Low-RCS Ka-band receiving and transmitting satellite communication antennas co-designed with high-performance absorbent frequency-selective radomes

Xing, Zhiyu; Yang, Feng; Yang, Jianhua; Zhu, Xiyuan

doi:10.1080/09205071.2022.2118086

Cited by 4 publications

(7 citation statements)

References 18 publications

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Section: Introductionmentioning

confidence: 99%

“…The losses occur due to the polarization process of the medium in the external electric field due to EM wave energy loss [15]. Radome materials provide hindrance to electromagnetic waves [16] by reflection and absorption which cause energy loss, resulting in a reduction in communication performance [17]. Furthermore, apart from dielectric properties, many other requirements must be satisfied before the use of polymer materials in high-speed communications [18].…”

Section: Introductionmentioning

confidence: 99%

“…Low E r polymers that can be used in highspeed communication equipment [18] includes polyimides, bismaleimide, epoxy, phenolic, poly(benzoxazole)s, poly(arylether)s, poly(tetrafluoroethylene), and polyester resin [18] which allow us to make customized shapes of radomes with good performances [19,20]. Epoxy resins are potentially and economically more appealing [20] for preparing low E r and δ composites [21] as they have the least impact on signal transmission [16]. However, above ambient conditions, their properties can deviate due to their dimensional instability [22] which limits their use in radomes at higher service temperatures [23].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Investigation of Dielectric, Mechanical, and Thermal Properties of Epoxy Composites Embedded with Quartz Fibers

Haider,

Gul,

Faraz

et al. 2023

Polymers

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Polymer matrix wave transparent composites are used in a variety of high-speed communication applications. One of the applications of these involves making protective enclosures for antennas of microwave towers, air vehicles, weather radars, and underwater communication devices. Material performance, structural, thermal, and mechanical degradation are matters of concern as advanced wireless communication needs robust materials for radomes that can withstand mechanical and thermal stresses. These polymer composite radomes are installed externally on antennas and are exposed directly to ambient as well as severe conditions. In this research, epoxy resin was reinforced with a small amount of quartz fibers to yield an improved composite radome material compared to a pure epoxy composite with better thermal and mechanical properties. FTIR spectra, SEM morphology, dielectric constant (Ɛr) and dielectric loss (δ), thermal degradation (weight loss), and mechanical properties were determined. Compared to pure epoxy, the lowest values of Ɛr and δ were 3.26 and 0.021 with 30 wt.% quartz fibers in the composite, while 40% less weight loss was observed which shows its better thermal stability. The mechanical characteristics encompassing tensile and bending strength were improved by 42.8% and 48.3%. In high-speed communication applications, compared to a pure epoxy composite, adding only a small quantity of quartz fiber can improve the composite material’s dielectric performance, durability, and thermal and mechanical strength.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Investigation of Dielectric, Mechanical, and Thermal Properties of Epoxy Composites Embedded with Quartz Fibers

Haider,

Gul,

Faraz

et al. 2023

Polymers

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“…However, most of the MMAs that have been designed so far have a fixed operating bandwidth, which means that they can only work in a limited area. For example, absorbers designed in the X-band (8-12 GHz) and Kuband (12-18 GHz) can be used as absorbing microwave radars [29][30][31] to reduce the RCS of a target and reduce the chance of detection by the enemy, while millimeter wave radars operating in the Ka (27)(28)(29)(30)(31)(32)(33)(34)(35)(36)(37)(38)(39)(40) band are also being used on the battlefield as detection technology continues to develop [32]. Designed in the C-band (4-8 GHz) or Ku-band MMAs can be used in satellite communications [33][34][35], but with the increasing depletion of satellite orbit resources in C and Ku-band, satellite communications in Ka-band have become a latecomer [36].…”

Section: Introductionmentioning

confidence: 99%

“…For example, absorbers designed in the X-band (8-12 GHz) and Kuband (12-18 GHz) can be used as absorbing microwave radars [29][30][31] to reduce the RCS of a target and reduce the chance of detection by the enemy, while millimeter wave radars operating in the Ka (27)(28)(29)(30)(31)(32)(33)(34)(35)(36)(37)(38)(39)(40) band are also being used on the battlefield as detection technology continues to develop [32]. Designed in the C-band (4-8 GHz) or Ku-band MMAs can be used in satellite communications [33][34][35], but with the increasing depletion of satellite orbit resources in C and Ku-band, satellite communications in Ka-band have become a latecomer [36]. In the field of antennas, more and more researchers have proposed frequency-reconfigurable antennas across bands [37][38][39], such as Li et al who proposed a reconfigurable antenna that operates at the frequency band can be switched from X-band to Ka-band [40].…”

Section: Introductionmentioning

confidence: 99%

A transparent water-based metamaterial broadband absorber with a tunable absorption band

Yao¹,

Qu²,

Duan³

et al. 2022

Phys. Scr.

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In this study, a tunable and optically transparent water-based wideband metamaterial absorber (MMA) is proposed and verified. By adjusting the thickness of the water layer, the conversion of the absorber absorption band from 7.4-22.4 GHz to 23.1-35.5 GHz can be achieved, which demonstrates the flexibility of MMA. Indium tin oxide (ITO) as the resonant and reflective layers of the material structure. Optically transparent polymethyl methacrylate (PMMA) is used as a medium container to encapsulate the water. Furthermore, the suggested MMA is polarization insensitive and has broad incident angle stability. Experiments verify the excellent properties of the proposed MMA. As a result, the suggested MMA has various applications in military and medical equipment optical windows.

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Radiofrequency and optical satellite link budgeting calculator

Rosas-Palacios,

Casillas-Aviña,

Yáñez-Casas

et al. 2024

J. Phys.: Conf. Ser.

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Satellite communications represent one of the most widely used communication systems nowadays. From the 50’s of 20th century up to the present, the demand for satellite services has increased rapidly, so the need to design and implement reliable, up-to-date systems that meet the needs of users is increasingly imperative. Technological progress also implies a better use of the radio spectrum and the incorporation of benefits in terms of transmission performance. Traditionally, satellite systems have been implemented in the range corresponding to radio frequency, and more recently, special attention has been paid to the exploration of the spectrum corresponding to optical communications, due to the superior benefits that it offers, despite the set of challenges that its implementation represents. Such advances demand the greatest certainty of operation even from the conception and design stage of the transmission system, since satellite communications are not prone to constant changes and maintenance. The calculation process known as link budget is a tool present in the design of any wireless communications system, and its results determine the efficiency and reliability of the design. However, due to the large number of manufacturers and operators, as well as considering the novelty of using high-performance optical systems, it is difficult to stick to a single method or even to point out one as totally reliable and simple to use. With the purpose of expediting the calculation of link budgets, there are various computational tools that allow this process to be carried out. However, these tools carry the problem of poor compatibility, differences and a low degree of reliability and ease of use. In the present work, the construction and use of a web application is proposed that includes the link budget calculation process for both radio and optical satellite systems, flexible, simple, user-friendly, compatible, and mainly, abode to standardised and documented models for provide reliability and accuracy.

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Low-RCS Ka-band receiving and transmitting satellite communication antennas co-designed with high-performance absorbent frequency-selective radomes

Cited by 4 publications

References 18 publications

Investigation of Dielectric, Mechanical, and Thermal Properties of Epoxy Composites Embedded with Quartz Fibers

Investigation of Dielectric, Mechanical, and Thermal Properties of Epoxy Composites Embedded with Quartz Fibers

A transparent water-based metamaterial broadband absorber with a tunable absorption band

Radiofrequency and optical satellite link budgeting calculator

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