Measurement and Evaluation of Submillimeter-Wave Antenna Quasioptical Feed System by a Phase-Retrieval Method in the 640-GHz Band

Takeshi MANABE; Tomo FUKAMI; Toshiyuki NISHIBORI; Kazuo MIZUKOSHI; Satoshi OCHIAI

doi:10.1093/ietcom/e91-b.6.1760

Special Section on 2007 International Symposium on Antennas and Propagation

Measurement and Evaluation of Submillimeter-Wave Antenna Quasioptical Feed System by a Phase-Retrieval Method in the 640-GHz Band

Takeshi MANABE, Tomo FUKAMI, Toshiyuki NISHIBORI, Kazuo MIZUKOSHI, Satoshi OCHIAI

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Keywords: submillimeter wave, antenna feed system, offset Cassegrain antenna, phase retrieval, antenna measurement

JOURNAL RESTRICTED ACCESS

2008 Volume E91.B Issue 6 Pages 1760-1766

DOI https://doi.org/10.1093/ietcom/e91-b.6.1760

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Abstract

A phase-retrieval method is applied to the quasioptical feed system of the offset Cassegrain antenna of the Superconducting Submillimeter-Wave Limb-Emission Sounder (JEM/SMILES) to be aboard the International Space Station for evaluating the beam alignment by estimating the phase pattern from the beam amplitude pattern measurements. As the result, the application of the phase retrieval method is demonstrated to be effective for measuring and evaluating the quasioptical antenna feed system. It is also demonstrated that the far-field radiation pattern of the antenna main reflector can be estimated from the phase-retrieved beam pattern of the feed system.

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