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2 results on '"Affan A Baba"'

1. A Stripline-Based Planar Wideband Feed for High-Gain Antennas with Partially Reflecting Superstructure

Author

Affan A Baba, Raheel M Hashmi, Mohsen Asadnia, Ladislau Matekovits, and Karu P Esselle

Subjects
high-gain, compact, wideband, resonant cavity, Fabry–Perot cavity, cavity resonator, EBG resonator, Mechanical engineering and machinery, TJ1-1570
Abstract

This paper presents a new planar feeding structure for wideband resonant-cavity antennas (RCAs). The feeding structure consists of two stacked dielectric slabs with an air-gap in between. A U-shaped slot, etched in the top metal-cladding over the upper dielectric slab, is fed by a planar stripline printed on the back side of the dielectric slab. The lower dielectric slab backed by a ground plane, is used to reduce back radiation. To validate the wideband performance of the new structure, in an RCA configuration, it was integrated with a wideband all-dielectric single-layer partially reflecting superstructure (PRS) with a transverse permittivity gradient (TPG). The single-layer RCA fed by the U-slot feeding structure demonstrated a peak directivity of 18.5 dBi with a 3 dB directivity bandwidth of 32%. An RCA prototype was fabricated and experimental results are presented.

Published
2019
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2. A Stripline-Based Planar Wideband Feed for High-Gain Antennas with Partially Reflecting Superstructure

Author

Mohsen Asadnia, Affan A. Baba, Raheel M Hashimi, Karu P. Esselle, and Ladislau Matekovits

Subjects
Permittivity, high-gain, Materials science, compact, lcsh:Mechanical engineering and machinery, 02 engineering and technology, Dielectric, EBG resonator, Directivity, Article, Fabry–Perot cavity, Planar, Optics, resonant cavity, 0202 electrical engineering, electronic engineering, information engineering, cavity resonator, lcsh:TJ1-1570, Electrical and Electronic Engineering, Wideband, Ground plane, business.industry, Mechanical Engineering, 020208 electrical & electronic engineering, Bandwidth (signal processing), 020206 networking & telecommunications, wideband, Control and Systems Engineering, business, Stripline
Abstract

© 2019 by the authors. This paper presents a new planar feeding structure for wideband resonant-cavity antennas (RCAs). The feeding structure consists of two stacked dielectric slabs with an air-gap in between. A U-shaped slot, etched in the top metal-cladding over the upper dielectric slab, is fed by a planar stripline printed on the back side of the dielectric slab. The lower dielectric slab backed by a ground plane, is used to reduce back radiation. To validate the wideband performance of the new structure, in an RCA configuration, it was integrated with a wideband all-dielectric single-layer partially reflecting superstructure (PRS) with a transverse permittivity gradient (TPG). The single-layer RCA fed by the U-slot feeding structure demonstrated a peak directivity of 18.5 dBi with a 3 dB directivity bandwidth of 32%. An RCA prototype was fabricated and experimental results are presented.

Published
2019

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