Open AccessEvaluating the influence of the magnetic permeability of the microstrip modal filter substrate on its frequency characteristics
Author(s) -
Evgeniya B. Chernikova,
Alexey A. Kvasnikov,
A. M. Zabolotsky,
S. P. Kuksenko
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1611/1/012032
Subject(s) - modal , permeability (electromagnetism) , microstrip , materials science , bandwidth (computing) , acoustics , filter (signal processing) , relative permeability , band pass filter , electronic engineering , composite material , physics , engineering , telecommunications , chemistry , electrical engineering , porosity , biochemistry , membrane
This paper considers the possibility of improving the characteristics of modal filters by using composite materials with a relative magnetic permeability of μ r >1. The influence of the magnetic permeability of the microstrip modal filter substrate on its frequency characteristics is investigated. The paper presents the frequency dependences | S 21 | of the filter with lengths l =1, 0.5, and 0.2 m and with μ r = 1, 4, 7, and 10. It is shown that the increase of the the μ r value leads to a decrease in the filter bandwidth.