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Simulations done in this work have been performed using CST Microwave Studio Suite 2018 under a cooperation agreement with Computer Simulation Technology (CST). This work was supported in part by the Spanish Government, Ministry of Economy, National Program of Research, Development and Innovation under the projects ENABLING5G "ENABLING INNOVATIVE RADIO TECHNOLOGIES FOR 5G NETWORKS" (project number TEC2014-55735-C31-R); FUTURE-RADIO "Radio systems and technologies for high capacity terrestrial and satellite communications in an hyperconnected work" (project number TEC2017-85529-C3-1R) and the Madrid Regional Government under the project SPADERADAR "Space Debris Radar" (S2013/ICE-3000).

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Design of Triangular-Latticed Sub-array Antenna Fed by Hexagonal Radial Line for K-band Applications

Publicado en:15th European Conference On Antennas And Propagation, Eucap 2021. - 2021-01-01 (), DOI: 10.23919/EuCAP51087.2021.9411097

Autores: Muriel-Barrado, AT; Pla-Terrada, OA; Sierra-Pérez, M; Fernández-González, JM

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Resumen

A circularly polarized double-stacked patch subarray hexagonal antenna fed by a radial line with internal circular coupling patches is proposed. The antenna works in K band (19.7 GHz - 20.2 GHz) with LHCP. The design approach consists of a coupling study based on the simulation of a periodic parallel-plate waveguide as a first approximation of the radial line. A phase compensation method by rotation is applied to adjust the radiating phase of each element of the subarray, which are separated 0.7 lambda(0). The subarray is uniformly fed in terms of amplitude and phase. An axial ratio below 1 dB is achieved for the entire frequency band, with a gain of 24 dB and a total efficiency of 87%.

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