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Microwave Dielectric Resonator

A dielectric resonator and microwave dielectric technology, applied in resonators, waveguide devices, electrical components, etc., to achieve high Q value, high reliability, and small size

Active Publication Date: 2017-07-28
江苏灿勤科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional cavity filters or dielectric cavity filters use aluminum materials such as AL6061 as the material of the cavity, which makes the realization of the dielectric cavity filter, due to the fact that aluminum is used as a metal part and a dielectric material There are serious reliability problems when soldering resonators

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1~3

[0033] Embodiment 1~3: A kind of microwave dielectric resonator comprises cavity 1 and dielectric resonator 2, and described dielectric resonator is cylinder 4 with through hole 3; Described dielectric resonator 2 is made up of following mass percentage content The component composition is as shown in Table 1:

[0034] Table 1

[0035]

[0036] One end of the dielectric resonator 2 is plated with a silver layer 5, and the other end of the dielectric resonator 2 is welded in the cavity 1;

[0037] The cavity 1 is composed of the following components in mass percentage as shown in Table 2:

[0038] Aluminum oxide calcium carbonate Lanthanum oxide Samarium oxide Example 1 95% 3% 1.5% 0.5% Example 2 95.5% 3% 1.1 % 0.4% Example 3 96% 2.5% 1 % 0.5%

[0039] The relative permittivity of the cavity 1 is 9.5.

[0040] The above-mentioned dielectric resonator 2 is composed of the following components in mass percentage:

[0041] 30...

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Abstract

The invention discloses a microwave dielectric resonator, comprising a cavity and a dielectric resonator, the dielectric resonator is a cylinder with a through hole; the dielectric resonator is composed of the following components in mass percentage: calcium carbonate, Aluminum oxide, neodymium oxide, titanium dioxide; one end of the dielectric resonator is coated with a silver layer, and the other end of the dielectric resonator is welded in the cavity; the cavity is composed of the following components in mass percentage: alumina 95~ 96%, calcium carbonate 2~3%, lanthanum oxide 0.8~1.5%, samarium oxide 0.2~0.5%; the relative dielectric constant of the cavity is 9.5; the surface roughness of the inner wall of the cavity is about 0.8; the cavity The internal wall is covered with a metal layer through sputtering or electroless plating. The microwave dielectric resonator of the invention has a high Q value, and the tuning range can reach 7%-10% at a specified frequency. The general tuning range of the TE mode resonator is 3%-4%.

Description

technical field [0001] The invention relates to a microwave dielectric resonator and belongs to the field of reciprocal microwave devices. Background technique [0002] In mobile communication base station systems, microwave dielectric resonators are commonly used to select frequencies for signals transmitted and received by antennas. Traditional cavity filters or dielectric cavity filters use aluminum materials such as AL6061 as the material of the cavity, which makes the realization of the dielectric cavity filter, due to the fact that aluminum is used as a metal part and a dielectric material There are serious reliability problems when welding resonators. Therefore, how to design a microwave dielectric resonator with high Q value, small volume, adjustable temperature coefficient, high reliability of product structure, and good consistency of thermal expansion coefficient between cavity and dielectric resonator; The direction of efforts of those of ordinary skill in the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01P7/10H01P7/06
Inventor 朱田中
Owner 江苏灿勤科技股份有限公司
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