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Superconducting disk resonator and superconducting filter

A technology of superconducting resonators and resonators, applied in resonators, superconducting devices, waveguide-type devices, etc., can solve the problems of reducing device reliability, affecting filtering characteristics, gaps, etc.

Inactive Publication Date: 2008-09-17
FUJITSU LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But in the actual measurement, there will be a gap at the high frequency end of the resonance curve
Such gaps appearing in the resonance curve, for example, affect the filter characteristics, reduce the reliability of the device

Method used

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  • Superconducting disk resonator and superconducting filter
  • Superconducting disk resonator and superconducting filter
  • Superconducting disk resonator and superconducting filter

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Embodiment Construction

[0033] Preferred embodiments of the present invention are described below with reference to the accompanying drawings.

[0034] 3A and 3B are a plan view and a perspective view, respectively, of a superconducting disk resonator 10 according to an embodiment of the present invention. Figure 3C is a schematic diagram showing the frequency characteristics of the superconducting disk resonator 10 of FIGS. 3A and 3B .

[0035] The shown superconducting disk resonator 10 includes: an anisotropic dielectric substrate 21; a disk resonator pattern (signal layer) 12 made of a superconducting material formed on the dielectric substrate 21; a pair of signal The input / output line 13 extends straight to the superconducting resonator pattern 12 . The superconducting disk resonator 10 also includes a superconducting film (underlayer) 14 disposed on the back of the dielectric substrate 21 . In one example, YBCO (Y-Ba-Cu-O) material is used as the superconducting material of the resonator pa...

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Abstract

The invention discloses a superconducting disk resonator and a superconducting filter using the same. The superconducting disk resonator is disclosed that includes a dielectric base substrate having dielectric anisotropy, a disk type superconducting resonator pattern that is formed on the dielectric base substrate with superconducting material, and a pair of signal input / output lines arranged on the dielectric base substrate and extending in a straight line towards the disk type superconducting resonator pattern. The direction of dielectric anisotropy of the dielectric base substrate is oriented at + / -90 degrees with respect to an extending direction of the pair of signal input / output lines.

Description

technical field [0001] The present invention relates to a superconducting disk resonator and a superconducting filter using the superconducting disk resonator, which is used for transmitting Front-end, such as transmit filters or antennas. Background technique [0002] Due to the continuous popularization and development of mobile phones, high-speed, high-capacity transmission technology is very much needed. Compared with conventional electrical conductors, superconductors have lower surface resistance even in the high-frequency domain, so they are preferentially considered for use in filters for base stations in mobile communication systems to obtain low-loss, high-Q resonators. [0003] In the case of using a superconducting filter as a band-pass filter on the receiving side, for example, transmission loss can be reduced and accurate frequency blocking characteristics can be obtained. In the case of using superconducting filters as transmit-side bandpass filters, for exa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01P7/10H01P1/203
CPCH01P7/08H01P7/10H10N60/00
Inventor 赤濑川章彦中西辉佐藤桂辅
Owner FUJITSU LTD