A new configuration of polarization-rotating dual-beam interferometer for space use

This paper presents a new configuration of quasi-optical polarization-rotating dual-beam interferometer, which uses a pair of frequency-selective polarizers (FSPs) consisting of a wire-grid placed in front of a flat mirror, and has a function similar to the conventional Martin-Puplett interferometer...

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Bibliographic Details
Published in:IEEE transactions on microwave theory and techniques 2003-06, Vol.51 (6), p.1696-1704
Main Authors: Manabe, T., Inatani, J., Murk, A., Wylde, R.J., Seta, M., Martin, D.H.
Format: Article
Language:English
Subjects:
Devices
Frequency
Interferometers
Mathematical analysis
Microwaves
Optical interferometry
Optical polarization
Optical receivers
Optical reflection
Optical sensors
Physics
Polarizers
Ports
Radio interferometry
Receivers
Reflection
Submillimeter wave filters
Wire
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Summary:This paper presents a new configuration of quasi-optical polarization-rotating dual-beam interferometer, which uses a pair of frequency-selective polarizers (FSPs) consisting of a wire-grid placed in front of a flat mirror, and has a function similar to the conventional Martin-Puplett interferometer (MPI). Advantages of this new configuration over the conventional MPI are lower residual reflection at the input and output ports and suitability to fixed-tuned applications. An experiment has shown it to have an MPI-like frequency characteristic as calculated. Careful machining was successful in achieving accuracy needed for a specified filter characteristic. This FSP-based quasi-optical device is to be used as a sideband separator in a space-borne submillimeter receiver for atmospheric research.
ISSN:0018-9480
1557-9670
DOI:10.1109/TMTT.2003.812567