Design, fabrication, and characterization of patch antenna using superconducting thin film

✍ Scribed by Katsufumi Ehata; Masanobu Kusunoki; Shigetoshi Ohshima

• Publisher: John Wiley and Sons
• Year: 1999
• Tongue: English
• Weight: 447 KB
• Volume: 82
• Category: Article
• ISSN: 8756-663X
• DOI: 10.1002/(sici)1520-6432(199911)82:11<59::aid-ecjb6>3.0.co;2-x

✦ Synopsis

The surface resistance of superconductors is smaller than that of normal conductors by several orders of magnitude. Hence, a superconducting microwave device has lower loss and higher performance than a normal conducting one. Since the mobile communication systems have become popular and cryocoolers of small size and light weight have been fabricated in recent years, research activity on superconducting microwave devices has been enhanced. In this paper, the design, fabrication, and characterization of a patch antenna using a high-temperature superconducting thin film are reported. It is demonstrated that the superconducting patch antenna has higher gain than a normal conducting one. The temperature dependence of the resonant frequency, the input resistance, and the power handling properties are also discussed.