Design and Analysis of Slotted Ground Rectangular Patch Antenna for Worldwide Interoperability for Microwave Access, Wireless Local Area Network, Ultra Wideband and X-Band Applications

摘要

In the present letter, we are designing a co-planar waveguide rectangular patch antenna with an area of $(mathbf{Lp}imes mathbf{Wp}) mathbf{mm}^{mathbf{2}}$. This is exciting by using a feed line having the dimensions of $(mathbf{Lf}imes mathbf{WD}) mathbf{mm}^{mathbf{2}}$. An FR-4 substrate occupying the volume of $(mathbf{L}imes mathbf{W}imes mathbf{R}) mathbf{mm}^{mathbf{3}}$ is used. A ground plane having an area of $(mathbf{Lg}imes mathbf{Wg}) mathbf{mm}^{mathbf{2}}$ is designed on the top of the substrate and an aperture of $(mathbf{Ls}imes mathbf{Ws}) mathbf{mm}^{mathbf{2}}$ is cut on the ground to improve the bandwidth characteristics. The s designing and simulation was done by using microwave studio computer simulation technology (MS-CST). From the results, it is observed the proposed structure is operating at 3.4 GHz (i.e., IEEE 802.16-WiMAX-worldwide interoperability for microwave access), 5.15 GHz (i.e., IEEE 802.11a-WLAN-wireless local area network), 3.1-10.6 GHz (UWB-ultra-wideband), and 8–12 GHz (X-band) applications. And it is also observed that the proposed antenna exhibits nearly Omni directional radiation patterns, return loss (S11) $< -mathbf{10} mathbf{dB}$ and VSWR (voltage standing wave ratio) $< mathbf{2}$ and gain $leq mathbf{5} mathbf{dB}$ except at the resonant frequency, 6.75 GHz within the UWB range.