By Constantinos B. Papadias (auth.), Antonis Kalis, Athanasios G. Kanatas, Constantinos B. Papadias (eds.)
This booklet unites various applied sciences: parasitic antenna arrays pushed through analogue circuits that keep an eye on the electromagnetic waves generated via the antenna array; and MIMO know-how for multi-antenna arrays, in general pushed via electronic recommendations within the baseband area. the combo of those applied sciences has published a singular performance that breaks in the course of the traditional MIMO paradigm, permitting MIMO transmission over the air with using antenna arrays that can include just a unmarried energetic point, that's surrounded via a couple of passive neighboring antennas. The contributions within the booklet exhibit the aptitude of such structures to additionally practice MIMO transmission. This truth holds the possibility of revolutionizing the best way small-form instant terminals function and turns out to set the scene for a win-win state of affairs, attaining MIMO transmission with very small and inexpensive antenna arrays. The e-book is based to supply a well-rounded therapy of many of the elements of this newly came upon instant verbal exchange strength. All suitable technical angles, starting from info theoretic to electromagnetic concerns; from analogue circuit to electronic baseband keep watch over for sign iteration; and from channel modeling to conversation theoretic features are taken under consideration. a great stability among conception, functional issues and over-the-air experimentation is proposed and mirrored within the bankruptcy define. eventually, a dialogue and early proof regarding power functions in addition to the relevance to present and upcoming instant criteria is provided.
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Extra info for Parasitic Antenna Arrays for Wireless MIMO Systems
On one hand, an antenna array would be able to control its radiation characteristics on the fly, by altering the amplitude and phase characteristics of the signals fed to the different antenna ports. For example, the two-element dipole array shown in Fig. 9 could concentrate the transmitted signal power either to the left or to the right of the page, by simply changing the phase difference between the two feeds. On the other hand, the design of antenna arrays poses additional constraints to the antenna designer: power fed to one of the array elements is induced to the other array elements.
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