volume | PIER Journals

2014-06-29

On the Scanning Properties of Imaging Antennas Based on Dual Confocal Paraboloidal Reflectors

Fabio Pelorossi,

Dr. Fabio Pelorossi

European Space Agency ESA-ESOC

Germany

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Giovanni Toso,

Dr. Giovanni Toso

Electromagnetic Division, TEC-EEA

European Space Agency, ESA ESTEC,

The Netherlands

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Piero Angeletti

Dr. Piero Angeletti

European Space Agcy

The Netherlands

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Progress In Electromagnetics Research M, Vol. 37, 95-107, 2014

doi:10.2528/PIERM14033104 | Google Scholar

Abstract

In this paper the scanning properties of dual reflector antenna systems constituted by two confocal paraboloidal reflectors fed by a planar array are investigated. This antenna architecture combines the interesting features of reflectors and array antennas. Because of the offset configuration the radiation pattern exhibits an anomalous deviation in the beam pointing when the beam is scanned out of the boresight direction. Heuristic equations, representing an extension of the linear equations available in the literature, are derived, which permit predicting the pointing direction of the overall system as a function of the pointing direction of the feeding array in a significant field of view.

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Fabio Pelorossi, Giovanni Toso, and Piero Angeletti, "On the Scanning Properties of Imaging Antennas Based on Dual Confocal Paraboloidal Reflectors," Progress In Electromagnetics Research M, Vol. 37, 95-107, 2014.
doi:10.2528/PIERM14033104

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