Enhancement of Microstrip Patch Antenna (MSPA) with Partial Ground

A novel design of microstrip patch antenna using four split ring resonators placed complement to each other on fr4 epoxy substrate has been proposed in this research article. Additionally, partial ground is utilized for increasing the bandwidth of antenna and to make it compatible at X-band range. The antenna design is designed and simulated using High frequency (HF) simulation software (HFSS) version 13. From the simulation of the designed antenna, two resonant frequencies are observed at 10.888GHz and 12.316GHz having minimum return loss of -18.9089 dB and-35.5072 dB respectively making it suitable for HF applications with impedance bandwidth of 1.869GHz. The third improved parameter is VSWR which is found to be optimum with value 0.294 at frequency 12.316GHz and within the acceptable range from 10.888GHZ to 12.316GHz. The same antenna design has been fabricated and results are verified using Vector Network Analyzer. We have noticed that measured results are better than simulated results with three resonant frequencies and optimum return loss of -42.50dB at 11.025GHz. The radiation pattern of designed antenna is also found to be directional making it suitable for X band applications.