Work

Ridged Apertures for LEO Direct Radiating Arrays in Ka-Band

Year: 2024

Type: article

Abstract: This paper presents an extensive performance analysis of open-ended waveguide elements for direct radiating arrays with high scan angle (± 50º/60º). The evaluated designs are based on square and hexagonal apertures loaded with ridges. Both square and triangular lattices are considered in the framework of Ka-band downlink design requirements for future LEO mega-constellations. The parameter space defined by the monomodal condition has been explored to find an optimum value for each structure. The analyses are validated with both infinite and finite full-wave models in terms of active reflection coefficient, scan loss and cross-polar discrimination.

Source: Applied Sciences

DOI: 10.3390/app14177825

Authors: Carlos Vazquez-Sogorb, Roger Montoya-Roca, Giuseppe Addamo, Oscar Peverini, Giuseppe Virone

Institutions: Institute of Electronics, Computer and Telecommunication Engineering, National Research Council

Language: English

Topic: Microwave Engineering and Waveguides

Subfield: Electrical and Electronic Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $2,728

Funders: European Commission, HORIZON EUROPE Marie Sklodowska-Curie Actions