科研之友
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摘要
This paper presents a long-term evolution (LTE) 700 MHz band multiple-input-multiple-output (MIMO) antenna, and high isolation between the two symmetrical antenna elements is obtained without introducing extra decoupling structure. Each antenna element is a combination antenna of PIFA and a meander monopole antenna. The end of the PIFA and the meander monopole antenna are, respectively, overlapped with the 50 Omega microstrip feed line, the two overlapping areas produce additional capacitance which can be considered decoupling structures to enhance the isolation for the MIMO antenna, as well as the impedance matching of the antenna elements. The MIMO antenna is etched on FR4 PCB board with dimensions of 71 x 40 x 1.6 mm(3); the edge-to-edge separation of the two antenna elements is only nearly 0.037 lambda at 700 MHz. Both simulation and measurement results are used to confirm the MIMO antenna performance; the operating bandwidth is 698-750 MHz with vertical bar S-11 vertical bar <= -6 dB and vertical bar S-21 vertical bar = -23 dB.
- 出版日期2015
- 单位中山大学
