Abstract
This paper discusses about the Design and challenges associated with multiple input multiple output (MIMO) antenna. Additional degree of freedom is provided by MIMO with multiple antenna placed near to each other. As UWB technology suffers from Multipath fading, this problem is easily resolved with MIMO technology. Mutual coupling is another problem associated with MIMO systems, this reduces antenna efficiency. MIMO technology is advantageous for data transmission problems so there are great challenges in this technology In this paper study of various parameters like isolation, ECC, peak gain, mutual coupling etc. has been done. Here we present a comprehensive survey on MIMO antenna for wireless communication. Another important issue related with compact MIMO (multiple input multiple output) is space constraint and structure of antenna array. as MIMO antennas are closely spaced, performance of MIMO antenna is reduced due high signal correlation as well as antenna efficiency is reduced. The main aim of the work is to give an idea regarding the recent trends and technologies used in MIMO antenna design and challenges.
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