Work

Millimeter-Wave Dielectric-Constant Measurement of Alumina by Free-Space Time-Domain Method.

Year: 2002

Type: article

Abstract: Dielectric constant of alumina was measured by free-space time-domain method in the W-band (75- 110 GHz) millimeter-wave region. By using a millimeter-wave reflection profile, the thickness of sample measured by millimeter-wave was determined from the time difference of the reflection peaks from the front and back surfaces of the sample. The refraction index was calculated from the thickness of sample measured by millimeter-wave and the apparent thickness measured by a caliper, and then the dielectric constant was calculated. Obtained values were almost the same as reported for alumina measured at low-frequency. Apparent dielectric constant rose with the increase of the sample density and equivalent dielectric constant decreased with the increase of the sample density. The slope for the former was larger than that for the later. The approximate lines coincided each other at the density of 100%.

Source: Journal of the Japan Society of Powder and Powder Metallurgy

DOI: 10.2497/jjspm.49.895

Authors: Saburo Sano, Akihiro Tsuzuki, Akihiro Gotou, Takashi Yoshioka, Yukio Makino, Shoji Miyake

Institutions: National Institute of Advanced Industrial Science and Technology, Joining and Welding Research Institute, The University of Osaka

Language: English

Topic: Microwave and Dielectric Measurement Techniques

Subfield: Electrical and Electronic Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: diamond

OpenAlex ID: W2329297113

FWCI: 0.35

Cites: 1

Cited by: 1

Related to: 10