Mutual Coupling Reduction of Microstrip Antennas using Defected Ground Structure

Coupling Reduction of Antenna Array Elements Using Small Interdigital Capacitor Loaded Slots

“…Slots have been employed to improve the performance in multiple applications such as filters, couplers, as well as to reduce the mutual coupling between elements of antenna arrays [13][14][15][16][17][18][19][20][21]. In [20], an H-shaped DGS was investigated and applied to reduce mutual coupling, however, the size of DGS slot was large.…”

Radiation Properties Enhancement of Triangular Patch Microstrip Antenna Array Using Hexagonal Defected Ground Structure

“…Both references implemented EBG between two element arrays, these antenna designs are complex structure. The author found papers by Salehi et al [7] and by Zainud-Deen et al [8] which used dumbbell shape DGS for antenna array, however the results were simulation one and not realized through experimental results.…”

Mutual Coupling Reduction Using Dumbbell Defected Ground Structure for Multiband Microstrip Antenna Array

“…Meanwhile, for antenna application, DGS is mainly applied to the feeding technique. To suppress mutual coupling between arrays, several studies of DGS in single band antenna arrays have been conducted [6][7][8]. However, in this study, we designed and realized DGS in multiband antenna arrays and paid attention to reduce the mutual coupling effect by proposing dumbbell shape DGS to be implemented in a multiband microstrip antenna array.…”

“…DGS is realized by etching the ground plane with a certain lattice shape which disturbs the current distribution of the antenna. Many shapes of DGS have been studied such as concentric ring [2], circle [3], spiral [4], dumbbells [5][6][7][8], elliptical [9] and U-and V-slots [10]. Each DGS shape can be represented as an equivalent circuit consisting of inductance and capacitance, which leads to a certain frequency bandgap determined by the shape, dimension and position of the defect.…”