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Single-block three-mode dielectric filter

A dielectric filter and single-block technology, applied in waveguide devices, electrical components, circuits, etc., can solve problems such as insufficient remote harmonic suppression capabilities, achieve obvious improvement effects, increase the number of filter stages, and be easy to use Effect

Pending Publication Date: 2020-07-17
重庆思睿创瓷电科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention intends to provide a single block three-mode dielectric filter to solve the technical problem that the three-mode dielectric filter in the prior art has insufficient ability to suppress far-end harmonics

Method used

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  • Single-block three-mode dielectric filter
  • Single-block three-mode dielectric filter
  • Single-block three-mode dielectric filter

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A single block three-mode dielectric filter, including at least two three-mode resonators 1, also includes at least one intermediate block, as attached figure 1 As shown, in this embodiment, the number of three-mode resonators 1 is two, the number of middle blocks is one, and the middle block is a single-mode resonator 2 . Both the three-mode resonator 1 and the single-mode resonator 2 are ceramic dielectric materials, and the surfaces of the three-mode resonator 1 and the single-mode resonator 2 are covered with a conductive shielding layer, and the conductive shielding layer is a metal conductive shielding layer. In this embodiment The material of the middle metal conductive shielding layer is silver.

[0028] The single-mode resonator 2 and the three-mode resonator 1 are provided with a coupling window 3, the coupling window 3 is not covered with a metal conductive shielding layer, the shape of the coupling window 3 is matched, and the size is the same, and the coupl...

Embodiment 2

[0031] The difference between this embodiment and Embodiment 1 is that: figure 2 As shown, the coupling window 3 at the coupling place between the single-mode resonator 2 and the three-mode resonator 1 is a square, including a square and a bar shape. In this embodiment, the coupling window 3 is a bar shape, and the single-mode resonator 2 and the three-mode resonator The number of coupling windows 3 on the mode resonator 1 is two, and the coupling windows 3 are arranged on the edge of the middle block and the three-mode resonator 1, that is, the left and right edges of the three-mode resonator 1 are respectively provided with strip-shaped Coupling window 3, the left and right edges of the other three-mode resonator 1 are respectively provided with a strip-shaped coupling window 3, and the left and right sides of the single-mode resonator 2 are respectively provided with strips opposite to the two three-mode resonators 1 The single-mode resonator and the three-mode resonator 1...

Embodiment 3

[0034] The difference between this embodiment and Embodiment 1 is that the coupling window 3 at the coupling point between the single-mode resonator 2 and the three-mode resonator 1 is ring-shaped, including a circular ring and a square ring. The coupling window 3 on the right side of the single-mode resonator 1 and the left side of the single-mode resonator 2 is strip-shaped, and the coupling window 3 on the right side of the single-mode resonator 2 and the left side of the three-mode resonator 1 is circular, as attached Figure 5 As shown, in other embodiments, the coupling windows 3 are all circular, and in other embodiments the coupling windows 3 are all square. The S-parameter simulation curve using the filter in this embodiment is as follows Figure 6 as shown, Figure 6 The horizontal axis in the figure is the operating frequency, the unit is megahertz (MHz), and the vertical axis is the S parameter of the dielectric waveguide filter (the S parameter between the coupl...

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Abstract

The invention relates to the technical field of communication equipment components. The invention relates to a filter, in particular to a single three-mode dielectric filter. The filter comprises at least two three-mode resonators, at least one middle block is further included; two sides of the middle block are respectively coupled with the three-mode resonators; the middle block is a single-moderesonator; the middle block is connected with the three-mode resonator through solder paste or silver paste; the surfaces of the three-mode resonators and the surface of the middle block are covered with conductive shielding layers, coupling windows are formed in the coupling positions of the middle block and the three-mode resonators, the coupling windows are square or annular, a coupling input port is formed in the three-mode resonator located on the outer side, and a coupling output port is formed in the other three-mode resonator located on the outer side. By adopting the scheme, the technical problem of insufficient far-end harmonic suppression capability of a three-mode dielectric filter in the prior art is solved.

Description

technical field [0001] The invention relates to the technical field of communication equipment components, in particular to a single block three-mode dielectric filter. Background technique [0002] With the development of wireless communication technology, wireless communication equipment is increasingly pursuing miniaturization. Compared with traditional metal cavity waveguide filters, dielectric waveguide filters have the advantages of small size, small insertion loss, high power withstand, and low cost. In equipment such as wireless base stations, radio frequency terminals, and radio frequency or microwave transceiver components. Existing dielectric waveguide filters are usually single-mode dielectric waveguide filters. During use, they only have a single resonant mode. To achieve multiple resonant modes, multiple single-mode filters need to be combined together to achieve this. This method undoubtedly increases the quality and volume of the equipment, so in order to re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01P1/20
CPCH01P1/2002
Inventor 何进军韦俊杰陈鹏李朝勇
Owner 重庆思睿创瓷电科技有限公司
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