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An E-shape resonator dualband common mode filter is introduced in this paper. The proposed design features the advantages of two-layer printed circuit board design with solid ground plane. Furthermore, the equivalent common mode circuit of coupled step impedance quarter-wavelength resonator improves the common mode suppression performance.
To develop common mode filter design, a tri-section quarter wavelength resonator common mode filter is introduced in this paper. The step impedance quarter wavelength resonator in common mode provides capabilities of tunable suppression bands by controlling the 1st and 3rd resonant frequency. In addition, the transmission zero in differential mode due to the difference of phase velocity between common...
A miniaturized common-mode suppression filter for GHz differential signals is realized using LTCC fabrication technology. The filter is realized in SMD-typed package with the physical size of 1.6 mm × 1.6 mm. Its equivalent circuit model is established to illustrate the properties of the common mode suppression and the differential mode propagation. It is found in measurement that the common-mode...
A broadband common-mode noise suppression filter for GHz differential signals is proposed using effective negative permittivity transmission line metamaterial. The proposed structure possesses a complete ground plane for the use of the multilayer structure. The equivalent circuit models for odd mode and even mode are developed to derive the dispersion relation and understand the characteristic of...
A differential transmission line using a negative permittivity metamaterial is proposed with the intrinsic characteristic of wideband common-mode suppression. Based on the transmission line theory, a dispersion diagram is derived from the corresponding equivalent circuit model. It manifests that in the structure, the differential mode can propagate at all frequencies, while the common mode can only...
A wideband and compact filter design for common-mode noise suppression in high-speed differential signals is proposed based on two U-shaped and one H-shaped coupled patterned ground structure. An equivalent model of three coupled LC resonators to predict the common-mode suppression characteristics is also developed with good agreement to the full-wave simulation and measurement result. A test sample...
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