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A microwave interferometer based contactless quasi-TEM waveguide position encoder with micrometer accuracy
Publikationstyp
Conference Paper
Date Issued
2014-06
Sprache
English
TORE-URI
Article Number
6848655
Citation
IEEE MTT-S International Microwave Symposium Digest: 6848655 (2014-06)
Contribution to Conference
Publisher DOI
Position measurement plays an important role in industrial process technology. Hereby, a waveguide based position sensor system for industrial applications is described. The proposed system features a Phase Locked Loop controlled 24 GHz signal source, an interferometric Six-Port receiver structure, a radar coupler, and a terminated quasi-TEM parallel plate waveguide structure. Furthermore, the system concept comprises a target, which can be applied both touching and contactless in the waveguide's fringing field, reflecting a part of the transmitted wave. To obtain the target's position information, the reflected wave is compared to a reference signal with respect to the relative phase difference. Hence, this phase shift is directly related to the position information
Subjects
Interferometer
microwave measurement
parallel plate waveguide
phase measurement
position encoder
RADAR
Six-Port