Equivalent Circuit Model of the Slotted Ground Structures ( SGSs ) Underneath the Microstrip Line Hung
نویسنده
چکیده
In this paper, the equivalent circuit model of the slotted ground structures (SGSs) underneath the microstrip line is presented. The slotted ground structures are etched off on the ground plane to provide the stopband over the desired frequency range. The frequency response of the stopband can be determined by the dimensions of SGSs. The interaction between the SGSs can equivalent to a parallel T-network circuit and the elements can be derived from the simple formulas. Current distribution on the ground plane shows the interactions of electromagnetic waves propagation around the SGSs at 3.75 and 4.32 GHz. Measured results of the SGS are in good agreement with the EM and circuit simulation.
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