A Dual-Band Inverted-1 MIMO Antenna With Enhanced Isolation for WLAN Applications

作者：Deng, JingYa; Li, JinYong; Zhao, Luyu^*; Guo, Lixin

来源：IEEE Antennas and Wireless Propagation Letters, 2017, 16: 2270-2273.

DOI：10.1109/LAWP.2017.2713986

• Decoupling
• dual-band antenna
• inverted-F antenna
• multiple-input multiple-output (MIMO) antenna
• wireless local networks (WLAN) antenna

This letter presents a dual-band inverted-F multipleinput multiple-output (MIMO) antenna with improved isolation, covering the 2.4/5-GHz wireless local networks (WLAN) band. The proposed MIMO antenna is composed of two symmetrical winding inverted-F antenna elements. The two antenna elements are closely spaced with about 0.115 lambda(0) of the lower hand. The high isolation is achieved by building two decoupling devices, a meandering resonant branch and an inverted T-shaped slot etched on the ground for the higher hand and the lower hand, respectively. Furthermore, two U-shaped slits achieving better impedance matching are etched on the 50-Omega feeding lines to broaden the bandwidth of the high band. The impedance bandwidth (Si 1 < 10 dB) of the proposed antenna covers 2.4-2.48 GHz in the lower hand and 5.15-5.825 GHz in the upper band, and the proposed configuration obtains 15-dB isolation within the 2.4- and 5-GHz WLAN bands, which shows a significant improvement compared to the initial design of the MIMO antenna. The simulation and measurement results indicate that the proposed inverted-F MEMO antenna system is quite suitable for WLAN applications.

• 出版日期2017
• 单位西安电子科技大学