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A compact structure with slot splitting meandered lines defected ground is proposed to reduce the mutual coupling between two microstrip antennas with a center-to-center distance of 0.38λ. The meandered line… Click to show full abstract
A compact structure with slot splitting meandered lines defected ground is proposed to reduce the mutual coupling between two microstrip antennas with a center-to-center distance of 0.38λ. The meandered line defected ground structure is symmetrically etched on the ground between the microstrip antennas. The proposed structure is optimized and explained by the common/differential mode theory. For experimental verification, the structure is fabricated and measured. Simulation and measurement results with excellent agreement show that the mutual coupling can be reduced significantly using the proposed structure. In addition, significant improvement is achieved in radiation efficiency, realized gain, and the decoupled array's envelope correlation coefficient.
Journal Title: IEEE Antennas and Wireless Propagation Letters
Year Published: 2021
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