Free-space quasi-optical spectrometer for material characterization in the 50–500 GHz frequency range

Author

Kazemipour, Alireza ; Hudlicka, Martin ; Salhi, Mohammed ; Kleine-Ostmann, Thomas ; Schrader, Thorsten

Author_Institution

Phys.-Tech. Bundesanstalt, Braunschweig, Germany

fYear

2014

fDate

6-9 Oct. 2014

Firstpage

636

Lastpage

639

Abstract

A compact free-space setup is designed based on 90-degree off-axis parabolic mirrors and pyramidal horn antennas to cover a wide frequency range from 50 GHz to 500 GHz. A commercial VNA with frequency extenders is used to measure s-parameters and provide raw data to extract intrinsic material characteristics. The calibration process is simplified and a method is presented to extract both real and imaginary part of permittivity. Several materials were measured and the extracted parameters are presented.

Keywords

S-parameters; calibration; horn antennas; millimetre wave materials; mirrors; terahertz wave spectra; 90-degree off-axis parabolic mirrors; S-parameters; calibration process; commercial VNA; free-space quasioptical spectrometer; frequency 50 GHz to 500 GHz; frequency extenders; intrinsic material characteristic extraction; material characterization; permittivity; pyramidal horn antennas; Calibration; Frequency measurement; Materials; Mirrors; Permittivity; Permittivity measurement; Slabs; Material characterization; Millimeter and sub-millimeter band; Quasi-optical systems; THz spectroscopy;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Conference (EuMC), 2014 44th European

Conference_Location

Rome

Type

conf

DOI

10.1109/EuMC.2014.6986514

Filename

6986514