A Compact Two Via Slot-Type Electromagnetic Bandgap Structure

A novel two via slot-type electromagnetic bandgap (TVS-EBG) structure is presented in this letter. Design and analysis of the TVS-EBG structure are done by using the LC analytical model. In the central located via EBG (CLV-EBG) and the edge located via EBG (ELV-EBG) structure, current flowing through via gives the inductor (L) and the gap between the adjacent cells gives the capacitance (C). From the LC analytical model, in order to design compact EBG structure, the product of LC should be high. TVS-EBG structure increases the value of C and L per unit EBG cell by making a slot on the square patch of the cell and two via between square patch of the cell and ground plane. TVS-EBG structure simulated using Ansoft HFSS and tested. Simulated and experimental results prove that, compared with CLV-EBG, complementary split ring resonator-based EBG, and ELV-EBG, a size reduction of 35.29%, 17.20%, and 13.48% has been achieved, respectively.