Measurement of woods complex permittivity in 220-325 GHz band

Ji Cao; Rui Jia; Jing Xu; Zhenwei Zhang; Cunlin Zhang

doi:10.1117/12.2604057

28 October 2021 Measurement of woods complex permittivity in 220-325 GHz band

Ji Cao, Rui Jia, Jing Xu, Zhenwei Zhang, Cunlin Zhang

Proceedings Volume 11906, Infrared, Millimeter-Wave, and Terahertz Technologies VIII; 119061K (2021) https://doi.org/10.1117/12.2604057
Event: SPIE/COS Photonics Asia, 2021, Nantong, JS, China

Abstract

In this paper, the S-parameters of 2mm silicon wafer, 14.345mm wood I, 14.215mm wood II and 13.80mm wood III were measured based on 220-325 GHz quasi optical Vector Network Analyzer measurement system. Basic theory based on free space electromagnetic component equations, boundary conditions and S parameters. The electromagnetic field of "air-MUT-air" three-layer structure between calibrated reference planes is analyzed in detail, and the formula of complex permittivity is derived. The results of complex permittivity of silicon wafer extracted by this method are basically consistent with those in the literature. The measurement of woods can accurately distinguish heartwood from sapwood. This study is helpful for us to better understand the interaction mechanism between terahertz waves and wood media, and can lay a foundation for the identification of woods.

Citation Download Citation

Ji Cao, Rui Jia, Jing Xu, Zhenwei Zhang, and Cunlin Zhang "Measurement of woods complex permittivity in 220-325 GHz band", Proc. SPIE 11906, Infrared, Millimeter-Wave, and Terahertz Technologies VIII, 119061K (28 October 2021); https://doi.org/10.1117/12.2604057

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
8 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Silicon

Dielectrics

Semiconducting wafers

Free space

Terahertz radiation

Antennas

Electromagnetism

Show All Keywords

Keywords/Phrases

Search In:

Publication Years