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A Dielectric Waveguide Filter with Cross-Coupling Structure

A dielectric waveguide and cross-coupling technology, applied in waveguide-type devices, circuits, connecting devices, etc., can solve the problems of difficult design, unfavorable miniaturization of production products, etc., achieving simple structure, easy promotion and application, and electrical performance display. Effect

Active Publication Date: 2021-01-19
SICHUAN TAOGUANG COMM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the above-mentioned dielectric waveguide filter with zero-cavity structure, due to the difficulty in design, which is not conducive to production and product miniaturization, the present invention provides a dielectric waveguide filter with a cross-coupling structure

Method used

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  • A Dielectric Waveguide Filter with Cross-Coupling Structure
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  • A Dielectric Waveguide Filter with Cross-Coupling Structure

Examples

Experimental program
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Effect test

Embodiment 1

[0031] figure 1 A schematic structural diagram of a dielectric waveguide filter with a triplet cascaded cross-coupling structure provided by the present invention is shown, figure 2 It shows the frequency response simulation diagrams of two kinds of dielectric waveguide filters with triplet cascaded cross-coupling structures provided by the present invention, image 3 A schematic diagram showing the relationship between the depth of the blind hole on the coupling bridge, the coupling amount and the coupling polarity provided by the present invention, Figure 4 A schematic diagram of the relationship between the blind hole diameter and the coupling amount on the coupling bridge provided by the present invention is shown.

[0032] The dielectric waveguide filter with a triplet cascaded cross-coupling structure provided in this embodiment is a fifth-order filter, including five dielectric waveguide monomers 1, a first waveguide joint 201, and a second waveguide joint 202; The ...

Embodiment 2

[0042] picture 8 It shows a structural schematic diagram of the dielectric waveguide filter provided by the present invention with the first quadruple cascaded cross-coupling structure, Figure 6 The frequency response simulation diagrams of four kinds of dielectric waveguide filters provided by the present invention with the first quadruplet cascaded cross-coupling structure are shown.

[0043] The dielectric waveguide filter with the first four-connected cascaded cross-coupling structure provided in this embodiment is a sixth-order filter, including six dielectric waveguide monomers 1, the first waveguide connector 201 and the second waveguide Connector 202; the six dielectric waveguide monomers 1 connect the main channel coupling bridge 3 between the two dielectric waveguide monomers, and sequentially form the waveguide main channel in series, the first waveguide connector 201 and the second waveguide connector 202 Respectively connect the dielectric waveguide monomers 1 a...

Embodiment 3

[0049] Figure 7 A schematic structural diagram of a dielectric waveguide filter having a second quadruple cascaded cross-coupling structure provided by the present invention is shown.

[0050] This embodiment is a further optimization scheme of the first four-connected cascaded cross-coupling structure described in Embodiment 2. The difference is that the dielectric waveguide monomer 1 is a rectangular parallelepiped structure, and the main channel is "Several"-shaped channels, and only the second dielectric waveguide monomer on the main channel of the waveguide (that is, the second dielectric waveguide monomer in the direction from the first waveguide joint 201 to the second waveguide joint 202) is respectively connected with The fifth dielectric waveguide monomer (that is, the fifth dielectric waveguide monomer in the direction from the first waveguide joint 201 to the second waveguide joint 202) is connected through the secondary channel coupling bridge 4, although only th...

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Abstract

The present invention relates to the radio frequency device field, and discloses a dielectric waveguide filter with a cross coupling structure. The dielectric waveguide filter is connected two nonadjacent dielectric waveguide monomers located on a waveguide main channel through an auxiliary channel coupling bridge to form a cross coupling structure with multi-body cascade on the waveguide main channel and configure the number of the auxiliary channel coupling bridges and the relative coupling polarity of the main / auxiliary channel coupling bridges according to the cross coupling theory or the radio frequency simulation to obtain different combinations of notch points forming notch waveforms at the filter frequency response pass-band high end and / or low end so that required notch points can be obtained only through simple cross coupling combination without extra zero cavity structure and the high inhibition features of the dielectric waveguide filter are realized, and therefore the dielectric waveguide filter with the cross coupling structure facilitate the electrical performance display and miniaturization design of products.

Description

technical field [0001] The invention relates to the field of radio frequency devices, in particular to a dielectric waveguide filter with a cross-coupling structure. Background technique [0002] A filter is a frequency-selective device that allows frequency components in a specific frequency band to pass through while greatly attenuating other frequency components. The waveguide filter is a kind of filter commonly used in communication systems. The traditional waveguide filter is a metal cavity structure with air in the middle and metal material as the edge and plays the role of electromagnetic shielding and structural support. The filter using this method has a higher quality factor Q value, but its volume and weight are relatively large, which is not conducive to installation and transportation. With the development of communication systems, filters are required to have the characteristics of low insertion loss, high rejection, high power withstand, low cost and miniatur...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01P1/20H01P5/12
CPCH01P1/20H01P5/12
Inventor 郭晓宏李松陈萄王国光
Owner SICHUAN TAOGUANG COMM