Dpaa

Dynamic Patch Antenna Array

Sanjog Patil#1, Ritesh Sarode#2, Ramachandran Iyer #3, Mayur Shivalkar #4

#Final Year, Electronics and Telecommunication Engineering, University of Mumbai 1sanjog.patil@vit.edu.in,2ritesh.sarode@vit.edu.in,3ramachandran.iyer@vit.edu.in,4mayur.shivalkar@vit.edu.in

Abstract— A conventional patch antenna that can alter its radiation pattern is impractical to implement. The main objective of this paper is to present an idea of an antenna array structure which can vary its radiation pattern using switching technology. This antenna structure consists of array of four patches (Dynamic Patch Antenna Array-DPAA) placed at an optimized distance with respect to wavelength radiating at 2.437 GHz which is the center frequency of 6th Wi-Fi channel. With such configuration, the main beam radiated by the array can be steered due to the effect of mutual coupling between the driven elements and the parasitic elements (directors). The active feed network will consist of a 1:4 equal power divider (Wilkinson’s Power Divider). The antenna radiation characteristics are simulated using Agilent’s Advanced Design System (ADS) software. The results confirm that the main beam can be pointed in the following directions depending on the energizing combination of patches: 0°, 4°, 25°, 335°(-25°), 356°(-4°). The future scope is to make the beam achieve high directivity and narrow beam width thereby achieving beam steering control using RF switches which will be autonomously controlled by software coding.

I. INTRODUCTION

1. The development of wireless communication has opened the doors for research in the field of the antenna design. But for various new applications some modifications has to be done in the existing antennas. While adding new features to existing antennas, question arises about the benefits and applications of the modifications done.

2. Reconfigurable antenna will be an attractive feature in the modern wireless communication...