Compound reconfigurable microstrip patch antenna array using integrated controlled ground modified structure and sub delay line feeding network

This paper proposes compound reconfigurable patch antenna using Integrated Controlled Ground Modified Structure (CGMS) and Sub Delay Feeding Network Architecture (SDFNA). The 4 × 4 antenna array is designed and investigated. The frequency are obtained and controlled newly using slot dimension etched on the ground layer while direction of radiation pattern is controlled by interchanging two different lengths of delay line on the main T junction of feeding network. Three directions of radiation pattern are obtained from the proposed antenna, for each frequency, 1, -10, +10 for 7.5 GHz, and 0, -8, +14 for 8.85 GHz. Design with high gain and better efficiency the antenna has potential to serve for outdoor wireless communication systems.