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Coaxial cavity resonator

A coaxial cavity and resonator technology, applied in resonators, waveguide devices, circuits, etc., can solve the problems of poor mechanical stability and large size, and achieve strong mechanical strength, reduced cavity volume, and space saving Effect

Inactive Publication Date: 2004-04-07
INTEL CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the design of the conductor, although the size of this resonator is reduced, its size is still quite large, and it has the disadvantage of poor mechanical stability when the volume of the cavity is reduced

Method used

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  • Coaxial cavity resonator
  • Coaxial cavity resonator
  • Coaxial cavity resonator

Examples

Experimental program
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Embodiment Construction

[0036] FIG. 1 shows a cap resonator 10 of the prior art. Among other things, it includes a conductor 11 located in a cavity 12 . The cavity 12 has side walls 13 , a top wall 14 and a bottom wall 15 . The conductor 11 includes a conductor rod 16 and a main conductor disk 17 . One end 16a of the rod 16 is connected to the first surface 17a of the main disc 17 . The free end 16 b of the conductor rod 16 is short-circuited to the bottom wall 15 of the cavity 12 . A second face 17 b of the main conductor disc 17 opposite to the first face 17 a is open with respect to the top wall 14 of said cavity 12 . The capacitive coupling 18 between the main conductor disc 17 and the top wall 14 and side walls 13 of the cavity 12 shortens the length L required for the conductor 11 to operate at a particular frequency. 1 .

[0037] Figures 2a and 2b show a modified embodiment of a cap resonator 20 according to the invention, in which one or more plates 21 are located within the cavity 12. ...

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PUM

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Abstract

The construction is a coaxial cavity resonator (20, 30, 40, 50) comprising at least one conductive body (11, 31), which body is open at one end and shortened from a quarter-wave resonator. The conductive body includes a main rod (16), which is in one end attached to the cavity wall (15), and a main disc (17) attached to the free end of the main rod (16). The cavity (12) further comprises one or more conductive plates (21, 41, 51) located between the main disc (17) and the side walls (13), at the first side (17a) of, and out of galvanic contact with, the main disc (17). The shortening is carried out by creating air-insulated extra capacitance between the resonator cavity walls via the conductive plates and a mechanical structure at the open end of the conductive body.

Description

technical field [0001] The invention relates to a coaxial cavity resonator which is particularly suitable as a structural part of a filter in a radio device. Background technique [0002] Resonators are major structural components in the manufacture of oscillators and filters. Important characteristics of a resonator include Q, size, mechanical stability, temperature and humidity stability, and manufacturing cost. [0003] Resonator structures known so far include the following: [0004] 1) Resonators made of discrete components such as capacitors, inductors, etc. [0005] This type of resonator necessarily has the disadvantage of component internal dissipation, so its Q value is significantly lower compared with other types of resonators. [0006] 2) Microstrip resonator [0007] Microstrip resonators are formed, for example, in the conductor area on the surface of the circuit board. The disadvantage is the lower Q due to radiation loss due to the open structure. [0...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01P7/04
CPCH01P7/04H01P7/06
Inventor 托莫·拉蒂安蒂·卡那沃
Owner INTEL CORP