A Circularly Polarized Multi-Beam Phase Array Antenna for LEO Satellite Communication

Multi-beam antenna has high-gain wide-beams to achieve 3D full space coverage. In this paper, an antenna with multiple beams is designed for the LEO satellite communication. Seven subarrays are used to cover different areas on earth with seven fixed wide-beams. Each subarray contains 4×4 antenna elements with 12mm element spacing. The entire array antenna including 16×7 elements form a phase-controlled beam to enhance the gain of antenna in a particular given area. Moreover, the designed antenna has a compact structure.