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Dielectric waveguide coupling structure and multi-stage dielectric waveguide filter

A technology of dielectric waveguide and coupling structure, used in waveguide-type devices, electrical components, circuits, etc., can solve the problems of limited length/coupling amount, large volume of multi-order filters, etc., which is conducive to miniaturized design and simplified processing process , the effect of reducing the volume

Inactive Publication Date: 2017-06-30
SICHUAN TAOGUANG COMM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Aiming at the problem that the length / coupling amount of the coupling bridge of the existing multi-order dielectric waveguide filter is limited by the size of the milling tool, and the problem that the volume of the multi-order filter is large, the present invention provides a new type of dielectric waveguide coupling structure and multi-order dielectric waveguide filter

Method used

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  • Dielectric waveguide coupling structure and multi-stage dielectric waveguide filter
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  • Dielectric waveguide coupling structure and multi-stage dielectric waveguide filter

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Embodiment 1

[0028] figure 2 It shows a schematic structural diagram of the first multi-order dielectric waveguide filter provided by the present invention, image 3 It shows a schematic diagram of the large partial split structure in the first multi-order dielectric waveguide filter provided by the present invention, Figure 4 It shows a schematic diagram of the small partial split structure in the first multi-order dielectric waveguide filter provided by the present invention.

[0029] This embodiment provides a fifth-order dielectric waveguide filter with a linear structure, including a first waveguide joint 101, a second waveguide joint 102, and five dielectric waveguide monomers 1 sequentially connected in series to form a waveguide main channel, wherein the The first waveguide joint 101 and the second waveguide joint 102 are respectively connected to the dielectric waveguide monomers 1 located at both ends of the main waveguide channel; the two adjacent dielectric waveguide monomer...

Embodiment 2

[0038] Figure 5 A schematic structural diagram of the second multi-order dielectric waveguide filter provided by the present invention is shown. This embodiment still provides a fifth-order dielectric waveguide filter, which differs from the fifth-order dielectric waveguide filter described in Embodiment 1 in that: the fifth-order dielectric waveguide filter has a Z-shaped structure, that is, The waveguide main channel of the fifth-order dielectric waveguide filter is a "Z"-shaped channel. Therefore, the filter can be three-dimensional, and the volume of the device can be further reduced. In addition, the main channel of the waveguide may also be, but not limited to, a channel in the form of a "U"-shaped channel or the like.

[0039] The technical effect of the fifth-order dielectric waveguide filter provided in this embodiment is based on the technical effect of the first embodiment, and further includes the following: (1) The filter can be three-dimensional, and the volum...

Embodiment 3

[0040] Figure 6 A schematic structural diagram of the third multi-order dielectric waveguide filter provided by the present invention is shown. This embodiment provides a multi-order dielectric waveguide filter with a hybrid coupling structure, which includes two inductive through-hole coupling structures 5 with frequency-adjusting blind holes 501, and allows the two parts of the inductive through-hole coupling structure 5 to pass through The dielectric waveguide coupling structure described in Embodiment 1 is combined to form a three-dimensional filter structure overlapping up and down, further reducing the volume of the device.

[0041] The technical effect of the multi-order dielectric waveguide filter provided in this embodiment can be easily derived by referring to the technical effect of the second embodiment, and will not be repeated here.

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Abstract

The invention relates to the field of radio-frequency filter devices, and discloses a novel dielectric waveguide coupling structure and a multi-stage dielectric waveguide filter. For the dielectric waveguide coupling structure formed in a splicing mode, no milling tool is needed for machining, the coupling bridge length / coupling amount of the dielectric waveguide coupling structure are not limited by the size of the milling tool any more, the coupling quantity between two dielectric waveguide monomers can be adjusted by adjusting the thickness of a metal shield layer arranged on a connecting surface and / or the plane shape of a metal shield layer missing hole and / or the like, and the purpose of precise coupling is achieved. Meanwhile, no milling tool is needed for machining, the coupling bridge length / coupling amount of the dielectric waveguide coupling structure can be not limited by the size of the milling tool any more. In addition, the dielectric waveguide coupling structure can be formed only through technologies such as the regional back silver technology and the edge welding technology, the machining process is greatly simplified, the machining difficulty is lowered, production is convenient, and the cost is lowered.

Description

technical field [0001] The invention relates to the field of radio frequency filter devices, in particular to a novel dielectric waveguide coupling structure and a multi-order dielectric waveguide filter. 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 the metal material plays the role of electromagnetic shielding and structural support at the edge. The filter adopted in this way has a higher quality factor Q value, but has the problems of larger volume and weight, which is not conducive to installation and transportation. With the development of communication systems, the filter is required to have the characteristics of low insertion loss, high rejectio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01P1/20
CPCH01P1/2002
Inventor 郭晓宏李松陈萄王国光
Owner SICHUAN TAOGUANG COMM
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