CN108370080A - Filter assembly - Google Patents
Filter assembly Download PDFInfo
- Publication number
- CN108370080A CN108370080A CN201580085098.8A CN201580085098A CN108370080A CN 108370080 A CN108370080 A CN 108370080A CN 201580085098 A CN201580085098 A CN 201580085098A CN 108370080 A CN108370080 A CN 108370080A
- Authority
- CN
- China
- Prior art keywords
- filter assembly
- conducting element
- filter
- fastener
- conductive film
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P7/00—Resonators of the waveguide type
- H01P7/10—Dielectric resonators
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P1/00—Auxiliary devices
- H01P1/20—Frequency-selective devices, e.g. filters
- H01P1/207—Hollow waveguide filters
- H01P1/208—Cascaded cavities; Cascaded resonators inside a hollow waveguide structure
- H01P1/2084—Cascaded cavities; Cascaded resonators inside a hollow waveguide structure with dielectric resonators
Landscapes
- Control Of Motors That Do Not Use Commutators (AREA)
Abstract
The filter assembly (1) of filter chassis (2) with limiting filtering device chamber (3).Filter chassis (2) includes the wall (4) with inside (5) and outside (6).The boundary of inside (5) the limiting filtering device chamber (3) of wall (4).At least one dielectric rod (7) of arrangement in filter cavity (3).Dielectric rod (7) extends between the first end and a second end.First conducting element (8) is conductively fixed to the first end of dielectric rod (7).Second conducting element (9) is conductively fixed to the second end of dielectric rod (7).First conducting element (8) is fixed to wall (4).Conductive film (10) is conductively fixed to the second conducting element (9), and conductive film (10) is conductively fixed to filter chassis (2).
Description
Technical field
All aspects of this disclosure relate in general to filter field.It is more particularly related to filter assembly.
Background technology
Filter is to use to be drawn by the property of the transmission medium between sender and recipients to compensate in a communications system
Rise imbalance, such as interfere, circuit.Filter removes needed for any unwanted communication signal component and/or enhancing
Communication signal component.
Radio frequency (RF) filter and microwave filter represent a kind of filter, designed for megahertz to gigahertz frequencies model
It is operated on signal in enclosing.The frequency range is most of broadcast radios, TV and wireless communication system, such as, bee
Nest communication system, Wi-Fi, WiMax, LTE etc., used range.Therefore, most of wireless telecom equipments will include filtering hair
Certain filter assembly send and/or received signal.In addition, filter assembly is also used for radio interface communication node,
Such as, the wireless aerial of broadcast radio system, the TV broadcast antennas of television system and cell phone system is wireless
Electric base station.Such filter is commonly used as the component part for duplexer and homodromy, to combine or detach
Multiple frequency bands.
Currently, two kinds of technologies are widely used in radio base station front end filter.These wave filter technologies, by multiple humorous
The device that shakes composition coaxial filter and ceramic filter, be coupled, with provide needed for signal it is suitable transmit and it is right
The refusal of unwanted signal.
The motive force in the exploitation of filter is dimensional problem at present.Smaller filter allows wherein to install filter
Smaller electronic equipment.This reduces the device space needed for storage, transport and installation in client's position.Therefore, it is intended that carrying
For the small and compact filter with enough performances.
A kind of method for measuring performance of filter is the quality factor or Q factor by them.If filter can
The frequency range narrower than centre frequency is refused in selection, then filter has high Q factor.Q factor indicates to deposit in resonance circuit
The relationship between the energy of consumption of storage.Q factor can be defined as the ratio of centre frequency divided by three dB bandwidth.Filter
Pass-band loss is inversely proportional with zero load Q.
Conventional coaxial resonator manufacture with metal central conductor is cheap, and provides enough performances, such as,
Under 2GHz frequencies, cavity volume is 22 × 22 × 22mm3When, Q factor 2500 or cavity volume are 37 × 37 × 37mm3When, Q because
Son is 4300 and low manufacturing cost.The size of these conventional coaxial resonators is completely expansible, such as, coaxial resonance
The length of device is 15 millimeters to 100 millimeters, this depends on used frequency.Coaxial resonator can use high-k material
Material, without the use of metal, to reduce their overall dimensions, to realize scalability.One of generic coaxial resonator lacks
Point can be limited power handling capability, this is small caused by the gap between resonator and tuned cell.
Ceramic resonator, such as, lateral electricity (TE) TE01d monotype resonators of ceramics are used for high-performance, such as example
Such as, 100,000 or more Q factor.Compared with traditional coaxial resonator or waveguide, ceramic resonator has higher performance,
In under 2GHz frequencies, maximum Q factor be less than 10,000.
Ceramic resonator is made of the piezoelectric ceramics of high stability, is usually made of lead zirconate titanate (PZT), plays machinery
The effect of resonator.Ceramic resonator for TE and TM patterns by such as oxygen, barium, titanium, zinc, neodymium and lanthanum material compositions system
At.TE01d monotype ceramic resonators need sizable chamber.Under 1.9GHz frequencies, when chamber is about 30 × 30mm (height
× diameter) when, the Q factor of coaxial resonator is about 3200.In chamber same as described above, TE01d monotype ceramic disks are humorous
The size of device of shaking is about 27.5 × 10mm (height × diameter).Under 1.9GHz frequencies, the size of the chamber with TE01d patterns
Smaller is impossible, because necessarily increasing disk diameter in this way.
In addition, some manufacturers have used dielectric resonator, and such as, transversal magnetic (TM) monotype resonator,
As radio base station front end filter.Compared with metal resonator, TM resonators can be substantially reduced size, without opposite
There is performance loss in metal coaxial resonator.It is typical compared with the coaxial metal resonator with same unloaded quality factor
TM monotype resonators save 20-50% volume, this depend on ceramics resonant frequency and dielectric constant.
Also the other technologies for having been used to radio base station front end filter are the extremely complex TM double mode resonance of shape
Tri- mode resonator of device and TM.With the coaxial metal resonator phase with the same empty mass factor and identical resonant frequency
Than reducing about 30-80% using the size of the technology.
The application of TM patterns is when resonator both ends are grounded.For making the common method of resonator two-terminal-grounding be example
Such as dielectric rod is welded direct on filter housing and filter lid.TM pattern dielectric rods are attached to filter using welding
The problem of shell and/or the known solution covered, is that once dielectric rod has been assembled and has welded, then dielectric rod cannot
It is replaced.In order to replace the single dielectric rod in filter, at least one end of every other welding dielectric rod is necessary in filter
By defluxing, such as, from lid side defluxing.However in practice, this is impossible, because of the conduction at dielectric rod end
Plated material, it is such as, silver-plated, it will be only used for once welding operation, therefore dielectric rod is non-exchange.
In the TM mode filters known to another kind, dielectric rod is provided with leading for the beadlike form for being placed on the first rod end
Electric device.Washer and the outside groove conductive contact in the first wall of filter chassis (can be lid), chassis size and shape
Shape is designed to receive and contact washer.Groove is threaded, and the first screw thread disk is threadedly engaged with groove to incite somebody to action
Washer is pressed into groove, to ensure the reliable contacts between chassis and washer.In the center of groove, there are one openings, allow dielectric
In bar insertion wave filter chamber.Dielectric rod is equipped with the second conducting element of the second screw thread disk-form at the second opposite rod end.The
Two screw thread disks are threadedly engaged with the tapped through hole in the second wall of filter chassis, second wall be located at filter cavity relative to
On the opposite side of first wall.This structure allows to replace dielectric rod.However, when the tapped through hole in the second screw thread disk and the second wall
When engagement, this structure will make small metallic particles enter filter cavity.This will cause smaller size to reduce and non-optimal
PIM (passive intermodulation), because bottom/washer of dielectric rod is screwed into chassis, and this leads to silver-plated washer contacts surface phase
Silver-plated chassis surface is rotated.This frictional movement between silver-plated component will discharge Argent grain and become the sources PIM.In addition,
By the way that the both ends of bar are rigidly secured on filter chassis, due to manufacturing tolerance or since both ends caused by thermal expansion are inaccurate
Power cracked in dielectric rod may be led to by really so that dielectric rod is exposed to brigadier.
Since ceramic dielectric bar is fragile, dielectric rod is fixed on its in filter cavity in a manner of replaceable
His solution is infeasible or undesirable.
Invention content
The object of the present invention is to provide a kind of filter assemblies overcome or at least reduce the above problem.
Foregoing and other purpose is realized by the feature of independent claims.Further way of realization is from appurtenance
It is required that, it is apparent in the description and the appended drawings.
According in a first aspect, above and other objects and advantages are obtained by a kind of filter assembly, the filter group
Part includes：The filter chassis of limiting filtering device chamber, the filter chassis includes wall, and the wall has inner side and outer side, institute
The inside for stating wall limits the boundary of the filter cavity, is arranged at least one of the filter cavity (3) dielectric rod,
The dielectric rod extends between the first end and a second end, and be conductively fixed to the first end of the dielectric rod first is led
Electric device, is conductively fixed to the second conducting element of the second end of the dielectric rod, and first conducting element (8) is solid
Surely the wall (4) is arrived, the conductive film (10) of second conducting element (9), and the conductive film (10) are conductively fixed to
Conductively it is fixed to the filter chassis (2).
Since the first end of dielectric rod is connected to the wall of the chamber, the second end of dielectric rod is connected to relatively flexible conduction
The first end of film, dielectric rod is only rigidly fixed with its first end, and the second end of dielectric rod is according to the connection phase of first end to wall
To freely taking position.Therefore, dielectric rod is suspended on from its first end relative stiffness on wall, and from its opposite second end
It is suspended on conductive film to relative relaxation, may be not exclusively aligned to avoid the stress in dielectric rod from being rigidly suspended on two
End/hitch point on.This solution avoids in dielectric rod bending force and generate in dielectric rod stress.
In the first possible realization method of first aspect, first conducting element is rigidly secured to the filter
The wall of wave device chamber.
In second of possible realization method of first aspect or any realization method of first aspect, described second leads
Electric device does not have any rigid connection with the filter chassis.Therefore, at the second end of the dielectric rod, the dielectric rod
Only the filter chassis is conductively connected to via the second conducting element and the conductive film (flexible).
In the third possible realization method of first aspect or any realization method of first aspect, described second leads
Electric device is only mechanically connected to the filter chassis by the conductive film.
In the 4th kind of possible realization method of first aspect or any realization method of first aspect, the conductive film
It is foil.
In the 5th kind of possible realization method of first aspect or any realization method of first aspect, the conductive film
It is aluminium flake of the thickness between (about) 0.2mm and (about) 0.3mm.
In the 6th kind of possible realization method of first aspect or any realization method of first aspect, the chassis is
Metal chassis, and the metal of the wherein described chassis and the metal of the conductive film are substantially the same or preferably identical gold
Belong to.Therefore, the thermal dilation difference between the chassis and the conductive film can be minimized or avoided.
In the 7th kind of possible realization method of first aspect or any realization method of first aspect, described first leads
There is electric device the first axis contacted with the wall to face contact surface.
In the 8th kind of possible realization method of first aspect or any realization method of first aspect, described second leads
Electric device has the second axially facing contact surface contacted with the conductive film.
In the 9th kind of possible realization method of first aspect or any realization method of first aspect, the filter
Component further includes the lid for partly covering the filter cavity, the part of the conductive film be placed on the lid and bottom frame it
Between.It is thereby achieved that the good electrical contact between the chassis and the conductive film.
In the tenth kind of possible realization method of first aspect or any realization method of first aspect, the lid setting
There is an insertion opening, the insertion opening is designed shape and size to allow the electric pole and first conducting element and described
Second conducting element is inserted through the insertion opening together.
In a kind of the tenth possible realization method of first aspect or any realization method of first aspect, the lid quilt
It is configured to the conductive film being pressed onto on the surface of the chassis.It is thereby achieved that the good electricity between chassis and conductive film
Contact.
In the 12nd kind of possible realization method of first aspect or any realization method of first aspect, the wall is set
It is equipped with the first connection opening, and the first fastener wherein applied from the outside of the wall is connected to first conduction
Element.Therefore, the first end of the dielectric rod can be fixed on wall, without having by the opposite shifting between metal parts
It is dynamic, it is relatively moved caused by for establishing the rotation being threadedly coupled between such as described chassis and the fastener, release
The risk of the penalty of filter assembly is come in filter cavity and made to metal parts.
In the 13rd kind of possible realization method of first aspect or any realization method of first aspect, described first
Conducting element and/or first fastener extend at least partly into the first connection opening.
In the 14th kind of possible realization method of first aspect or any realization method of first aspect, described first
Fastener and first conducting element are threadedly engaged.
In the 15th kind of possible realization method of first aspect or any realization method of first aspect, described first
Fastener is rotated by first fastener and first conducting element is static connects with the first conducting element screw thread
It closes.It can thus be avoided having any twisting resistance in fragile dielectric rod.
In the 16th kind of possible realization method of first aspect or any realization method of first aspect, described first
Conducting element has the first bonding part for projecting through the first connection opening in the wall.
In the 17th kind of possible realization method of first aspect or any realization method of first aspect, described first
Fastener is engaged with the described first first bonding part for connecting opening projected through in the wall.
In the 18th kind of possible realization method of first aspect or any realization method of first aspect, around described
A part for the wall of first connection opening is arranged in the first axis in face of contact surface and first fastener
Between third axially facing contact surface.
In the 19th kind of possible realization method of first aspect or any realization method of first aspect, described first
Bonding part includes external screw thread cylindrical part, and first fastener includes internal thread hole, and wherein described first
Fastener is threadedly engaged with first bonding part.
In the 20th kind of possible realization method of first aspect or any realization method of first aspect, the conduction
Film is provided with the second connection opening, and the second fastener wherein applied from the outside of the conductive film is connected to described second
Conducting element.
In a kind of the 20th possible realization method of first aspect or any realization method of first aspect, described
Two conducting elements have the second bonding part for projecting through the hole in the metal film.
In the 22nd kind of possible realization method of first aspect or any realization method of first aspect, described
Two fasteners and second conducting element are threadedly engaged.
In the 23rd kind of possible realization method of first aspect or any realization method of first aspect, described
Two fasteners rotated by second fastener and second conducting element it is static come with the second conducting element screw thread
Engagement.
In the 24th kind of possible realization method of first aspect or any realization method of first aspect, described
Two fasteners are engaged with the described second second bonding part for connecting opening projected through in the metal film.
It is described to lead in the 25th kind of possible realization method of first aspect or any realization method of first aspect
Electrolemma is arranged between the second axially facing contact surface and the 4th axially facing contact surface of second fastener.
In the 26th kind of possible realization method of first aspect or any realization method of first aspect, described
Two bonding parts include external screw thread cylindrical part, and second fastener includes internal thread hole, and wherein described
Two fasteners are threadedly engaged with second bonding part.
In the 27th kind of possible realization method of first aspect or any realization method of first aspect, described
One conducting element is conductively fixed to the first end by solder, by electroconductive binder or by conducting resinl.
In the 28th kind of possible realization method of first aspect or any realization method of first aspect, described
Two conducting elements are conductively fixed to the second end by solder, by electroconductive binder or by conducting resinl.
In the 29th kind of possible realization method of first aspect or any realization method of first aspect, given an account of
Electric pole is the hollow cylinder for having cylindrical hollow interior.
In the 30th kind of possible realization method of first aspect or any realization method of first aspect, described first
Conducting element and/or the second conducting element are provided with the perforation axially aligned with the cylindrical hollow interior of the dielectric rod
Hole.
These and other aspects of the invention will be apparent from example described below and embodiment.
Description of the drawings
In the part in detailed below of the disclosure, this hair is explained in greater detail in example embodiment shown in refer to the attached drawing
It is bright, wherein：
Fig. 1 is the sectional view of the example embodiment for the filter assembly for showing single dielectric rod,
Fig. 2 is the sectional view of the dielectric rod used in the filter assembly of Fig. 1,
Fig. 3 is the sectional view of another example embodiment of the filter assembly with multiple dielectric rods,
Fig. 4 is the sectional view of the promotion of the filter assembly of Fig. 3, and
Fig. 5 is the vertical view of the filter assembly of Fig. 3.
Specific implementation mode
Fig. 1 shows the cross section of the filter assembly 1 according to an example embodiment.Filter assembly 1 includes filtering
Device chassis 2 and at least one dielectric rod 7.Filter assembly 1 may include multiple dielectric rods 7.However, illustrating only in Fig. 1
One dielectric rod 7.Filter assembly 1 can be TM monotype resonators.Fig. 2 illustrates in greater detail dielectric rod 7.
1 limiting filtering device chamber 3 of filter chassis, filter cavity 3 can use lid or lid 14 to cover.2 He of filter chassis
Lid 1 can be made of the silver-plated copper for example on aluminium.Filter cavity 3 by multiple walls of the part as filter chassis 2 with
And it is limited by conductive film 10.Conductive film 10 is placed in the open side of filter cavity 3, and lid 14 is placed on conductive film 10
On.Conductive film 10 is sandwiched between the surface of chassis 2 and the surface of lid 10, so as between filter chassis 2 and conductive film 10
Establish reliable electrical connection.In one embodiment, conductive film 10 is foil.It is suitable for this thin metal of conductive cap
The example of piece is sheet metal of the thickness between about 0.2mm and about 0.3mm.Conductive film can be made of aluminum or aluminum alloy.It is conductive
Film 10 can be aluminum or aluminum alloy piece of the thickness between about 0.2mm and about 0.3mm.Other suitable metals have good
The material of electric conductivity can also be used for film.Conductive film 10 can be layered, and each layer has different performance, and by different material systems
At.
In one embodiment, chassis 2 and conductive film 10 can be made of identical or substantially the same metal, to avoid
Any difference of the thermal expansion of two articles.
One in wall 4 is used to one end of dielectric rod 7 being rigidly secured to filter chassis 2.In the example embodiment
In, wall 4 is located on the opposite side relative to conductive film 10 of chamber.Wall 4 has in face of the inside 5 of filter cavity 3 and backwards to filtering
The outside 6 of device chamber 3.The boundary of the 5 limiting filtering device chamber 3 of inside of wall 4.
At least one dielectric rod 7 is arranged in inside filter cavity 3.Dielectric rod 7 extends between the first end and a second end.It is situated between
Electric pole 7 extends to conductive film 10 from wall 4, and conductive film 10 is arranged on the opposite side relative to wall 4 of filter cavity 3.First leads
Electric device 8 is conductively fixed to the first end of dielectric rod 7.Second conducting element 9 is conductively fixed to the second of dielectric rod 7.The
One and/or second conducting element 8,9 can be coated to improve electrical contact, such as by silver-plated.
In the shown embodiment, dielectric rod 7 is the hollow cylinder for having cylindrical hollow interior 22 it should be appreciated that
, dielectric rod 7 can also be solid hopkinson bar (not shown).
In one embodiment, the first conducting element 8 by solder, it is conductive by electroconductive binder or by conducting resinl
Ground is fixed to the first end of dielectric rod 7.In one embodiment, the second conducting element 9 by solder, by electroconductive binder or
The second end of dielectric rod 7 is conductively fixed to by conducting resinl.
First conducting element 8 is fixed to wall 4.First conducting element 8 is preferably rigidly fixed to the wall of filter cavity
4, so that the position of dielectric rod 7 is limited by the connection between the first conducting element 8 and wall 4.
Second conducting element 9 is conductively fixed to conductive film 10.In one embodiment, the second conducting element 9 only passes through
Conductive film 10 is mechanically connected to filter chassis 2.Second conducting element 9 is not connected to filter chassis in any other way
2.Second conducting element 9 is also not connected to lid 13.Connection between second conducting element 9 and conductive film is not formed to be led for second
The rigid connection of electric device 9, because of conductive film relative flexibility.Therefore, the second conducting element 9 and filter chassis 2 be not any
Rigid connection.Therefore, though should have due to such as manufacturing tolerance or thermal expansion it is slight be misaligned, film will not apply appoint
What significant power will not generate any stress on the second conducting element 9 in (relatively fragile) dielectric rod 7.
In one embodiment, the first conducting element 8 and the second conducting element 9 be include the cylinder with annular flange
Partial metal object.
First conducting element 8 has faces contact surface 11 with wall 4, the first axis of the inside 5 of preferred wall 4, contact.
In one embodiment, first axis faces the part that contact surface 11 is the annular flange of the first conducting element 8.
Second conducting element 9 have with conductive film 10, preferred conductive film 10 face the surface of filter cavity 3, contact
The second axially facing contact surface 12.In one embodiment, the second axially facing contact surface 12 is the second conducting element 9
Annular flange a part.
Lid 13 partly covers filter cavity 3, and a part for conductive film 10 is between lid 13 and chassis 2.Substantially, it removes
Except insertion opening 14, lid 13 covers entire filter cavity.Conductive film 10 is sandwiched in side and the conductive film of filter chassis 2
Between 10 side.Lid 13 is configured to conductive film 10 being pressed onto on the surface (side) of chassis 2, such as by means of suitably fastening
Part, for example, being screwed into the screw in chassis 2 across lid 13.
Insertion opening 14 is designed shape and size to allow dielectric rod 7 and the first conducting element 8 and the second conductive element
Part 9 is inserted through insertion opening 14 together.
Wall 4 is provided with the first connection opening 15.First connection opening 15 may, for example, be simple round through hole.First
Fastener 16 applies from the outside of wall 46, and is connected to the first conducting element 8.
First conducting element 8 has the first bonding part 17 for projecting through the first connection opening 15 in wall 4.First connects
It closes part 17 and may, for example, be cylindrical part.The engagement of first fastener 16 projects through the first connection opening 15 in wall 4
First bonding part 17.First fastener 16 may, for example, be the nut of internal thread hole.
It is clipped in first axis around a part for the wall 4 of the first connection opening 15 and faces contact surface 11 and the first fastener
Between 16 third axially facing contact surface 18.Therefore, the first conducting element 8 securely and is rigidly attached to wall 4.
In one embodiment, the first bonding part 17 is provided with external screw thread cylindrical part, and the first fastener 16
Including matched internal thread hole, and the first fastener 16 is threadedly engaged with the first bonding part 17.
In one embodiment, the first fastener 16 rotated by the first fastener 16 and the first conducting element 8 it is static come
It is threadedly engaged with the first conducting element 8.
In an embodiment (not shown), first block of data 50, the first fastener 16 extends at least partly into the first connection opening 15.
Conductive film 10 is provided with the second connection opening 18.Second fastener 19 applies from the outside of conductive film 10, and even
It is connected to the second conducting element 9.
In one embodiment, the second conducting element 9 has the second connection opening 18 projected through in metal film 10
Second bonding part 20.Preferably, the second fastener 19 and the second conducting element 9 are to be threadedly engaged.Second fastener 19 is preferably
Ground is rotated by the second fastener 19 and second conducting element 9 is static is threadedly engaged with the second conducting element 9.
In one embodiment, the engagement of the second fastener 19 projects through the of the second connection opening 18 in metal film 10
Two bonding parts 20.
A part for conductive film 10 is clipped in the second axially facing contact surface 12 and the second fastener of the second conducting element 9
Between 19 the 4th axially facing contact surface 21.
Second bonding part 20 is provided with external screw thread cylindrical part, and the second fastener 19 includes matched internal thread
Hole.Second fastener 19 can be the nut being threadedly engaged with the second bonding part 20.
In one embodiment, the first conducting element 8 and/or the second conducting element 9 are provided with the cylinder with dielectric rod 7
The through hole 27,28 that hollow inside 22 is axially aligned.In the shown embodiment, inside the through hole 28 in the second conducting element 9
Ground is screwed with the screw thread tuning plug 25 received wherein.After the adjustment, the locking of the external screw thread with tuning plug 25 can be passed through
Tuning plug 25 is fixed on its position by nut 26.
Fig. 3 is the longitdinal cross-section diagram across filter assembly 1 according to example embodiment.
Filter chassis 2 can be provided with one or more filter cavities, and filter cavity can be arranged there are one or
Multiple dielectric rods 7.Dielectric rod 7 can be all arranged in filter cavity with identical orientation or be arranged with different orientations.
Dielectric rod 7 can be used for being formed lateral electrical filter and/or transverse magnetic monotype filter.According to some implementations
Example, multiple dielectric rods 7 can be parallelly continuously arranged in a filter chassis 2, with formed lateral electrical filter and/or
Transverse magnetic monotype formula filter.
According to some embodiments, it can continuously arrange multiple dielectric rods 7 to form transverse magnetic dual-mode filter.These realities
It includes the multiple dielectric rods 7 that can continuously arrange to apply example, so that at least two in multiple dielectric rods 7 are at a filter bottom
It is perpendicular to one another and/or orthogonal in frame 2.
Fig. 4 is the sectional view of the promotion of the filter assembly for the Fig. 3 for being fitted without any dielectric rod 7.Fig. 5 is the filter of Fig. 3
The vertical view of wave device assembly.
It has been combined various embodiments herein and describes the present invention.However, those skilled in the art are required by practice
When the invention of protection, by studying attached drawing, disclosure and the accompanying claims, it is possible to understand that and realize the disclosed embodiments
Other modifications.In the claims, word " comprising " is not excluded for other elements or step, and indefinite article "a" or "an"
It is not excluded for multiple.The function of some projects described in claim may be implemented in single processor or other units.Certain hands
The combination that the fact that section is recorded in mutually different dependent claims is not offered as these means cannot advantageously be made
With.Computer program can be stored/distributed on suitable medium, such as together with other hardware or as the one of other hardware
The optical storage medium or solid state medium that part provides, but can also be distributed otherwise, for example, via internet or its
His wired or wireless telecommunication system.
The reference numeral used in claim is not necessarily to be construed as limitation range.
Claims (31)
1. a kind of filter assembly (1), including：
Filter chassis (2), limiting filtering device chamber (3),
The filter chassis (2) includes wall (4),
The wall (4) has inside (5) and outside (6),
The inside (5) of the wall (4) limits the boundary of the filter cavity (3),
At least one dielectric rod (7), is arranged in the filter cavity (3),
The dielectric rod (7) extends between the first end and a second end,
First conducting element (8) is conductively fixed to the first end of the dielectric rod (7),
Second conducting element (9) is conductively fixed to the second end of the dielectric rod (7),
First conducting element (8) is fixed to the wall (4),
Conductive film (10) is conductively fixed to second conducting element (9), and
The conductive film (10) is conductively fixed to the filter chassis (2).
2. filter assembly (1) according to claim 1, wherein first conducting element (8) is rigidly secured to institute
State the wall (4) of filter cavity.
3. filter assembly (1) according to claim 2, wherein second conducting element (9) and the filter bottom
Frame (2) is without any rigid connection.
4. filter assembly (1) according to any one of claim 1 to 3, wherein second conducting element (9) is only logical
It crosses the conductive film (10) and is mechanically connected to the filter chassis (2).
5. filter assembly (1) according to claim 3, wherein the conductive film (10) is foil.
6. filter assembly (1) according to any one of claim 1 to 5, wherein the conductive film (10) is that thickness exists
Sheet metal between 0.2mm and 0.3mm.
7. filter assembly (1) according to claim 5 or 6, wherein the chassis (2) is metal chassis, and wherein
The metal of the filter chassis (2) and the metal of the conductive film (10) are substantially the same metals.
8. filter assembly (1) according to any one of claim 1 to 7, wherein first conducting element (8) has
The first axis contacted with the wall faces contact surface (11).
9. filter assembly (1) according to any one of claim 1 to 8, wherein second conducting element (9) has
The the second axially facing contact surface (12) contacted with the conductive film (10).
10. filter assembly (1) according to any one of claim 1 to 9, further includes partly covering the filter
A part for the lid (13) of chamber (3), the conductive film (10) is placed between lid (13) and the chassis (2).
11. filter assembly (1) according to claim 10, wherein the lid (13) is provided with insertion opening (14), institute
It states insertion opening and is designed shape and size to allow the electric pole (7) to be led with first conducting element (8) and described second
Electric device (9) is inserted through the insertion opening (14) together.
12. the filter assembly (1) according to claim 10 or 11, wherein the lid (13) is configured as the conduction
Film (10) is pressed onto on the surface of the chassis (2).
13. filter assembly (1) according to any one of claim 1 to 12, wherein the wall (4) is provided with the first company
Opening (15) is connect, and the first fastener (16) wherein applied from the outside of the wall is connected to first conductive element
Part (8).
14. filter assembly (1) according to claim 13, wherein first conducting element (8) and/or described first
Fastener (16) extends at least partly into the first connection opening (15).
15. filter assembly (1) according to claim 14, wherein first fastener (16) and first conduction
Element (8) is threadedly engaged.
16. filter assembly (1) according to claim 15, wherein first fastener (16) is tight by described first
Firmware (16) rotate and first conducting element (8) it is static come with first conducting element (8) be threadedly engaged.
17. the filter assembly (1) according to any one of claim 13 to 16, wherein first conducting element (8)
The first bonding part (17) with the first connection opening (15) projected through in the wall (4).
18. filter assembly (1) according to claim 17, wherein first fastener (16) and projecting through described
First bonding part (17) engagement of the first connection opening (15) in wall (4).
19. filter assembly (1) according to claim 18, wherein around the wall of the first connection opening (15)
(4) a part is arranged in the third axial face that the first axis faces contact surface (11) and first fastener (16)
Between contact surface (18).
20. according to the filter assembly (1) described in claim 17 to 19, wherein first bonding part (17) includes outer spiral shell
Line cylindrical part, and first fastener (16) includes internal thread hole, and wherein described first fastener with it is described
First bonding part (17) is threadedly engaged.
21. the filter assembly (1) according to any one of claim 1 to 20, wherein the conductive film (10) is provided with
Second connection opening (18), and be wherein connected to from the second fastener (19) of the outside of the conductive film (10) application described
Second conducting element (9).
22. filter assembly (1) according to claim 21 projects through wherein second conducting element (9) has
The second bonding part (20) of the second connection opening (18) in the metal film (10).
23. the filter assembly (1) according to claim 21 or 22, wherein second fastener (19) and described second
Conducting element (9) is threadedly engaged.
24. filter assembly (1) according to claim 23, wherein second fastener (19) is tight by described second
Firmware (19), which rotates, and second conducting element (9) is static is threadedly engaged with second conducting element (9).
25. the filter assembly (1) according to any one of claim 21 to 24, wherein second fastener (19) with
Project through second bonding part (20) engagement of the second connection opening (18) in the metal film (10).
26. filter assembly (1) according to claim 25, wherein a part for the conductive film (10) be arranged in it is described
Between second axially facing contact surface (12) and the 4th axially facing contact surface (21) of second fastener (19).
27. the filter assembly (1) according to claim 25 or 26, wherein second bonding part (20) includes outer spiral shell
Line cylindrical part, and second fastener (19) includes internal thread hole, and wherein described second fastener (19) with
Second bonding part (20) is threadedly engaged.
28. the filter assembly (1) according to any one of claim 1 to 27, wherein first conducting element (8) is logical
It crosses solder, be conductively fixed to the first end by electroconductive binder or by conducting resinl.
29. the filter assembly (1) according to any one of claim 1 to 28, wherein second conducting element passes through
Solder is conductively fixed to the second end by electroconductive binder or by conducting resinl.
30. the filter assembly (1) according to any one of claim 1 to 29, wherein the dielectric rod (7) is that have circle
The hollow cylinder of (22) inside cylindrical hollow.
31. filter assembly (1) according to claim 30, wherein first conducting element (8) and/or the second conduction
Element (9) is provided with the through hole (27,28) axially aligned with the cylindrical hollow interior of the dielectric rod (7) (22).
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/EP2015/078468 WO2017092807A1 (en) | 2015-12-03 | 2015-12-03 | Filter assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108370080A true CN108370080A (en) | 2018-08-03 |
Family
ID=54782710
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201580085098.8A Pending CN108370080A (en) | 2015-12-03 | 2015-12-03 | Filter assembly |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN108370080A (en) |
| WO (1) | WO2017092807A1 (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201985225U (en) * | 2010-12-20 | 2011-09-21 | 深圳市国人射频通信有限公司 | Medium filter |
| CN103151581A (en) * | 2012-11-30 | 2013-06-12 | 摩比天线技术（深圳）有限公司 | Transverse magnetic (TM) mold dielectric filter |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101933193B (en) * | 2008-01-31 | 2013-04-24 | 艾利森电话股份有限公司 | Filter assembly |
| GB201203196D0 (en) * | 2012-02-24 | 2012-04-11 | Radio Design Ltd | Filter assembly and method of manufacture thereof |
-
2015
- 2015-12-03 CN CN201580085098.8A patent/CN108370080A/en active Pending
- 2015-12-03 WO PCT/EP2015/078468 patent/WO2017092807A1/en active Application Filing
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201985225U (en) * | 2010-12-20 | 2011-09-21 | 深圳市国人射频通信有限公司 | Medium filter |
| CN103151581A (en) * | 2012-11-30 | 2013-06-12 | 摩比天线技术（深圳）有限公司 | Transverse magnetic (TM) mold dielectric filter |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2017092807A1 (en) | 2017-06-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8773222B2 (en) | Filter assembly | |
| US6002311A (en) | Dielectric TM mode resonator for RF filters | |
| US6873864B2 (en) | Superconductive filter module, superconductive filter assembly and heat insulating type coaxial cable | |
| US6750739B2 (en) | Resonator and high-frequency filter | |
| US8854160B2 (en) | Dielectric resonator fixed by a pressing metal plate and method of assembly | |
| JP3506104B2 (en) | Resonator device, filter, composite filter device, duplexer, and communication device | |
| GB2353144A (en) | Combline filter | |
| KR101307107B1 (en) | Dielectric Resonator Filter | |
| WO2007009532A1 (en) | Plastic combine filter with metal post to increase heat dissipation | |
| US10840577B2 (en) | Resonator and communications apparatus | |
| JP2010199790A (en) | Mounting structure of dielectric resonator, manufacturing method thereof, and filter device | |
| US20040041661A1 (en) | Dielectric filter, communication apparatus, and method of controlling resonance frequency | |
| KR101217184B1 (en) | Radio frequency filter | |
| EP2482377B1 (en) | RF filter with coupling means for RF signals | |
| KR101101745B1 (en) | Assembly of dielectric resonator with high sensitivity using triple mode | |
| CN108370080A (en) | Filter assembly | |
| EP3200273B1 (en) | Resonator, filter, and communication device | |
| KR101597109B1 (en) | TM mode dielectric resonator | |
| JP5831805B2 (en) | Coaxial resonator device and manufacturing method thereof | |
| KR101468409B1 (en) | Dual mode resonator including the disk with notch and filter using the same | |
| US20120019339A1 (en) | Filter utilizing combination of TE and modified HE mode dielectric resonators | |
| JP2015005876A (en) | Dielectric resonator and dielectric resonator filter | |
| CN114204237B (en) | Small-size medium loading double-frequency filter of little frequency ratio | |
| WO2016198407A1 (en) | Resonator assembly and filter | |
| GB2584786A (en) | Multi-mode Resonator apparatus and method of use thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180803 |