Unlock instant, AI-driven research and patent intelligence for your innovation.

Multi-mode cavity filter

A multi-mode cavity and filter technology, applied in the field of filters, can solve the problems of increasing physical complexity and manufacturing costs

Inactive Publication Date: 2015-10-21
MESAPLEXX
View PDF12 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this case, the physical complexity and thus manufacturing cost is even further increased compared to using the added defect alone

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
  • Multi-mode cavity filter
  • Multi-mode cavity filter
  • Multi-mode cavity filter

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0054] will now refer to Figure 1a and 1b to describe an example of a multimode filter.

[0055] The basis of the invention is the use of a specific type of coupling aperture to couple signals into and out of a multimode resonator while simultaneously exciting two or more modes within (or coupling energy from) the resonator.

[0056] In this example, filter 100 includes a resonator body 110 encapsulated in a metallization layer (which is not shown for clarity). At least two vias are formed in the metallization layer: an in-coupling via 120 and an out-coupling via 130 . These small holes consist of the absence of metallization, where the rest of the resonator body is essentially encapsulated in its metallization layer. Apertures 120 and 130 may be formed, for example, by chemically or mechanically etching metallisation around resonator body 110 to remove the metallisation and thereby form one or more apertures. Other means may also be used to form the aperture or apertures, ...

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

A multi-mode cavity filter, comprising at least first and second dielectric resonator bodies, each of which incorporates a piece of dielectric material, the first piece of dielectric material having a shape such that it can support at least a first resonant mode and at least a second resonant mode that is substantially degenerate with the first resonant mode, and the second piece of dielectric material having a shape such that it can support at least a third resonant mode and at least a fourth resonant mode that is substantially degenerate with the third resonant mode, a layer of electrically conductive material in contact with and covering at least a surface of the first dielectric resonator body and a surface of the second dielectric resonator body, at least one aperture in the layer of electrically conductive material, wherein the at least one aperture comprises at least first and second contiguous or separate portions, wherein the first portion is arranged to transfer signals from at least the first or second resonant mode in the first dielectric resonant body to at least the third or fourth resonant mode in the second dielectric resonant body and the second portion is arranged to transfer signals from at least the first or second resonant mode in the first dielectric resonant body to at least the third or fourth resonant mode in the second dielectric resonant body in parallel.

Description

technical field [0001] The present invention relates to filters and in particular to multimode filters comprising resonator bodies for use eg in frequency division duplexers for telecommunication applications. Background technique [0002] Reference in this specification to any prior publication (or information derived therefrom) or known material is not and should not be construed as such prior publication (or information derived therefrom) or known material constitutes An acknowledgment or permission or implication of any kind that is part of the common general knowledge in the field to which the description relates. [0003] All physical filters essentially consist of many energy storing resonant structures with paths for energy flow between the various resonators and between the resonators and the input / output ports. The physical implementation of the resonators and the way they are interconnected will differ for the different types, but the same basic concept applies t...

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): H01P1/208
CPCH01P1/2086H01P7/105
Inventor P.B.科宁格顿D.R.亨德里S.J.库珀
Owner MESAPLEXX