Reconfigurable high-gain antennas for wireless communications

Reconfigurable high-gain antennas for wireless communications

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In this chapter, an overview of the recent development of reconfigurable high-gain antennas is presented. These antennas range from reconfigurable Yagi antennas, reconfigurable reflectarrays and reconfigurable transmitarrays to reconfigurable PRS antennas. It is demonstrated that PRS antennas are able to reconfigure their frequency, polarization and radiation patterns with high realized gains. Compared with RA arrays, reconfigurable reflectarrays and transmitarrays, it is much easier for reconfigurable PRS antennas to achieve various reconfigurations with a simpler biasing network. In order to fully exploit the diversities of antennas in wireless communication and radar systems, compound reconfigurations of two or three antenna parameters are highly desired. However, there have been no reported products employing such combined RAs. Since PRS antennas have more freedom of parameters (a single feeding source/feeding source arrays and a PRS structure), the above challenge could be addressed by allocating different reconfigurations to different parts. As this work progresses, there is no doubt that fully reconfigurable PRS antennas will deliver significant benefits to practical wireless systems in future.

Chapter Contents:

  • 6.1 Introduction
  • 6.2 Reconfigurable array antennas
  • 6.3 Reconfigurable PRS antennas
  • 6.3.1 Frequency-reconfigurable PRS antenna
  • 6.3.2 Pattern-reconfigurable PRS antenna
  • 6.3.3 Polarization-reconfigurable PRS antenna
  • 6.4 Conclusions
  • References

Inspec keywords: polarisation; directive antennas; transmitting antennas; antenna radiation patterns; radar antennas; reflectarray antennas; Yagi antenna arrays; mobile antennas

Other keywords: RA arrays; practical wireless systems; reconfigurable PRS antennas; single feeding source; radar systems; polarization patterns; radiation patterns; wireless communications; PRS structure; feeding source arrays; reconfigurable high-gain antennas; freedom of parameters; reconfigurable reflectarrays; reconfigurable transmitarrays; reconfigurable Yagi antennas

Subjects: Single antennas; Antenna arrays; Antenna theory

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