期刊
IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS
卷 10, 期 -, 页码 310-313出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LAWP.2011.2140310
关键词
Mirostrip antennas; multiple-input-multiple-output (MIMO); mutual coupling
资金
- Natural Science Foundation of China [61001029, 10876007]
An efficient mutual coupling reduction method is introduced in this letter for extremely closely placed dual-element microstrip antennas positioned on a finite-sized ground plane for WLAN MIMO application at 5.8 GHz. High isolation can be achieved through a simple slot structure on the ground between the microstrip antennas. The position, length, and width of the slot have been optimized for maximizing the isolation. It is found that more than 40 dB isolation can be achieved between two parallel microstrip antennas sharing a common ground plane. The space distance of these antennas is 17.5 mm approximate to 0.33 lambda(0) from element center to center (side by side of 1.6 mm approximate to 0.031 lambda(0)) when the ground plane size is 0.85 lambda(0) x 0.55 lambda(0). Along with this letter, several prototypes were fabricated, and their performances measured to validate the obtained IE3D moment method-based simulation results.
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