Wideband gain enhancement of slot antenna using one unprinted dielectric superstrate

B. A. Zeb; R. M. Hashmi; K. P. Esselle

doi:10.1049/el.2015.0932

Wideband gain enhancement of slot antenna using one unprinted dielectric superstrate

B. A. Zeb^*, R. M. Hashmi, K. P. Esselle

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

25 Citations (Scopus)

Abstract

A quarter-wavelength-thick unprinted dielectric slab is placed above a slot antenna to achieve high gain with a large bandwidth. By optimally truncating the high-permittivity superstrate to a small area of 2.25λ²₀, 8-10 dB enhancement in the directivity of the slot is achieved over a 3 dB directivity bandwidth of 16-18%. A prototype antenna was fabricated and tested at 11.5 GHz. Its measured peak gain is 16.95 dBi and the 3 dB gain bandwidth is 16.25%. The proposed antenna is simple and, more importantly, has a lower profile with a total height of 0.593λ_0,.

Original language	English
Pages (from-to)	1146-1147
Number of pages	2
Journal	Electronics Letters
Volume	51
Issue number	15
DOIs	https://doi.org/10.1049/el.2015.0932
Publication status	Published - 23 Jul 2015

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abstract = "A quarter-wavelength-thick unprinted dielectric slab is placed above a slot antenna to achieve high gain with a large bandwidth. By optimally truncating the high-permittivity superstrate to a small area of 2.25λ20, 8-10 dB enhancement in the directivity of the slot is achieved over a 3 dB directivity bandwidth of 16-18%. A prototype antenna was fabricated and tested at 11.5 GHz. Its measured peak gain is 16.95 dBi and the 3 dB gain bandwidth is 16.25%. The proposed antenna is simple and, more importantly, has a lower profile with a total height of 0.593λ0,.",

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