Design optimisation of ring elements for broadband reflectarray antennas

Norbahiah Misran, R. Cahill, V. F. Fusco

Research output: Contribution to journalArticle

83 Citations (Scopus)

Abstract

Plane wave scattering from a flat surface consisting of two periodic arrays of ring elements printed on a grounded dielectric sheet is investigated. It is shown that the reflection phase variation as a function of ring diameter is controlled by the difference in the centre resonant frequency of the two arrays. Simulated and measured results at X-band demonstrate that this parameter can be used to reduce the gradient and improve the linearity of the reflection phase versus ring size slope. These are necessary conditions for the re-radiating elements to maximise the bandwidth of a microstrip reflectarray antenna. The scattering properties of a conventional dual resonant multilayer structure and an array of concentric rings printed on a metal backed dielectric substrate are compared and the trade-off in performance is discussed.

Original languageEnglish
Pages (from-to)440-444
Number of pages5
JournalIEE Proceedings: Microwaves, Antennas and Propagation
Volume150
Issue number6
DOIs
Publication statusPublished - Dec 2003
Externally publishedYes

Fingerprint

Scattering
Antennas
Microstrip antennas
Natural frequencies
Multilayers
Bandwidth
Substrates
Metals
Design optimization

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Computer Networks and Communications

Cite this

Design optimisation of ring elements for broadband reflectarray antennas. / Misran, Norbahiah; Cahill, R.; Fusco, V. F.

In: IEE Proceedings: Microwaves, Antennas and Propagation, Vol. 150, No. 6, 12.2003, p. 440-444.

Research output: Contribution to journalArticle

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