| Item type |
学術雑誌論文 / Journal Article(1) |
| 公開日 |
2024-08-30 |
| タイトル |
|
|
タイトル |
Permittivity Estimation Based on Transmission Coefficient for Gaussian Beam in Free-Space Method |
|
言語 |
en |
| 言語 |
|
|
言語 |
eng |
| 資源タイプ |
|
|
資源 |
http://purl.org/coar/resource_type/c_6501 |
|
タイプ |
journal article |
| アクセス権 |
|
|
アクセス権 |
open access |
|
アクセス権URI |
http://purl.org/coar/access_right/c_abf2 |
| 著者 |
Koichi HIRAYAMA
Yoshiyuki YANAGIMOTO
Jun-ichiro SUGISAKA
Takashi YASUI
|
| 抄録 |
|
|
内容記述タイプ |
Abstract |
|
内容記述 |
In a free-space method using a pair of horn antennas with dielectric lenses, we demonstrated that the permittivity of a sample can be estimated with good accuracy by equalizing a measured transmission coefficient of a sample to a transmission coefficient for a Gaussian beam, which is approximately equal to the transmission coefficient for a plane wave multiplied by a term that changes the phase. In this permittivity estimation method, because the spot size at the beam waist in a Gaussian beam needs to be determined, we proposed an estimation method of the spot size by employing the measurement of the Line in Thru-Reflect-Line calibration; thus, no additional measurement is required. The permittivity estimation method was investigated for the E-band (60-90 GHz), and it was demonstrated that the relative permittivity of air with a thickness of 2mm and a sample with the relative permittivity of 2.05 and a thickness of 1mm is estimated with errors less than ±0.5% and ±0.2%, respectively. Moreover, in measuring a sample without displacing the receiving horn antenna to avoid the error in measurement, we derived an expression of the permittivity estimation for S parameters measured using a vector network analyzer, and demonstrated that the measurement of a sample without antenna displacement is valid. |
|
言語 |
en |
| 書誌情報 |
en : IEICE Transactions on Electronics
巻 E106.C,
号 6,
p. 335-343,
発行日 2023-01
|
| ISSN |
|
|
収録物識別子タイプ |
EISSN |
|
収録物識別子 |
1745-1353 |
| DOI |
|
|
|
識別子タイプ |
DOI |
|
|
関連識別子 |
https://doi.org/10.1587/transele.2022ECP5030 |
| 権利 |
|
|
言語 |
en |
|
権利情報 |
Copyright(C)2023 IEICE |
| 出版者 |
|
|
出版者 |
The Institute of Electronics, Information and Communication Engineers |
|
言語 |
en |
| 著者版フラグ |
|
|
言語 |
en |
|
値 |
publisher |
| 出版タイプ |
|
|
出版タイプ |
VoR |
|
出版タイプResource |
http://purl.org/coar/version/c_970fb48d4fbd8a85 |
IEICE-EC_hira.pdf (1.7 MB)
