A compact wideband circularly polarized fractal slot antenna with rectangular island for X-band satellite applications

A compact wideband circularly polarized fractal slot antenna with rectangular island for X-band satellite applications

AbstractThis paper introduces a compact, circularly polarized spidron-fractal slot antenna with a rectangular island. The reflection-coefficient |S11| of the proposed antenna covers the band from 7 GHz to 10 GHz. The proposed antenna is circularly polarized with an axial-ratio (AR) bandwidth that ex...

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Bibliographic Details
Published in:Cogent engineering Vol. 11; no. 1
Main Authors: Rabie, Mostafa Mahmoud, S. El-Gendy, Mohamed, R. Eldamak, Angie, Ibrahim, Fawzy, El-Henawy, Hadia
Format: Journal Article
Language:English
Published: Taylor & Francis Group 31-12-2024
Subjects:
Ai Qingsong
circular polarization
satellite applications
Slot antenna
wideband
Wuhan University of Technology
Online Access:Get full text
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Summary:AbstractThis paper introduces a compact, circularly polarized spidron-fractal slot antenna with a rectangular island. The reflection-coefficient |S11| of the proposed antenna covers the band from 7 GHz to 10 GHz. The proposed antenna is circularly polarized with an axial-ratio (AR) bandwidth that extends from 7 GHz to 10 GHz. It offers simultaneous dual circular polarization (RHCP and LHCP). The gain of the proposed antenna varies between 4 dBi and 6.9 dBi. The simulated efficiency reaches 97%. The overall dimensions of the antenna are 19.7 x 23 x 0.508 mm3 (0.55λ0 x 0.65λ0 x 0.014λ0), making it suitable for CubeSats with limited surface area. The proposed antenna can be employed for both the X-band satellite downlink (from 7.25 GHz to 7.75 GHz) and uplink (from 7.9 GHz to 8.4 GHz) frequency bands. Additionally, the antenna can be utilized in small satellite Synthetic-Aperture-Radar (SAR) systems operating from 9 GHz to 10 GHz, military applications, and RFID tag tracking-equipment. A prototype of the proposed antenna has been fabricated and then measured using Vector-Network-Analyzer (VNA) and inside an Anechoic chamber. The measurement results of the proposed antenna are in excellent match with the simulated results.
ISSN:2331-1916
2331-1916
DOI:10.1080/23311916.2024.2322813