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A Hybrid Isolator to Reduce Electromagnetic Interactions Between Tx/Rx Antennas

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4 Author(s)
Mahmoud Niroo-Jazi ; Dept. of Electr. & Comput. Eng., Concordia Univ., Montreal, QC, Canada ; Tayeb A. Denidni ; M. R. Chaharmir ; A. R. Sebak

A hybrid compact isolator with a cross section of 17 × 11 mm2 is proposed to reduce the electromagnetic coupling between two vertically polarized Tx/Rx microstrip antennas, both operating at 9.4 GHz. This isolator is built by embedding a piece of artificial material between two metallic walls. The obtained results using this hybrid isolator demonstrate that the coupling between the two antennas is significantly reduced across at least 55% of the matching band. To substantiate the proposed configuration, a prototype is fabricated and tested, and the corresponding measured results are presented. Furthermore, the discrepancies between the simulations and measurements are interpreted with the aid of the electromagnetic (EM) simulator.

Published in:

IEEE Antennas and Wireless Propagation Letters  (Volume:13 )