Design of Circular and Inverted Y-Shape Slot Loaded Dual Band Microstrip Patch Antenna for Wireless Applications

The main aim of this paper is to design a dual-band antenna for wireless communication applications. This proposed antenna is prepared by using rectangular notches, circular, and inverted Y-shaped slots. Initially, a pair of rectangular notches is created on bottom corners of the patch; after that, an inverted Y-shaped slot is created on the top, and finally, two circular slots are created in the patch. The proposed antenna is resonating from 3.19 to 3.40 GHz for lower and while 4.97 to 5.53 GHz for upper bands. The bandwidths of 210 MHz (6.37%) in lower band (LB) 560 MHz (6.98%) are obtained by the proposed antenna in upper band (UB) frequencies. The proposed antenna resonates at 3.30 GHz with a return loss (RL) of –14.54 dB in the lower band and resonates at 5.24 GHz with a return loss of –41.77 dB. The proposed antenna provides a gain of 4.21 and 4.80 dB, a VSWR of 1.46 and 1.01, directivity of 4.37 and 4.80 dB, and also an efficiency of 90.62% and 93.99% in the lower and upper bands. The proposed antenna is very efficient and convenient for the various applications of wireless communication.