Abstract

The paper presents the novel design of rectangular microstrip slotted patch antenna loaded with modified
ground plane for wideband wireless applications. In this design different types of ground plane has been
employed to achieve wideband characteristics over the frequency range of 1GHz to 10GHz. Proposed
antenna is investigated on low cost FR4 glass epoxy substrate with 1.6mm thickness, 4.4 dielectric constant
and is designed by using the resonant frequency of 2.45GHz. By varying the dimensions of ground plane
and after adding horizontal stub or vertical stub; the final geometry of proposed antenna exhibits wide
bandwidth of 1959MHz, 700MHz and 2970MHz. The proposed antenna is also tested by using VNA
(Vector Network Analyzer) to validate the simulated results with the measured results and it has been
observed that both the results are in good agreement with each other. The wideband characteristic of
proposed antenna makes it suitable for the different wireless applications such as GSM standards (DCS 1.71
– 1.88GHz and PCS 1.85 – 1.99GHz), UMTS (1.92 – 2.17GHz), Bluetooth (2.41 – 2.49GHz) of ISM band,
2.45GHz, WiMAX (3.3GHz – 3.7GHz, 5.25GHz – 5.85GHz), WLAN (5.15GHz – 5.85GHz), X-band
satellite applications (7.1GHz – 7.76GHz) and point to point high speed wireless communication
(5.925GHz – 8.5GHz).