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Electronically reconfigurable parasitic antenna array for pattern selectivity

Farran, Mohamad
•
Al‐Husseini, Mohammed
•
Kabalan, Karim
altro
Boscolo, Stefano
2019
  • journal article

Periodico
THE JOURNAL OF ENGINEERING
Abstract
Antenna arrays are commonly used to achieve high gains and beam steering, but they require complex feeding networks. For applications demanding moderate antenna gains (similar or equal to 6 dB) and planar radiating structures, printed Yagi-Uda antennas can offer many advantages, but clearly, they cannot cover the whole azimuth plane. A symmetric structure made of two Yagi-Uda antennas with two active elements, a shared reflector and two directors of variable length is here presented and demonstrated to have switched beams that cover all the azimuth plane. By lengthening the physical lengths of the directors, they turn to act as reflectors: as a result, this antenna system has the ability to switch between broadside, bidirectional end-fire and two opposite end-fire patterns. The feeding is provided by a balanced parallel strip-slot line without the need for a balun section and thus reducing the overall size of the antenna. A modified design is also presented, obtained by adding a reflector board which allows for higher gains and focused radiation reconfigurability in the half-space. Simulated and measured results of both designs are reported showing good agreement. The antenna has a compact size, wideband characteristics and directive pattern reconfigurability.
DOI
10.1049/joe.2018.5141
WOS
WOS:000457372900001
Archivio
http://hdl.handle.net/11390/1200986
Diritti
open access
Soggetti
  • Yagi antenna array

  • broadband antenna

  • antenna radiation pat...

  • antenna feed

  • balun

  • beam steering

  • reconfigurable parasi...

  • pattern selectivity

  • beam steering

  • complex feeding netwo...

  • planar radiating stru...

  • printed Yagi-Uda ante...

  • azimuth plane

  • symmetric structure

  • active element

  • shared reflector

  • director

  • variable length

  • switched beam

  • physical length

  • antenna system

  • bidirectional end-fir...

  • opposite end-fire pat...

  • balanced parallel str...

  • reflector board

  • focused radiation rec...

  • directive pattern rec...

Web of Science© citazioni
1
Data di acquisizione
Mar 19, 2024
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