Mutual coupling reduction in patch antenna arrays

In this paper, meander line (ML) as a parasitic configuration is introduced to reduce the mutual coupling (MC) between two microstrip patch antenna elements. Inserting a slot in the middle of ground plane is a simple method to reduce the MC, by adding the ML in the proper position in the slot can further reduce the MC. Along with this letter, several prototypes have been fabricated and measured. The simulated results show a close agreement with the experimental results, which show that a maximum MC reduction of 40dB can be achieved.