Abstract
The periodic defected ground structure (PDGS) has been proposed in this work to diminish high mutual coupling of antenna components. The PDGS is always periodically etched on the bottom ground plane along x-axis, placed at the center of the two neighboring patches with side-by-side distance of 0.025λ (λ free space wavelength). Both PDGS and antenna elements are not coplanar, working at the center frequency 5.8 GHz. By inserting a compact PDGS structure at the ground plane facing the center of the two patches, over 50 dB of coupling between adjacent antennas is suppressed within the effective operating frequency range of 5.7–5.9 GHz, achieving low coupling and compact type in the antenna arrays.
Published Version
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