As many researchers currently use defective ground in their antenna design, so what is the significance of this type of antenna, and what are the equation for the same.
The defected ground plane is acting as an electrical wall in an antenna. It forms an integral part of the feeding mechanism and the radiator. It alters the effective input characteristics and output radiation pattern of an antenna. It performs the following functions:
It controls the amount of energy that can be coupled from the source to the radiator.
It controls the coupling of the mode current in the ground plane and the antenna.
It is used for antenna miniaturization by concentrating on the current density.
It controls the image theory as well.
It improves radiation efficiency by reducing effective losses.
The formula for defected ground plane depends on so many factors.
The main aim of incorporating the defect (etched) structure is to profoundly alter the current distribution of the structure, which can at the same time improve the bandwidth of the antenna.
Incorporating the defect (etched) structure is to alter the current distribution of the structure, which profoundly improves the bandwidth of the antenna.