HIGH GAIN ARRAY ANTENNA WITH A LOW SIDELOBE LEVEL FOR POSITIONING SYSTEMS

Abstract

The paper presents a novel high-gain and low-sidelobe level array antenna at 5GHz for localization applications. The proposed antenna array consists of sixteen element Yagi antennas that have been designed on Rogers 4003C with a thickness of h = 0.8 mm, a dielectric constant of ε_r = 3.55 and a loss tangent 0.0027, the overall size of array antenna is 58.5×27.4 cm². To obtain Low Sidelobe Levels (SLLs), the antenna elements are of non-uniform gain which rule Cheybyshev distributes, and they are using equal split T-Junction in series feeding networks. The array antenna was designed using finite element method in Computer Simulation Technology (CST) application. Simulation results show that array antenna can provide high gain of 18.5dBi and a low SLL of -21.32 dB at 5GHz.