Two-Sapphire-Rod-Resonator Method to Measure the Surface Resistance of High-Tc Superconductor Films
Summary :
Precise designs are presented for sapphire rod resonators of three types, which have been proposed by the IEC/TC90/WG8 in the standard measurement method of the surface resistance Rs of high-Tc superconductor (HTS) films; an open-type, a cavity-type and a closed-type. In order to separate TE011 and TE013 modes, which are used in Rs measurements, from the other modes, appropriate dimensions for these three resonators are determined from mode charts calculated from a rigorous analysis based on the mode matching method, taking account of an uniaxial-anisotropic characteristic of sapphire. Comparison of the open-type resonator with the closed-type is performed. For the open-type, the unloaded Q values of both the TE011 and TE013 modes are reduced by radiations of a leaky state TM310 mode. Finally, validity of the design and a two-sapphire-rod-resonator method will be verified by experiments.
- Publication
- IEICE TRANSACTIONS on Electronics Vol.E87-C No.5 pp.681-688
- Publication Date
- 2004/05/01
- Publicized
- Online ISSN
- DOI
- Type of Manuscript
- Special Section PAPER (Special Section on Advances in Characterization and Measurement Technologies for Microwave and Millimeter-Wave Materials, Devices and Circuits)
- Category
- General Methods, Materials, and Passive Circuits
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Toru HASHIMOTO, Yoshio KOBAYASHI, "Two-Sapphire-Rod-Resonator Method to Measure the Surface Resistance of High-Tc Superconductor Films" in IEICE TRANSACTIONS on Electronics,
vol. E87-C, no. 5, pp. 681-688, May 2004, doi: .
Abstract: Precise designs are presented for sapphire rod resonators of three types, which have been proposed by the IEC/TC90/WG8 in the standard measurement method of the surface resistance Rs of high-Tc superconductor (HTS) films; an open-type, a cavity-type and a closed-type. In order to separate TE011 and TE013 modes, which are used in Rs measurements, from the other modes, appropriate dimensions for these three resonators are determined from mode charts calculated from a rigorous analysis based on the mode matching method, taking account of an uniaxial-anisotropic characteristic of sapphire. Comparison of the open-type resonator with the closed-type is performed. For the open-type, the unloaded Q values of both the TE011 and TE013 modes are reduced by radiations of a leaky state TM310 mode. Finally, validity of the design and a two-sapphire-rod-resonator method will be verified by experiments.
URL: https://global.ieice.org/en_transactions/electronics/10.1587/e87-c_5_681/_p
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@ARTICLE{e87-c_5_681,
author={Toru HASHIMOTO, Yoshio KOBAYASHI, },
journal={IEICE TRANSACTIONS on Electronics},
title={Two-Sapphire-Rod-Resonator Method to Measure the Surface Resistance of High-Tc Superconductor Films},
year={2004},
volume={E87-C},
number={5},
pages={681-688},
abstract={Precise designs are presented for sapphire rod resonators of three types, which have been proposed by the IEC/TC90/WG8 in the standard measurement method of the surface resistance Rs of high-Tc superconductor (HTS) films; an open-type, a cavity-type and a closed-type. In order to separate TE011 and TE013 modes, which are used in Rs measurements, from the other modes, appropriate dimensions for these three resonators are determined from mode charts calculated from a rigorous analysis based on the mode matching method, taking account of an uniaxial-anisotropic characteristic of sapphire. Comparison of the open-type resonator with the closed-type is performed. For the open-type, the unloaded Q values of both the TE011 and TE013 modes are reduced by radiations of a leaky state TM310 mode. Finally, validity of the design and a two-sapphire-rod-resonator method will be verified by experiments.},
keywords={},
doi={},
ISSN={},
month={May},}
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TY - JOUR
TI - Two-Sapphire-Rod-Resonator Method to Measure the Surface Resistance of High-Tc Superconductor Films
T2 - IEICE TRANSACTIONS on Electronics
SP - 681
EP - 688
AU - Toru HASHIMOTO
AU - Yoshio KOBAYASHI
PY - 2004
DO -
JO - IEICE TRANSACTIONS on Electronics
SN -
VL - E87-C
IS - 5
JA - IEICE TRANSACTIONS on Electronics
Y1 - May 2004
AB - Precise designs are presented for sapphire rod resonators of three types, which have been proposed by the IEC/TC90/WG8 in the standard measurement method of the surface resistance Rs of high-Tc superconductor (HTS) films; an open-type, a cavity-type and a closed-type. In order to separate TE011 and TE013 modes, which are used in Rs measurements, from the other modes, appropriate dimensions for these three resonators are determined from mode charts calculated from a rigorous analysis based on the mode matching method, taking account of an uniaxial-anisotropic characteristic of sapphire. Comparison of the open-type resonator with the closed-type is performed. For the open-type, the unloaded Q values of both the TE011 and TE013 modes are reduced by radiations of a leaky state TM310 mode. Finally, validity of the design and a two-sapphire-rod-resonator method will be verified by experiments.
ER -
English
