Inset fed semi-circular disk patch antenna for dual and broadband operation

In this paper, microstrip line fed notches loaded semi-circular disk patch antenna is proposed. Proposed antenna resonate at two resonating frequencies i.e., 5.8 GHz and 10 GHz. Bandwidth achieved at first resonating frequency is 2.1% whereas at the second resonating frequency is 24.5%. An antenna shows the dual and broadband characteristics with good radiation pattern at broader side, maximum directivity of 6.5 dB, maximum gain of 3.1 dB. Proposed antenna is simulated using IE3D software and its equivalent circuit diagram is proposed to calculate the return loss and VSWR. Result obtained using circuit theory concept is compared with simulated results i.e., method of movent.