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

Table 2

Applications, advantages, and disadvantages of different type of DGS.

S. number	Shape	Reference	Advantage	Disadvantage	Applications
1	Dumbbell	[12]	Simple structure, easy to design and analyse	Single stop band	Band-stop filter
2	HPDGS	[29]	38.5% size reduction	Larger size than VPDGS, dispersion problem	Matching network of amplifier
3	VPDGS	[29]	44.4% size reduction	Dispersion problem	Matching network of amplifier
4	-slot	[14]	Improved -factor	Single stop band	Band-stop filter
5	-slot	[14]	Improved -factor	Single stop band	Band-stop filter
6	Cross DGS	[15]	Sharp rejection, ultra-wide stop band	—	Low pass filter
7	Fractal DGS	[13]	Wide stop band	No sharp cut-off frequency	Band-stop filter
8	Spiral DGS	[30]	Multistop band	Complex analysis	Band-stop filter