CN206864582U - A kind of dielectric waveguide filter with cross coupling structure - Google Patents
A kind of dielectric waveguide filter with cross coupling structure Download PDFInfo
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- CN206864582U CN206864582U CN201720441798.2U CN201720441798U CN206864582U CN 206864582 U CN206864582 U CN 206864582U CN 201720441798 U CN201720441798 U CN 201720441798U CN 206864582 U CN206864582 U CN 206864582U
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Abstract
Radio-frequency devices field is the utility model is related to, discloses a kind of dielectric waveguide filter with cross coupling structure.The dielectric waveguide filter, bridging is coupled by subaisle and connects two Medium Wave Guide monomers on waveguide main channel and non-adjacent, and then the cross coupling structure for having concatemer to cascade is formed on the waveguide main channel, thus can be according to cross-couplings theory or radio frequency simulation, the opposing coupler polarity that bridge is coupled by number and master/slave passage that bridge is coupled to subaisle configures, obtain various combination, filter freguency response passband is high-end and/or low side forms the trap wave point of notch shape, without designing zero extra cavity configuration, the trap wave point that can be needed only need to be combined by simple cross-couplings, realize the high rejection characteristic of dielectric waveguide filter, beneficial to the electric property displaying of product and Miniaturization Design.
Description
Technical field
Radio-frequency devices field is the utility model is related to, in particular it relates to a kind of Medium Wave Guide with cross coupling structure
Wave filter.
Background technology
Wave filter is a kind of frequency-selecting device, can make the frequency content of special frequency channel in signal by and greatly decaying
Other frequency contents.Waveguide filter is one kind of Frequent Filters in communication system, and traditional waveguide filter is wire chamber
Body structure, centre are air, and metal material is edge and plays a part of electromagnetic shielding and structural support.Using such a mode
Wave filter has higher quality factor q value, but volume and weight are larger, is unfavorable for installing and transports.With communication system
Development, it is desirable to which wave filter has the characteristics that filter with low insertion loss, high suppression, bears big power, low cost and miniaturization.It is therefore normal with high dielectric
Number dielectric material substitutes air part, plays conduction electromagnetic wave and structural support effect, while play electromagnetism by silver on medium block surface
Shielding action, it can so be substantially reduced the volume and cost of wave filter.
It is usually to be situated between in the prior art for dielectric waveguide filter to improve the frequency selectivity of wave filter
Outside matter waveguide filter, one resonant frequency of increase passes through the medium in the medium single-chamber of high side of filter passband or low side
Single-chamber couples with input and output connector, can absorb signal of the wave filter around the medium single-chamber resonant frequency, and obtains
Filter freguency response passband is high-end or the waveform of low side formation trap, this structure are commonly referred to as zero cavity configuration.But
The trap quantity to be realized of such a zero cavity configuration must be consistent with the number of increased medium single-chamber, so can not only increase design
The difficulty of dielectric waveguide filter, while can also increase the volume of dielectric waveguide filter, so as to be unfavorable for production and product
Miniaturization.
Utility model content
For the foregoing dielectric waveguide filter with zero cavity configuration, because design difficulty is larger, it is unfavorable for producing and produces
The problem of product minimize, the utility model provides a kind of dielectric waveguide filter with cross coupling structure.
The technical solution adopted in the utility model, there is provided a kind of dielectric waveguide filter with cross coupling structure,
Including Medium Wave Guide monomer, first wave guide joint and second waveguide joint；The number of the Medium Wave Guide monomer is multiple, and is led to
Cross and coupling bridge in main channel is connected between two Medium Wave Guide monomers, it is main logical that all Medium Wave Guide monomers are sequentially connected in series into waveguide
Road, the first wave guide joint and the second waveguide joint connect the Medium Wave Guide positioned at waveguide main channel both ends respectively
Monomer；Provided with connection on the waveguide main channel and the subaisles of two non-adjacent Medium Wave Guide monomers couples bridge, so as to
The cross coupling structure for having concatemer to cascade is formed on the waveguide main channel.
Optimization, when on the waveguide main channel form have tetrad cascade cross coupling structure when, then this four
In the cross coupling structure of disjunctor cascade, subaisle in the outer part is set to couple bridge as coupling polarity and the coupling on waveguide main channel
Close opposite polarity coupling bridge structure.
Optimization, in the cross coupling structure of tetrad cascade, if only existing subaisle coupling bridge in the outer part, set
It is that coupling polarity couples bridge structure with the coupling polarity identical on waveguide main channel to put subaisle coupling bridge, during setting is in
Between the main channel coupling bridge of position be the coupling polarity coupling bridge structure opposite with the coupling polarity on waveguide main channel.
Further optimize, for the coupling polarity coupling bridge structure opposite with the coupling polarity on waveguide main channel,
The upper surface central area of the coupling bridge is provided with first blind hole of the depth between 36~55mm.
Further optimize, bridge structure is coupled with the coupling polarity identical on waveguide main channel for coupling polarity,
The upper surface central area not perforate of the coupling bridge is provided with the second blind hole that depth is less than 31mm.
Optimization, it is provided with metal screen layer in the outer surface of the Medium Wave Guide monomer.Further optimize, the metal
Screen layer is by silver layer.
Optimization, the Medium Wave Guide monomer is cylindrical structure, regular polygon cylinder structure or rectangular parallelepiped structure.
Optimization, the Medium Wave Guide monomer is the solid made of ceramic medium material.
Optimization, the waveguide main channel is " V " font passage, " U " font passage or "Ji" type passage.
To sum up, using a kind of dielectric waveguide filter with cross coupling structure provided by the utility model, have
Following beneficial effect：(1) dielectric waveguide filter, connect by subaisle coupling bridging on waveguide main channel and non-adjacent
Two Medium Wave Guide monomers, and then on the waveguide main channel form have concatemer cascade cross coupling structure, thus may be used
According to cross-couplings theory or radio frequency simulation, pass through the number that bridge is coupled to subaisle and master/slave passage couples the relative coupling of bridge
Polarity is closed to be configured, obtain various combination, filter freguency response passband is high-end and/or low side forms notch shape
Trap wave point, without designing zero extra cavity configuration, what only need to can be needed by the combination of simple cross-couplings falls into
Wave point, the high rejection characteristic of dielectric waveguide filter is realized, beneficial to the electric property displaying of product and Miniaturization Design；(2) institute
State dielectric waveguide filter also have the characteristics that it is simple in construction, be readily produced low with manufacturing cost, be easy to actual promotion and application.
Brief description of the drawings
, below will be to embodiment in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art
Or the required accompanying drawing used is briefly described in description of the prior art, it should be apparent that, drawings in the following description are only
It is some embodiments of the utility model, for those of ordinary skill in the art, is not paying the premise of creative work
Under, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the knot of the dielectric waveguide filter of the cross coupling structure provided by the utility model that there are three disjunctors to cascade
Structure schematic diagram.
Fig. 2 is the dielectric waveguide filter of the two kinds provided by the utility model cross coupling structures with the cascade of three disjunctors
Frequency response analogous diagram.
Fig. 3 is that the blind hole depth provided by the utility model on coupling bridge is illustrated with coupling amount and the relation of coupling polarity
Figure.
Fig. 4 is the relation schematic diagram of blind hole diameter and coupling amount provided by the utility model on coupling bridge.
Fig. 5 is the Medium Wave Guide filtering of the cross coupling structure provided by the utility model with the cascade of the first tetrad
The structural representation of device.
Fig. 6 is the Medium Wave Guide of the four kinds provided by the utility model cross coupling structures with the cascade of the first tetrad
The frequency response analogous diagram of wave filter.
Fig. 7 is the Medium Wave Guide filtering of the cross coupling structure with second of tetrad cascade provided by the utility model
The structural representation of device.
Fig. 8 is the Medium Wave Guide filtering of the cross coupling structure provided by the utility model with the cascade of the third tetrad
The structural representation of device.
Fig. 9 is the knot of the dielectric waveguide filter of the cross coupling structure provided by the utility model that there are five disjunctors to cascade
Structure schematic diagram.
Figure 10 is the Medium Wave Guide filtering of the four kinds provided by the utility model cross coupling structures with the cascade of five disjunctors
The frequency response analogous diagram of device.
Figure 11 is the dielectric waveguide filter of the cross coupling structure provided by the utility model that there are six disjunctors to cascade
Structural representation.
In above-mentioned accompanying drawing：1st, Medium Wave Guide monomer 201, first wave guide joint 202, second waveguide joint 3, main channel
Couple bridge 4, subaisle coupling bridge 501, the first blind hole 502, the second blind hole.
Embodiment
Hereinafter with reference to accompanying drawing, being described in detail by way of example provided by the utility model has cross-couplings knot
The dielectric waveguide filter of structure.Herein it should be noted that being used to help understand this reality for the explanation of these way of example
With new, but do not form to restriction of the present utility model.
The terms "and/or", only a kind of incidence relation for describing affiliated partner, expression may have three kinds of passes
System, for example, A and/or B, can be represented：Individualism A, individualism B, while tri- kinds of situations of A and B, the terms be present
"/and " it is another affiliated partner relation of description, expression may have two kinds of relations, for example, A/ and B, can be represented：Individually deposit
In A, two kinds of situations of individualism A and B, in addition, character "/" herein, it is that a kind of "or" is closed to typically represent forward-backward correlation object
System.
Embodiment one
Fig. 1 shows the dielectric waveguide filter of the cross coupling structure provided by the utility model that there are three disjunctors to cascade
Structural representation, Fig. 2 show two kinds provided by the utility model have three disjunctors cascade cross coupling structure medium
The frequency response analogous diagram of waveguide filter, Fig. 3 show the blind hole depth provided by the utility model on coupling bridge with coupling
The relation schematic diagram of amount and coupling polarity, Fig. 4 show blind hole diameter and coupling amount provided by the utility model on coupling bridge
Relation schematic diagram.
The dielectric waveguide filter for the cross coupling structure that there are three disjunctors to cascade that the present embodiment provides is one
Five rank wave filters, including five Medium Wave Guide monomers 1, first wave guide joint 201 and second waveguide joint 202；Five are given an account of
Matter waveguide monomer 1 couples bridge 3 by connecting main channel between two Medium Wave Guide monomers, is sequentially connected in series into waveguide main channel, institute
State first wave guide joint 201 and the second waveguide joint 202 and connect the medium ripple for being located at waveguide main channel both ends respectively
Lead monomer 1；Simultaneously provided with a connection on the waveguide main channel and two non-adjacent Medium Wave Guide monomers subaisle
Bridge 4 is coupled, forms the cross coupling structure of a three disjunctors cascade.
As shown in figure 1, the dotted line in figure is the trajectory of waveguide main channel, and include the friendship of a three disjunctors cascade
Pitch coupled structure：Second Medium Wave Guide monomer i.e. on waveguide main channel is (i.e. along first wave guide joint 201 to second waveguide
The direction of joint 202 along number second Medium Wave Guide monomer) with the 4th Medium Wave Guide monomer (i.e. along first wave guide joint 201
The 4th Medium Wave Guide monomer to the direction of second waveguide joint 202 along number) it is connected by subaisle coupling bridge 4, realize
Second Medium Wave Guide monomer (connects across the 3rd Medium Wave Guide monomer along first wave guide joint 201 to second waveguide
Three Medium Wave Guide monomer of first 202 direction along number) coupled with the 4th Medium Wave Guide monomer, thus it can produce
One trap wave point.So in the design process of wave filter, it can be controlled by designing the coupling amount size of subaisle coupling bridge 4
The distance of trap wave point Distance Filter passband processed；The positive and negative of coupling polarity that bridge 4 is coupled by designing the subaisle (typically gives tacit consent to ripple
It is positive coupling to lead the coupling polarity on main channel, and the coupling polarity opposite with the coupling polarity on waveguide main channel is negative coupling)
It is outer high band or the outer low-frequency range in filter pass band to control trap wave point.
As shown in Figure 2 two kinds have the frequency response of the dielectric waveguide filter of the cross coupling structure of three disjunctors cascade
Analogous diagram：(a) in Fig. 2 show the Medium Wave Guide filtering when the coupling polarity of subaisle coupling bridge 4 is bears coupling
The frequency response analogous diagram of device, i.e., in the presence of a trap wave point LA in filter pass band BLP outer low-frequency range；(b) institute in Fig. 2
The frequency response analogous diagram for the dielectric waveguide filter being shown as when the coupling polarity of subaisle coupling bridge 4 is just couples,
A trap wave point HA on filter pass band BLP outer high band be present.Therefore without zero extra cavity configuration of design, only need
The trap wave point that can be needed by the combination of simple cross-couplings, realize the high rejection characteristic of dielectric waveguide filter, profit
In the electric property displaying of product and Miniaturization Design.
Specifically, in order that the coupling polarity of subaisle coupling bridge 4 can be, but not limited in the pair to bear coupling
The upper surface central area of passage coupling bridge 4 is provided with first blind hole 501 of the depth between 36~55mm.It is as shown in figure 3, blind
The depth in hole can influence to couple the coupling polarity of bridge：When the depth of blind hole is shallower (less than 33mm), its coupling polarity is just
Coupling, but when blind hole depth down to a certain extent when (more than 35mm), its coupling polarity can sport negative coupling, so
Afterwards with the further intensification of blind hole depth, the coupled characteristic of its negative coupling can be after a peak value be crossed gradually to positive coupling side
To differentiation.And as shown in figure 4, the coupling amount of blind hole increases with enlarged diameter.From there through the depth for adjusting blind hole and directly
Footpath size, it can obtain satisfactory trap wave point.
Optimization, it is provided with metal screen layer in the outer surface of the Medium Wave Guide monomer 1.Set the mode of the Rotating fields can
With but be not limited to gild technique or craft of gilding etc..Consider that the conductive effect of argent is more preferable than metallic gold, therefore in this reality
Apply in example, the metal screen layer is (to be used by silver layer and gilded technique by upper metallic silver layer).
Optimization, the Medium Wave Guide monomer 1 can be, but not limited to as cylindrical structure, regular polygon cylinder structure or length
The column structures such as cube structure.As shown in figure 1, as an example, in the present embodiment, the medium monomer 1 is cuboid knot
Structure.
Optimization, the Medium Wave Guide monomer 1 is the solid made of ceramic medium material.Ceramic medium material is one
Kind hard dielectric material, has very high dielectric constant and relatively low dielectric loss, while can provide effective structural support.
The radio-frequency devices such as the dielectric filter designed by this dielectric material have miniaturization, high stability, low-loss, in light weight
A variety of advantages such as low with cost, it is well positioned to meet the miniaturization of following wave filter and high performance requirement.In addition, it will be given an account of
Matter monomer 1 is designed as solid structure, can conveniently fabricate.
Optimization, the waveguide main channel is the track shapes such as " V " font passage, " U " font passage or "Ji" type passage
The passage of shape.As shown in figure 1, as an example, in the present embodiment, the main channel is " V " font passage.
To sum up, the dielectric waveguide filter for the cross coupling structure with the cascade of three disjunctors that the present embodiment is provided, tool
Have the advantages that：(1) dielectric waveguide filter, the cross coupling structure cascaded by forming three disjunctors, and lead to
Cross to subaisle coupling bridge opposing coupler polarity configure, can respectively obtain filter freguency response passband it is high-end or
Low side forms the trap wave point of notch shape, without designing zero extra cavity configuration, only need to pass through simple cross-couplings group
The trap wave point that can be needed is closed, realizes the high rejection characteristic of dielectric waveguide filter, is shown beneficial to the electric property of product
And Miniaturization Design；(2) dielectric waveguide filter also have the characteristics that it is simple in construction, be readily produced it is low with manufacturing cost,
It is easy to actual promotion and application.
Embodiment two
Fig. 5 shows the Medium Wave Guide of the cross coupling structure provided by the utility model with the cascade of the first tetrad
The structural representation of wave filter, Fig. 6 show the four kinds provided by the utility model intersection couplings with the cascade of the first tetrad
Close the frequency response analogous diagram of the dielectric waveguide filter of structure.
The dielectric waveguide filter for the cross coupling structure with the cascade of the first tetrad that the present embodiment provides
For a six rank wave filters, including six Medium Wave Guide monomers 1, first wave guide joint 201 and second waveguide joint 202；Six
The Medium Wave Guide monomer 1 couples bridge 3 by connecting main channel between two Medium Wave Guide monomers, and it is main logical to be sequentially connected in series into waveguide
Road, the first wave guide joint 201 and the second waveguide joint 202 connect Jie positioned at waveguide main channel both ends respectively
Matter waveguide monomer 1；Simultaneously provided with two connections on the waveguide main channel and two non-adjacent Medium Wave Guide monomers pair
Passage couples bridge 4, forms the cross coupling structure of a tetrad cascade.
As shown in figure 5, the dotted line in figure is the trajectory of waveguide main channel, the Medium Wave Guide monomer 1 uses cylinder
Body structure, the main channel are " U " font passage, and include the cross coupling structure of a tetrad cascade：I.e. in waveguide
On main channel second Medium Wave Guide monomer (i.e. along first wave guide joint 201 to the direction of second waveguide joint 202 along number the
Two Medium Wave Guide monomers) respectively with the 4th Medium Wave Guide monomer (i.e. along first wave guide joint 201 to second waveguide joint
Four Medium Wave Guide monomer of 202 directions along number) and the 5th Medium Wave Guide monomer (i.e. along first wave guide joint 201 to the
Five Medium Wave Guide monomer of the direction of two waveguide connector 202 along number) it is connected by subaisle coupling bridge 4, described in realization
Second Medium Wave Guide monomer is across the 3rd Medium Wave Guide monomer (i.e. along first wave guide joint 201 to second waveguide joint 202
Three Medium Wave Guide monomer of the direction along number) coupled with the 4th Medium Wave Guide monomer, and realize described the
Two Medium Wave Guide monomers cross over the 3rd Medium Wave Guide monomer and the 4th Medium Wave Guide monomer and the 5th medium ripple
Lead monomer to couple, thus can produce two trap wave points.So in the design process of wave filter, it can equally pass through design two
The coupling amount size of subaisle coupling bridge 4 corresponds to the distance of trap wave point Distance Filter passband to control respectively；It is secondary by design two
The coupling polarity of passage coupling bridge 4 it is positive and negative come to control corresponding trap wave point respectively be outer high band or the outer low frequency in filter pass band
Section.
As shown in Figure 6 four kinds have the frequency of the dielectric waveguide filter of the cross coupling structure of the first tetrad cascade
Rate responds analogous diagram：The subaisle coupling bridge 4 that (a) in Fig. 6 show ought be in the outer part (connects second Medium Wave Guide monomer
Couple bridge with the subaisle of the 5th Medium Wave Guide monomer) coupling polarity subaisle for positive coupling and in the inner part couple bridge 4
The coupling polarity of (connect second Medium Wave Guide monomer and couple bridge with the subaisle of the 4th Medium Wave Guide monomer) is also for just
The frequency response analogous diagram of dielectric waveguide filter during coupling, i.e., in the presence of two on filter pass band BLP outer high band
Trap wave point HA1 and HA2；The coupling polarity that (b) in Fig. 6 show subaisle coupling bridge 4 that ought be in the outer part is just to couple and lean on
The frequency response analogous diagram of dielectric waveguide filter when the coupling polarity of the subaisle coupling bridge 4 of inner side is bears coupling, that is, deposit
Trap wave point LA1 and LA2 in two outer low-frequency ranges in filter pass band BLP；(c) in Fig. 6 show pair that ought be in the outer part
The coupling polarity of passage coupling bridge 4 is that the coupling polarity of negative coupling and subaisle coupling bridge 4 in the inner part is Jie when just coupling
The frequency response analogous diagram of matter waveguide filter, i.e., in the presence of two respectively in filter pass band BLP outer low-frequency range and outer high frequency
Trap wave point LA1 and HA1 in section, wherein, trap wave point HA1 Distance Filters passband closer to；(d) in Fig. 6 is shown ought be in the outer part
The coupling polarity of subaisle coupling bridge 4 when being that the coupling polarity of negative coupling and subaisle coupling bridge 4 in the inner part is negative coupling
Dielectric waveguide filter frequency response analogous diagram, that is, equally exist two respectively in filter pass band BLP outer low-frequency range
With the trap wave point LA1 and HA1 on outer high band, wherein, be equally trap wave point HA1 Distance Filters passband closer to.As optimization,
In order to obtain comparatively ideal Out-of-band rejection respectively in the both sides of filter pass band simultaneously, it is only necessary to which design is as follows：In tetrad cascade
In cross coupling structure, it is coupling polarity and the coupling polarity phase on waveguide main channel to set subaisle coupling bridge 4 in the outer part
Anti- coupling bridge structure.Thus zero equally extra without design cavity configuration, need to only be combined by simple cross-couplings
The trap wave point needed, the high rejection characteristic of dielectric waveguide filter is realized, shown beneficial to the electric property of product and small-sized
Change design.
Further optimize, for the coupling polarity coupling bridge structure opposite with the coupling polarity on waveguide main channel, together
Sample can be, but not limited to be provided with first blind hole of the depth between 36~55mm in the upper surface central area of the coupling bridge
501。
The dielectric waveguide filter for the cross coupling structure with the cascade of the first tetrad that the present embodiment provides,
The technique effect that its technique effect is referred to embodiment one is derived from like a dream, is repeated no more in this.
Embodiment three
Fig. 7 shows the Medium Wave Guide of the cross coupling structure with second of tetrad cascade provided by the utility model
The structural representation of wave filter.
The present embodiment enters one as the cross coupling structure with the cascade of the first tetrad described by embodiment two
Prioritization scheme is walked, its difference is：The Medium Wave Guide monomer 1 is rectangular parallelepiped structure, and the main channel is "Ji" type
Passage, and second Medium Wave Guide monomer only on waveguide main channel is (i.e. along first wave guide joint 201 to second waveguide joint
Second Medium Wave Guide monomer of 202 directions along number) respectively with the 5th Medium Wave Guide monomer (i.e. along first wave guide joint 201
The 5th Medium Wave Guide monomer to the direction of second waveguide joint 202 along number) it is connected by subaisle coupling bridge 4, although
Only realizing has second Medium Wave Guide monomer across the 3rd Medium Wave Guide monomer (i.e. along first wave guide joint 201 to the
The direction of two waveguide connector 202 along number the 3rd Medium Wave Guide monomer) and the 4th Medium Wave Guide monomer (connected along first wave
First 201 the 4th Medium Wave Guide monomer to the direction of second waveguide joint 202 along number) sent out with the 5th Medium Wave Guide monomer
Raw coupling, when can also produce two trap wave points, and make two trap wave points symmetrical on filter pass band.
The dielectric waveguide filter for the cross coupling structure that there is second of tetrad to cascade that the present embodiment provides,
Embodiment two is compared to also to have the following technical effect that：(1) can be logical in filtering while subaisle coupling bridge number is reduced
The both sides of band obtain comparatively ideal Out-of-band rejection respectively, further beneficial to the electric property displaying of product and Miniaturization Design.
Example IV
Fig. 8 shows the Medium Wave Guide of the cross coupling structure provided by the utility model with the cascade of the third tetrad
The structural representation of wave filter.
The present embodiment enters one as the cross coupling structure with second of tetrad cascade described by embodiment three
Prioritization scheme is walked, its difference is：In the cross coupling structure of tetrad cascade, it is coupling to set subaisle to couple bridge 4
Close polarity and couple bridge structure with the coupling polarity identical on waveguide main channel, set main channel in an intermediate position to couple bridge
3 be the coupling polarity coupling bridge structure opposite with the coupling polarity on waveguide main channel.Compared with the wave filter of embodiment three, this
The frequency response characteristic of embodiment wave filter will not change, i.e., can also produce two trap wave points, and make the two trap wave points
It is symmetrical on filter pass band.In the actual design of dielectric waveguide filter and production, due to the coupling of subaisle coupling bridge 4
Resultant often than main channel coupling bridge 3 coupling amount it is small, such as still using embodiment three cross coupling structure, it is necessary to coupling amount very
The very deep coupling bridge structure of small and blind hole, but couple bridge structure and be unfavorable for the processing and production of product, and use the present embodiment
Cross coupling structure, due to subaisle coupling bridge 4 coupled characteristic for positive coupling and coupling amount demand it is small, and main channel couples
The coupled characteristic of bridge 3 for negative coupling and coupling amount demand it is big, can so make that design structure is more reasonable, and product strength is more preferable, more
Be advantageous to the processing and production of product.
Further optimize, bridge structure is coupled with the coupling polarity identical on waveguide main channel for coupling polarity, can
With but be not limited to the coupling bridge upper surface central area not perforate or be provided with depth be less than 31mm the second blind hole 502.
The dielectric waveguide filter for the cross coupling structure with the cascade of the third tetrad that the present embodiment provides,
Embodiment three is compared to also to have the following technical effect that：(1) it can make that design structure is more reasonable, and product strength is more preferable, more have
Beneficial to the processing and production of product.
Embodiment five
Fig. 9 shows the dielectric waveguide filter of the cross coupling structure provided by the utility model that there are five disjunctors to cascade
Structural representation, Figure 10 show four kinds provided by the utility model have five disjunctors cascade cross coupling structure medium
The frequency response analogous diagram of waveguide filter.
The dielectric waveguide filter for the cross coupling structure that there are five disjunctors to cascade that the present embodiment provides is one
Seven rank wave filters, including seven Medium Wave Guide monomers 1, first wave guide joint 201 and second waveguide joint 202；Seven are given an account of
Matter waveguide monomer 1 couples bridge 3 by connecting main channel between two Medium Wave Guide monomers, is sequentially connected in series into waveguide main channel, institute
State first wave guide joint 201 and the second waveguide joint 202 and connect the medium ripple for being located at waveguide main channel both ends respectively
Lead monomer 1；Simultaneously provided with three connections on the waveguide main channel and two non-adjacent Medium Wave Guide monomers subaisle
Bridge 4 is coupled, forms the cross coupling structure of a five disjunctors cascade.
As shown in figure 9, the dotted line in figure is the trajectory of waveguide main channel, the Medium Wave Guide monomer 1 uses cylinder
Body structure, the main channel are " U " font passage, and include the cross coupling structure of a five disjunctors cascade：I.e. in waveguide
On main channel the 3rd Medium Wave Guide monomer (i.e. along first wave guide joint 201 to the direction of second waveguide joint 202 along number the
Three Medium Wave Guide monomers) respectively with the 5th Medium Wave Guide monomer (i.e. along first wave guide joint 201 to second waveguide joint
Five Medium Wave Guide monomer of 202 directions along number) and the 6th Medium Wave Guide monomer (i.e. along first wave guide joint 201 to the
Six Medium Wave Guide monomer of the direction of two waveguide connector 202 along number) it is connected by subaisle coupling bridge 4, in waveguide master
Second Medium Wave Guide monomer on passage is (i.e. along first wave guide joint 201 to the direction of second waveguide joint 202 along second counted
Individual Medium Wave Guide monomer) it is connected with the 6th Medium Wave Guide monomer by subaisle coupling bridge 4, it is achieved in described
3rd Medium Wave Guide monomer is across the 4th Medium Wave Guide monomer (i.e. along first wave guide joint 201 to second waveguide joint 202
Four Medium Wave Guide monomer of the direction along number) coupled with the 5th Medium Wave Guide monomer, realize described 3rd
Medium Wave Guide monomer crosses over the 4th Medium Wave Guide monomer and the 5th Medium Wave Guide monomer and the 6th Medium Wave Guide list
Body couples, and realizes second Medium Wave Guide monomer across the 3rd Medium Wave Guide monomer, the 4th Medium Wave Guide list
Body and the 5th Medium Wave Guide monomer couple with the 6th Medium Wave Guide monomer, thus can produce three trap wave points.
The cross coupling structure that five disjunctors cascade in the present embodiment can be regarded as the cross-couplings knot of a three disjunctors cascade
The combination of structure and the cross coupling structure of a five disjunctors cascade, can by the combination of different cross-couplings polarity and coupling amount
With but be not limited to obtain the dielectric waveguide filter of cross coupling structure of as shown in Figure 10 four kinds with the cascade of five disjunctors
Frequency response analogous diagram.
The dielectric waveguide filter for the cross coupling structure that there are five disjunctors to cascade that the present embodiment provides, its technology
Effect is referred to embodiment one and the technique effect of embodiment two is derived from like a dream, is repeated no more in this.
Embodiment six
Figure 11 shows the Medium Wave Guide filtering of the cross coupling structure provided by the utility model that there are six disjunctors to cascade
The structural representation of device.
The dielectric waveguide filter for the cross coupling structure that there are six disjunctors to cascade that the present embodiment provides is one
Six rank wave filters, including six Medium Wave Guide monomers 1, first wave guide joint 201 and second waveguide joint 202；Seven are given an account of
Matter waveguide monomer 1 couples bridge 3 by connecting main channel between two Medium Wave Guide monomers, is sequentially connected in series into waveguide main channel, institute
State first wave guide joint 201 and the second waveguide joint 202 and connect the medium ripple for being located at waveguide main channel both ends respectively
Lead monomer 1；Simultaneously provided with two connections on the waveguide main channel and two non-adjacent Medium Wave Guide monomers subaisle
Bridge 4 is coupled, forms the cross coupling structure of a six disjunctors cascade.
As shown in figure 11, the dotted line in figure is the trajectory of waveguide main channel, and the Medium Wave Guide monomer 1 uses positive four
Side shape column structure, the main channel are " U " font passage, and include the cross coupling structure of a six disjunctors cascade：I.e.
Second Medium Wave Guide monomer on waveguide main channel is (i.e. suitable along first wave guide joint 201 to the direction of second waveguide joint 202
Second several Medium Wave Guide monomers) with the 5th Medium Wave Guide monomer (i.e. along first wave guide joint 201 to second waveguide joint
Five Medium Wave Guide monomer of 202 directions along number) bridge 4 is coupled by the subaisle be connected, the on waveguide main channel
One Medium Wave Guide monomer (first Medium Wave Guide i.e. along first wave guide joint 201 to the direction of second waveguide joint 202 along number
Monomer) with the 6th Medium Wave Guide monomer (i.e. along first wave guide joint 201 to the direction of second waveguide joint 202 along the several the 6th
Individual Medium Wave Guide monomer) bridge 4 is coupled by the subaisle be connected, second Medium Wave Guide monomer is achieved in across the
Three Medium Wave Guide monomer (the 3rd Medium Wave Guides i.e. along first wave guide joint 201 to the direction of second waveguide joint 202 along number
Monomer) and the 4th Medium Wave Guide monomer (i.e. along first wave guide joint 201 to the direction of second waveguide joint 202 along number the 4th
Individual Medium Wave Guide monomer) coupled with the 5th Medium Wave Guide monomer, realize first Medium Wave Guide monomer across
More second Medium Wave Guide monomer, the 3rd Medium Wave Guide monomer, the 4th Medium Wave Guide monomer and the 5th Medium Wave Guide list
Body couples with the 6th Medium Wave Guide monomer, thus can produce four trap wave points.
As shown in figure 11, the cross coupling structure that six disjunctors cascade in the present embodiment can be regarded as two such as example IV institutes
The combination of the cross coupling structure for the third tetrad cascade stated, and in the cross coupling structure of each tetrad cascade,
It is that coupling polarity couples bridge structure with the coupling polarity identical on waveguide main channel to set subaisle to couple bridge 4, and setting is in
The main channel coupling bridge 3 in centre position is the coupling polarity coupling bridge structure opposite with the coupling polarity on waveguide main channel.By
The outer low-frequency range of band that two trap wave points are located at filter pass band may be present in this, and two trap wave points are located at the outer high frequency of band of filter pass band
Section, and make one high and one low two trap wave points symmetrical on filter pass band.
The dielectric waveguide filter for the cross coupling structure that there are six disjunctors to cascade that the present embodiment provides, its technology
The technique effect that effect is referred to example IV is derived from like a dream, is repeated no more in this.
As described above, it can preferably realize the utility model.For a person skilled in the art, it is new according to this practicality
The teaching of type, design various forms of dielectric waveguide filters with cross coupling structure and do not need creative labor
It is dynamic.These embodiments are changed in the case where not departing from principle of the present utility model and spirit, change, replace, integrated
Still fallen within modification in the scope of protection of the utility model.
Claims (10)
1. a kind of dielectric waveguide filter with cross coupling structure, it is characterised in that including Medium Wave Guide monomer (1),
One waveguide connector (201) and second waveguide joint (202)；
The number of the Medium Wave Guide monomer (1) is multiple, and is coupled by connecting main channel between two Medium Wave Guide monomers
Bridge (3), all Medium Wave Guide monomers (1) are sequentially connected in series into waveguide main channel, the first wave guide joint (201) and described
Second waveguide joint (202) connects the Medium Wave Guide monomer (1) positioned at waveguide main channel both ends respectively；
Provided with connection on the waveguide main channel and two non-adjacent Medium Wave Guide monomers subaisle coupling bridge (4), from
And the cross coupling structure for having concatemer to cascade is formed on the waveguide main channel.
2. a kind of dielectric waveguide filter with cross coupling structure as claimed in claim 1, it is characterised in that when in institute
When stating the cross coupling structure for being formed on waveguide main channel and thering is tetrad to cascade, then in the cross coupling structure of tetrad cascade
In, set subaisle in the outer part to couple bridge (4) as the coupling polarity coupling bridge opposite with the coupling polarity on waveguide main channel
Structure.
3. a kind of dielectric waveguide filter with cross coupling structure as claimed in claim 1, it is characterised in that connect four
In the cross coupling structure of body cascade, if only existing subaisle coupling bridge (4) in the outer part, the subaisle is set to couple bridge
(4) bridge structure is coupled with the coupling polarity identical on waveguide main channel for coupling polarity, sets master in an intermediate position to lead to
Road coupling bridge (3) is the coupling polarity coupling bridge structure opposite with the coupling polarity on waveguide main channel.
4. a kind of dielectric waveguide filter with cross coupling structure as claimed in claim 2 or claim 3, it is characterised in that right
In the coupling polarity coupling bridge structure opposite with the coupling polarity on waveguide main channel, in the upper surface central area of the coupling bridge
It is provided with first blind hole (501) of the depth between 36~55mm.
5. a kind of dielectric waveguide filter with cross coupling structure as claimed in claim 3, it is characterised in that for coupling
Close polarity and couple bridge structure with the coupling polarity identical on waveguide main channel, do not opened in the upper surface central area of the coupling bridge
Hole is provided with the second blind hole (502) that depth is less than 31mm.
6. a kind of dielectric waveguide filter with cross coupling structure as claimed in claim 1, it is characterised in that described
The outer surface of Medium Wave Guide monomer (1) is provided with metal screen layer.
A kind of 7. dielectric waveguide filter with cross coupling structure as claimed in claim 6, it is characterised in that the gold
It is by silver layer to belong to screen layer.
8. a kind of dielectric waveguide filter with cross coupling structure as claimed in claim 1, it is characterised in that given an account of
Matter waveguide monomer (1) is cylindrical structure, regular polygon cylinder structure or rectangular parallelepiped structure.
9. a kind of dielectric waveguide filter with cross coupling structure as claimed in claim 1, it is characterised in that given an account of
Matter waveguide monomer (1) is the solid made of ceramic medium material.
10. a kind of dielectric waveguide filter with cross coupling structure as claimed in claim 1, it is characterised in that described
Waveguide main channel is " V " font passage, " U " font passage or "Ji" type passage.
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| CN201720441798.2U CN206864582U (en) | 2017-04-25 | 2017-04-25 | A kind of dielectric waveguide filter with cross coupling structure |
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| CN201720441798.2U CN206864582U (en) | 2017-04-25 | 2017-04-25 | A kind of dielectric waveguide filter with cross coupling structure |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106898849A (en) * | 2017-04-25 | 2017-06-27 | 四川省韬光通信有限公司 | A kind of dielectric waveguide filter with cross coupling structure |
| WO2020135646A1 (en) * | 2018-12-27 | 2020-07-02 | 华为技术有限公司 | Waveguide filter using ceramic medium |
| CN111384529A (en) * | 2018-12-31 | 2020-07-07 | 深圳市大富科技股份有限公司 | Dielectric filter, method for preparing dielectric filter and communication equipment |
| CN111384527A (en) * | 2018-12-31 | 2020-07-07 | 深圳市大富科技股份有限公司 | Dielectric filter, method for preparing dielectric filter and communication equipment |
| CN111384512A (en) * | 2018-12-31 | 2020-07-07 | 深圳市大富科技股份有限公司 | Dielectric filter, method for preparing dielectric filter and communication equipment |
-
2017
- 2017-04-25 CN CN201720441798.2U patent/CN206864582U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106898849A (en) * | 2017-04-25 | 2017-06-27 | 四川省韬光通信有限公司 | A kind of dielectric waveguide filter with cross coupling structure |
| WO2020135646A1 (en) * | 2018-12-27 | 2020-07-02 | 华为技术有限公司 | Waveguide filter using ceramic medium |
| CN111384529A (en) * | 2018-12-31 | 2020-07-07 | 深圳市大富科技股份有限公司 | Dielectric filter, method for preparing dielectric filter and communication equipment |
| CN111384527A (en) * | 2018-12-31 | 2020-07-07 | 深圳市大富科技股份有限公司 | Dielectric filter, method for preparing dielectric filter and communication equipment |
| CN111384512A (en) * | 2018-12-31 | 2020-07-07 | 深圳市大富科技股份有限公司 | Dielectric filter, method for preparing dielectric filter and communication equipment |
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