Dielectric filter, dielectric resonator, cover plate unit and communication equipment

A dielectric resonator and dielectric resonance technology, which is applied to resonators, waveguide devices, electrical components, etc., can solve problems such as poor contact and changes in filter performance indicators, and achieve the effect of reducing dimensional accuracy requirements

Active Publication Date: 2012-08-01
ANHUI TATFOOK TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] During the research process of the present invention on the prior art, the inventors of the present invention found that in the above prior art: due to the direct contact between the elastic object and the dielectric resonant column, the contact surface b

Method used

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  • Dielectric filter, dielectric resonator, cover plate unit and communication equipment
  • Dielectric filter, dielectric resonator, cover plate unit and communication equipment
  • Dielectric filter, dielectric resonator, cover plate unit and communication equipment

Examples

Experimental program
Comparison scheme
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Example Embodiment

[0033] The first embodiment is a dielectric resonator. See figure 2 , figure 2 A cross-sectional schematic diagram of a dielectric resonator 200 and its cover unit 220 according to a preferred embodiment of the present invention is shown. Such as figure 2 As shown, the dielectric resonator 200 includes a cavity 210, a cover unit 220, and a dielectric resonant column 230.

[0034] The cover unit 220 covers the cavity 210 to form a resonant cavity 240; the dielectric resonant column 230 is disposed in the resonant cavity 240, and one end of the dielectric resonant column 230 is in contact with the cavity 210, wherein the cover The unit 220 includes an upper cover 222 and a lower cover 224, and a spacer 250 provided between the upper cover 222 and the lower cover 224, and the lower cover 224 is provided through the spacer 250. Pressure is applied to make the lower cover plate 224 and the other end of the dielectric resonance column 230 closely contact, it should be noted that: i...

Example Embodiment

[0055] The second embodiment is a cover unit. Such as Figure 5 Shown, shown Figure 4 The partial structural diagram of the cover unit of the dielectric resonator shown, specifically, Figure 5 A schematic diagram showing the structure of the lower bottom surface of the upper cover plate of the cover plate unit 420 according to the embodiment of the present invention. See also Figure 4 The cover unit 420 according to the embodiment of the present invention includes an upper cover 422 and a lower cover 424, and the lower cover 424 is relatively thin. The upper cover 422 includes a main body 4221 and a protruding portion 4222. The protruding portion 4222 is in close contact with the lower cover 424; the protruding portion 4222 is integrally formed with the main body 4221, and the protruding portion 4222 is discretely arranged under the upper cover 422. The surface can be formed by stamping. It is easy to understand that the protrusion 4222 may also be an integral protrusion st...

Example Embodiment

[0056] Example three, please refer to Image 6 with Figure 7 , Image 6 Shows a schematic cross-sectional view of a dielectric filter according to a preferred embodiment of the present invention, Figure 7 shown Image 6 A schematic diagram of the cover unit of the dielectric filter shown.

[0057] From Image 6 It is easy to see that the dielectric filter 500 includes a plurality of the above-mentioned dielectric resonators, and the dielectric filter works by coupling the multiple resonant cavities with each other. Multiple upper cover plates and multiple lower cover plates of multiple dielectric resonators can be integrally formed respectively to form a whole upper cover plate and a whole lower cover plate. At the same time, the cavity has a multi-cavity structure, and the integral lower cover plate is in the cavity. Each dielectric resonator column is in elastic close contact.

[0058] Figure 8 A schematic cross-sectional view of a dielectric filter 600 according to another pr...

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PUM

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Abstract

An embodiment provided in the invention discloses a dielectric resonator and a cover plate unit, wherein the dielectric resonator comprises a cavity, a cover plate unit and a dielectric resonance column, and the cavity is capped with the cover plate unit to form a resonance cavity; the dielectric resonance column is set in the resonance cavity, a first end of the dielectric resonance column contacts with the cavity; the cover plate unit further comprises an upper cover plate, a lower cover plate set under the upper cover plate and a spacer set between the upper cover plate and the lower cover plate, and the lower cover plate is made to contact with a second end of the dielectric resonance column through mutual squeezing action between the spacer and the lower cover plate. In addition, the embodiment provided in the invention further discloses a dielectric filter and communication equipment using the dielectric filter, and with the dielectric filter, the communication equipment and performance index of the dielectric filter can be optimized to a great extent.

Description

【Technical field】 [0001] The invention relates to the technical field of dielectric filters, in particular to a dielectric resonator and its cover unit, and also to a dielectric filter using the dielectric resonator and a communication device using the dielectric filter. 【Background technique】 [0002] As a frequency selection device, dielectric filters are widely used in the field of communication, especially in the field of radio frequency communication. In the base station, the dielectric filter is used to select the communication signal and filter out the clutter or interference signal outside the frequency of the communication signal. [0003] Dielectric filters are designed and manufactured using the characteristics of low loss, high dielectric constant, frequency temperature coefficient and thermal expansion coefficient of dielectric ceramic materials, and can withstand high power. It is characterized by low insertion loss and good power resistance. [0004] See fig...

Claims

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Application Information

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IPC IPC(8): H01P7/10H01P1/20
Inventor 孙尚传童恩东申风平吴文敬
Owner ANHUI TATFOOK TECH CO LTD
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