Metamaterial Filtenna at 2.4GHz for Bluetooth Application

Abstract

Nowadays, modern technologies in aerospace, medical electronics and communication systems require reliability and accuracy to support wireless technology standard such as Bluetooth. Thus, there is a huge demand to have a reliable bluetooth antenna for precise measurement. Combination of filter and antenna or also known as filtenna is an alternative solution in the radio frequency (RF) frontend circuit to reduce the transmission losses. Metamaterials (MTM) are materials typically engineered with novel or artificial structures to produce electromagnetic properties that are impossible to retrieve in nature. MTM offer many advantages in electromagnetic applications from microwave to optical range, especially for the radiated-wave devices. In this paper, a MTM filtenna at 2.4GHz for bluetooth application has been proposed and designed. It combines Split Ring Resonator (SRR) band pass filter with Modified Electrical Coupled Resonator (MELC) resonator antenna. The performance of this proposed (MTM) filtenna is then compared with conventional filtenna. From the simulation results, it can be observed that MTM filtenna achieves 6.88% antenna gain improvement, 89.92% return loss improvement and 23.44% overall size reduction as compared to conventional filtenna.