IP3 Measurements of Liquid Crystals at Microwave Frequencies

Author

Goelden, Felix ; Mueller, Stefan ; Scheele, Patrick ; Wittek, Michael ; Jakoby, Rolf

Author_Institution

Inst. of Microwave Eng., Darmstadt Univ. of Technol.

fYear

2006

fDate

10-15 Sept. 2006

Firstpage

971

Lastpage

974

Abstract

The nonlinear behaviour of a phase shifter employing two different nematic liquid crystals (NLCs) as a tunable dielectric is investigated in this work. The NLCs used are the quasi-standard NLC 5CB and a highly anisotropic mixture MDA-03-2844. The third order intercept point IP3 was measured at 7.4 GHz. The utilized measurement setup allows the application of 40 dBm total power to the device under test (DUT) with an IP3 of the empty setup of at least 60 dBm. The output IP3 is at least 52 dBm for 5CB and 58 dBm for the mixture. The proposed phase shifter design therefore exhibits high linearity

Keywords

anisotropic media; dielectric materials; electromagnetic wave propagation; microwave devices; nematic liquid crystals; phase shifters; tuning; 7.4 GHz; IP3 measurements; MDA-03-2844; NLC 5CB; anisotropic mixture; intermodulation distortion; microwave frequency; nematic liquid crystals; nonlinear behaviour; phase shifter; third order intercept point; tunable circuits; tunable devices; tunable dielectric; Anisotropic magnetoresistance; Dielectric liquids; Dielectric measurements; Frequency measurement; Liquid crystals; Microwave frequencies; Microwave measurements; Phase shifters; Power measurement; Testing; Intermodulation distortion; Liquid crystal devices; Phase shifters; Tunable circuits and devices;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Conference, 2006. 36th European

Conference_Location

Manchester

Print_ISBN

2-9600551-6-0

Type

conf

DOI

10.1109/EUMC.2006.281084

Filename

4057983