Multi-feed reconfigurable pattern antenna implemented by switches

In this paper two multi-feed reconfigurable pattern antennas (MFRPA) have been proposed; a multi-feed with phase switching method was introduced to achieve a reconfigurable pattern for single microstrip ring or central grounded circular patch antenna; by controlling the phase of exciting source of each port, several reconfigurable beams can be achieved, and simulation and fabrication experiments have been carried out to verify the design.