Journal
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
Volume 67, Issue 4, Pages 2769-2774Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TAP.2019.2897489
Keywords
Compact antenna array; dual-band isolation method; multiple-input multiple-output (MIMO); mutual coupling; split electromagnetic bandgap (EBG)
Funding
- National Natural Science Foundations of China [61701041, 61671084, 61821001]
- Guangzhou Major Projects of Industrial Technology of China (Research and Development of Large-Scale Multi-Beam Antenna Array for 5G Massive MIMO Communication)
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A closely located dual-band meander-line antenna array with isolation enhancement by inserting novel split electromagnetic bandgap (EBG) uniplanar structure is proposed. The meander-line antenna is coupled to a parasitic rectangular patch to achieve the dualband operation. Splits are applied on the surface of an EBG structure to cause decoupling at the first resonant mode and utilizing an EBG structure to decouple at the second resonant mode. The prototype of the proposed structure achieves a dual band of 180 MHz (3.42-3.6 GHz) and 400 MHz (4.7-5.1 GHz). The mutual coupling is significantly reduced by 26 and 44 dB at 3.48 and 4.88 GHz, respectively, compared to the reference antenna. In addition, the structure has high front-to-back ratio radiation characteristics.
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