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Method for detecting and optimizing plane superconducting microstrip resonator

A superconducting resonator and resonator technology, applied in resonators, waveguide devices, instruments, etc., can solve problems such as parasitic coupling interference, and achieve the effect of small electromagnetic radiation and compact overall area

Active Publication Date: 2009-02-18
INST OF PHYSICS - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But the situation of the narrow-band planar superconducting filter is completely different. The parasitic coupling often causes destructive interference. This contradiction is particularly prominent when the bandwidth is around 0.5%, and no ideal solution has been seen so far.

Method used

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  • Method for detecting and optimizing plane superconducting microstrip resonator
  • Method for detecting and optimizing plane superconducting microstrip resonator
  • Method for detecting and optimizing plane superconducting microstrip resonator

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] refer to figure 1 , 2 , using a complete microstrip line, the microstrip line is a superconducting microstrip line, the upper layer of the microstrip conductor 3 and the lower layer of the ground plane conductor 1 are high-temperature superconducting thin films, and the middle is a dielectric constant ε r single crystal dielectric sheet. Form a geometric figure with an inner ring and an outer ring, the inner and outer rings are not closed and the inner and outer rings are connected (the geometric structure with an unclosed inner and outer ring is called a back-shaped structure in this paper, and this The microstrip resonator provided by the invention is called a microstrip resonator). In this embodiment, the selected microstrip line adopts the crystal medium LaAlO 3 , whose dielectric constant ε r =23.6, the outer loop of the microstrip line is made into a rectangle, and under the condition that the length of the microstrip line remains unchanged, in order to reduc...

Embodiment 2

[0042] A complete superconducting microstrip line is used to form a geometric figure with inner and outer rings, the inner and outer rings are not closed and the inner and outer rings are connected. In the present embodiment, the outer loop and the inner loop are rectangles (such as Figure 3a shown). When there is a resonant current in the microstrip line, the direction of the instantaneous resonant current in the inner loop and the outer loop is opposite.

[0043] In this embodiment, the maximum side length of the outer ring is 6.0 mm, the maximum side width is 5.2 mm, the line width of the microstrip line is 0.5 mm, the distance between the inner and outer ring lines is 0.3 mm, and the distance between the opening ends of the inner and outer rings is 0.12 mm.

[0044] Using computer simulation technology to compare the weak radiation characteristics of the resonator, it is judged whether this embodiment meets the requirements. Its principle and method are the same as those...

Embodiment 3

[0046] A complete superconducting microstrip line is used to form a geometric figure with inner and outer rings, the inner and outer rings are not closed and the inner and outer rings are connected. In the present embodiment, the outer loop and the inner loop are circular (such as Figure 3b shown). When there is a resonant current in the microstrip line, the direction of the instantaneous resonant current in the inner loop and the outer loop is opposite.

[0047] In this embodiment, the maximum radius of the outer ring is 5.4 mm, the line width of the microstrip line is 0.5 mm, the distance between the inner and outer ring lines is 0.2 mm, and the distance between the opening ends of the inner and outer rings is 0.15 mm.

[0048] Using computer simulation technology to compare the weak radiation characteristics of the resonator, it is judged whether this embodiment meets the requirements. Its principle and method are the same as those in Embodiment 1, and will not be repeat...

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Abstract

The invention relates to a planar superconductive microstrip resonator, comprising a microstrip composed by upper and lower layer superconductive films and an artificial monomorph medium between the two layers of the superconductive films; be in characteristics that the microstrip is a complete shoestring, forming a geometrical pattern with an inner ring and an outer ring; the inner ring and the outer ring are not sealed. The advantages of the invention are following: the parasitical coupling is significantly weakened; the structure is more compact; because of the structure of the inner ring and the outer ring and the reverse direction of the inner ring and the outer ring, when the resonators of the invention are combined together, the coupling between the resonators is relevantly weak; in order to satisfy a certain coupling relation, the resonators must get closer; the integral structure can be more compact in this way;; furthermore, the distant field weak coupling means the significantly reduced influence of the parasitical coupling for three or more than three resonator combinations; the resonators provided by the invention can design and manufacture the narrow-strip superconductive band-pass filter based on the above situation.

Description

technical field [0001] The invention belongs to the field of microwave engineering. Specifically, the invention relates to a method for detecting and optimizing a planar superconducting microstrip resonator. Background technique [0002] In microwave engineering, superconducting microstrip resonators can form different orders of planar superconducting filters (a passive device), which are used in various microwave devices (such as radars, mobile phone base stations, microwave communication devices, radio astronomy telescopes) etc.), used to select a signal of a certain frequency. In the front end of various microwave receiving systems, filters are often used to suppress unwanted signal frequencies so that the required signal frequencies can pass through smoothly. High-temperature superconducting filter is a planar device made of high-temperature superconducting materials, which is composed of several planar resonators arranged according to certain rules. For a band-pass fi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01P7/08G06F17/50
Inventor 李顺洲何豫生黄建冬张雪强李春光何艾生黎红
Owner INST OF PHYSICS - CHINESE ACAD OF SCI
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