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A novel wide stopband and compact bandstop filter (BSF) is proposed and realized based on defected ground structure (DGS) and meandered signal line on SiP. An equivalent circuit model is built to characterize the filter behaviors. At the same time, a condition for transmission zeros is derived. It can be observed that the equivalent circuit model reasonably agrees with the full-wave simulation and...
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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