EFFECT OF RF INTERFERENCE ON CHARACTERISTICS OF DC SQUID SYSTEM

被引：14

作者：

Ishikawa, N. ^{[1
]}

Nagata, K. ^{[1
]}

Sato, H. ^{[1
]}

Kasai, N. ^{[1
,2
]}

Kiryu, S. ^{[1
,2
]}

机构：

[1] Shimizu Corp, Inst Technol, Koto Ku, 3-4-17 Etchujima, Tokyo 135, Japan

[2] Electrotech Lab, 1-1-4 Umezono, Tsukuba, Ibaraki 305, Japan

来源：

IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY | 1993年 / 3卷 / 01期

关键词：

D O I：

10.1109/77.233588

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

It is known from experience that rf noise may wipe out the SQUID operation. However, the effects of rf interference on characteristics of dc SQUID are not made clear. We have measured noises of our dc SQUID gradiometer radiating rf field with a frequency between 100kHz and 80MHz. The irradiation of rf field increased the white noise level of the gradiometer in flux-locked operation and decreased the cut-off frequency. The experimental results showed that the irradiation of rf field affects to the flux-voltage characteristics of dc SQUID. The effect of high frequency magnetic field on flux to voltage transfer function was investigated by computer simulation using a simple RSJ model.

引用

页码：1910 / 1913

页数：4