CN209357885U

CN209357885U - The three mould resonance structure of cavity and the filter containing the resonance structure of a kind of evagination

Info

Publication number: CN209357885U
Application number: CN201821610518.7U
Authority: CN
Inventors: 孟庆南
Original assignee: Hongkong Van Valley Development Co Ltd
Current assignee: Hongkong Van Valley Development Co Ltd
Priority date: 2018-09-30
Filing date: 2018-09-30
Publication date: 2019-09-06
Anticipated expiration: 2028-09-30

Abstract

The utility model patent discloses a kind of cavity multimode resonance structure of evagination and the filter containing the resonance structure, including cavity and cover board, dielectric resonance block and dielectric support frame are provided in cavity, at least one end face evagination of cavity and/or dielectric resonance block, dielectric resonance block and dielectric support frame constitute three mould medium resonant rods, similar square dielectric resonance block one end or arbitrary end are connect with dielectric support frame respectively, dielectric support frame is attached with cavity inner wall, and dielectric resonance block forms three mould resonance in three directions of X, Y, Z axis of cavity.Use the cavity filter of the utility model that can guarantee to obtain high q-factor under the smaller spacing of resonant rod and cavity, the tuning range of tuning screw is increased simultaneously, the small spacing between cavity and dielectric resonance block is reduced to the susceptibility of resonance frequency simultaneously, debugging easy to produce, reduces production cost.

Description

The three mould resonance structure of cavity and the filter containing the resonance structure of a kind of evagination

Technical field

The utility model relates to base station filters used in wireless communication field, antenna feeder class filter, combiner and resist The type of interference filter etc., filter can be band logical, band resistance, high pass, low pass, and in particular to a kind of three mould of cavity of evagination The filter of resonance structure and the three mould resonance structure of cavity containing the evagination.

Background technique

Miniaturization and high property as forth generation mobile communication is to the fast development of the 5th generation mobile communication, to communication apparatus The requirement of energyization is higher and higher.Conventional filter is since its wire chamber volume is larger and performance is general, therefore gradually by single mode medium Filter replaces, and single mode dielectric filter mainly includes TE01 mould dielectric filter and TM mould dielectric filter, TE01 mould medium Filter and TM mould dielectric filter generally mostly use the mode of single mode dielectric resonance, although which is able to ascend centainly Q value, but its there are costs of manufacture high, bulky disadvantage.

Single mode dielectric filter is at high cost, bulky technical problem in order to solve, and three mould dielectric filters come into being. In the prior art, three mould dielectric filters are generally divided into tri- mode filter of tri- mode filter of TE and TM.Tri- mode filter of TE has The feature that coupled modes are complicated, volume is big, Q value is high；Tri- mode filter of TM is with coupled modes are simple, small in size, Q value is low Feature.For tri- mode filter of tri- mode filter of TE and TM of similar frequency bands, the weight of tri- mode filter of TM, cost and Tri- mode filter of volume ratio TE it is much smaller.Therefore generally be used for tri- mode filter of TE to design narrow band filter in the prior art, The filter of remaining type generally uses tri- mode filter of TM.Since silver can be roasted on the dielectric resonance block of tri- mode filter of TM, roast The substance for foring glassy state after silver between silver layer and the surface of dielectric resonance block, causes realistic conductivity to be greatly reduced, from And practical Q value is lower, further limits the use scope of tri- mode filter of TM.Therefore how to obtain a kind of small size, high q-factor Tri- mode filter of TM is the new direction of filter research and development.

Existing tri- mode filter of TM is generally using setting cube in cube/class cube/spherical cavity resonator Body/class cube/spherical dielectric resonator block structure, dielectric resonance block is by medium base supports, and the single side size of resonant cavity 1.6 are generally higher than with the ratio of the single side size of dielectric resonance block.When the volume of resonant cavity remain unchanged and dielectric resonance block omit When being slightly variable big or the volume of resonant cavity slightly becomes smaller and dielectric resonance block remains unchanged or the volume of resonant cavity slightly becomes smaller And dielectric resonance block is when slightly becoming larger, the data comparison provided by table 1 it is found that with resonant cavity single side size and dielectric resonance The Q value of the increasing of the single side size ratio of block, basic mode can be increased with the increase of ratio, and the Q value of higher mode can be with the increasing of ratio Add and reduce, dielectric resonance block size reduces as ratio increases, and the size of cavity continues to increase, close to 3/4 wave of cavity When long size, since the size of dielectric resonance block constantly reduces, basic mode Q value is also decreased, and the frequency of higher mode is with ratio Increase, it is close when remote when from fundamental frequencies.

The cavity volume of the corresponding resonant cavity of different ratios is also different, can select according to actual needs.In 1 ratio range of table Interior various sizes of cavity and corresponding similar cube resonator can choose ratio when requiring very high to performance of filter In the single-chamber of 1.6 dimensions above.Therefore when the ratio of the single side size of the single side size and dielectric resonance block of resonant cavity is greater than 1.6 When, the size of the spacing between the size and resonant cavity and dielectric resonance block of Q value is proportional, but its bring is the disadvantage is that filtering Body product is excessively huge.

Application No. is disclosing three mode structure of cavity of a kind of small size, high q-factor in 2018101455572 patent, It is arranged in parallel by the outer surface and cavity inner surface that guarantee dielectric resonance block and can be in the case that two surface spacing are minimum The Q value for effectively reducing the volume of filter, improving it.But such structure has the following technical problems: 1. because of dielectric resonance The spacing of block and cavity inner wall is minimum, therefore the adjustable range of tuning screw is limited, to be unfavorable for the installation of dielectric resonance block Debugging；2. spacing between dielectric resonance block and cavity is to list because the spacing of dielectric resonance block and cavity inner wall is minimum Chamber resonance frequency susceptibility is higher, to be unfavorable for the batch production of dielectric resonance block；3. because in dielectric resonance block and cavity The minimum spacing of wall is higher to single-chamber resonance frequency susceptibility, therefore the requirement of the design accuracy of dielectric resonance block and cavity is high, To increase processing and manufacturing cost.

Table 1:

Summary of the invention

In view of the above-mentioned drawbacks of the prior art, the technical problem to be solved by the present invention is to provide a kind of evaginations Three mould resonance structure of cavity and the filter containing the structure, can reduce filter entirety insertion loss, to meet cavity Requirement of the filter to smaller plug-in unit and smaller volume.

The utility model discloses a kind of three mould resonance structures of cavity of evagination comprising cavity and cover board, the cavity It is inside provided with dielectric resonance block, dielectric support frame frame, the cavity is similar square shape, and the dielectric resonance block is similar Square shape and at least one end face evagination, the dielectric support frame frame is respectively and in the dielectric resonance block and the cavity Wall connection, the dielectric resonance block and the dielectric support frame frame constitute three mould medium resonant rods, the dielectric support frame frame Dielectric constant is less than the dielectric constant of the dielectric resonance block；It is given an account of when the unilateral size of the cavity inner wall is corresponding Ratio K between the unilateral size of matter resonance block are as follows: when 1≤K of transfer point≤transfer point 2, the three moulds resonance structure and its The adjacent higher mode Q value of basic mode is converted to the basic mode Q value of the three moulds resonance structure, and the fundamental resonance frequencies after conversion, which are equal to, to be turned Fundamental resonance frequencies before changing, the basic mode Q value before basic mode Q value > conversion after conversion, the high order adjacent with basic mode after conversion Mould resonance frequency is equal to the high-order mode resonance frequency adjacent with basic mode before conversion, the higher mode Q adjacent with basic mode after conversion The higher mode Q value adjacent with basic mode before value < conversion；It is provided in the three moulds resonance structure for changing degeneracy in cavity The coupled structure of three mould electromagnetic field orthogonal properties；It is provided in the three moulds resonance structure humorous for changing three mould of degeneracy in cavity The frequency tuning devices of vibration frequency.

In a kind of preferred embodiment of the utility model comprising cavity and cover board are provided with Jie in the cavity Matter resonance block, dielectric support frame frame, the cavity are similar square shape and at least one end face evagination, the dielectric resonance Block is similar square shape, and the dielectric support frame frame is connect with the dielectric resonance block and the cavity inner wall respectively, institute It states dielectric resonance block and the dielectric support frame frame constitutes three mould medium resonant rods, the dielectric constant of the dielectric support frame frame is small In the dielectric constant of the dielectric resonance block；When the corresponding dielectric resonance block list of the unilateral size of the cavity inner wall Ratio K between the size on side are as follows: when 1≤K of transfer point≤transfer point 2, the three moulds resonance structure it is adjacent with its basic mode Higher mode Q value is converted to the basic mode Q value of the three moulds resonance structure, and the fundamental resonance frequencies after conversion are equal to the basic mode before conversion Resonance frequency, the basic mode Q value before basic mode Q value > conversion after conversion, the high-order mode resonance frequency adjacent with basic mode after conversion Equal to the high-order mode resonance frequency adjacent with basic mode before conversion, before the higher mode Q value < conversion adjacent with basic mode after conversion The higher mode Q value adjacent with basic mode；It is provided in the three moulds resonance structure for changing three mould electromagnetic field of degeneracy in cavity The coupled structure of orthogonal property；It is provided in the three moulds resonance structure for changing the frequency of three mould resonance frequency of degeneracy in cavity Rate tuner.

In a kind of preferred embodiment of the utility model comprising cavity and cover board are provided with Jie in the cavity Matter resonance block, dielectric support frame frame, the cavity are similar square shape and at least one end face evagination, the dielectric resonance Block is similar square shape and at least one end face evagination, the dielectric support frame frame respectively with the dielectric resonance block and institute Cavity inner wall connection is stated, the dielectric resonance block and the dielectric support frame frame constitute three mould medium resonant rods, the medium branch The dielectric constant of support frame is less than the dielectric constant of the dielectric resonance block；When the unilateral size of the cavity inner wall is corresponding The unilateral size of the dielectric resonance block between ratio K are as follows: when 1≤K of transfer point≤transfer point 2, the three moulds resonance knot The higher mode Q value adjacent with its basic mode of structure is converted to the basic mode Q value of the three moulds resonance structure, the fundamental resonance frequency after conversion Rate is equal to the fundamental resonance frequencies before conversion, basic mode Q value > after conversion convert before basic mode Q value, after conversion with basic mode phase Adjacent high-order mode resonance frequency is equal to the high-order mode resonance frequency adjacent with basic mode before conversion, adjacent with basic mode after conversion The higher mode Q value adjacent with basic mode before higher mode Q value < conversion；It is provided in the three moulds resonance structure for changing cavity The coupled structure of interior three mould electromagnetic field orthogonal property of degeneracy；It is provided in the three moulds resonance structure for changing degeneracy in cavity The frequency tuning devices of three mould resonance frequencies.

In a kind of preferred embodiment of the utility model, the dielectric resonance block is solid construction or hollow structure； The hollow space of the dielectric resonance block of hollow structure is filled with air or nested dielectric resonance block, the nesting dielectric resonance block Volume is less than or equal to the volume of the hollow chamber.

In a kind of preferred embodiment of the utility model, the nesting dielectric resonance block be similar square shape and At least one end face evagination.

In a kind of preferred embodiment of the utility model, at least one end face setting of the nesting dielectric resonance block There is thin film dielectrics.

In a kind of preferred embodiment of the utility model, at least one end face of the cavity or/and the medium At least one end face of resonance block is provided with thin film dielectrics.

In a kind of preferred embodiment of the utility model, the value of the transfer point 1 and the value of the transfer point 2 can With the fundamental resonance frequencies of the dielectric resonance block, the dielectric constant of the dielectric resonance block, support frame as described above dielectric constant Difference and generate variation.

In a kind of preferred embodiment of the utility model, the fundamental resonance of the dielectric resonance block after keeping conversion When frequency is constant, the dielectric constant of the Q value of the three moulds resonance structure and the value of the K and the dielectric resonance block and and The size of the dielectric resonance block is related.

In a kind of preferred embodiment of the utility model, when the value of K increases to maximum from 1.0, the value of K exists There is Q value transfer point at three in variation range, each Q value transfer point makes its basic mode Q value and the higher mode Q value adjacent with its basic mode It changes, when the higher mode Q value adjacent with basic mode is converted into basic mode Q value, makes its Q value than not converting preceding increase.

In a kind of preferred embodiment of the utility model, Q value turns at the starting point of the value of K, terminating point and three It changes in 4 regions formed, basic mode Q value and the higher mode Q value adjacent with basic mode are with cavity size and medium resonant rod block Change in size and gradually change, different zones be applied to filter demand have nothing in common with each other.

In a kind of preferred embodiment of the utility model, value≤1.30,1.03≤conversion of 1.03≤transfer point 1 Value≤1.30 of point 2, the value of the value < transfer point 2 of transfer point 1.

In a kind of preferred embodiment of the utility model, the coupled structure is set on the dielectric resonance block, The coupled structure includes at least hole and/or slot and/or corner cut and/or the chamfering of two non-parallel arrangements.

In a kind of preferred embodiment of the utility model, the slot or the corner cut or the chamfering are set to described At the seamed edge of dielectric resonance block.

In a kind of preferred embodiment of the utility model, the hole or slot are set to the end face of the dielectric resonance block On, the center line of the hole or slot is parallel with perpendicular to the seamed edge of end face for offering hole or slot on dielectric resonance block.

In a kind of preferred embodiment of the utility model, the coupled structure is set on the cavity, the coupling Structure is closed to include at least the chamfering of two non-parallel arrangements being set at cavity interior angle and/or boss and/or be set to cavity Tap line/piece that is interior and not contacted with the dielectric resonance block.

In a kind of preferred embodiment of the utility model, the frequency tuning devices include the tune being set on cavity Humorous screw rod/disk and/or be set to the film on dielectric resonance block surface and/or be set to the cavity inner wall film and/ Or it is set to the film of the cover board inner wall.

In a kind of preferred embodiment of the utility model, be provided on described at least one end face of dielectric resonance block to A few dielectric support frame frame.

The filter of the invention also discloses a kind of three mould resonance structure of cavity containing evagination comprising cavity, Cover board, input/output structure, the interior three mould resonance structure of cavity at least provided with 1 evagination of the cavity.

In a kind of preferred embodiment of the utility model, the three mould resonance structure of cavity and singlemode resonance of the evagination Structure, bimodulus resonance structure, three mould resonance structures carry out different form combination, the filter of the different volumes of formation；Evagination Three mould resonance structure of cavity and Single-mode Resonator, bimodulus resonant cavity, between three mode resonant cavities because permutation and combination formed any two Coupling between a resonant cavity, it is necessary to be that in the case that resonant rod in two resonant cavities is parallel, two resonance could be passed through Window size realizes coupling between chamber, determines window size according to coupling amount size；The functional characteristic of the filter includes Band logical, with resistance, high pass, low pass and duplexer, multiplexer and combiner that they are formed between each other.

In a kind of preferred embodiment of the utility model, the three mould resonance structure of cavity of cavity evagination keeps resonance frequency In the case that rate is constant, ratio K, the dielectric of dielectric resonance block of three mould Q values and cavity inner wall side length and dielectric resonance block side length Constant, simultaneously it is also related with the change in size range of medium block；The range of K value and different resonance frequencies, medium resonant rod and branch The dielectric constant of support is related.

In above-mentioned technical proposal, the hollow cavity wall size dimension of three mould resonance structure of cavity and dielectric resonance of cavity evagination The variation range of the ratio K of block size, for K value from 1.0 increase to maximum when, K value has 3 transfer points in variation range, often A transfer point all makes the Q value of its fundamental resonance frequencies and the Q value of adjacent higher order resonant frequencies change, adjacent higher mode Q value When being converted into basic mode Q value, make its Q value than not converting preceding increase.

Further, in 4 regions that the starting of K value and terminating point and three of them Q value transfer point are formed, basic mode Q value and phase Adjacent high order Q value is gradually changed as cavity size and medium resonant rod block size change, and different zones are applied to filter Demand has nothing in common with each other (application of different zones is added to inside specification and case).

Further, the dielectric resonance block of the utility model is the solid construction of similar square shape, wherein similar to just Cube shape is defined as: dielectric resonance block is cuboid or square, and dielectric resonance block is equal sized in X-axis, Y-axis, Z axis When, three mould of degeneracy is formed, three mould of degeneracy couples composition pass filter with other single-chambers；In X-axis, Y-axis, Z axis three directions When dimension difference is slightly unequal, form the orthogonal three mould resonance of class, if orthogonal three moulds of class remain to be coupled into other chambers it is logical Band filter, then size can be with if three orthogonal moulds of class and other chambers cannot be coupled into pass filter, size is not all right；In X When axis, Y-axis, the size difference in three directions of Z axis are larger, three mould of degeneracy or orthogonal three moulds of class cannot be formed, but are formed not Three modes of same frequency, so that pass filter cannot be coupled into other chambers, then size is not all right.

Further, in the three mould resonance structure of cavity of cavity evagination at least provided with two for changing degeneracy in cavity The coupled structure of the non-parallel arrangement of three mould electromagnetic field orthogonal properties, coupled structure include being set to by dielectric resonance block seamed edge Corner cut and/or hole, or chamfering/corner cut including being set to by cavity seamed edge, or including being set to by dielectric resonance block seamed edge Chamfering/corner cut by corner cut and/or hole and cavity seamed edge；Or the tap line including being set in cavity in non-parallel planes or/ Piece, the shape of corner cut are triangular prism shape or rectangular-shape or segment shape, and the shape in hole is round, rectangle or polygon.It cuts Behind angle or punching, in the case where keep frequency, dielectric resonance block side length increases, and Q value slightly declines；Corner cut or the depth in hole according to The size of required coupling amount is to run through or local corner cut/part pore structure；Corner cut/chamfering/hole size influences the big of coupling amount It is small；It is disposed with coupling screw rod on the direction that coupled structure is along the perpendicular or parallel direction of corner cut and/or hole is parallel, couples screw rod Material be metal, or the material of coupling screw rod is metal and metal surface electro-coppering or electrosilvering, or the material of coupling screw rod Material for medium, or coupling screw rod is the medium of surface metalation；The shape for coupling screw rod is metallic rod, dielectric rod, metal Disk, dielectric disc, metallic rod are matched with dielectric disc, dielectric rod with metal dish, dielectric rod any in dielectric disc with metal dish, metallic rod It is a kind of.

Further, the degeneracy three of X-axis, Y-axis and Z-direction is formd in the three mould resonance structure of cavity of cavity evagination Mould, three mould of degeneracy are concentrated in the resonance frequency of X-direction by the one side or two sides field strength of the X-axis line corresponding to cavity Place installs tuning screw additional or tuning disk changes distance or changes capacitor to realize；It can lead in the resonance frequency of Y direction It crosses the place that Y-axis line one side or two sides field strength corresponding to cavity are concentrated and installs tuning screw or tuning disk additional to change distance Or change capacitor to realize；Z axis corresponding to cavity one side or two sides can be passed through in the resonance frequency of Z-direction The place that field strength is concentrated installs tuning screw or tuning disk additional to be realized to change distance or change capacitor；In addition can also pass through The medium of different shape and thickness can be pasted in dielectric resonance block surface, cavity inner wall or cover board inner wall, tuning screw bottom Constant film, thin-film material can be ceramic dielectric and ferroelectric material, adjust frequency by changing dielectric constant；Tuning screw Or it is metal and metal surface electro-coppering or electrosilvering that the material of tuning disk, which be the material of metal or tuning screw or tuning disk, Tuning screw or tune disk material be medium or tuning screw or tuning disk material be surface metalation medium；It adjusts The shape of humorous screw rod is metallic rod, dielectric rod, metal dish, dielectric disc, metallic rod matches metal dish, metallic rod matches dielectric disc, medium Bar is with metal dish, dielectric rod with any one in dielectric disc；The similar adjustable dielectric material of square dielectric resonance block Match to control the frequency-temperature coefficient of its medium block, according to frequency shift (FS) variation of the filter in different temperatures come into Row compensation；When dielectric support frame frame and fixed cavity inner wall, produced to evade cavity and dielectric material under temperature shock environment Raw stress, by between them using elastomer come transition, with padded coaming coefficient of expansion bring security risk.

Further, the three mould resonance structure of cavity of cavity evagination by cavity, dielectric resonance block and supporting framework at；Cavity When for similar to square, single similar square dielectric resonance block is installed on any one of cavity axis together with dielectric support frame frame To the center of dielectric resonance block is overlapped or approaches with the center of cavity.Approximate air dielectric support frame frame is situated between with similar square Any single-side support of mass or six face supports or two different faces, three faces, four faces and five faces carry out different Combined support, the dielectric support frame frame in each face are single or multiple dielectric support frame framves, and different sides can according to need peace Multiple support frames can also be installed by filling one.Dielectric constant is greater than support frame and the similar square that air is less than dielectric resonance block Any single-side support of medium block or six face supports or two different faces, three faces, four faces and five faces carry out different Combined support, the face for not installing support frame is air, and air surface and dielectric support frame frame can in any combination, Jie in each face Matter support frame frame is single or multiple dielectric support frame framves, or compound Jie for multilayer differing dielectric constant dielectric material composition Electric constant support frame, single layer and multilayered medium material support frame carry out any combination with similar square medium block, and different sides can Multiple support frames can also be installed to install one as needed, the face of support frame is installed, in order to keep three mould frequencies and Q value, The corresponding size in dielectric resonance block axial direction of dielectric support frame frame need to be slightly reduced；Single-side support group is combined into Supporting Media resonance Any one face of block, the bottom surface being especially vertically oriented or weight-bearing surface；The support combinations in 2 faces include parallel face, Such as top and bottom, front-back, left and right face；Also include nonparallel face, as above with front, above with below, above with the left side, on Face and the right side；The support combinations in 3 faces include: the face and a nonparallel face in three mutually perpendicular faces or two planes； The support combinations in 4 faces include: two pairs of parallel faces or a pair of parallel face and other two not parallel face；The branch in 5 faces Support combination includes: except the anterior/posterior/left side/right side/above/below any one side support construction；The support combinations in 6 faces It include: anterior/posterior/left side/all faces of the right side/above/below support construction.

Further, between similar square dielectric resonance block arbitrary end and dielectric support frame frame, using crimping, bonding or The modes such as burn-back are attached；For the connection of face or different sides combination connection, between multilayer dielectricity support frame frame by bonding, The modes such as burn-back, crimping are fixed, and dielectric support frame frame is fixed using Nian Jie, crimping, welding, burn-back, screw etc. with cavity inner wall Mode is attached；The radio frequency path that radiofrequency signal is formed in the coupling of three mould X, Y and Z-direction, can bring loss and generation Heat, dielectric resonance block by sufficiently being connect with dielectric support frame frame with metal inner surface, make its heat imported into cavity carry out it is scattered Heat.

Further, similar square dielectric resonance block is single dielectric constant or compound dielectric, and composite dielectric is normal Number is composed of two kinds and the above differing dielectric constant, the dielectric resonance block of compound dielectric composition, differing dielectric constant Material can carry out the modes such as upper and lower, left and right, asymmetry, nesting and combine, can when dielectric resonance block is nested with different medium constant With nested one layer can also nested multilayer differing dielectric constant dielectric material, the dielectric resonance block of compound dielectric needs to accord with Close the changing rule of aforementioned Q value transfer point.When carrying out trimming coupling between three mould of medium block resonant rod, in order to keep required frequency Rate, adjacent two faces of trimming need to adjust corresponding side length in parallel.Dielectric resonance block is ceramics or dielectric material, dielectric resonance block table Face can increase the media sheet of different-thickness and differing dielectric constant.

Further, the dielectric constant of dielectric support frame frame is similar to dielectric constant of air or the dielectric constant of support frame It is less than dielectric resonance block dielectric constant greater than dielectric constant of air, the surface area of dielectric support frame frame is less than or equal to similar square The surface area of body dielectric resonance block, dielectric support frame frame are the shapes such as cylindrical body, square and cuboid.Dielectric support frame frame is Solid construction or hollow structure, the dielectric support frame frame of hollow structure are single hole or porous, the shape in hole be it is round, rectangular, Polygon and arc, the material of dielectric support frame frame include air, plastics, ceramics, medium；Dielectric support frame frame and dielectric resonance Block connection, when dielectric support frame frame dielectric constant is similar to dielectric constant of air, dielectric support frame frame is to three mould resonance frequencies without shadow It rings；When the dielectric constant of dielectric support frame frame is greater than air but is less than the dielectric constant of dielectric resonance block, in order to keep original three Mould frequency, the corresponding size in dielectric resonance block axial direction of dielectric support frame frame are slightly reduced；Similar dielectric constant of air supports Frame be greater than air but be less than dielectric resonance block support frame, can combine and be installed on dielectric resonance block different directions and different corresponding Face is greater than dielectric resonance corresponding to air support frame when the support frame of above two kinds of different medium electric constants is applied in combination The axial direction size of block is slightly reduced on the basis of original.

Further, the shape of cavity is similar square, is coupled between three moulds to realize, similar pros are not being changed In the case where body dielectric resonance block size, trimming can also be carried out in two face of cavity arbitrary neighborhood to realize the coupling between three moulds It closes, trimming size is related to required coupling amount size；Three mode couplings can also be passed through with the coupling between wherein two mould similar to just Cube trimming realizes that remaining coupling realized by two adjacent side corner cuts of cavity, and when cavity adjacent edge corner cut is unable to broken wall, Chamfer need to be fully sealed with cavity.Cavity material is metal perhaps nonmetallic metal and nonmetallic surface electro-coppering or electricity It is silver-plated, the necessary electroplating of conductive material of cavity inner wall such as silver or the copper when cavity is nonmetallic materials, such as plastics and composite material Electroplating surface copper or silver.

Further, the three mould resonance structure of cavity of cavity evagination and singlemode resonance structure, bimodulus resonance structure, three moulds are humorous Structure of shaking carries out different form combination, the filter of the different volumes of formation；The three mould resonance structure of cavity and single mode of evagination are humorous It shakes chamber, bimodulus resonant cavity, the coupling between any two resonant cavity that is formed by permutation and combination between three mode resonant cavities, it is necessary to be In the case that resonant rod in two resonant cavities is parallel, window size between two resonant cavities could be passed through and realize coupling, root Window size is determined according to coupling amount size；The functional characteristic of filter includes band logical, band resistance, high pass, low pass and their phases Duplexer, multiplexer and the combiner formed between mutually.

The dielectric constant of the class square dielectric resonance block of the utility model is greater than the dielectric constant of support frame, in cavity When the single side size of wall and the single side size ratio of dielectric resonance block are between 1.03-1.30, higher mode Q value is inverted to basic mode Q Value, three mould medium basic mode Q values promote higher mode Q value and reduce, relative to conventional single-mode and three mould dielectric filter same volumes, with frequency Q value promotes 30% or more under rate, adds cavity according to being combined for this three mode structure and not similar shape type single-chamber, such as three mode structures Single mode, three moulds are combined with TM mould, three moulds with TE single mode, and three modulus amounts are used more in filter, and filter volume is smaller, are inserted It is also smaller to enter loss；The three mould resonance structure of cavity of cavity evagination can generate three mould resonance in X, Y, Z axis direction respectively, When X, Y, Z axis direction generates three mould resonance.

When cavity inner wall side length side length dimension ratio corresponding to dielectric resonance block is the transfer point 1 that 1.0 convert to Q value, When ratio is 1.0, cavity is prefect dielectric Q value, when cavity size increases, is continuously increased on the basis of Q value is in prefect dielectric, The Q value of higher mode is greater than basic mode Q value, and when ratio increases to transfer point 1, the Q value of former higher mode is approximately new basic mode Q Value.

Into after transfer point 1, in the case where keeping fundamental resonance frequencies constant, the Q value of basic mode is greater than the Q of higher mode Value.With the increase of ratio, since the size of medium block and cavity is all increasing, the Q value of basic mode also be will increase, the Q of higher mode Value also will increase simultaneously, and when converting transfer point 2 close to Q value, basic mode Q value reaches highest, convert transfer point 1 and base in basic mode Q value Mould Q value is converted between transfer point 2, and frequency of the frequency of higher mode from basic mode is being converted with the ratio of cavity and dielectric resonance block Point 1 is close when arriving remote when the variation meeting of transfer point 2.

Into after transfer point 2, the Q value of basic mode is less than the Q value of higher mode, with the increase of ratio, dielectric resonance block at this time Size is reducing, and the size of cavity is increasing, and the Q value of basic mode can be continuously increased, when ratio is close to transfer point 3, the Q of basic mode Value and Q value when transfer point 2 are close.

After ratio enters transfer point 3, the Q value of basic mode can be increased with the increase of ratio, and the Q value of higher mode can be with ratio Increase and reduces, dielectric resonance block size reduces with ratio increasing, and the size of cavity continues to increase, close to cavity 3/4 When wavelength dimension, since the size of dielectric resonance block constantly reduces, basic mode Q value is also decreased, the frequency of higher mode with than The increase of value, it is close when remote when from fundamental frequencies.The specific ratio of transfer point and dielectric constant, frequency and the medium of dielectric resonance block Resonance block is single or compound dielectric is related.

Cavity inner wall side length and dielectric resonance block side length, three direction sizes of X, Y, Z axis can be equal, can not also phase Deng.Cavity and class cube dielectric resonance block can form three moulds when X-axis, Y axis, Z axis are equal sized；X-axis, Y-axis, Z axis The dimension difference in three directions can also be slightly unequal, when the cavity and respective media of the one of axis direction of X, Y, Z axis are humorous Shake block single side size and other two directions single side size difference when or cavity and dielectric resonance block it is therein any one When symmetrical single side size and the single side size difference in other two directions, thirdly in mould the frequency of a mould can generate variation with it is another The frequency of outer two moulds is different, and size difference is bigger, and the frequency of one of mould also can be bigger with other two mould difference, when one When the size in a direction is greater than the size in other two directions, frequency can decline on the basis of the original, when the ruler in a direction It is very little be less than other two direction sizes when, frequency can rise on the basis of the original, and Cong Sanmo is gradually turned into bimodulus or list Mould；If three axial dimensions of cavity and resonance block are when all difference is excessive；When three directions of X, Y, Z axis, symmetrical single side size is different When, thirdly the frequency of three moulds all can be different in mould, and in the case where the size dimension in three directions differs biggish situation, basic mode For single mode, in the case where the size dimension in three directions is not much different, frequency difference is also little, although frequency can change, But still three mould states can be kept by tuner.

Coupling between three moulds can use in the three mould resonance structure of cavity of the cavity evagination at least provided with two For changing the coupled structure of the non-parallel arrangement of three mould electromagnetic field orthogonal property of degeneracy in cavity, the coupled structure includes setting The corner cut being placed in by dielectric resonance block seamed edge and/or hole, or chamfering/corner cut including being set to by cavity seamed edge, or including setting Chamfering/the corner cut or non-in cavity including being set to being placed in by the corner cut by dielectric resonance block seamed edge and/or hole and cavity seamed edge Tap line or/piece on parallel plane, the shape of the corner cut are triangular prism shape or rectangular-shape or segment shape, the hole Shape is round, rectangle or polygon.After corner cut or punching, in the case where keep frequency, dielectric resonance block side length increases, Q Value slightly declines.Corner cut or the depth in hole are run through according to the size of required coupling amount or local corner cut/part pore structure, described Corner cut/chamfering/hole size influences the size of coupling amount.Coupled structure is along the perpendicular or parallel direction of corner cut and/or Kong Ping Coupling screw rod is disposed on capable direction, the material of the coupling screw rod is metal, or the material of coupling screw rod is metal and gold Metal surface electro-coppering or electrosilvering, or the material of coupling screw rod is medium, or the material of coupling screw rod is Jie of surface metalation Matter；The shape of coupling screw rod is metallic rod, dielectric rod, metal dish, dielectric disc, metallic rod match metal dish, metallic rod matches dielectric disc, Dielectric rod is with metal dish, dielectric rod with any one in dielectric disc.

Three moulds are concentrated in the resonance frequency of X-direction by the one side or two sides field strength of the X-axis line corresponding to cavity Place install tuning screw additional or tuning disk changes distance or changes capacitor and realizes；The resonance frequency of Y direction can be with Install tuning screw or tuning disk additional by the place that Y-axis line one side corresponding to cavity or two sides field strength are concentrated change away from From or change capacitor and realize；The z axis one side or two corresponding to cavity can be passed through in the resonance frequency of Z-direction The place that face field strength is concentrated installs tuning screw or tuning disk additional to be realized to change distance or change capacitor.

It is different from Single-mode Resonator, bimodulus resonant cavity or the progress of three mode resonant cavities that dielectric resonator Q value converts three mode structures The arbitrary arrangement of form combines, and forms the various sizes of filter of needs；The functional characteristic of filter is including but not limited to band It is logical, with resistance, high pass, low pass and duplexer and multiplexer that they form between each other；Single-mode Resonator, bimodulus resonant cavity, The coupling between any two resonant cavity formed between three mode resonant cavities by composite queue, is parallel according to two resonance structures And between two resonant cavities pass through window size realize coupling.

The beneficial effects of the utility model are: the utility model structure is simple, and it is easy to use, pass through setting three mould of medium Metal cavitg inner wall single side size and dielectric resonance block single side size ratio between 1.01-1.30 so that resonant rod It realizes the counter of special parameter while cooperatively forming three mode structures between cavity to turn over, so as to guarantee resonant rod and cavity Smaller spacing under obtain high q-factor；Further, the utility model discloses a kind of filters of three mould resonance structure of the cavity of evagination Wave device, compared with traditional three mode filters, for the utility model under the premise of same frequency and same volume, Insertion Loss reduces 30% or more. Dielectric resonator frequency composed by the class square dielectric resonance block of the utility model, dielectric support frame frame and cavity cover board turns Three mode structures are changed, it is mutually orthogonal and vertical in cavity x-axis, y-axis and z-axis direction magnetic field, form three non-interfering resonance Mould, and higher mode frequency conversion forms coupling at high Q fundamental frequencies between three magnetic fields, by adjust the power of coupling come Meet the different bandwidth demand of filter.The cavity three of 2 this evaginations is used inside typical case's 1800MHz frequency filter When the filter of mould resonance structure, it is equivalent to the volume of original six single-chambers of cavity, volume is on the basis of original cavity filter On can reduce 40%, insertion loss also can reduce 30% or so, since volume is greatly decreased, and machining period, electroplating surface Product all can be reduced accordingly, although also suitable using dielectric resonance block cost and cavity, the material cost of dielectric resonance block is such as It can decline to a great extent, the cost advantage of this design can become apparent from, when filter cavity is more, it might even be possible to use 3 three mould knots The bring offer of structure, volume and performance can also become apparent from；Further, single-chamber Q value be not greatly reduced in the utility model Under the premise of, by the way that dielectric resonance block and/or cavity are changed to structure on the basis of three mould resonance structures

(at least one end face is arranged), increases the tuning range of tuning screw, while reducing cavity and dielectric resonance Small spacing between block reduces production cost to the susceptibility of resonance frequency, debugging easy to produce.

Detailed description of the invention

Fig. 1 is a kind of structural schematic diagram of the cavity multimode resonance structure of evagination of the utility model；Wherein, cavity is similar Square convex shape, dielectric resonance block are similar square shape, and tuning screw is arranged along different axis.

Fig. 2 is the dielectric resonance block of cavity multimode resonance structure and the showing for dielectric support frame of a kind of evagination of the utility model It is intended to；

Fig. 3 is a kind of preferred embodiment structural schematic diagram of the cavity multimode resonance structure of evagination of the utility model；Wherein, Cavity is similar square convex shape, and dielectric resonance block is similar square shape.Tuning screw is uniformly arranged in one and puts down On face (cover board), facilitate row's chamber layout.

Fig. 4 is the bottom view of Fig. 3；

Fig. 5 is the preferred embodiment of the cavity multimode resonance structure of the utility model another kind evagination；Its hollow cavity is class Like square, dielectric resonance block is that similar square end face increases thin-medium composition.

Fig. 6 is the preferred embodiment of the cavity multimode resonance structure of the utility model another kind evagination.Wherein, cavity is class Like square, dielectric resonance block is end face curved surface evagination.

Fig. 7 is the preferred embodiment of the cavity multimode resonance structure of the utility model another kind evagination.Wherein, cavity is class Like square, after dielectric resonance block center is locally emptied, end face curved surface evagination.

Fig. 8 is the dielectric resonance block evagination enlarged diagram of Fig. 7.

Fig. 9 is a kind of structural schematic diagram of the three mould resonance structure of cavity of evagination.

In figure: 1- cavity；2- dielectric resonance block；3- dielectric support frame；4- nesting medium block；5- slot；6- tuning screw； 7- thin film dielectrics.

Specific embodiment

The cavity multimode resonance structure of evagination described in following embodiment includes:

Cavity is similar square, and dielectric resonance block is evagination, dielectric support frame；

Cavity is evagination, and dielectric resonance block is similar square, dielectric support frame；

Cavity and dielectric resonance block are evagination, dielectric support frame；

Dielectric support frame is made for fit structure, and quantity can be one, or multiple.Shape can be regular shape Shape, such as solid/hollow cylinder, solid/hollow square column etc., or irregular shape；Or it is constituted for multiple columns.

In order to guarantee that multimode and corresponding frequency, structure cannot be unlimited evagination or evagination, condition is had certain limitations. Illustrate as an example below, others similar can obtain.

Eg: single-chamber 26mm × 26mm × 26mm, dielectric support frame be Er9.8, Q × f be 100000, overall diameter 15mm, Interior diameter is 9.7mm；Medium resonant rod is Er43, and Q × f is 43000,

It will be apparent that the longest side length 25.97 of dielectric resonance block and cavity side length 26mm are already close to therefore evagination size is most More 1.5mm.

The utility model is described in further detail in the following with reference to the drawings and specific embodiments, convenient for being well understood The utility model, but they do not constitute the utility model and limit.

As depicted in figs. 1 and 2, a kind of multimode resonance structure of the utility model, including cavity 1, interior be equipped with of cavity 1 are situated between Matter resonance block 2 and dielectric support frame 3, the dielectric resonance block 2 are similar square, and the cavity 1 is similar square and one The concave portion of a or multiple end face evaginations that are not parallel to each other, the cavity 1 is mutual not by the one or more of the inner wall in cavity Parallel end faces part grooving 5 is formed, an end face of the dielectric resonance block 2 by a dielectric support frame 3 respectively with cavity 1 Inner wall connects, and is provided with 6,3 tuning screws 6 of tuning screw on cover board and cavity and is mutually perpendicular to arrange two-by-two；

As shown in Figure 3 and Figure 4, a kind of multimode resonance structure of the utility model includes cavity 1, is equipped with and is situated between in the cavity 1 Matter resonance block 2 and dielectric support frame 3, the dielectric resonance block 2 are similar square, and the cavity 1 is similar square and one The concave portion of a or multiple end face evaginations that are not parallel to each other, the cavity 1 is mutual not by the one or more of the inner wall in cavity Parallel end faces part grooving 5 is formed, an end face of the dielectric resonance block 2 by a dielectric support frame 3 respectively with cavity 1 Inner wall connects, and is provided with 3 tuning screws, 6,3 tuning screws 6 on cover board and is arranged parallel two-by-two；

As shown in figure 5, a kind of multimode resonance structure another kind preferred embodiment of the utility model, including cavity 1, the sky Dielectric resonance block 2 and dielectric support frame 3 are equipped in chamber 1, the cavity 1 is similar square, and the dielectric resonance block 2 is similar Six end faces of square, the dielectric resonance block 2 are pasted with dielectric film 7；

As shown in fig. 6, a kind of multimode resonance structure another kind preferred embodiment of the utility model, including cavity 2, the sky Chamber 2 is interior to be equipped with dielectric resonance block 2 and dielectric support frame 3, and the dielectric resonance block 2 is similar square and one or more is mutual not Parallel end faces are formed by evagination, and the cavity 1 is similar square, and an end face of the dielectric resonance block 2 passes through one Dielectric support frame 3 is connect with 1 inner wall of cavity respectively, and the surface that the cavity 2 is not parallel to each other is set as tuning screw hole；

As shown in fig. 7, a kind of multimode resonance structure another kind preferred embodiment of the utility model, including cavity 2, the sky Chamber 2 is interior to be equipped with dielectric resonance block 2 and dielectric support frame 3, and the dielectric resonance block 2 is similar square and one or more is mutual not Parallel end faces are formed by evagination, and the dielectric resonance block 2 is hollow structure, hollow to be filled partially with nested dielectric resonance block 4, the cavity 1 is similar square, an end face of the dielectric resonance block 2 by a dielectric support frame 3 respectively with sky The connection of 1 inner wall of chamber, the surface that the cavity 2 is not parallel to each other is set as tuning screw hole；

All of above embodiment is only the preferred embodiment of the utility model, does not constitute the restriction to it, especially medium The shape and quantity of support frame.

Orthogonal three seamed edge directions are respectively defined as X-direction, Y in dielectric resonance block 2 as described in embodiment 1 to 5 Direction and Z-direction, three directions are relative position directions, are not uniquely determined, dielectric resonance block 2 tri- directions X, Y, Z with Obverse dielectric support frame is respectively formed X-axis medium resonant rod, Y-axis medium resonant rod and Z axis medium resonant rod, the X-axis Medium resonant rod, Y-axis medium resonant rod and Z axis medium resonant rod and cavity inside cooperatively form three degenerate modes；In X-direction Resonance frequency tuning screw can be installed additional by side wall corresponding to wire chamber and realized to change distance or capacitor；? The resonance frequency of Y direction can by the side wall corresponding to wire chamber install additional tuning screw come change distance or capacitor come It realizes；Z-direction resonance frequency can by the side wall corresponding to wire chamber install additional tuning screw come change distance or Person capacitor is realized.

Radiofrequency signal can generate loss after three mould resonance, and three X, Y, Z-direction degenerate modes can generate heat at work Amount can come into full contact with to be formed thermally conductive with metal cavity wall by dielectric resonance block and multiple dielectric support framves, enable its filter Long-term stable work.

There is coupled structure, specific as shown in Figure 9: dielectric resonance block 2, which is equipped with, is used for coupling between three degenerate mode two Close second plane j2 of the X-direction with the first plane j1 of Y-direction mode of resonance, for coupling Y-direction and Z-direction mode of resonance, For coupling the third plane j3 of X-direction Yu the direction Z mode of resonance, the first plane j1, the second plane j2 and third plane J3 is mutually perpendicular to two-by-two respectively, and the first plane j1 is parallel with the seamed edge arranged along Z-direction, the second plane j2 with arrange in X direction Seamed edge it is parallel, third plane is parallel with the seamed edge arranged along Y-direction.That is in three degenerate modes, the degenerate mode of X-direction and the side Y To degenerate mode between coupling by the X of dielectric resonance block A, Y plane intersects to form corner angle after Z-direction cut-out corner angle The first plane j1 formed；By the Y of dielectric resonance block, Z is flat for coupling between the degenerate mode of X-direction and the degenerate mode of Z-direction Face intersects to form second plane j2 of the corner angle along the x axis after cut-out corner angle and is formed；The degenerate mode and Z-direction of Y-direction Degenerate mode between coupling by the Z of dielectric resonance block, X-plane intersects to form corner angle along the y axis after cut-out corner angle Third plane j3 is formed.The area of coupling surface is bigger, and coupling amount is bigger, otherwise coupling amount is smaller.Dielectric resonance block is formed Three degenerate modes transmission zero can be formed by cross-coupling, if X-direction mode of resonance, Y-direction mode of resonance it Between coupling, and Y-direction mode of resonance couples based on the coupling between Z-direction mode of resonance, then X-direction mode of resonance, the side Z Cross-coupling is coupled as between mode of resonance.

In above scheme, according to practical coupling amount size needs, one or more is can be set in the first plane j1, is arranged more When a first plane j1, it is arranged in parallel between multiple first plane j1；One or more can be set in the second plane j2, if When setting multiple second plane j2, it is arranged in parallel between multiple second plane j2；The third plane j3 can be set one or more It is a, when multiple third coupling surface j3 are set, it is arranged in parallel between multiple third plane j3.

In above scheme, the dielectric resonance block 2 is approximately situated between similar to the equal square of square or side length by side length At least one end face of matter is directly formed by evagination or entire surface or local growth film, or approximately similar square by side length Body or equal at least one end face of square medium of side length are described by entirety after evagination or local growth thin film dielectrics composition The material of dielectric resonance block is ceramics or medium.

Preferably, the dielectric resonance block 2 by side length approximately similar to the equal square medium of square or side length extremely A few end face is directly formed by evagination, or by side length approximately similar to the equal square medium of square or side length at least One end face is ceramics or is situated between by entirety after evagination or local growth thin film dielectrics composition, the material of the dielectric resonance block 2 Matter.

Preferably, can be emptied in whole or in part inside the dielectric resonance block 2, empty part partly or wholly filling or Loop nesting has the nested medium of similar square, which can be solid construction, can also empty in whole or in part, The nested medium of nested medium emptied partially partly or wholly filling or loop nesting and have similar square.

In above scheme, dielectric support frame 3 can design one or more, when multiple dielectric support framves 4 are set, Duo Gejie Matter support frame 3 is respectively arranged between each face of dielectric resonance block 2 and cavity inner wall.It is shown in the utility model embodiment Fig. 9 Be 6 dielectric support framves 3, dielectric resonance block is located at the center of 6 dielectric support framves, 6 face A1-A6 of dielectric resonance block 2 It is connect respectively with 6 dielectric support framves 3, specifically, six dielectric support framves 3 are respectively first medium support frame B1, second Jie Matter support frame B2, third dielectric support frame B3, the 4th dielectric support frame B4, the 5th dielectric support frame B5 and the 6th dielectric support frame B6, the end face A1 of the dielectric resonance block 3 in X direction are connect with first medium support frame B1, other end A2 and second is situated between Matter support frame B2 connects to form X-axis medium resonant rod；An end face A3 and third dielectric support frame of the dielectric resonance block 2 along Y-direction B3 connection, other end A4 connect to form Y-axis medium resonant rod with the 4th dielectric support frame B4；Dielectric resonance block 2 is along the direction Z An end face A5 connect with the 5th dielectric support frame B5, other end A6 is connect with the 6th dielectric support frame B6.

The shape of multiple dielectric support framves 3 is including but not limited to round, oval, rectangular and cavity inner wall and corresponding medium The close-fitting irregular shape in end face.The material of dielectric support frame 4 is including but not limited to plastics, medium, air, dielectric support Frame is solid construction or centre is hollow structure.Between dielectric resonance block 2 and dielectric support frame 3 by the inclusion of but be not limited to glue Viscous, crimping mode connects.Between dielectric support frame and cavity inner wall by the inclusion of but be not limited to gluing, crimp, screw fastening, The mode of welding connects.The shape of cavity is class cube or cube, and the cavity is made of metal material or cavity is by gold Belong to material and metal material inner wall is silver-plated or copper facing constitutes or cavity is made of the nonmetallic materials of plating metal on surface layer.In order to The variation of frequency at different ambient temperatures is reduced, the material mixture ratio of dielectric resonance block can be adjusted partially according to not equality of temperature to carry out The control of frequency deviation, also to ensure that its structural reliability, dielectric support frame uses the elastic material as plastics, make its This structure offsets the influence of heat expansion cold expanding bring under various circumstances.

The shape of the dielectric support frame of the entity structure be solid construction or centre be perforation tubular body structure or Multiple discrete entity column combinations；

The material of the dielectric support frame of the entity structure is plastics, ceramics or medium, the dielectric support of non-physical structure The material of frame is air.

Pass through between dielectric resonance block both ends of the surface in X direction and first medium support frame and second medium support frame Gluing or crimping mode connect；Both ends of the surface and third dielectric support frame and fourth medium branch of the dielectric resonance block along Y-direction It is connected by way of gluing or crimping between support；Both ends of the surface and fiveth dielectric support frame of the dielectric resonance block along Z-direction And the 6th connected by way of gluing or crimping between dielectric support frame.

Further, the total resonant rod and cavity that the resonant rod in tri- directions X, Y, Z is formed form three mode resonant cavity structures； The shape of the cavity is cube or near cubic, and the cavity is made of metal material, or by metal material and metal Material inner wall is silver-plated or copper facing constitutes or cavity is made of the nonmetallic materials of plating metal on surface layer.

Further, the resonant rod in tri- directions X, Y, Z is formed between total resonant rod and cavity inner wall through gluing, pressure It connects, screw fastening or the mode welded connect；The resonant rod in tri- directions X, Y, Z forms total resonant rod and becomes with frequency with temperature The compensation of change；The resonant rod in tri- directions X, Y, Z forms the dielectric support frame of total resonant rod, with the material with certain elasticity Or the shape of elastic construction, so that its structure is offset bring influence of expanding with heat and contract with cold, the elasticity of dielectric support frame under various circumstances Material is plastics, medium, composite material and aluminum oxide etc..

In above scheme, three mould of degeneracy passes through one of the X-axis line corresponding to cavity in the resonance frequency of X-direction Face or two sides install tuning screw additional or tuning disk changes distance or changes capacitor to realize；In the resonance frequency of Y direction Tuning screw or tuning disk can be installed additional by Y-axis line one side corresponding to cavity or two sides to change distance or change Capacitor is realized；The z axis one side or two sides installation tuning corresponding to cavity can be passed through in the resonance frequency of Z-direction Screw rod or tuning disk are realized to change distance or change capacitor；

The tuning screw or tune disk material be metal or tuning screw or tuning disk material be metal and metal Electroplating surface copper or electrosilvering or tuning screw or tune disk material be medium or tuning screw or tuning disk material be The medium of surface metalation；

The shape of the tuning screw is metallic rod, dielectric rod, metal dish, dielectric disc, metallic rod with metal dish, metallic rod With dielectric disc, dielectric rod with metal dish, dielectric rod with any one in dielectric disc.

In above scheme, it is used on the dielectric resonance block and/or at cavity non-corresponding at least provided with two destroy sky The coupled structure of the orthogonal non-parallel arrangement of intracavitary degeneracy multimode electromagnetic field, the coupled structure include being set to dielectric resonance block The corner cut by corner cut and hole and/or the cavity seamed edge by seamed edge, the shape of the corner cut are triangular prism shape or similar pros Body shape or segment shape.In three degenerate modes, the coupling between the degenerate mode of X-direction and the degenerate mode of Y-direction is by medium The X of resonance block, Y plane intersects to form first plane of the corner angle after Z-direction cut-out corner angle and is formed, in the X of cavity, Y It is parallel or be vertically arranged coupling screw rod and realize fine tuning to coupling amount on the rib that level-crossing is formed；The degenerate mode of Y-direction and the side Z To degenerate mode between coupling by the Y of dielectric resonance block, Z plane intersects to form corner angle along the x axis after cut-out corner angle The second plane formed, it is parallel on the rib that Z plane intersects to form or be vertically arranged coupling screw rod and realize to coupling in the Y of cavity The fine tuning of amount；By the Z of dielectric resonance block, X-plane intersected to form for coupling between the degenerate mode of Z-direction and the degenerate mode of X-direction Third plane of the corner angle along the y axis after cut-out corner angle is formed, in the Z of cavity, it is parallel on the rib that X-plane intersects to form or It is vertically arranged fine tuning of the coupling screw rod realization to coupling amount；

The material of the coupling screw rod is metal, or the material of coupling screw rod is metal and metal surface electro-coppering or plating Silver, or the material of coupling screw rod is medium, or the material of coupling screw rod is the medium of surface metalation；

The shape of the coupling screw rod is metallic rod, dielectric rod, metal dish, dielectric disc, metallic rod with metal dish, metallic rod With dielectric disc, dielectric rod with metal dish, dielectric rod with any one in dielectric disc.

Further, radiofrequency signal passes through coupling between the mode of resonance of X-direction, the mode of resonance of Y-direction and Y Coupling between the mode of resonance in direction, the mode of resonance of Z-direction forms radio frequency path, and generates loss and generate heat, leads to The inner wall for crossing six dielectric support framves and cavity, which sufficiently connects, to be formed thermally conductive, and scatter heat.

Further, described to contain small spacing multimode resonance structure and various forms of Single-mode Resonators or bimodulus resonance Chamber, three mode resonant cavities carry out various forms of filters for combining and forming different volumes；

The functional characteristic of the filter includes band logical, with resistance, high pass, low pass and combining that they form between each other Device；

Three mould dielectric resonance cavity configurations and Single-mode Resonator, bimodulus resonant cavity, between three mode resonant cavities because of permutation and combination shape At any two resonant cavity between coupling, it is necessary to be Cai Nengtong in the case that resonant rod in two resonant cavities is parallel It crosses window size between two resonant cavities and realizes coupling.

It should be understood that the above is only the specific embodiments of the utility model, but the protection scope of the utility model It is not limited thereto, anyone skilled in the art can be thought easily in the technical scope disclosed by the utility model The change or replacement arrived, should be covered within the scope of the utility model.What is be not described in detail in this specification is interior Appearance belongs to the prior art well known to professional and technical personnel in the field.

Claims

1. a kind of three mould resonance structure of cavity of evagination, including cavity and cover board, it is provided with dielectric resonance block in the cavity, is situated between Matter support frame, it is characterised in that: the cavity is similar square shape and at least one end face evagination, the dielectric resonance block For similar square shape, the dielectric support frame connect with the dielectric resonance block and the cavity inner wall respectively, is given an account of Matter resonance block and the dielectric support frame constitute three mould medium resonant rods, and the dielectric constant of the dielectric support frame, which is less than, to be given an account of The dielectric constant of matter resonance block；

Ratio K between the unilateral size of the corresponding dielectric resonance block of the unilateral size of the cavity inner wall are as follows: When 1≤K of transfer point≤transfer point 2, the higher mode Q value adjacent with basic mode is converted to the basic mode Q value of three mould resonance structures, conversion Fundamental resonance frequencies afterwards are equal to the fundamental resonance frequencies before conversion, and the basic mode Q value before basic mode Q value > conversion after conversion turns The higher mode Q value adjacent with basic mode before the higher mode Q value < conversion adjacent with basic mode after changing；

It is provided in three mould resonance structures for changing the coupled structure of three mould electromagnetic field orthogonal property of degeneracy in cavity；

It is provided in three mould resonance structures for changing the frequency tuning devices of three mould resonance frequency of degeneracy in cavity.

2. a kind of three mould resonance structure of cavity of evagination, including cavity and cover board, it is provided with dielectric resonance block in the cavity, is situated between Matter support frame, it is characterised in that: the cavity is similar square shape, the dielectric resonance block be similar square shape and At least one end face evagination, the dielectric support frame connect with the dielectric resonance block and the cavity inner wall respectively, are given an account of Matter resonance block and the dielectric support frame constitute three mould medium resonant rods, and the dielectric constant of the dielectric support frame, which is less than, to be given an account of The dielectric constant of matter resonance block；

Ratio K between the unilateral size of the corresponding dielectric resonance block of the unilateral size of the cavity inner wall are as follows: When 1≤K of transfer point≤transfer point 2, the higher mode Q value adjacent with basic mode is converted to the basic mode Q value of the three moulds resonance structure, Fundamental resonance frequencies after conversion are equal to the fundamental resonance frequencies before conversion, the basic mode Q before basic mode Q value > conversion after conversion Value, the higher mode Q value adjacent with basic mode before the higher mode Q value < conversion adjacent with basic mode after conversion；

It is provided in the three moulds resonance structure for changing the coupled structure of three mould electromagnetic field orthogonal property of degeneracy in cavity；

It is provided in the three moulds resonance structure for changing the frequency tuning devices of three mould resonance frequency of degeneracy in cavity.

3. a kind of three mould resonance structure of cavity of evagination, including cavity and cover board, it is provided with dielectric resonance block in the cavity, is situated between Matter support frame, it is characterised in that: the cavity is similar square shape and at least one end face evagination, the dielectric resonance block For similar square shape and at least one end face evagination, the dielectric support frame respectively with the dielectric resonance block and the sky Cavity wall connection, the dielectric resonance block and the dielectric support frame constitute three mould medium resonant rods, the dielectric support frame Dielectric constant is less than the dielectric constant of the dielectric resonance block；

4. a kind of three mould resonance structure of cavity of evagination described according to claim 1 or 2 or 3, it is characterised in that: given an account of Matter resonance block is solid construction or hollow structure；The hollow space of the dielectric resonance block of hollow structure is filled with air or nested Jie The volume of matter resonance block, the nesting dielectric resonance block is less than or equal to the volume of the hollow chamber.

5. a kind of three mould resonance structure of cavity of evagination according to claim 4, it is characterised in that: the nesting medium Resonance block is similar square shape and at least one end face evagination.

6. a kind of three mould resonance structure of cavity of evagination according to claim 5, it is characterised in that: the nesting medium At least one end face of resonance block is provided with thin film dielectrics.

7. a kind of three mould resonance structure of cavity of evagination described according to claim 1 or 2 or 3, it is characterised in that: the sky At least one end face of chamber or/and at least one end face of the dielectric resonance block are provided with thin film dielectrics.

8. a kind of three mould resonance structure of cavity of evagination described according to claim 1 or 2 or 3, it is characterised in that: described turn Changing a little 1 value and the value of the transfer point 2 can be with the fundamental resonance frequencies of the dielectric resonance block, the dielectric resonance block Dielectric constant, support frame as described above dielectric constant difference and generate variation.

9. a kind of three mould resonance structure of cavity of evagination described according to claim 1 or 2 or 3, it is characterised in that: keep turning When the fundamental resonance frequencies of the dielectric resonance block after changing are constant, the Q value of the three moulds resonance structure and the value of the K and The dielectric constant of the dielectric resonance block and with institute in the size related according to claim 1 or 2 or 3 of the dielectric resonance block The three mould resonance structure of cavity for a kind of evagination stated, it is characterised in that: the basic mode of the dielectric resonance block after keeping conversion is humorous When vibration frequency is constant, the dielectric constant of the Q value of the three moulds resonance structure and the value of the K and the dielectric resonance block and It is related with the size of the dielectric resonance block.

10. a kind of three mould resonance structure of cavity of evagination described according to claim 1 or 2 or 3, it is characterised in that: when K's Value from 1.0 increase to maximum when, the value of K has Q value transfer point at three in variation range, and each Q value transfer point makes it Basic mode Q value and its higher mode Q value adjacent with basic mode change；When basic mode Q value is lower than the higher mode Q value adjacent with basic mode When, the higher mode Q value adjacent with basic mode is converted into basic mode Q value, and basic mode Q value is higher than before not converting；When basic mode Q value is higher than and basic mode When adjacent higher mode Q value, the higher mode Q value adjacent with basic mode is converted into basic mode Q value, and basic mode Q value is lower than before not converting.

11. a kind of three mould resonance structure of cavity of evagination according to claim 10, it is characterised in that: in the value of K Starting point, in 4 regions that Q value transfer point is formed at terminating point and three, basic mode Q value and the higher mode Q value adjacent with basic mode It is gradually changed with cavity size and the variation of medium resonant rod block size, the demand that different zones are applied to filter respectively has not Together.

12. a kind of three mould resonance structure of cavity of evagination described according to claim 1 or 2 or 3, it is characterised in that:

The cavity and the dielectric resonance block form three mould of degeneracy when X-axis, Y-axis, Z axis are equal sized, three mould of degeneracy and its Its single-chamber coupling composition pass filter；

When the cavity and dimension difference of the dielectric resonance block in three X-axis, Y-axis, Z axis directions are slightly unequal, formed Three orthogonal mould resonance of class, if three orthogonal moulds of class and other chambers remain to be coupled into pass filter, size can be with if class be just Three moulds and other chambers handed over cannot be coupled into pass filter, then size is not all right；

The cavity and the dielectric resonance block cannot be formed when the size difference in three X-axis, Y-axis, Z axis directions is larger Three mould of degeneracy or orthogonal three moulds of class, but three modes of different frequency are formed, so that passband filter cannot be coupled into other chambers Wave device, then size is not all right.

13. a kind of three mould resonance structure of cavity of evagination according to claim 12, it is characterised in that:

The three mould resonance structure of cavity of the evagination forms three mould of degeneracy of X-axis, Y-axis and Z-direction, and three mould of degeneracy is in X The resonance frequency of axis direction installs tuning spiral shell additional by the place that the one side or two sides field strength of the X-axis line corresponding to cavity are concentrated Bar or tuning disk change distance or change capacitor to realize；Pass through the Y-axis corresponding to cavity in the resonance frequency of Y direction The place that line one side or two sides field strength are concentrated installs tuning screw or tuning disk additional to be realized to change distance or change capacitor； Tuning is installed additional by the place of z axis one side or two sides field strength concentration corresponding to cavity in the resonance frequency of Z-direction Screw rod or tuning disk are realized to change distance or change capacitor.

14. a kind of three mould resonance structure of cavity of evagination according to claim 12, it is characterised in that:

The three mould resonance structure of cavity of the evagination forms three mould of degeneracy of X-axis, Y-axis and Z-direction, and three mould of degeneracy passes through Change dielectric constant to adjust frequency；The surface of the dielectric resonance block, the inner wall of the cavity, the cover board inner wall or The dielectric constant film of different shape and thickness is posted in the bottom of tuning screw described in person, and thin-film material is ceramic dielectric and ferroelectricity Material；

The tuning screw or tune disk material be metal or tuning screw or tuning disk material be metal and metal surface Electro-coppering or electrosilvering or tuning screw or tune disk material be medium or tuning screw or tuning disk material be surface The medium of metallization；

The shape of the tuning screw is metallic rod, dielectric rod, metal dish, dielectric disc, metallic rod matches metal dish, metallic rod matches and is situated between Matter disk, dielectric rod are with metal dish, dielectric rod with any one in dielectric disc.

15. a kind of three mould resonance structure of cavity of evagination described according to claim 1 or 2 or 3, it is characterised in that: described At least provided with two for changing three mould electromagnetic field orthogonal property of degeneracy in cavity in the three mould resonance structure of cavity of evagination The coupled structure of non-parallel arrangement,

The coupled structure includes the corner cut/chamfering/slot being set at dielectric resonance block seamed edge；

Or chamfering/corner cut including being set at cavity interior angle；

Or including being set to corner cut/chamfering/slot by dielectric resonance block seamed edge and chamfering/corner cut by cavity seamed edge；

Or the tap line including being set in cavity in non-parallel planes or/piece；

The shape of the corner cut is triangular prism shape or rectangular-shape or segment shape；After corner cut, in the case where keep frequency, medium Resonance block side length increases, and Q value slightly declines；

The corner cut or the depth in hole are run through according to the size of required coupling amount or local corner cut/part pore structure；

The corner cut/chamfering/hole size influences the size of coupling amount；

The coupled structure is disposed with coupling screw rod along the perpendicular or parallel direction of corner cut, and the material of the coupling screw rod is gold Belong to, or the material of coupling screw rod is metal and metal surface electro-coppering or electrosilvering, or the material of coupling screw rod is medium or coupling The material for closing screw rod is the medium of surface metalation；

The shape of the coupling screw rod is metallic rod, dielectric rod, metal dish, dielectric disc, metallic rod matches metal dish, metallic rod matches and is situated between Matter disk, dielectric rod are with metal dish, dielectric rod with any one in dielectric disc.

16. a kind of three mould resonance structure of cavity of evagination described according to claim 1 or 2 or 3, it is characterised in that: described At least provided with two for changing three mould electromagnetic field orthogonal property of degeneracy in cavity in the three mould resonance structure of cavity of evagination The coupled structure of non-parallel arrangement,

The coupled structure includes the hole/slot being set on the end face of dielectric resonance block, the center line of hole or slot with perpendicular to Jie The seamed edge for the end face for offering hole or slot on matter resonance block is parallel；

Or chamfering/corner cut including being set at cavity interior angle；

Or chamfering/corner cut by the hole/slot and cavity seamed edge on the end face including being set to dielectric resonance block；

The depth in hole is run through according to the size of required coupling amount or local pore structure；

The size in hole influences the size of coupling amount；

Hole/slot shape is round, rectangle or polygon, after opening up hole/slot, in the case where keep frequency, and dielectric resonance block Side length increases, and Q value slightly declines；

The coupled structure is disposed with coupling screw rod along the parallel direction in hole, and the material of the coupling screw rod is metal or coupling The material for closing screw rod is metal and metal surface electro-coppering or electrosilvering, or the material of coupling screw rod is medium, or coupling screw rod Material be surface metalation medium；

17. a kind of three mould resonance structure of cavity of evagination described according to claim 1 or 2 or 3, it is characterised in that: described The shape of cavity is similar square, is coupled between three moulds to realize, in the premise for not changing the dielectric resonance block size Under, be machined on two faces of the cavity arbitrary neighborhood for realizing the trimming coupled between three moulds, trimming size with it is required Coupling amount size is related；Coupling in three mode couplings between two moulds realizes that remaining coupling passes through institute by the cavity trimming Two adjacent side corner cuts of cavity are stated to realize, when cavity adjacent edge corner cut is unable to broken wall, and chamfer need to be complete with cavity Sealing；Perhaps the electrosilvering cavity material is metal or nonmetallic for the cavity surface electro-coppering；When the cavity is non- When metal material, the inner wall of the cavity must electroplating of conductive material.

18. a kind of three mould resonance structure of cavity of evagination described according to claim 1 or 2 or 3, it is characterised in that: described When cavity is similar square, the dielectric resonance block is installed on any one of the cavity together with the dielectric support frame Axial, the center of the dielectric resonance block is overlapped or approaches with the center of the cavity.

19. a kind of three mould resonance structure of cavity of evagination described according to claim 1 or 2 or 3, it is characterised in that: described The dielectric constant of dielectric support frame is similar to dielectric constant of air, and dielectric support frame is on three mould resonance frequencies without influence；The medium Support frame and any single-side support of the dielectric resonance block or six face supports or two different faces, three faces, four faces And five faces carry out different combined supports, the dielectric support frame in each face is single or multiple dielectric support framves, different sides It can according to need the one or more support frames of installation.

20. a kind of three mould resonance structure of cavity of evagination described according to claim 1 or 2 or 3, it is characterised in that: described The dielectric constant of dielectric support frame is greater than the dielectric constant that dielectric constant of air is less than the dielectric resonance block, in order to keep original Three mould frequencies, the size that the dielectric support frame corresponds to the dielectric resonance block axial direction are slightly reduced；The dielectric support frame With any single-side support of the dielectric resonance block or six face supports or two different faces, three faces, four faces and five Face carries out different combined supports, and the face for not installing support frame is air, and air surface and dielectric support frame can in any combination, often The dielectric support frame in a face is single or multiple dielectric support framves, or answering for multilayer differing dielectric constant dielectric material composition Conjunction dielectric constant support frame, single layer and multilayered medium material support frame carry out any combination with similar square medium block, different Face can according to need installation one multiple support frames can also be installed, the face of support frame is installed, in order to keep three mould frequencies and Q value, the corresponding size in dielectric resonance block axial direction of dielectric support frame need to be slightly reduced.

21. a kind of three mould resonance structure of cavity of evagination according to claim 20, it is characterised in that:

Single-side support group is combined into any one face of Supporting Media resonance block；

The support combinations in two faces include parallel face, such as top and bottom, front-back, left and right face；It also include nonparallel face, as above Face and front, above with below, above with the left side, above and the right side；

The support combinations in three faces include: the face and a nonparallel face in three mutually perpendicular faces or two planes；

The support combinations in four faces include: two pairs of parallel faces or a pair of parallel face and other two not parallel face；

The support combinations in five faces include: except the anterior/posterior/left side/right side/above/below any one side support construction；

The support combinations in six faces include: anterior/posterior/left side/all faces of the right side/above/below support construction.

22. a kind of three mould resonance structure of cavity of evagination according to claim 21, it is characterised in that: single-side support group The bottom surface being combined into the vertical direction of Supporting Media resonance block or weight-bearing surface.

23. a kind of three mould resonance structure of cavity of evagination described according to claim 1 or 2 or 3, it is characterised in that:

The surface area of the dielectric support frame is less than or equal to the surface area of the dielectric resonance block；The dielectric support frame is circle Cylinder, square and cuboid；

The dielectric support frame is solid construction or hollow structure, and the dielectric support frame of hollow structure is single hole or porous, hole Shape be round, rectangular, polygon and arc；

The material of the dielectric support frame includes air, plastics, ceramics, medium.

24. a kind of three mould resonance structure of cavity of evagination described according to claim 1 or 2 or 3, it is characterised in that: described Dielectric support frame is attached with the dielectric resonance block using crimping, Nian Jie or burn-back mode；The dielectric support frame and institute Cavity inner wall is stated to be attached using bonding, crimping, welding, burn-back, screw fixation method.

25. a kind of three mould resonance structure of cavity of evagination described according to claim 1 or 2 or 3, it is characterised in that: radio frequency The radio frequency path that signal is formed in the coupling of three mould X, Y and Z-direction can bring loss and generate heat, the dielectric resonance Block makes its heat imported into cavity and radiates by sufficiently connecting with the dielectric support frame with the cavity inner wall.

26. a kind of three mould resonance structure of cavity of evagination described according to claim 1 or 2 or 3, it is characterised in that: described Dielectric resonance block controls its frequency-temperature coefficient by adjusting the proportion of dielectric material, according to filter in different temperatures situation Under frequency shift (FS) change to compensate.

27. a kind of three mould resonance structure of cavity of evagination according to claim 26, it is characterised in that: the medium is humorous The block that shakes is single dielectric constant or compound dielectric, and the dielectric resonance block of compound dielectric is normal by least two different dielectrics Several combinations of materials form, and the material of differing dielectric constant can carry out upper and lower, left and right, asymmetric, nested mode combination；Medium When resonance block is nested with the material of differing dielectric constant, can nested one layer or nested multilayer, Jie of compound dielectric Matter resonance block needs to meet the changing rule of aforementioned Q value transfer point；When to progress trimming coupling between three mould of dielectric resonance block When conjunction, in order to keep required frequency, adjacent two faces of trimming need to adjust corresponding side length in parallel；The dielectric resonance block is ceramics Or dielectric material, dielectric resonance block surface can increase the media sheet of different-thickness and differing dielectric constant.

28. a kind of filter of the three mould resonance structure of cavity containing evagination, including cavity, cover board, input/output structure, special Sign is: at least provided with an a kind of evagination as described in claim 1-3 any one claim in the cavity Three mould resonance structure of cavity；

Three mould resonance structure of cavity and singlemode resonance structure, bimodulus resonance structure, the three mould resonance structures of the evagination carry out not It is combined with form, the filter of the different volumes of formation；

The three mould resonance structure of cavity and Single-mode Resonator of evagination, bimodulus resonant cavity, between three mode resonant cavities because of permutation and combination shape At any two resonant cavity between coupling, it is necessary to be Cai Nengtong in the case that resonant rod in two resonant cavities is parallel It crosses window size between two resonant cavities and realizes coupling, window size is determined according to coupling amount size；

The functional characteristic of the filter include band logical, with resistance, high pass, low pass and duplexer that they are formed between each other, Multiplexer and combiner.