822
VV Chukhov Zhytomyr State Technological University
Abstract - Method of measurement of dispersive responses of waveguides with dielectric filling (full or partial)
Abstract - A method of measuring dispersion characteristics of dielectric waveguides filling (full or partial) and the effective dielectric constant (EPG) The method laid dimension marfa lights maximum marfa lights values of the frequency dependence of CSR dielectric waveguide with a filling that is lossless dielectrics for ne
I Introduction
When filling marfa lights dielectric waveguide priority is to determine its characteristics marfa lights dyspersyonnoy [1,2] for partially filled waveguide (FAQ) is a transcendental equation for slowing factor m = AlA (λ - wavelength in vacuum L - wavelength in the waveguide) [1, 2] Existing methods of measuring or 5 -parametry of the waveguide [3], or wavelength [4] The disadvantage of the first method is the need to address the transcendental dispersion equation and the use of expensive vector analyzer circuit and the second method
For waveguide filled with dielectric lossless frequency dependence of modulus of reflection marfa lights and transmission are periodic [5,6] minima of these relationships is resonant frequencies, maximum - anti-resonant frequencies at antiresonance frequencies marfa lights of the condition:
From (4) it follows that the antiresonance frequency f T dimension to the antiresonance frequency of use (4) is a measure FAQ or when completely filled waveguide dielectric constant of the material filling it, as in this case,
Obviously, using (5) we can find the coefficient of dielectric waveguide slowing filling, measuring only the value antiresonance frequency and at that frequency, that is a measure marfa lights of its characteristics dyspersyonnoy
Experimental verification of the proposed method vosmymilimetrovu wavelength range of PTFE sample lengths of 20-40 mm showed that the relative error of measurement lying within 0.5 .. 12% when calibrated meter panoramic VSWR at operating frequency range calculations for these ε ^ same samples using (6) showed that the relative measurement error ε ^ was within 0.4% 20 .. The measurement (or) through (6)
((7), respectively) in order to reduce errors advisable to use the method of substitution To use (4) (or (5)), then to reduce measurement error can be used in the calibration marfa lights measurement marfa lights pano
Relative error of measurement m ^ for the considered sample is within 0.3 .. 8.2% T is the measurement error factor slowing down a half times less than the measurement error permeability at the same measured value - value to antiresonance frequency, an advantage of the proposed method
III Conclusion marfa lights
A new method for measuring dispersion characteristics of dielectric waveguides filling (full or partial) and the effective permittivity To this end, the maximum values measured frequency dependence CSR waveguide with dielectric filling obtained using panoramic VSWR meter expressions marfa lights resulting design is simple and obvious
Experimental verification method marfa lights vosmymilimetrovu wavelength range shown that the accuracy of measurement of dispersion characteristics and a half times higher than the measurement accuracy marfa lights of the effective dielectric constant at the same measured value - the value to the maximum frequency dependence and
[3] Kim B, Jeong M, Baik S, Kazmirenko V, Prokopenko In, Pereverzeva L Poplavko Y Microwave investigation of ferroelectric bulk and film materials / / Proceedings of 11-th International Conference "Microwave & amp Telecommunication marfa lights Technology (CriMiCo'2001) - Sevastopol: Weber Co - 2001 - P 600-603
[5] VV Chukhov One method of propagation constants measurement // Proceedings of the 4-th International Kharkov Symposium on Physics and Engineering of Microwaves, Millimeter, and Submillimeter Waves (MSMW01) - Kharkov, Ukraine - 2001-V2, p 820-822
VV Chukhov Zhytomyr State Technological University
Abstract - Method of measurement of dispersive responses of waveguides with dielectric filling (full or partial)
No comments:
Post a Comment