Suppression of Mutual Coupling in Dual Differentially Fed Microstrip Patch Array Antenna

Kedze, Kam Eucharist; Zhou, Wenyu; Labossiere, Jorden; Javanbakht, Nima; Shaker, J.; Amaya, Rony E.

doi:10.1109/ap-s/usnc-ursi47032.2022.9886055

Cited by 1 publication

(2 citation statements)

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“…The defected ground structures (DGS) [16][17][18][19] between the antennas act as a band-stop filter. An alternative coupling path can be provided by neutralization lines [20][21][22][23] or parasitic cells [24][25][26][27][28][29][30], whose energy coupled has an equal magnitude and opposite phase to that coupled in space, in order to cancel the coupling. The coupling between the antennas can be effectively reduced by placing the split ring resonators [31] on the spatial coupling path [30].…”

Section: Introductionmentioning

confidence: 99%

“…An alternative coupling path can be provided by neutralization lines [20][21][22][23] or parasitic cells [24][25][26][27][28][29][30], whose energy coupled has an equal magnitude and opposite phase to that coupled in space, in order to cancel the coupling. The coupling between the antennas can be effectively reduced by placing the split ring resonators [31] on the spatial coupling path [30]. An effective decoupling effect can be achieved by introducing a miniaturized ladder resonator in the gap between the antennas [29].…”

Section: Introductionmentioning

confidence: 99%

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Compact-Transmission-Line Decoupling and Matching Network of Three-Element Array for Wireless Applications

Zhang

Jiao

2023

Electronics

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In this paper, a compact-transmission-line (TL) decoupling and matching network (DMN) for three-element circular arrays is presented. As a result of the miniaturization of wireless terminals, the antenna spacing is too close, leading to large couplings and deteriorating system performance. The DMN consists of an impedance transformation section and a star-shaped neutralization section which eliminates couplings between antennas while occupying a smaller area. The impedance transformation section converts the odd and even mode conductances of the antenna to the impedance of the feeding line, and the neutralization section eliminates the odd and even mode susceptances to complete the decoupling and matching of the antenna. The star-shaped circuit utilizes the area surrounded by the antennas in a more efficient manner than traditional triangle circuits. This facilitates the folding of the TL and the miniaturization of the circuit. A design formula is given for each module of the circuit after it has been analyzed analytically. A decoupling example is simulated and manufactured with the diameter of the area occupied by the DMN less than a quarter wavelength. At the working frequency, the port isolation is increased from 7.6 dB to 33.5 dB. The ECC between ports is reduced from 0.11 to 0.011, which validates the method proposed.

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