Design of Wide-Bandwidth KU/KA Band Common Aperture Antenna Array

With the development of aircraft, missiles, satellites and other fields, miniaturization and the ability to work in multiple frequency bands have become the development trend for antennas. In this paper, we designed a Ku/Ka band common aperture antenna array based on microstrip antenna. The operating frequency range of the unit is 14.78GHz to 17.91GHz and 32GHz to 36GHz, relative bandwidth reaches 19.14% and 11.76%. 5×5 Common Aperture Antenna array based on the unit range is ±30°.