Investigation into paradigm junction capacitance and inductance of dumbbell-shaped slotted ground structures

Abstract

Five novel slotted ground microstrip structures have been studied to prove that the gap and the cross junction capacitances and the associated inductance have significant influence on the attenuation poles and passband characteristics. A quasi-static analytical approach based on the concentration of the surface current on the slotted ground plane structure is adopted. Theory is validated against simulation results by commercial Electromagnetic (EM) solver CST Microwave Design Studio TM and measurement by an Agilent performance network analyzer (PNA) E8361A. Robust agreements between theoretical, simulation, and calculated results support the hypothesis. It has been proved that though both the gap and junction capacitances play significant role in determining the attenuation pole, the gap capacitance favorably reduce the location of the attenuation pole with moderately high selectivity of the stopband.

The dimensional effects of windowing on crosstalk for high speed hard disk drive interconnects

“…Meanwhile, the 90% windowed one has the insertion loss as −1.48 dB which is a 4.27 dB improvement. For the TSAI with windowing, a dip occurs at around 10 GHz, except the 90% windowed structure occurred at around 20 GHz according to resonance frequency of the defected ground structure as described in . Furthermore, the insertion loss in case of the TSAI with windowing is improved.…”