Design and performance assessment of active phased arrays for communications satellites

Zaghloul, Amir I.; Gupta, Rakesh Kumar; Kohls, E.C.; Kıłıc, Özlem

doi:10.1109/past.2000.858939

Cited by 4 publications

(1 citation statement)

References 2 publications

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“…Two basic architectures of electronically steerable antennas with high gain and multiple-beam capability can be identified: the direct radiating array (DRA) and the array-fed reflector [2]. In the open literature some examples of active satellite phased-array antennas with multiple-beam capability can be found [3][4][5]. However, these solutions have too low gain and too small scan volume to be used for GEO data relays.…”

Section: Introductionmentioning

confidence: 99%

A Satellite Multiple-Beam Antenna for High-Rate Data Relays

Greda¹,

Winterstein²,

Dreher³

et al. 2014

PIER

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Abstract-This paper describes the concept and the development of key components of a novel multiple-beam antenna for satellite applications. The antenna is designed to be used in a transparent high-rate data relay system that links several low earth orbit (LEO) satellites to a single ground station via a satellite positioned on a geostationary orbit (GEO). The proposed antenna is based on the concept of an array-fed reflector. The antenna can track LEO satellites by switching between different subarrays of a bigger multifeed array using a reconfigurable switch matrix based on radio frequency micro-electromechanical system (RF MEMS) switches. The radiation characteristic of the antenna is further improved by combining digital beamforming with beam switching. In order to validate the proposed antenna concept and to show its suitability for space applications a demonstrator has been built. Measurements of the antenna's key components and of the demonstration system are given.

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Section: Introductionmentioning

confidence: 99%