High Gain Meander Line Antenna for 2.4 GHz Bluetooth Applications

In this paper, a highly directive meander line antenna is proposed to be utilized in the unlicensed Bluetooth band. The main goal of the proposed structure is to achieve low profile, and high gain in the Bluetooth band. Moreover, the antenna should be of low cost to be suitable for commercial use. The proposed structure is simulated using HFSS and CST to verify the obtained results. The maximum calculated gain of the antenna is 9.95 dBi (9.79 dBi) along the end-fire direction as simulated by HFSS (CST). The antenna demonstrated high radiation efficiency which is around 96% over its working bandwidth ranging from 2.395 GHz – 2.5 GHz (2.4 GHz – 2.48 GHz), according to HFSS (CST). The antenna also demonstrated its high polarization purity with maximum cross polarization level of −24 dB.