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A novel circularly polarized slotted substrate integrated waveguide antenna array for satellite applications.

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Title: A novel circularly polarized slotted substrate integrated waveguide antenna array for satellite applications.
Authors: Eid, Alla M.1, Salama, Amgad A.1 amgad.salama@ieee.org, Elkamchouchi, Hassan M.1
Source: IET Microwaves, Antennas & Propagation (Wiley-Blackwell). Jul2021, Vol. 15 Issue 8, p925-936. 12p.
Subjects: Substrate integrated waveguides, Waveguides, Spiral antennas, Omnidirectional antennas, Bandwidths
Abstract: In this article, three novel slotted substrate integrated waveguide (SIW) antenna elements are demonstrated with different radiator configurations, namely, two arms Archimedean antenna, single‐arm spiral antenna (monofilar), and four concentric circular loops antenna. Additionally, their near, as well as far‐field characteristics, have been investigated. The two arms Archimedean spiral antenna has a superior radiation characteristic of 18% return loss bandwidth (RLBW), 12% boresight axial ratio bandwidth (ARBW), and five dBi directivity. Furthermore, a 1 × 10 slotted SIW travelling wave antenna array has been designed, fabricated, and measured. The performance of the proposed antenna array versus the last reported antenna was evaluated and the proposed antenna array performance is superior to that of the others. Moreover, the measurements of the proposed array have a good agreement with the simulation results in which, 35%, 13% RLBW, and ARBW, respectively, have been achieved. The directivity of the proposed antenna array is 14 dBi. [ABSTRACT FROM AUTHOR]
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Database: Engineering Source
Description
Abstract:In this article, three novel slotted substrate integrated waveguide (SIW) antenna elements are demonstrated with different radiator configurations, namely, two arms Archimedean antenna, single‐arm spiral antenna (monofilar), and four concentric circular loops antenna. Additionally, their near, as well as far‐field characteristics, have been investigated. The two arms Archimedean spiral antenna has a superior radiation characteristic of 18% return loss bandwidth (RLBW), 12% boresight axial ratio bandwidth (ARBW), and five dBi directivity. Furthermore, a 1 × 10 slotted SIW travelling wave antenna array has been designed, fabricated, and measured. The performance of the proposed antenna array versus the last reported antenna was evaluated and the proposed antenna array performance is superior to that of the others. Moreover, the measurements of the proposed array have a good agreement with the simulation results in which, 35%, 13% RLBW, and ARBW, respectively, have been achieved. The directivity of the proposed antenna array is 14 dBi. [ABSTRACT FROM AUTHOR]
ISSN:17518725
DOI:10.1049/mia2.12100