Vertically Printable Evanescent Mode Filters

Polo‐López, Lucas; Sirci, Stefano; Calleau, Antoine; Capdevila, S.; Toso, Giovanni; Menargues, Esteban; Garcia-Vigueras, María

doi:10.1109/lmwc.2022.3187781

Cited by 8 publications

(2 citation statements)

References 19 publications

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“…At first, AM technologies have been investigated for the development of stand-alone components relevant to satellite communication payloads, including straight and meander waveguides [47], [48], filters [49], [50], [51], [52], [53], [54], ortho-mode transducers/polarizers [55], [56], [57], [58], [59], and radiating elements, such as helix/quad-ridge antennas [23], [60], [61], and feed horns [57], [62]. Investigations on the multipactor performance of AM components have also been carried out [63].…”

Section: D-printed Components and Rf Front-ends For Space A Stand-alo...mentioning

confidence: 99%

How 3D-Printing Is Changing RF Front-End Design for Space Applications

et al. 2023

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3D-printing is leading to a major transformation in many industrial and application sectors, ranging from medical to aerospace. In the space sector, 3D-printing has firstly been adopted for the development of structural and thermal parts, such as brackets and heat pipes. In more recent years, thanks to improvements in precision and surface roughness, 3D-printing technologies have steadily been investigated also for the development of radio frequency components and advanced payloads. Indeed, the unique features of 3D-printing, including the free-form capability and the ease for customization, make these manufacturing technologies very appealing in the development of complex radio-frequency front-ends for space applications, including New Space constellations and next generation software-defined communication satellites. They also enable a drastic simplification of mechanical designs by reducing the number of interfaces and assembling screws of large radio-frequency front-ends, thus leading to significant mass savings and higher integration. This paper briefly reports on recent advances in 3D-printing that have been carried out according to the current trends in radio-frequency front-ends for satellite communications.

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Section: D-printed Components and Rf Front-ends For Space A Stand-alo...mentioning

confidence: 99%

How 3D-Printing Is Changing RF Front-End Design for Space Applications

et al. 2023

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“…in a single part). This requires to make certain modifications to the ridges in order to enable vertical 3D printing [36]. For this second design, two identical prototypes have been manufactured to assess their repeatability.…”

Section: B Experimental Demonstratormentioning

confidence: 99%

Solving Sub-Wavelength Lattice Reduction in Full-Metal Front-Ends for Dual-Polarized Active Antennas

Polo‐López

Menargues²,

Capdevila³

et al. 2022

IEEE Trans. Antennas Propagat.

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This paper proposes an original structure of evanescent quad-ridge antenna to conceive dual-polarized full-metal front-ends that can be used in active antennas with wide field-ofview. An original design methodology is here proposed that allows to induce radiation from sub-wavelength squared apertures based on the use of evanescent and quad-ridge waveguides. The proposal is illustrated by means of a design with 4.5% bandwidth providing dual-circular polarization with good performance up to 50 o -scanning even in the diagonal plane. For comparison purposes, a metallic benchmark is also proposed, which is based on the use of classical quad-ridge horns. Such comparative analysis allows to understand the superior performance of the proposed concept and its main advantage: it allows to avoid the excitation of the first high order mode in the squared quadridge aperture. The excitation of such spurious mode in the antenna is explained in terms of simple equivalent circuit models characterizing the aperture periodic discontinuity.

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