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Experimental and Numerical Simulation Frequency Characteristics of L-Shaped Waveguide-Slot Membranes Bandpass Filters

Authors: Kopylova, Natalia A.; Kopylov, Alexei F.; Ogorodnikov, Dmitri K.; Nesterov, Denis A;

Experimental and Numerical Simulation Frequency Characteristics of L-Shaped Waveguide-Slot Membranes Bandpass Filters

Abstract

В статье представлены результаты экспериментального исследования и численного моделирования амплитудно-частотных характеристик (АЧХ) коэффициента передачи напряжения |Ku| и частотных характеристик коэффициента стоячей волны по напряжению со входа (входной КСВН) для трех полосовых фильтров, выполненных на волноводно-щелевых мембранах (ВЩМ) с Г-образной резонансной щелью: однокаскадного, трехкаскадного, и четырехкаскадного. В статье приведены конструкции фильтров. Результаты численного моделирования и экспериментальных исследований показывают, что в диапазоне частот 5...8,5 ГГц фильтры обеспечивают затухание за полосой пропускания до 30 дБ при уровне вносимых потерь в полосе пропускания от 0,2 до 1 дБ. Значения расчетного и экспериментального входных КСВН в полосе пропускания фильтра составляют от 1,1 до 1,74 относительных единиц (о. е.) а в диапазонах задерживания – от 2 до 300 о. е. Авторы полагают, что использование волноводно-щелевых мембран позволит значительно уменьшить габаритные размеры СВЧ полосно-пропускающих и полосно-заграждающих фильтров в середине сантиметрового диапазона длин волн

The article presents the results of experimental research and numerical simulation of the amplitude-frequency characteristics (AFC) of the voltage transmission ratio (voltage gain) |Ku| and frequency characteristics of the voltage standing wave ratio from the input (input VSWR) to three bandpass filters on the waveguide-slot membranes (WSM) with L-shaped resonance slot: to the single stage, to the three stages and to the four stages. The filter designs are given in article. The results of numerical simulation and experimental study show that in the frequency range 5,0...8,5 GHz filters provide attenuation behind the pass band up to 30 dB at the level of the introduced losses in the pass-band from 0,2 to 1,0 dB. The values of the calculated and experimental input VSWR in the filter bandwidth of pass-band are from 1,1 to 1,74 relative units (r. u.) and in the stop bands from 2 to 300 r. u. The authors believe that using of waveguide-slot membranes will significantly reduce the overall dimensions of microwave bandpass and bandstop filters in the middle of the centimeter wavelength range

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Keywords

47.41.29, L-shaped resonant slot, Г-образная резонансная щель, волноводно-щелевая мембрана (ВЩМ), bandpass filter, waveguide-slot membranes (WSM), полосно-пропускающий фильтр, 620

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
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