A Tuneable Microstrip Antenna Design with Multifaceted Ability: Compactness, wideband, and Multi-frequency Operation

In this paper, an antenna has been designed which shows three resonant frequencies. How one of the frequencies can be tuned, has been shown. The ratio of the tuneable frequency f2 to the fixed fundamental frequency f1 can be varied from 1.6 to 1. It is also discussed that optimum tuning of the frequencies may also lead to a wide band antenna which will have much higher gain compared to monopole antenna. It has been also shown that the designed antenna is much compact compared to reference antenna.