Improvement of microstrip antenna´s gain, bandwidth and fabrication tolerance at terahertz frequency bands

A method has been developed to design microstrip antennas at terahertz (THz) frequencies which improves the antenna gain, bandwidth and fabrication tolerance. A microstrip patch antenna is designed at 100GHz frequency and fabricated with the simple laboratory based PCB etching process. The gain is improved to 13.4dBi by using three patch elements. The -10dB return loss bandwidth (BW) is measured to be 5.55% of the central frequency. The measured and the simulation results are in good agreement.