HIGH-T-c SUPERCONDUCTING SMALL ANTENNAS

被引：2

作者：

Itoh, K. ^{[1
]}

Ishii, O. ^{[1
]}

Nagai, Y. ^{[1
]}

Suzuki, N. ^{[1
]}

Kimachi, Y. ^{[1
]}

Michikami, O. ^{[1
]}

机构：

[1] NTT Interdisciplinary Res Labs, 162 Shirakata Shirane, Tokai, Ibaraki 31911, Japan

来源：

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

关键词：

Antenna radiation - Ceramic materials - Copper oxides - High temperature superconductors;

D O I：

10.1109/77.233992

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：

This paper describes the designs and reports experimental results for one- and two-element high-T, superconducting small antennas composed of self-presonant helical radiators and quarter-wave matching circuits. A 500-MHz-band antenna employing a lambda/40 (lambda is the free-space wavelength) radiator fabricated with Bi(Pb)SrCaCuO bulk realized an actual gain of 1.2 dBi, which indicates that this antenna achieves a high efficiency of 70%. Next, a 900-MHz-band two-element array antenna employing lambda/20 radiators with a lambda/11 element spacing was designed to obtain a superdirective radiation pattern. The array antenna thus fabricated with YBaCuO bulk, realized both a higher efficiency than a Cu antenna and a unidirectional radiation pattern. Furthermore, by adopting EuBaCuO thin-film meander lines as the matching circuit, the total length could be reduced to about 1/4 that of an antenna using a linear circuit.

引用

页码：2836 / 2839

页数：4

共 14 条

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