Tee joint band high-temperature superconducting filter

A high-temperature superconducting and filter technology, which is applied in the filter field to achieve the effect of improving stop band characteristics, small size, and high quality factor

Inactive Publication Date: 2013-09-25
EAST CHINA JIAOTONG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, so far only a few attempts have been made to construct multi-

Method used

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  • Tee joint band high-temperature superconducting filter
  • Tee joint band high-temperature superconducting filter
  • Tee joint band high-temperature superconducting filter

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Embodiment 1: A three-pass band high-temperature superconducting filter.

[0023] Such as Figure 4 As shown, the first multi-stub loaded resonator 4 and the second multi-stub loaded resonator 5 described above are placed face-to-face and centered symmetrically to form two main resonant units of the high-temperature superconducting three-pass band filter, and the input feeder 6 , The output feeder 7 adopts the weak coupling mode of slot coupling to couple with the multi-stub loaded resonators 4 and 5, which is conducive to generating transmission zero points and improving the stop band characteristics.

[0024] Image 6 The frequency response diagram of a high-temperature superconducting three-pass band filter designed and manufactured for applying the multi-segment loaded resonator proposed by the present invention. The resonator can generate three independent passbands with better in-band characteristics.

Embodiment 2

[0025] Embodiment 2: An improved three-pass band high-temperature superconducting filter.

[0026] Such as Figure 5 As shown, the structure of the main resonant unit and the input and output feeder remains unchanged from that of Embodiment 1, but a bent half-wavelength resonator 10 is added to the filter structure of Embodiment 1, which is connected to the input feeder 6 and output The spacing of the feeder 7 is 11 and 12 respectively. This non-resonant source-load coupling structure introduces two additional transmission zero points, which makes the stop-band characteristic of the filter better than that of Embodiment 1.

[0027] Figure 7 The frequency response diagram of an improved three-pass band high-temperature superconducting filter designed and manufactured for applying the multi-segment loading resonator proposed by the present invention. Relative to the frequency response of Example 1, Figure 7 Two new transmission zero points 18 and 19 are added in the, which effectiv...

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Abstract

The invention discloses a tee joint band high-temperature superconducting filter which is characterized by comprising two multi-branch-knot loading resonators, an incoming feeder and an output feeder. The first multi-branch-knot loading resonator (4) and the second multi-branch-knot loading resonator (5) are arranged face to face in a central symmetry mode. A distance exists between the two multi-branch-knot loading resonators. The output feeder (7) and the first multi-branch-knot loading resonator (4) form a feed structure of a gap coupler, and the incoming feeder (6) and the second multi-branch-knot loading resonator (5) form a feed structure of the gap coupler. According to the band high-temperature superconductivity filter, the three-frequency-band band-pass filtering function can be achieved, the requirement of the system for filtering on three frequency band signals which are not adjacent is met, control of the bandwidth of the filter can be achieved, an extra transmission zero can be led to a stop band of the filter, and the characteristics of the stop band of the filter are effectively improved. The tee joint band high-temperature superconductivity filter is compact in structure, small in size, flexible in design, easy to integrate, suitable for manufacturing high-temperature superconducting thin films with a high quality factor.

Description

Technical field [0001] The invention belongs to the technical field of microwave communication equipment and relates to a filter. Background technique [0002] With the rapid development of modern wireless communication systems, the requirements for the application of multi-passband filters are also increasing. Research on the innovative design of multi-passband filters has recently become very popular. Realizing multi-frequency band sharing is an important subject in the design of modern microwave communication systems. As a key component in the communication system, the multi-frequency design of microwave filters has become a key technology. Generally, a multi-band microwave filter can be realized by inserting a stop band in a wide pass band, which can be realized by a wide band pass filter and a narrow band stop filter in series; or by two different band pass filters In order to realize the impedance matching of the input and output terminals, it is usually necessary to inse...

Claims

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Application Information

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IPC IPC(8): H01P1/20H01P1/203
Inventor 刘海文雷久淮覃凤王言任宝平官雪辉张晓燕
Owner EAST CHINA JIAOTONG UNIVERSITY
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