A near-zero refractive index meta-surface structure for antenna performance improvement

Research output: Contribution to journalArticle

34 Citations (Scopus)

Abstract

A new meta-surface structure (MSS) with a near-zero refractive index (NZRI) is proposed to enhance the performance of a square loop antenna array. The main challenge to improve the antenna performance is increment of the overall antenna volume that is mitigated by assimilating the planar NZRI MSS at the back of the antenna structure. The proposed NZRI MSS-loaded CPW-fed (Co-Planar Waveguide) four-element array antenna is designed on ceramic-bioplastic-ceramic sandwich substrate using high-frequency structure simulator (HFSS), a finite-element-method-based simulation tool. The gain and directivity of the antenna are significantly enhanced by incorporating the NZRI MSS with a 7 × 6 set of elements at the back of the antenna structure. Measurement results show that the maximum gains of the antenna increased from 6.21 dBi to 8.25 dBi, from 6.52 dBi to 9.05 dBi and from 10.54 dBi to 12.15 dBi in the first, second and third bands, respectively. The effect of the slot configuration in the ground plane on the reflection coefficient of the antenna was analyzed and optimized. The overall performance makes the proposed antenna appropriate for UHFFM (Ultra High Frequency Frequency Modulation) telemetry-based space applications as well as mobile satellite, microwave radiometry and radio astronomy applications.

Original languageEnglish
Pages (from-to)5058-5068
Number of pages11
JournalMaterials
Volume6
Issue number11
DOIs
Publication statusPublished - 2013

Fingerprint

Surface structure
Refractive index
Antennas
Antenna arrays
Radio astronomy
Loop antennas
Radiometry
Antenna grounds
Coplanar waveguides
Space applications
Antenna feeders
Frequency modulation
Telemetering
Simulators
Microwaves
Satellites
Finite element method
Substrates

Keywords

  • Meta-surface structure (MSS)
  • Multi band antenna
  • Near zero refractive index (NZRI)
  • Performance enhancement
  • Square loop

ASJC Scopus subject areas

  • Materials Science(all)

Cite this

A near-zero refractive index meta-surface structure for antenna performance improvement. / Ullah, Mohammad Habib; Islam, Mohammad Tariqul; Faruque, Mohammad Rashed Iqbal.

In: Materials, Vol. 6, No. 11, 2013, p. 5058-5068.

Research output: Contribution to journalArticle

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