Document
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A second-iteration square koch fractal slot antenna for UHF downlink telemetry applications in cubesat small satellites
type: Entity
origen: scopus
estado: published
e iscopus: 2-s2.0-85094877926
abstract: This article presents the design, fabrication, and measurement of a square Koch fractal slot antenna for UHF band using both the FR4-G10 and Cuclad 250 substrates. Conveniently, this 56.56 cm full-length antenna possesses a geometry that allows it to be incorporated into the standardized 10 cm × 10 cm faces of the CubeSats. Furthermore, it is shown that both selected substrates exhibit an acceptable performance at the frequency of interest despite the economic cost difference and relative permittivity. Hence, the commercial FR4-G10 antenna substrate can be preferred because of its low-cost and admissible performance at 458 MHz, which is a frequency in the UHF band that is commonly used for telemetry, tracking, and command downlinks of CubeSats. Measurements show that the proposed antenna exhibits a reflection coefficient of -16.53 dB, a bandwidth of 22.62 MHz at -10 dB, a VSWR of 1.3508, a normalized impedance of 0.794 - j0.173 at 50 Ω, and a directivity of 2.24 dBi. The contribution of this work consists in the use of a fractal geometry to construct a low-cost slot antenna working at UHF frequencies over the limited area of the CubeSat faces and in order to optimize the area for an eventual coexistence with solar cells. © 2020 Jorge Simon et al.
type: Information Content Entity
volume: 2020
date time value: article date 6622
related by: authorship_43224
crisid: 6622
has publication venue: International Journal of Antennas and Propagation
type: Generically Dependent Continuant
type: Thing
most specific type: Article
related by: authorship_43231
related by: authorship_43227
type: Document
doi: 10.1155/2020/9672959
type: Article
related by: authorship_43228
accesstype: All Open Access, Gold
type: Continuant
freetext keyword: Costs; Fractals; Satellite antennas; Small satellites; Substrates; Telemetering equipment; UHF devices; Acceptable performance; Antenna substrates; Economic costs; Fractal geometry; Koch fractals; Low costs; Normalized impedance; Relative permittivity; Slot antennas
most specific type: Document
related by: authorship_43225
related by: authorship_43230
artnum: 9672959
related by: authorship_43226
related by: authorship_43229

Continuant
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Generically Dependent Continuant
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RDF description of A second-iteration square koch fractal slot antenna for UHF downlink telemetry applications in cubesat small satellites - http://orbis.uaslp.mx/vivo/individual/scopus6621
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date: 2026-08-25T14:37:34
publisher: vivo
type: Document

Article
type: Class

Information Content Entity
type: Class

International Journal of Antennas and Propagation
publication venue for: A second-iteration square koch fractal slot antenna for UHF downlink telemetry applications in cubesat small satellites
type: Information Content Entity
type: Document
type: Generically Dependent Continuant
type: Thing
type: Entity
type: Collection
type: Continuant
type: Journal
type: Periodical