TM mold dielectric filter

A dielectric filter and filter technology, which is applied to waveguide-type devices, circuits, electrical components, etc., can solve problems such as different degrees of shrinkage, inconsistent expansion coefficients, and rupture of dielectric resonant columns.

Active Publication Date: 2014-01-22
PROSE TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing TM dielectric filter directly welds the dielectric resonant column and the shell, but the expansion coefficients of the two materials are inconsistent. crushed and broken

Method used

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Embodiment 1

[0037] The embodiment of the present application discloses a TM mode dielectric filter, the structural diagram of which is as follows figure 1 As shown, it includes: a cover plate 101 , a housing 102 , a dielectric resonance column 103 and a first mounting piece 104 .

[0038] Wherein, the housing 102 has an opening, the cover plate 101 is placed on the opening side of the housing 102, one end of the dielectric resonance column 103 is welded with the first mounting piece 104 to form a dielectric resonance column assembly, and the dielectric resonance column assembly is fixed on between the housing 102 and the cover 101 .

[0039] Due to the different thermal expansion coefficients of the dielectric resonance column and the shell and cover plate, if the dielectric resonance column is directly welded to the shell or cover plate, when the temperature rises or falls, due to the different thermal expansion coefficients, the dielectric resonance column, the cover plate and the shell...

Embodiment 2

[0046] The embodiment of this application discloses another kind of TM mode dielectric filter, and its structural diagram is as follows Figure 4 As shown, it includes: a cover plate 401 , a housing 402 , a dielectric resonance column 403 , a first mounting piece 404 and a tuning screw 405 .

[0047] Wherein, the tuning screw 405 is fixed on the cover plate 401, and the diameter of the tuning screw 405 is smaller than or equal to the diameter of the circular hole on the first mounting piece 404, which is convenient for the tuning screw to pass through. The housing 402 has an opening, the cover plate 401 is placed on the opening side of the housing 402, the inner bottom surface of the housing 402 is provided with a first groove 406, the inner bottom surface of the cover plate 401 is provided with a second groove 407, and the dielectric resonance column 403 is welded The dielectric resonance column assembly is formed on the first mounting piece 404. The height of the dielectric ...

Embodiment 3

[0051] A TM mode dielectric filter disclosed in the embodiment of the present application, its structural schematic diagram is as follows Figure 5 As shown, it includes: a cover plate 501 , a housing 502 , a dielectric resonance column 503 , a first mounting piece 504 and fastening screws 507 .

[0052] Wherein, the housing 502 has an opening, the cover plate 501 is placed on the opening side of the housing 502, the inner bottom surface of the housing 502 is provided with a first groove 506, and the dielectric resonance column is welded on the first mounting piece to form a dielectric resonance column assembly. The height of the resonance column assembly is smaller than the distance between the first groove 506 and the cover plate 501 , and the dielectric resonance column assembly is fixed on the first groove 506 by fastening screws 507 . In this embodiment, the TM mode dielectric filter may further include a tuning screw 505 fixed on the cover plate 501 .

[0053] In the TM...

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PUM

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Abstract

The invention discloses a TM mold dielectric filter. The TM mold dielectric filter comprises a housing, a cover plate, a first installation sheet and at least one dielectric resonance column, wherein the housing is provided with an opening; the cover plate is fixed at the opening side of the housing; at least one of the dielectric resonance column is welded with the first installation sheet so as to form a dielectric resonance column assembly; and the dielectric resonance column assembly is fixed between the housing and the cover plate. According to the TM mold dielectric filter provided by the application of the invention, the first installation sheet can balance the expansion difference between the housing and the dielectric resonance column so as to prevent the cracks of the dielectric resonance column because the housing, the cover plate and the dielectric resonance column contract or have different expansion degrees when temperature changes.

Description

technical field [0001] The invention belongs to the field of wireless communication, in particular to a TM mode dielectric filter. Background technique [0002] With the rapid development of wireless communication systems, the requirements for the quality of propagation signals are getting higher and higher. Setting high-quality filters in mobile communication base stations can control interference signals from entering communication channels, thereby improving the quality of propagation signals. [0003] In a waveguide, the longitudinal component of the magnetic field is zero, and the propagation mode in which the longitudinal component of the electric field is not zero is the TM mode. The existing TM mode dielectric filter is composed of a housing, a cover plate, a dielectric resonant column and a tuning screw. Due to its low cost, wide frequency adjustable range and high temperature stability, it is more and more widely used in the field of wireless communication. [000...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01P1/201H01P1/208H01P1/30
Inventor 徐晨阳徐刚程晓辉黄磊
Owner PROSE TECH CO LTD
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