论文信息 - Controlled capacitance and inductance behaviour of L-shaped defected ground structure for coplanar waveguide

Controlled capacitance and inductance behaviour of L-shaped defected ground structure for coplanar waveguide

The behaviour of the electromagnetic field in an L-shaped defected-ground structure (DGS) for a coplanar waveguide (CPW) has been investigated and the parameters affecting the inductance, the capacitance and the resistance are separately determined. Numerical experimenta- tion of the effect of different design parameters has been carried out, which leads to a very wide variation of the band-stop frequency (2.8-10.5 GHz). Based on parameter sweeping, two wideband band-stop filters have been designed using four cascaded cells of double-sided, two-section, L-shaped DGS. The central frequencies achieved are 6.0 and 3.7 GHz and the band-stop widths are 2.8 and 2.0 GHz with rejection larger than 30 and 25 dB, respectively. All numerical investigations have been confirmed experimentally and excellent agreement has been achieved.

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