Open AccessМикрополосковые фильтры с широкими полосами пропускания
Author(s) -
Б.А. Беляев,
С.А. Ходенков,
И.В. Говорун,
А.М. Сержантов
Publication year - 2021
Publication title -
pisʹma v žurnal tehničeskoj fiziki
Language(s) - English
Resource type - Journals
eISSN - 1726-7471
pISSN - 0320-0116
DOI - 10.21883/pjtf.2021.07.50796.18581
Subject(s) - passband , band pass filter , bandwidth (computing) , microstrip , prototype filter , materials science , fractional bandwidth , filter (signal processing) , acoustics , electronic engineering , m derived filter , low pass filter , physics , computer science , telecommunications , engineering , electrical engineering
New microstrip designs of bandpass filters based on a low-pass filter was developed. Several or all the sections of high-impedance microstrip lines of the designed filters were connected to the ground by stubs. The filters have high frequency-selective properties, and their fractional bandwidths are in the range of 30 % –150 %. An experimental sample of a filter with a 2 GHz central frequency of the passband and 70% fractional bandwidth was made on an alumina substrate 1 mm thick. The filter has a substrate area of 46 × 21 mm2. Good agreement of the measured frequency response of the filter with the characteristics calculated by the numerical electrodynamic analysis of its 3D model was shown.