期刊
IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS
卷 7, 期 -, 页码 142-144出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LAWP.2008.919341
关键词
Compact antennas; four-port antenna
资金
- Hong Kong Research Grants Council [RGC 618005]
In this letter, a compact four-port antenna structure with an area of 40 x 40 and constructed from inexpensive FR-4 printed circuit board is described. The antennas operate at 2.48 GHz, and in terms of wavelengths have a compact overall area of 0.33 lambda(o) x 0.33 lambda(o) and this would usually result in very strong mutual coupling between the four antenna ports. However, in our proposed structure, the mutual coupling between antenna elements is better than -10 dB. Although this is not low mutual coupling by some standards it is suitable for multiple-input-multiple-output (MIMO) communications in portable devices as verified by our experimental MIMO testbed capacity results. Furthermore measurements and characteristics of the antenna structures are provided.
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