Reconfigurable Filtennas and MIMO in Cognitive Radio Applications

TLDR

The study proposes reconfigurable filtennas for MIMO cognitive radio systems and compares them with software‑defined radio approaches. The authors design, test, and compare antenna examples for spectrum‑interweave and spectrum‑underlay cognitive radio, illustrating the use of reconfigurable filtennas in MIMO configurations. The results demonstrate that reconfigurable filtennas in MIMO cognitive radio improve performance, and the authors conclude that this approach is advantageous.

Abstract

In this paper cognitive radio is described, discussed and compared with software defined radio (SDR). The two types of cognitive radio are presented and examples on both spectrum interweave and spectrum underlay cognitive radio antenna systems are detailed. Reconfigurable filtennas are proposed as communicating antennas in a MIMO setting for both cases of cognitive radio. The benefits of resorting to filtennas as well as to MIMO configuration is shown and discussed herein. The various antenna examples are designed, tested and compared with each other. Conclusions are drawn based on the presented results.