Characterization of Reconfigurable LC-Reflectarrays Using Near-Field Measurements

Konferenz: GeMiC 2009 - German Microwave Conference
16.03.2009 - 18.03.2009 in München, Germany

Tagungsband: GeMiC 2009

Seiten: 4Sprache: EnglischTyp: PDF

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Dieter, Sabine; Menzel, Wolfgang (Institute of Microwave Techniques, University of Ulm, Ulm, Germany)
Moessinger, Alexander; Mueller, Stefan; Jakoby, Rolf (Department of Microwave Engineering, Technische Universität Darmstadt, Darmstadt, Germany)

A new measurement method for characterization of liquid crystal reflectarrays (LC) is presented. The phase and amplitude characteristics are determined by near-field measurements close to the antenna surface, using high resolution probes, which have been developed to resolve individual patches on the reflectarray. Measurement results showed a phase angle range of 280deg of individual detected LC patches. The measurement setup and corresponding measurement results at 35 GHz are presented. The procedure used for measurement automation is also explained.