Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

TM (transverse magnetic)-mode dielectric filter

A dielectric filter and dielectric resonator technology, applied in waveguide devices, electrical components, circuits, etc., can solve the problems of fatigue fracture of solder joints, affecting the service life and performance of filters, etc., to prolong the service life and solve the problems of soldering Point fatigue fracture, the effect of improving the reliability of solder joints

Inactive Publication Date: 2014-08-06
HUAWEI MACHINERY
View PDF5 Cites 11 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the dielectric resonator is a ceramic material, its thermal expansion coefficient is about 10, while the filter cavity and cover plate are generally made of aluminum alloy, and its thermal expansion coefficient is about 23. After the dielectric double-ended welding is assembled, the thermal expansion coefficient of the two is very different. It will lead to fatigue fracture of solder joints after welding cooling, which will affect the service life and performance of filter products

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • TM (transverse magnetic)-mode dielectric filter
  • TM (transverse magnetic)-mode dielectric filter
  • TM (transverse magnetic)-mode dielectric filter

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0028] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0029] see figure 1 , the present invention provides a TM mode dielectric filter 100, which belongs to the double-end welded TM mode dielectric filter, which includes a housing 10 with an opening 12, a cover plate 15, a dielectric resonator 20 and an installation layer (not shown in the figure ). The cover plate 15 covers the opening 12 side of the casing 10 . The installation layer is installed on the casing 10 . The dielectric resonator 20 is locat...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides a TM (transverse magnetic)-mode dielectric filter which comprises a shell, a cover plate, a dielectric filter and a mounting layer. An opening is formed in the shell, the cover plate covers the opening side of the shell, the mounting layer is arranged on the shell, the dielectric filter is positioned between the cover plate and the shell, two opposite ends of the dielectric filter are respectively welded with the cover plate and the mounting layer, and a thermal expansion coefficient of the mounting layer and a thermal expansion coefficient of the cover plate range from a thermal expansion coefficient of the shell and a thermal expansion coefficient of the dielectric filter.

Description

technical field [0001] The invention relates to a TM mode dielectric filter. Background technique [0002] With the miniaturization of wireless base stations, the requirements for the miniaturization of filters are getting higher and higher. The double-ended welded transverse magnetic wave mode dielectric filter (referred to as TM mode dielectric filter) which can significantly reduce the volume of the filter and the conventional Cavity resonators have the advantages of small size, low loss, and high temperature stability. This kind of double-end welded TM mode dielectric filter requires that the upper and lower ends of the dielectric resonator be welded to the cover plate and the bottom of the cavity respectively, and the cover plate and the cavity are welded or screwed; thus realizing the double-end welded TM mode One of the core technologies of dielectric filters is that the double ends of the dielectric require reliable welding assembly technology. However, since the d...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): H01P1/201H01P1/207
Inventor 李金艳何大鹏吴正旺
Owner HUAWEI MACHINERY
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com