Journal
IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS
Volume 12, Issue -, Pages 15-18Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LAWP.2012.2237156
Keywords
Antenna arrays; isolation enhancement; meander lines; mutual coupling reduction; resonators
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A new approach to enhance the isolation in microstrip patch antenna arrays is described in this letter. The implementation of a slotted meander-line resonator (SMLR) is done by creating defect in the microstrip structure particularly designed for band-notch function. The resonator is designed to block the surface current at the resonant frequency of the two patch antennas coupled along H-plane and operating at a frequency of 4.8 GHz. The interelement isolation before and after the implementation of SMLR has been investigated. The proposed configuration provides an improvement in isolation by 16 dB (measured value) with a reduced edge-to-edge spacing of 7 mm (lambda(o)/9). The configuration has been designed, simulated, and validated experimentally.
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