Waveguide Characterization of Various Solid Absorbing Materials at W-band

Author

Hunter, Robert I. ; Robertson, Duncan A. ; Smith, Graham M.

Author_Institution

Sch. of Phys. & Astron., Univ. of St. Andrews, St. Andrews, UK

Volume

21

Issue

7

fYear

2011

fDate

7/1/2011 12:00:00 AM

Firstpage

389

Lastpage

391

Abstract

We present results for the complex refractive index and characteristic relative impedance of various commercially supplied solid absorbing materials at W-band (75-110 GHz). A waveguide measurement technique is described, together with the model that is fitted to the measured data. The accuracy of this method was verified with measurements of the well known dielectric material Rexolite 1422. Results are presented for Eccosorb MF-110, MF-114, MF-117, Ferrosorb, and TK-RAM. Knowledge of the electromagnetic properties of absorbing materials enables the design and manufacture of high performance waveguide or quasi-optical loads which find widespread application as thermal calibration targets and beam terminations in radar, spectroscopy, remote sensing, plasma diagnostics and astronomy.

Keywords

dielectric materials; optical variables measurement; optical waveguides; refractive index; W-band; characteristic relative impedance; commercially supplied solid absorbing material; complex refractive index; electromagnetic property; frequency 75 GHz to 110 GHz; high performance waveguide characterization; material Rexolite 1422; plasma diagnostics; quasioptical load; radar beam termination; remote sensing; spectroscopy; thermal calibration target; waveguide measurement technique; Data models; Dielectric measurements; Electromagnetic waveguides; Impedance; Refractive index; Solids; Absorbing media; complex refractive index; dielectric measurements; impedance; millimeter wave;

fLanguage

English

Journal_Title

Microwave and Wireless Components Letters, IEEE

Publisher

ieee

ISSN

1531-1309

Type

jour

DOI

10.1109/LMWC.2011.2156774

Filename

5871698