Time domain material characterizations using leaky lens antennas

Author

Vakili, Iman ; Ohlsson, Lars ; Gustafsson, Mats ; Wernersson, Lars-Erik

Author_Institution

Dept. Electr. & Inf. Technol., Lund Univ., Lund, Sweden

fYear

2014

fDate

16-23 Aug. 2014

Firstpage

1

Lastpage

2

Abstract

A novel time domain methodology to find the permittivity of materials at mm-wave frequencies is investigated. A wide-band, and non-dispersive leaky lens antenna together with an in-house fabricated wavelet generator, transmit high frequency short pulses through a dielectric slab. A non-dispersive dielectric represents an amplitude change due to the losses and the mismatch at the dielectric interface and a delay in the time domain signal that associated with the permittivity. The effects of a plexiglas dielectric slab on the time domain signal is shown and the delay in the signal is used to find the permittivity of the slab.

Keywords

broadband antennas; dielectric materials; leaky wave antennas; lens antennas; millimetre wave antennas; permittivity; dielectric interface; dielectric slab; mm-wave frequency; nondispersive dielectric; nondispersive leaky lens antenna; permittivity; short pulses; time domain material characterizations; time domain signal; wavelet generator; wideband leaky lens antenna; Antenna measurements; Delays; Lenses; Materials; Permittivity; Time-domain analysis; Transmitting antennas;

fLanguage

English

Publisher

ieee

Conference_Titel

General Assembly and Scientific Symposium (URSI GASS), 2014 XXXIth URSI

Conference_Location

Beijing

Type

conf

DOI

10.1109/URSIGASS.2014.6929114

Filename

6929114