Reconfigurable Frequency-Selective Microstrip Patch Antenna Design for C-Band Communications

In this study, a reconfigurable frequency-selective microstrip antenna operating in many different frequency ranges in C-band is designed and analyzed by using High Frequency Structural Simulator (HFSS). FR4 dielectric material and copper conductive substrates are preferred in the design of the antenna with dimensions of 15 × 30 mm and thickness of 1.6 mm. In addition to that, two PIN diodes are utilized to make the microstrip antenna reconfigurable and enable it to operate in six different frequency regions (3.62−4.02 GHz, 3.78−4.96 GHz, 3.79−4.22 GHz, 4.46−8.24 GHz, 4.79−7.89 GHz, 4.92−8.09 GHz) depending on four different switching states. Due to the small and economical structure of the proposed antenna, it can be used in many different fields and applications in the C-band operating range.