A Wide Scanning Array of Connected Bowtie Antennas Suitable for Integration in Composite Sandwich Structures With Monte-Carlo Tolerance Analysis

A low-profile and wide-scan phased-array antenna of connected cross-bowtie elements is proposed. The design goals and considerations are based on the applications requiring the integration of a large array antenna with composite sandwich structures, such as antennas on aircraft. In a very large arra...

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Autores principales: Prabhat Khanal, Jian Yang, Marianna Ivashina, Anders Hook, Ruoshan Luo
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Lenguaje:EN
Publicado: IEEE 2021
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spelling oai:doaj.org-article:accd3fbc8ca645f1bc5f555b0683d21c2021-11-09T00:02:57ZA Wide Scanning Array of Connected Bowtie Antennas Suitable for Integration in Composite Sandwich Structures With Monte-Carlo Tolerance Analysis2169-353610.1109/ACCESS.2021.3123439https://doaj.org/article/accd3fbc8ca645f1bc5f555b0683d21c2021-01-01T00:00:00Zhttps://ieeexplore.ieee.org/document/9590489/https://doaj.org/toc/2169-3536A low-profile and wide-scan phased-array antenna of connected cross-bowtie elements is proposed. The design goals and considerations are based on the applications requiring the integration of a large array antenna with composite sandwich structures, such as antennas on aircraft. In a very large array environment (modelled approximately as an infinite array), the main beam of the proposed antenna can be steered up to &#x00B1;75&#x00B0; at azimuth and &#x00B1;15&#x00B0; at elevation over bandwidths of 10&#x0025; and 25&#x0025; with active reflection coefficients below &#x2212;10 dB and &#x2212;5 dB, respectively. A Monte Carlo analysis of critical manufacturing and alignment tolerances shows the desired performance is achieved with the cumulative distribution probability over 80&#x0025; under the uniformly distributed random combinations of the tolerances. Experimental results of a <inline-formula> <tex-math notation="LaTeX">$7\times 7$ </tex-math></inline-formula> element array prototype agree well with the simulations of this small-scale array case. The experiments show that this small-scale prototype is capable of steering the beam within the range of [&#x2212;60&#x00B0;, 60&#x00B0;] at azimuth and [&#x2212;15&#x00B0;, 15&#x00B0;] at elevation with the predicted performance satisfying the targeted application requirements and mechanical constraints. The achieved combination of the wide beam steering performance, relatively low antenna profile, and suitability of its feeding structure for sandwiched electro-mechanical integration makes this design unique with respect to the previously published results.Prabhat KhanalJian YangMarianna IvashinaAnders HookRuoshan LuoIEEEarticleBowtie antennacomposite sandwich structureconnected arrayfuselage integrationphased arrayElectrical engineering. Electronics. Nuclear engineeringTK1-9971ENIEEE Access, Vol 9, Pp 146691-146702 (2021)
institution DOAJ
collection DOAJ
language EN
topic Bowtie antenna
composite sandwich structure
connected array
fuselage integration
phased array
Electrical engineering. Electronics. Nuclear engineering
TK1-9971
spellingShingle Bowtie antenna
composite sandwich structure
connected array
fuselage integration
phased array
Electrical engineering. Electronics. Nuclear engineering
TK1-9971
Prabhat Khanal
Jian Yang
Marianna Ivashina
Anders Hook
Ruoshan Luo
A Wide Scanning Array of Connected Bowtie Antennas Suitable for Integration in Composite Sandwich Structures With Monte-Carlo Tolerance Analysis
description A low-profile and wide-scan phased-array antenna of connected cross-bowtie elements is proposed. The design goals and considerations are based on the applications requiring the integration of a large array antenna with composite sandwich structures, such as antennas on aircraft. In a very large array environment (modelled approximately as an infinite array), the main beam of the proposed antenna can be steered up to &#x00B1;75&#x00B0; at azimuth and &#x00B1;15&#x00B0; at elevation over bandwidths of 10&#x0025; and 25&#x0025; with active reflection coefficients below &#x2212;10 dB and &#x2212;5 dB, respectively. A Monte Carlo analysis of critical manufacturing and alignment tolerances shows the desired performance is achieved with the cumulative distribution probability over 80&#x0025; under the uniformly distributed random combinations of the tolerances. Experimental results of a <inline-formula> <tex-math notation="LaTeX">$7\times 7$ </tex-math></inline-formula> element array prototype agree well with the simulations of this small-scale array case. The experiments show that this small-scale prototype is capable of steering the beam within the range of [&#x2212;60&#x00B0;, 60&#x00B0;] at azimuth and [&#x2212;15&#x00B0;, 15&#x00B0;] at elevation with the predicted performance satisfying the targeted application requirements and mechanical constraints. The achieved combination of the wide beam steering performance, relatively low antenna profile, and suitability of its feeding structure for sandwiched electro-mechanical integration makes this design unique with respect to the previously published results.
format article
author Prabhat Khanal
Jian Yang
Marianna Ivashina
Anders Hook
Ruoshan Luo
author_facet Prabhat Khanal
Jian Yang
Marianna Ivashina
Anders Hook
Ruoshan Luo
author_sort Prabhat Khanal
title A Wide Scanning Array of Connected Bowtie Antennas Suitable for Integration in Composite Sandwich Structures With Monte-Carlo Tolerance Analysis
title_short A Wide Scanning Array of Connected Bowtie Antennas Suitable for Integration in Composite Sandwich Structures With Monte-Carlo Tolerance Analysis
title_full A Wide Scanning Array of Connected Bowtie Antennas Suitable for Integration in Composite Sandwich Structures With Monte-Carlo Tolerance Analysis
title_fullStr A Wide Scanning Array of Connected Bowtie Antennas Suitable for Integration in Composite Sandwich Structures With Monte-Carlo Tolerance Analysis
title_full_unstemmed A Wide Scanning Array of Connected Bowtie Antennas Suitable for Integration in Composite Sandwich Structures With Monte-Carlo Tolerance Analysis
title_sort wide scanning array of connected bowtie antennas suitable for integration in composite sandwich structures with monte-carlo tolerance analysis
publisher IEEE
publishDate 2021
url https://doaj.org/article/accd3fbc8ca645f1bc5f555b0683d21c
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AT mariannaivashina awidescanningarrayofconnectedbowtieantennassuitableforintegrationincompositesandwichstructureswithmontecarlotoleranceanalysis
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AT andershook widescanningarrayofconnectedbowtieantennassuitableforintegrationincompositesandwichstructureswithmontecarlotoleranceanalysis
AT ruoshanluo widescanningarrayofconnectedbowtieantennassuitableforintegrationincompositesandwichstructureswithmontecarlotoleranceanalysis
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