Defected Ground Structure: Fundamentals, Analysis, and Applications in Modern Wireless Trends

Table 3

Comparison of parameter extraction methods.

S. N	Method	Advantage	Disadvantage	Summary
1	LC and RLC [12]	DGS which have similar shape like dumbbell DGS have almost same characteristics like dumbbell DGS and could be analysed	Complex and cannot determine the location of DGS	An equivalent circuit model of one-pole Butterworth low pass filter
2	shaped [31]	More accurate results in comparison with LC and RLC circuits	Complex and cannot determine the location of DGS	Explains both amplitude versus frequency and phase versus frequency characteristics
3	Quasi-static [32]	The limitations of full-wave analysis can be overcome by developing the equivalent circuit model depending upon quasi-static technique	Complex and cannot determine the location of DGS	Role of dimensions of the DGS is explained for creating the stop band characteristics
4	Using ideal transformer [33]	Can determine the location of DGS	—	A simple and accurate circuit model for the slotted ground plane with microstrip line