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A kind of capacitive coupling structure and preparation method thereof

A technology of capacitive coupling and coupling connection, applied in the direction of circuits, waveguide devices, electrical components, etc., can solve the problems of poor adjustment accuracy, difficulty in meeting actual use needs, and difficulty in accurately controlling the amount of blind hole debugging, so as to increase adjustment The effect of reducing accuracy and difficulty

Active Publication Date: 2021-01-22
GUANGDONG GOVA ADVANCED MATERIAL TECH
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  • Application Information

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Problems solved by technology

from figure 2 It can be seen from the figure that the aperture of the blind hole is usually small, and the depth of the blind hole needs to be set very deep, but limited by the small diameter and deep depth of the blind hole, when debugging the depth of the blind hole to adjust the tolerance In the process of capacitive coupling, it is difficult to accurately control the debugging amount of the blind hole depth, resulting in poor adjustment accuracy of the capacitive coupling of the dielectric waveguide filter, which is difficult to meet the actual use requirements

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  • A kind of capacitive coupling structure and preparation method thereof
  • A kind of capacitive coupling structure and preparation method thereof
  • A kind of capacitive coupling structure and preparation method thereof

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[0053] In the actual manufacturing process, the formation of the coupling adjustment region 600 may include two methods: one is to form a mask layer at the position where the coupling adjustment region 600 is about to be formed during the process of forming the metal layer 500, so as to The metal layer 500 is not formed in this area, so that the coupling adjustment area 600 is formed simultaneously during the formation of the metal layer 500; the other is to form the coupling adjustment area 600 after forming the metal layer 500 that protects the outer surface of all dielectric shells. The position of the adjusting region 600 is etched away by using an etching process, an engraving process or a grinding process to etch away the metal layer 500 in this area, so as to form the coupling adjusting region 600 . The present application does not limit the specific formation process of the coupling adjustment region 600 , which depends on the actual situation.

[0054] On the basis of...

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Abstract

The invention discloses a capacitive coupling structure and a preparation method thereof. The capacitive coupling structure is provided with a coupling adjustment region which at least penetrates through a metal layer on the side of the coupling connection position of e two resonant cavities back to a blind hole structure so that capacitive coupling adjustment of the dielectric waveguide filter having the capacitive coupling structure can be realized by adjusting the area size of the coupling adjustment region and / or the depth extending into the dielectric housing, the limitation of small blind hole diameter and low depth of blind hole depth adjustment can be avoided, the difficulty of the capacitive coupling debugging process of the dielectric waveguide filter can be reduced, and the adjusting accuracy of capacitive coupling of the capacitive dielectric waveguide filter can be increased.

Description

technical field [0001] The present application relates to the technical field of filters, and more specifically, relates to a capacitive coupling structure and a preparation method thereof. Background technique [0002] Dielectric waveguide filters are filters made of high dielectric constant ceramic materials, which have many advantages such as small size, low loss, small frequency temperature coefficient and thermal expansion coefficient, and high Q value. [0003] In the practical application process, the dielectric waveguide filter needs to form a capacitive coupling structure to realize the transmission zero point. In the prior art, the capacitive coupling of the two resonant cavities is usually achieved by forming a deep blind hole at the connection position of the two coupled resonant cavities of the dielectric waveguide filter, and by controlling the bottom of the blind hole and the bottom surface of the resonant cavity Capacitive coupling is controlled by means of ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01P1/20H01P11/00
CPCH01P1/2002H01P11/007
Inventor 何钟鑫肖利蒙黄伟杰龙志勇杨继聪黄万强
Owner GUANGDONG GOVA ADVANCED MATERIAL TECH