期刊
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
卷 63, 期 5, 页码 2290-2295出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TAP.2015.2405091
关键词
Multiple-input multiple-output (MIMO); V-shaped dipole; wireless local area network (WLAN)
资金
- National Basic Research Program of China [2013CB329002]
- National High Technology Research and Development Program of China [2011AA010202]
- National Natural Science Foundation of China [61271135]
- National Science and Technology Major Project of the Ministry of Science and Technology of China [2013ZX03003008-002]
- China Postdoctoral Science Foundation [2013M530046]
A wideband printed dipole with V-shaped ground branches is proposed, which is designed for multiple-input multiple-output (MIMO) antennas. It is based on a dipole with an integrated balun, and V-shaped ground branches are introduced to improve the impedance matching. The bandwidth of this element reaches 62.3% (2.30-4.40 GHz), which covers all three WiMAX bands (2.30, 2.50, and 3.30 GHz) and the 2.40 GHz WLAN band. Based on this element, a quad-element MIMO antenna is designed and fabricated. By reusing the V-shaped ground structure between adjacent elements, the size of this quad-element antenna is only 0.31 lambda X 0.31 lambda X 0.01 lambda. Meanwhile, a bandwidth of 60.6% (2.30-4.30 GHz) is achieved, in which the S-11 < -10 dB, S-12 < -10 dB, and S-13 < -13 dB. Directional radiation patterns with 2.1 dBi average gain are attained, which are very stable throughout this band. This antenna system can be suitable for multielement MIMO devices such as wireless routers and adapters.
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