CN107204503A - RF wave filters - Google Patents
RF wave filters Download PDFInfo
- Publication number
- CN107204503A CN107204503A CN201610157297.1A CN201610157297A CN107204503A CN 107204503 A CN107204503 A CN 107204503A CN 201610157297 A CN201610157297 A CN 201610157297A CN 107204503 A CN107204503 A CN 107204503A
- Authority
- CN
- China
- Prior art keywords
- support
- wall
- wave filters
- compartment
- transmission line
- 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.)
- Granted
Links
Classifications
-
- 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
- H01P1/201—Filters for transverse electromagnetic waves
- H01P1/205—Comb or interdigital filters; Cascaded coaxial cavities
- H01P1/2053—Comb or interdigital filters; Cascaded coaxial cavities the coaxial cavity resonators being disposed parall to each other
-
- 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
Abstract
The present invention relates to a kind of RF wave filters, including housing (C), the wall construction (W) between the bottom (B) of housing and lid (T) defines at least one compartment (CPA1 CPA4) in enclosure interior.The RF wave filters have the special resonator of compartment (R1 R4), and RF wave filters include signal port (SP1) and the RF transmission lines (TL) being connected with signal port, RF transmission lines are set to RF signals being transferred to the compartment (CPA1 CPA4) of RF wave filters.In order to support RF transmission lines, the wall construction (W) of housing (C) includes one or more supporting supports (SU1 SU4, SU11 SU13), the supporting support is bent from the wall of wall construction, and transmission line (TL) is fixed on supporting support by seal (IS).
Description
Technical field
The present invention relates to a kind of RF wave filters.
Background technology
RF wave filters (i.e. radio-frequency filter) are used as and the RF in the base station of such as mobile telephone network
Equipment (such as emitter, receiver or transceiver), particularly connects with the amplifier in RF equipment
The filtering connect and match circuit.
The wave filter of resonator types includes the shell structure with one or more compartments, the compartment
Shape limited by the wall construction of housing.
Typically, the compartment of shell structure can include the inner wire for being attached at the bottom of compartment or cavity
(being referred to as resonator or resonator rod), as the public structure of coaxial resonator, wherein interior lead
Body or resonator and the compartment or cavity of surrounding enjoy a common axis, i.e., coaxial.In metal shell
Compartment forms resonance circuit together with the metallic inner conductor in housing.In more complicated high frequency filter
In, particularly, shell structure includes multiple compartments, and each compartment has independent inner wire or resonance
Device, is consequently formed multiple resonance circuits, by making these resonance circuits suitably intercouple, and obtains institute
The frequency response needed, i.e. stopband and passband.
In RF wave filters, transmission line may be used inside shell structure, transmission line is by RF signals
From the signal port installed in cell structure one end or similar connector be sent to wave filter it is adjacent every
Room.Above-mentioned transmission line needs to be attached on something, and it is known that using fixed to casing of filter
The vertical support arm of bottom, further it is known that the projection on wall of the fabrication stage using shell structure
Thing as transmission line support.Certainly, said structure allow to support transmission line (i.e. it
Install), but from manufacture they or assembling wave filter from the point of view of, this is very laborious.
The content of the invention
It is therefore an object of the present invention to provide a kind of RF wave filters to solve or alleviate above-mentioned ask
Topic.
The purpose of the present invention realizes that the RF wave filters include housing, institute by following RF wave filters
The wall construction stated between the bottom of housing and lid defines at least one compartment in the enclosure interior,
And the RF wave filters have the special resonator of compartment, and the RF wave filters include letter
Number port and the RF transmission lines being connected with the signal port, the RF transmission lines be set to by
RF signals are delivered to the compartment of the RF wave filters, it is characterised in that described in order to support
RF transmission lines, the wall construction of the housing includes one or more supporting supports, the support
Support is bent from the wall of the wall construction, and the transmission line is fixed on the branch by seal
Support support.
It is preferred that, the supporting support bent from wall is located at the edge of the wall.
It is preferred that, the supporting support bent from wall is arranged on the wall so that the support branch
Frame is located at the near top of the resonator at the lid of compartment.
It is preferred that, from wall bend the supporting support resonator free end away from the lid one
Set a distance and position.
It is preferred that, from wall bend the supporting support be located at the RF wave filters the compartment it
Between dividing wall on.
It is preferred that, same wall has at least two bent support supports for the transmission line.
It is preferred that, the supporting support bent from wall is for supporting the main line point from the transmission line
The supporting support of the projection branch gone out.
It is preferred that, the supporting support bent from wall is for supporting the main line point from the transmission line
The supporting support of the free end of the projection branch gone out.
It is preferred that, the supporting support bent from wall is the branch for supporting the main line of the transmission line
Support support.
It is preferred that, same wall has the main line for being used for the transmission line and the projection separated from the main line
The bent support support of branch.
Benefit of the invention is to realize the reliable mount point for transmission line in easily fabricated mode
Or the strong point.
Brief description of the drawings
The present invention is described in more detail with reference to some embodiments for refer to the attached drawing, in accompanying drawing：
Fig. 1 is the top view from the RF wave filters in terms of the direction of the lid of housing；
Fig. 2 is the side view from the RF wave filters in terms of the direction of the long side wall in foremost of housing；
Fig. 3 is the preceding oblique view of the wave filter without lid and foremost side wall；
Fig. 4 shows the wave filter in Fig. 3 with lid and foremost side wall；
Fig. 5 shows the dividing wall of the housing of the supporting support with bending.
Embodiment
Refer to the attached drawing, discloses RF wave filter F, and wave filter F can be used for (all with RF equipment
Such as emitter, receiver, transceiver or amplifier) connect or couple.For example, RF equipment
Can be the radio-cell or module therein in cellular radio network.
Wave filter F has signal port SP1, SP2, can be by the way that wave filter F is connected into antenna
The cable of such as transceiver sets up the connection to the signal port.What is shown in Fig. 3 is used for signal
Wave filter can be connected to installed in the external shell around wave filter by port SP1, SP2 stub cable
Coaxial connector on the wall of body (not shown).
Wave filter includes shell structure C, and the shell structure has wall construction W, below wall construction
Lid T at the top of bottom B and wall construction.Shell structure C (that is, its wall construction W, bottom B
And lid T) be made up of conducting metal, such as scribbling for example improves the silver or other metals of electric conductivity
Copper or aluminium.
The RF wave filters shown in figure be coaxial resonator wave filter, in other words, its have one or
Multiple compartment CPA1-CPA4 and the special inner wire or humorous of respective compartment in the compartment
Shake device R1-R4, i.e. resonator rod, and these resonators are linear, i.e., with housing C compartment
Bearing of trend is coaxial, therefore Vertical Square of the resonator between lid and bottom is upwardly extended.Housing
Each compartment CPA1-CPA4 and its resonator R1-R4 forms resonance circuit together, and adjacent
Resonance circuit forms the wave filter with required attenuation curve together.For example, wave filter can be band logical
Wave filter.Resonator R1-R4 is fixed on to housing C bottom B using screw.
Resonator R1-R4 bottom (i.e. the base section of resonator in Fig. 1) is for housing C
Bottom B short circuit, while the bottom as resonator R1-R4 publicly.In Fig. 1, resonance
Device R1-R4 top section is so-called free end, and the free end (is particularly and shell with housing C
The lid T of body) it is electrically isolated.In the example according to Fig. 1, the length of resonator is about wavelength
A quarter.
Being included in the wall construction in housing C (it is therefore positioned between bottom B and lid T) includes
Dividing wall W1-W3 between side wall S1-S2, end wall E1-E2 and compartment.Therefore, four compartment shell
Body structure have be located at three dividing wall W1 between compartment CPA1, CPA2, CPA3, CPA4,
W2, W3, the effect of dividing wall is by preventing the excessive electricity between resonator R1-R4 free end
Hold coupling to be spaced apart by compartment and therefore by resonance circuit.In fig. 2, housing C wall knot
The structure W long side wall S2 in foremost from observer recently, therefore is shown in broken lines behind the wall S2 of side
The structure seen.
Filter includes the first signal port SP1 at the end wall E1 of housing and is connected to
RF transmission lines TL, the RF transmission line TL for stating the first signal port is set to RF signals being delivered to
The compartment CPA1-CPA4 of RF wave filters.At the second end wall E2 of wave filter, wave filter includes
Secondary signal port SP2.First signal port SP1 may be coupled to RX/TX equipment and (receive and dispatch
Machine), it is especially connected to amplifier included in RX/TX equipment.Secondary signal port SP2 can
To be connected to antenna cable.The other end (i.e. right hand side in Fig. 3) of transmission line is connected to the second letter
Number port SP2.
Transmission line TL is supported on housing C wall construction.In order to support RF transmission line TL, shell
Body C wall construction includes supporting support SU1-SU4, and the supporting support is curved from wall construction W wall
Song, and transmission line TL is fixed to supporting support by seal IS1-IS4.Fig. 3 is shown
The supporting support SU1-SU4 bent from wall, the supporting support is used for the main line from transmission line TL
The projection branch TL1-TL4 that ML is separated.Particularly, because the free end of projection branch is to that may lead
Cause wave filter frequency response change vibrations it is most sensitive, so from wall bend supporting support (such as
SU1-SU4) it is support branch for supporting projection branch TL1-TL4 that the main line from transmission line separates
Frame.In Fig. 3, the supporting support SU4 of bending most of projection branch TL4 in transmission line TL
It is followed by sightless.
The bent support support SU11-SU13 bent from wall is used for the main line for supporting transmission line TL
ML.Transmission line TL (particularly its main line ML) is fixed to institute by seal IS11-IS13
The bent support support SU11-SU13 stated.
From transmission line TL main line ML extension and close to resonator R1-R4 projection branch
TL1-TL4 can be considered as coupling projection, by the coupling projection in resonator R1-R4 and transmission line
Capacitance Coupled occurs between TL.In order to strengthen and adjust Capacitance Coupled, transmission line TL projection branch
TL1-TL4 includes coupling part CP1-CP4, and the coupling part can be for example flexible plate surface,
But can also be other shapes.Stiffness of coupling between resonator R1-R4 and transmission line TL is by coupling
The influence of the conjunction portion CP1-CP4 distance of size and the coupling part away from resonator.Coupling part
CP1-CP4 is most preferably as shown in Figure 3.
For the coupling between resonator R1-R4 and transmission line TL, transmission line is especially including in
Coupling branch TL1-TL4 in TL and the coupling between the resonator R1-R4 of electric capacity to be held, coupling
The coupling part CP1-CP4 closed in branch (i.e. projection branch TL1-TL4) will not conductive contact or electricity
Contact the resonator or housing C (i.e. the main body of wave filter) of wave filter.
It is noted that in one embodiment, the supporting support (such as SU3) bent from wall
Positioned at the edge of wall because its there than closer to the middle part of wall when be easier shaping.
In order to be easy to set up and shelve transmission line TL at appropriate height, the branch that will be bent from wall
Support support (SU3 in such as Fig. 2,3 and 5) is arranged on wall W3 so that it is in compartment
The near top positioned at resonator at lid T (such as compartment CPA3 top) place.In this feelings
Under condition, the supporting support (such as SU3) from wall bending is in resonator (such as R3) free end
(in other words, capacitance terminal) place is positioned away from lid T certain distances, so that transmission line TL be placed in
The same area.
It is noted that from wall bend supporting support (such as SU2) be located at RF wave filters every
On dividing wall W1 between room (such as CPA1, CPA2).The supporting support SU3 bent from wall
On dividing wall W3 between compartment CPA3, CPA4 of RF wave filters.
The bent support support SU11 bent from wall is located between compartment CPA1, CPA2 of wave filter
Dividing wall W1 on.From wall bend bent support support SU12 be located at wave filter compartment CPA2,
On dividing wall W2 between CPA3.The bent support support SU13 bent from wall is located at wave filter
Compartment CPA3, CPA4 between dividing wall W3 on.
With reference to above-mentioned, in one embodiment, same wall (such as W1, W3), which has, to be used for
Transmission line TL at least two bent support supports.In one embodiment, same wall is (such as
Dividing wall W1, W3) have the main line ML for being used for transmission line and the projection branch separated from main line (all
Such as TL2, TL3) bent support support.It is noted that wall (such as dividing wall W1) has
There is the bent support support SU2 of projection branch TL2 for transmission line and for transmission line TL's
Main line ML bent support support SU11.Accordingly, wall (such as dividing wall W3) has and is used for
The projection branch TL3 of transmission line bent support support SU3 and the main line for transmission line TL
ML bent support support SU13.
With reference to Fig. 5, it is arranged on appropriate between housing C long side wall S1, S2 wall pieces will be isolated
Before position, supporting support (such as SU3) is bent towards into isolation wall pieces and is easiest to.Wait turn into every
Plate from wall W3 is provided with the groove determined by supporting support SU3 width, and the groove causes
Supporting support can be bent.Supporting support is substantially curved directly relative to the plane where isolation wall pieces surface
The angle at angle, i.e., approximate 90 degree.Supporting support SU3 surface plane is parallel with transmission line TL to be
Favourable, it will be simplest to be fixed in this case by seal IS3.Seal
IS1-IS4, IS11-IS13 can be such as plastic screws, for the plastic screw, supporting support
With thread jack THR or similar correspondence portion.
Housing C and its construction element B, T, W, W1-W3 are made up of conducting metal, such as apply
There is for example silver-colored copper or aluminium.
The thickness of wall is more preferably at least 0.5mm, more preferably at least 1mm.
It will be apparent to one skilled in the art that with advances in technology, of the invention is basic
Concept can be implemented by many different modes.Therefore, the present invention and embodiments thereof be not by above-mentioned
The limitation of embodiment, but can change within the scope of the claims.
Claims (10)
1. a kind of RF wave filters, including housing (C), the bottom (B) of the housing and lid (T)
Between wall construction (W) define at least one compartment in the enclosure interior
, and the RF wave filters have the special resonator of compartment (CPA1-CPA4)
(R1-R4), and the RF wave filters include signal port (SP1) and with the letter
The RF transmission lines (TL) of number port connection, the RF transmission lines are set to pass RF signals
It is delivered to the compartment (CPA1-CPA4) of the RF wave filters, it is characterised in that in order to
The RF transmission lines are supported, the wall construction (W) of the housing (C) includes one
Or multiple supporting supports (SU1-SU4, SU11-SU13), the supporting support is from the wall
The wall of structure is bent, and the transmission line (TL) is fixed on by seal (IS)
The supporting support.
2. RF wave filters according to claim 1, it is characterised in that the branch bent from wall
Support the edge that support (SU1-SU4, SU11-SU13) is located at the wall.
3. RF wave filters according to claim 1, it is characterised in that the branch bent from wall
Support support (SU1-SU4, SU11-SU13) is arranged on the wall so that the support branch
Frame is located at the near top of the resonator at the lid of compartment.
4. RF wave filters according to any one of claim 1 to 3, it is characterised in that from
The supporting support (SU1-SU4, SU11-SU13) of wall bending is at resonator (R1-R4)
Free end positioned away from the lid (T) certain distance.
5. RF wave filters according to any one of claim 1 to 3, it is characterised in that from
The supporting support (SU1-SU4, SU11-SU13) of wall bending is filtered positioned at the RF
On dividing wall (W1, W2, W3) between the compartment of device.
6. RF wave filters according to any one of claim 1 to 3, it is characterised in that same
One wall (W1) has at least two bent support supports for the transmission line (TL)
(SU2、SU11)。
7. RF wave filters according to any one of claim 1 to 3, it is characterised in that from
The supporting support (SU1-SU4) of wall bending is to be used to support from the transmission line (TL)
The supporting support of projection branch (TL1-TL4) that separates of main line (ML).
8. RF wave filters according to claim 7, it is characterised in that the branch bent from wall
Support support (SU1-SU4) is to be used to support the main line (ML) from the transmission line (TL)
The supporting support of the free end of the projection branch (TL1-TL4) separated.
9. RF wave filters according to any one of claim 1 to 3, it is characterised in that from
The supporting support (SU11-SU13) of wall bending is to be used to support the transmission line (TL)
Main line (ML) supporting support.
10. RF wave filters according to claim 6, it is characterised in that same wall (W1) tool
Have for the main line (ML) of the transmission line and separated from the main line projection branch (TL2,
TL3 bent support support (SU2, SU11)).
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610157297.1A CN107204503B (en) | 2016-03-18 | 2016-03-18 | RF filter |
| PCT/FI2017/050179 WO2017158241A1 (en) | 2016-03-18 | 2017-03-17 | Rf filter |
| EP17729173.9A EP3430673A1 (en) | 2016-03-18 | 2017-03-17 | Rf filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610157297.1A CN107204503B (en) | 2016-03-18 | 2016-03-18 | RF filter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107204503A true CN107204503A (en) | 2017-09-26 |
| CN107204503B CN107204503B (en) | 2020-05-05 |
Family
ID=59034803
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610157297.1A Expired - Fee Related CN107204503B (en) | 2016-03-18 | 2016-03-18 | RF filter |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP3430673A1 (en) |
| CN (1) | CN107204503B (en) |
| WO (1) | WO2017158241A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110729539A (en) * | 2019-10-28 | 2020-01-24 | 深圳市国人射频通信有限公司 | Cavity filter |
| CN111384547A (en) * | 2018-12-29 | 2020-07-07 | 深圳市大富科技股份有限公司 | Filter applied to 5G communication system and communication equipment |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4661998A (en) * | 1983-09-22 | 1987-04-28 | Matsushita Electric Industrial Co. Ltd. | Double superheterodyne tuner |
| CN1717838A (en) * | 2003-03-18 | 2006-01-04 | 菲尔特朗尼克科姆特克有限公司 | Resonator filter |
| CN1950971A (en) * | 2004-05-12 | 2007-04-18 | 菲尔特朗尼克科姆特克有限公司 | Band stop filter |
| US20090237185A1 (en) * | 2008-03-04 | 2009-09-24 | Nokia Siemens Networks Oy | Variable radio frequency band filter |
| US20150280298A1 (en) * | 2012-10-23 | 2015-10-01 | Nec Corporation | Tunable Band-Pass Filter |
| CN107851878A (en) * | 2015-07-20 | 2018-03-27 | 通玉科技有限公司 | Manufacture method, part and the RF wave filters of the part for RF wave filters |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105229847B (en) * | 2013-06-25 | 2018-07-17 | 英特尔公司 | Coupled arrangement between cavity filter resonator |
-
2016
- 2016-03-18 CN CN201610157297.1A patent/CN107204503B/en not_active Expired - Fee Related
-
2017
- 2017-03-17 EP EP17729173.9A patent/EP3430673A1/en not_active Withdrawn
- 2017-03-17 WO PCT/FI2017/050179 patent/WO2017158241A1/en active Application Filing
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4661998A (en) * | 1983-09-22 | 1987-04-28 | Matsushita Electric Industrial Co. Ltd. | Double superheterodyne tuner |
| CN1717838A (en) * | 2003-03-18 | 2006-01-04 | 菲尔特朗尼克科姆特克有限公司 | Resonator filter |
| CN1950971A (en) * | 2004-05-12 | 2007-04-18 | 菲尔特朗尼克科姆特克有限公司 | Band stop filter |
| US20090237185A1 (en) * | 2008-03-04 | 2009-09-24 | Nokia Siemens Networks Oy | Variable radio frequency band filter |
| US20150280298A1 (en) * | 2012-10-23 | 2015-10-01 | Nec Corporation | Tunable Band-Pass Filter |
| CN107851878A (en) * | 2015-07-20 | 2018-03-27 | 通玉科技有限公司 | Manufacture method, part and the RF wave filters of the part for RF wave filters |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111384547A (en) * | 2018-12-29 | 2020-07-07 | 深圳市大富科技股份有限公司 | Filter applied to 5G communication system and communication equipment |
| CN111384547B (en) * | 2018-12-29 | 2022-07-12 | 大富科技(安徽)股份有限公司 | Filter applied to 5G communication system and communication equipment |
| CN110729539A (en) * | 2019-10-28 | 2020-01-24 | 深圳市国人射频通信有限公司 | Cavity filter |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107204503B (en) | 2020-05-05 |
| EP3430673A1 (en) | 2019-01-23 |
| WO2017158241A1 (en) | 2017-09-21 |
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