Performance Improvement for Patch Antenna Over ISM band (5.725-5.875) GHz Using Multiple Superstrates
Keywords:Performance Improvement, Superstrate Layers, Multilayer Antenna, Side Lobe Layer, and WLAN Applications.
A multilayer antenna structure proposed to enhance the performance of patch antenna used for WLAN applications. The antenna composed of three layers of Rogers RO3010 located above a feeder patch antenna. Adding superstrate (dielectric) layers above feeding patch improved the overall performance of antenna. An agreement between simulated and measured results was achieved in terms of return loss, gain, and operating bandwidth. The proposed antenna had achieved gain of 11.30 dB, Front-to-Back (F/B) ratio of 18 dB, and gain variation around 0.6 dB over the Scientific, Industrial, and Medical ISM band (5.725 - 5.875) GHz. The simulated and measured return loss, resonant frequency, gain and bandwidth for the proposed design are presented. Computer Simulation Technology (CST Microwave studio) was used as a simulation environment for this design.