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Microstrip Array Antenna Design with Directivity Enhancement Using Reflector Surface

The goal of this paper is to enhance the Directivity in Microstrip Antenna Array by adding Reflector Surface plane in ground plane. The Microstrip Antenna (MSA) is an antenna that is widely used in microwave waves which has many advantages, however, it represents a low built-in directivity. The suggested antenna array is made by using metamaterial reflecting surface to get the maximum directivity and high gain. In this research, a MSA is designed at 2.1 GHz and maximum directivity and gain are studied. A coaxial probe feeding technique is adopted to feed the antenna array. CST (Computer Simulation Technology) simulation of the suggested single and array antenna shows enhanced the gain, directivity and return loss at the center frequency of 2.1 GHz. At single element antenna, the gain is enhanced from 3.3225 to 6.462db and the directivity from 3.310 to 6.462dbi. Improvement in the performance of the design is achieved by using two elements antenna approach. Further improvement achieved in the work of the design by using four elements antenna approach.