Sequel Reaction of Slots in Patch and Ground Plane on Microstrip Antenna Performance: Review

This paper presents the outcomes or effects of the slots in ground plane and patch on resonant frequency, impedance bandwidth, gain and side lobe. The microstrip antennas have been designed on εr = 4.3 and h = 1.53 mm. It has been observed as the slot length boosts the resonant frequency shifted to the lower side by 19.05 % and 5.04 % of fundamental frequency of slotted patch and slotted ground plane patch respectively. This shows the size reduction of slotted patch antenna is more than slotted ground plane patch. Likewise as the slot width increments the resonant frequency further shifted to lower frequency side. The shift in the fr (frequency response) due to length variation is more in both cases in comparison to width variation. The impedance bandwidth, Gain, side lobe and radiation efficiency effect due to slots have also been studied. This type of study is useful to design the compact antennas for Mobile communications.