Abstract
This chapter discusses different key issues related to the actual design and implementation of parasitic antenna arrays for the novel beamspace-MIMO concept. The proposed design strategies are illustrated by a concrete operational prototype. The chapter also briefly discusses the possibility of considering realistic antenna elements for practical portable applications as well as the effects of the operating environment on the system performance.
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- 1.
Namely, a functionality similar to that of a usual antenna arrays fed by an feed network embedding RF phase shifters.
- 2.
Importantly, this very prototype is the one used in the next chapter (Chap. 7: Over-the-air Proof of Concepts) to experimentally demonstrate the multiplexing of different signals over-the-air using a parasitic antenna array.
- 3.
Overall efficiency is defined here as the product of radiation and mismatch efficiencies.
- 4.
However, in both case the modeling approach described in Sect. 6.2.2 should obviously be used.
- 5.
By “reactance space” we mean, for example in the case of a varactors-controlled parasitic antenna array, the (N-1)-dimensional space of the control voltages, where N-1 is the number of parasitic reactances of the parasitic antenna array.
- 6.
Another issue, beyond the scope of this chapter, is the possibility to control the load change for optimal pulse shaping.
- 7.
The control circuitry can however influence the switching speed, in other words, impact on the maximum signaling rate and pulse shaping.
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Perruisseau-Carrier, J., Yousefbeiki, M. (2014). Design and Implementation of Parasitic Antenna Arrays for Beamspace-MIMO. In: Kalis, A., Kanatas, A., Papadias, C. (eds) Parasitic Antenna Arrays for Wireless MIMO Systems. Springer, New York, NY. https://doi.org/10.1007/978-1-4614-7999-4_6
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