TY - JOUR
T1 - Study on the Effect of the Feedline Inductance in Wideband Tunable Band Pass Combline Filters
AU - Mousavi, Seyedmostafa
AU - Meiguni, Javad
AU - Pommerenke, David Johannes
PY - 2022/2/15
Y1 - 2022/2/15
N2 - This letter proposes a novel analysis and design method of a continuously adjustable bandpass combline filter. It investigates the feedline design specifications and introduces an external quality factor (Qext) tuning structure to achieve a constant fractional bandwidth over 60% tuning bandwidth. The design approach allows to determine the optimum feedline structure for the filter and is verified by full-wave simulation and measurement. The results show a constant fractional bandwidth of 4.5% over the entire operating frequency range between 225-400 MHz.
AB - This letter proposes a novel analysis and design method of a continuously adjustable bandpass combline filter. It investigates the feedline design specifications and introduces an external quality factor (Qext) tuning structure to achieve a constant fractional bandwidth over 60% tuning bandwidth. The design approach allows to determine the optimum feedline structure for the filter and is verified by full-wave simulation and measurement. The results show a constant fractional bandwidth of 4.5% over the entire operating frequency range between 225-400 MHz.
U2 - 10.2528/PIERL22011304
DO - 10.2528/PIERL22011304
M3 - Article
SN - 1937-6480
VL - 103
SP - 25
EP - 30
JO - Progress In Electromagnetics Research Letters
JF - Progress In Electromagnetics Research Letters
ER -