Miniaturized Quarter-Wavelength Resonator for Common-Mode Filter Based on Pattern Ground Structure
Journal
2019 Joint International Symposium on Electromagnetic Compatibility, Sapporo and Asia-Pacific International Symposium on Electromagnetic Compatibility, EMC Sapporo/APEMC 2019
Pages
816-819
Date Issued
2019
Author(s)
Abstract
Two miniaturized methods for quarter-wavelength resonator of common-mode filter (CMF) based on pattern ground structure (PGS) are proposed. By the proposed symmetric structure, the size of CMF can be reduced by 33.7 % compared to the conventional work with the straight quarter-wavelength open stub. To achieve further size reduction, the asymmetric structure is also investigated. By utilizing asymmetric PGS, the size of CMF can be significantly reduced by 61.1 % compared to the conventional work. Moreover, the two-stage asymmetric PGS provides the wider common-mode (CM) stopband bandwidth and it is still smaller than conventional work. The differential mode insertion loss can be also improved owing to the small size of the proposed CMFs.
Type
conference paper