Design and Implementation of Phased Array Antenna using Advanced Design System

Abstract: Phased arrays are a form of steerable antenna whose performance motivates the development of alternative structures which allow us to obtain simplified designs as powerful as the original approach but significantly cheaper. A System based design of phased array antenna using Advanced Design System is employed in ISM (The Industrial, Scientific and Medical) frequency range. Array antennas are used extensively in remote sensing applications, where a highly directive beam is needed to scan a particular area of interest on the surface of the earth. The study focuses on the design of different microstrip patch antenna arrays to be used in environmental sensing applications in the ISM frequency bands. Arrays of microstrip patches are easily printed on substrates using photolithography techniques and can be mass produced at cheap costs. In this paper we have implemented two types of array model using rectangular patch. Specifically, 1X2 and 2X2. This study includes design of feedback network, impedance matching, and return loss calculation. The substrate used is FR4 with dielectric constant of 4.6 and thickness about 1.6mm. The feed network is designed and optimized using ADS 2013 and then integrated with the array.

Keywords: Antenna, Array, Return Loss, Spacing, ADS (Advanced Design System)