Characterization of Reconfigurable LC-Reflectarrays Using Near-Field Measurements

Author

Dieter, Sabine ; Moessinger, Alexander ; Mueller, Stefan ; Jakoby, Rolf ; Menzel, Wolfgang

Author_Institution

Inst. of Microwave Tech., Univ. of Ulm, Ulm

fYear

2009

fDate

16-18 March 2009

Firstpage

1

Lastpage

4

Abstract

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.

Keywords

microstrip antenna arrays; microwave antenna arrays; phase measurement; amplitude measurements; antenna surface; frequency 35 GHz; individual patches; liquid crystal reflectarrays; measurement automation; near-field measurements; phase measurements; reconfigurable LC-reflectarrays; Antenna measurements; Crystalline materials; Liquid crystals; Microwave measurements; Microwave theory and techniques; Phase detection; Phase measurement; Probes; Reflection; Reflector antennas; High resolution probe; liquid crystal; near-field characterization; reconfigurable antenna; reflectarray;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Conference, 2009 German

Conference_Location

Munich

Print_ISBN

978-3-9812668-0-1

Electronic_ISBN

978-3-8007-3150-3

Type

conf

DOI

10.1109/GEMIC.2009.4815846

Filename

4815846