Spiral Shaped Multi Frequency Printed Antenna for Mobile Wireless and Biomedical Applications

A novel multi frequency printed antenna is presented in this article. This type of antennas is very useful for the wireless world of today. The proposed antenna covers the low frequency biomedical band as well as various mobile wireless bands such as GSM bands, Bluetooth, ZigBee, Wi-Fi, WLAN and LTE bands etc. The antenna has multi resonating point between 0.5 and 5.6 GHz. The antenna is compact and its size is 32 × 40 × 1.6 mm 3 . Coplanar waveguide (CPW) feed is used to excite this antenna. CPW feed improves the bandwidth of every resonating point between the above said frequency range. A detailed parametric study of the proposed prototype is presented in this paper. The results show that gain is improved from low frequency to high frequency range. The radiation pattern is directional, which is the most important need of biomedical and specific mobile wireless applications, and radiation efficiency is also good. The prototype is designed and simulated using HFSS. Further measured and simulated results are compared and a good impedance match is found between them. Overall this antenna can be used as a module with bunch of wireless applications.