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Broadband for handheld mobile devices / dual-band MIMO Antenna

Author: ZhouXiang
Tutor: LiRongLin
School: South China University of Technology
Course: Communication and Information System
Keywords: Broadband / Multiband Antenna MIMO system Antenna diversity Small antenna
CLC: TN828.6
Type: Master's thesis
Year: 2011
Downloads: 201
Quote: 0
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Abstract


As mobile communication service and type of the rapid development of the scale, MIMO technology is used to address the increasingly scarce spectrum resources to provide higher quality and at a faster rate communication services. MIMO technology, the idea is to create multiple parallel subchannels, utilization transmit diversity and receive diversity technology to achieve system channel capacity enhancement. Therefore, the multi-antenna design, especially on mobile devices will be designed to achieve the multi-antenna MIMO wireless communication is one of the key technologies. However, the mobile terminal the multi-antenna design is the difficulty of its outstanding limited volume within the space requirements of each antenna and a low correlation between the degree of coupling, and the array of antenna elements in the power received close to each other, so as to ensure effective diversity gain and channel capacity is close to the theoretical level. In addition, with the diverse needs of wireless terminal development, while working in a number of bands terminal system also appears to broadband / multi-band terminal antenna design has become a hot spot. Firstly, systematic and in-depth Overview of MIMO antenna performance. And the correlation coefficient, mean effective gain and other parameters of the system diversity gain and channel capacity of a systematic analysis, lay the foundation for further research. Secondly, the use of existing broadband antenna unit, based on the placement by way of its effect on system performance, devised to cover a frequency band of 1.65-2.6GHz broadband MIMO antenna, antenna scattering parameters of the system and MIMO performance were studied. The antenna has a low correlation and channel capacity loss, and the two branches similar to the received power, to ensure good MIMO antenna system performance. Since then, proposed a \On this basis, the array of antenna elements for MIMO proposed a new \The introduction of this structure can guarantee does not affect the operation of the antenna bandwidth and gain of the premise, to achieve cell isolation between two wide band greatly improved. After experiments, the antenna in providing broadband coverage while MIMO can provide good performance.

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CLC: > Industrial Technology > Radio electronics, telecommunications technology > Radio equipment,telecommunications equipment > Antenna > Antenna: zoning > Mobile communications antenna
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