Design of Circularly Polarised Frequency Reconfigurable Wearable Microstrip Patch Antenna for Wireless Applications

In this paper a Novel structure of circularly Polarized frequency reconfigurable Microstrip patch antenna has been presented for 1.9GHz, 2.4GHz and 5.5GHz frequencies. Micro strip patch antenna carries attractive features like low profile, flexible, light weight, small volume and low production cost. This paper presents a frequency reconfigurable micro strip patch antenna of incisive design that can be consolidated with wearable technology with a Liquid crystal polymer substrate. The layers of Liquid crystal polymer (LCP) and mercury on conventional patch antenna achieves the frequency reconfiguration. The Proposed Structure was modeled and simulated using CST Microwave Studio and the antenna Parameters such as return loss, radiation pattern and efficiency are checked in free space. For Evaluating on Body Performance the antenna was simulated using numerical model of human body. The simulated output has the return loss of less than - 10dB.