TY - JOUR
T1 - Miniature Triple-Mode Dielectric Resonator Filters
AU - Bakr, Mustafa Safaa Ahmed
AU - Hunter, Ian
AU - Bösch, Wolfgang
PY - 2018
Y1 - 2018
N2 - In this paper, a new class of triple-mode microwave filters is presented. These devices use the degenerate pair of the H E 11δ mode and the single T M 01δ mode in dielectric-loaded cavities with an unloaded Q-factor of 3000-5000 and reasonable spurious-free window. The proposed structure is obtainable in less than one-quarter of the physical volume of equivalent TEM filters. A finite-element method solver for electromagnetic structures (HFSS) is used to study the main properties of this resonator. Fundamental design rules for triple-mode bandpass filters with controllable finite transmission zeros are presented. Design examples of bandpass filters with finite transmission zeros on the high or low or both sides of the passband are demonstrated. Measured results demonstrate excellent performance.
AB - In this paper, a new class of triple-mode microwave filters is presented. These devices use the degenerate pair of the H E 11δ mode and the single T M 01δ mode in dielectric-loaded cavities with an unloaded Q-factor of 3000-5000 and reasonable spurious-free window. The proposed structure is obtainable in less than one-quarter of the physical volume of equivalent TEM filters. A finite-element method solver for electromagnetic structures (HFSS) is used to study the main properties of this resonator. Fundamental design rules for triple-mode bandpass filters with controllable finite transmission zeros are presented. Design examples of bandpass filters with finite transmission zeros on the high or low or both sides of the passband are demonstrated. Measured results demonstrate excellent performance.
U2 - 10.1109/TMTT.2018.2873309
DO - 10.1109/TMTT.2018.2873309
M3 - Article
SN - 0018-9480
VL - 66
JO - IEEE Transactions on Microwave Theory and Techniques
JF - IEEE Transactions on Microwave Theory and Techniques
IS - 12
ER -