CN108370076A - The cross coupling device and filter of filter - Google Patents
The cross coupling device and filter of filter Download PDFInfo
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- CN108370076A CN108370076A CN201580085095.4A CN201580085095A CN108370076A CN 108370076 A CN108370076 A CN 108370076A CN 201580085095 A CN201580085095 A CN 201580085095A CN 108370076 A CN108370076 A CN 108370076A
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- cross
- fixed block
- filter
- coupling device
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- 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
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Abstract
An embodiment of the present invention provides a kind of cross coupling device of filter and filters.The cross coupling device of the filter includes：Fixed block for cross-linked cross-couplings bar and for fixing cross-couplings bar, the opening being arranged on isolation bar between the first chamber and the second chamber that cross coupling device is used in Embedded Filter, the first side of fixed block is set to be located in the first chamber, the second side of fixed block is located in the second chamber.Opening in the embodiment of the present invention by being arranged on the isolation bar between two chambers by cross coupling device Embedded Filter, reduce the useful space that cross coupling device occupies in chamber, so as to improve the performance of filter, while being conducive to the Miniaturization Design of filter.
Description
The present invention relates to the communications field more particularly to the cross coupling devices and filter of filter.
Generally there are two kinds of transmission paths in the energy transmission of filter, a kind of coupling path between adjacent chambers, another cross-coupling path between non-adjacent chamber, the cross-coupling path is able to ascend the Out-of-band rejection of filter, and cross-coupling path can be realized by setting cross coupling device.Cavity transverse magnetic (Transverse Magnetic at present, abbreviation TM) mould dielectric filter cross coupling device structure it is more complicated, need to be installed and fixed cross coupling device by being separately fixed device on the cavity of TM mould dielectric filter.As shown in Figure 1, in the implementation of TM mould dielectric filter, in the fixing lug boss 305 and 307 for needing to process installation cross-coupling piece respectively in cross-linked resonant cavity, the cross-coupling piece 304 formed by 3041,3042 and 3043 is fixed on boss 305 and 307 respectively by screw 306 again, wherein the installation base 305 and 307 of screw protrudes above a part of structure in cavity to support cross-coupling piece 304.Since the fixation device (i.e. boss 305 and 307) occupies the more effective use space of cavity, the performance of resonator is caused to decline, while being also unfavorable for filter miniaturization.
Summary of the invention
The embodiment of the invention provides a kind of cross coupling device of filter and filters, can be improved the performance of filter, while being conducive to the Miniaturization Design of filter.
First aspect, provide a kind of cross coupling device of filter, it include: the fixed block for cross-linked cross-coupling bar and for fixing the cross-coupling bar, the opening that the cross coupling device is arranged on the isolation bar between the first chamber and the second chamber in Embedded Filter, it is located at the first side of the fixed block in first chamber, second side of the fixed block is located in second chamber.
In the embodiment of the present invention, pass through the opening being arranged on the isolation bar between two chambers by cross coupling device Embedded Filter, the useful space that cross coupling device occupies in chamber is reduced, so as to improve the performance of filter, while being conducive to the Miniaturization Design of filter.
In addition, since the cross coupling structure of the embodiment of the present invention is not necessarily to the processing in intracavitary the carry out boss and threaded hole of filter, additionally it is possible to reduce processing technology difficulty.Moreover, the intersection coupling of the embodiment of the present invention
The opening set by being embedded in isolation bar between the two chambers is attached together, can flexibly be separated with cavity.
With reference to first aspect, in the first possible implementation, fluted or hole is set on the fixed block, the cross-coupling bar runs through the fixed block by the groove or hole, the cross-coupling bar stretches out after preset first length in the first side of the fixed block on first direction bending the first side that inflection makes first end be fixed on the fixed block again, after preset second length of second side that the cross-coupling bar stretches out the fixed block in second direction bending second side that inflection makes second end be fixed on the fixed block again opposite to the first direction.
With reference to first aspect or the first possible implementation, in the second possible implementation, fixation hole is respectively set in first side of the fixed block and second side, the fixation hole that the first end of the cross-coupling bar is inserted on first side is fixed, and the fixation hole that the second end of the cross-coupling bar is inserted into described second side is fixed.
Optionally, the fixation hole on the end and fixed block of cross-coupling bar can be fixed by welding.
It in the embodiment of the present invention, is fixed by the fixation hole that the end of cross-coupling bar is inserted on fixed block, avoids and be fixed using other mounting device (such as screw), save material, reduce costs, and improve assembly efficiency.
With reference to first aspect or the first or second of possible implementation, in the third possible implementation, on the fixed block be provided with position limiting structure at at least side position in two side positions of the isolation bar face of the opening and be fixed.
In the embodiment of the present invention, by the way that position limiting structure is arranged on fixed block, preferably fixed block and isolation bar can be fixed.
Second aspect provides a kind of filter, comprising: has the cavity of multiple chambers, is provided with the cross coupling device of filter described in first aspect or any of the above-described kind of possible implementation in the multiple chamber between at least two chambers.
In conjunction with second aspect, in the first possible implementation of the second aspect, opening is set, the cross coupling device is embedded in the opening on the isolation bar between described two chambers.
Optionally, the filter is TM mould dielectric filter.
Fig. 1 is the schematic diagram of the cross coupling device in filter in the prior art；
Fig. 2 is the structural schematic diagram according to the cross coupling device of the filter of the embodiment of the present invention；
Fig. 3 is the perspective schematic view according to the cross coupling device of the filter of the embodiment of the present invention；
Fig. 4 is the perspective schematic view according to the fixed block of the cross coupling device of the filter of the embodiment of the present invention；
Fig. 5 is the schematic diagram according to the cross-coupling bar of the cross coupling device of the filter of the embodiment of the present invention；
Fig. 6 is the perspective schematic view according to the filter of the embodiment of the present invention.
Fig. 7 is the schematic plan according to the filter of the embodiment of the present invention.
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention is described.
Fig. 2 show the structural schematic diagram of the cross coupling device 200 of the filter of the embodiment of the present invention.Fig. 3 is the perspective schematic view according to the cross coupling device 200 of the filter of the embodiment of the present invention.As shown in Figure 2 or Figure 3, cross coupling device 200 includes the fixed block 220 for cross-linked cross-coupling bar 210 and for fixing cross-coupling bar 210.Cross-coupling bar 210 and fixed block 220 can use metal material, and the metal material of use can be the same or different, and the embodiment of the present invention does not limit this.
It should be noted that cross-coupling bar 210 and fixed block 220 can also use the material of plating metal on surface, the embodiment of the present invention is not construed as limiting its internal material, such as internal material can be metal, or nonmetallic.
For example, the metal material that cross-coupling bar 210 uses can be copper electroplate, the metal material that fixed block 220 uses can be silver-plated for aluminium surface.
As shown in Figures 2 to 4, fluted 221 are arranged on fixed block 220, cross-coupling bar 210 can run through fixed block 220 by groove 221.But the embodiment of the present invention does not limit this, and hole can also be arranged on fixed block 220, and fixed block 210 can run through fixed block 220 by hole.
Cross-coupling bar 210 stretches out after the preset length in side of fixed block 220 that inflection is fixed on one end on the side of fixed block 220 again to first direction bending, and cross-coupling bar 210 stretches out the preset length in the other side of fixed block 220, and inflection is fixed on the other end on the other side of fixed block again for opposite with first direction second direction bending backward.
The direction that cross-coupling bar 210 stretches out fixed block 220 is the direction far from fixed block 220, and the direction of inflection is proximate to the direction of fixed block 220.In other words, the direction of inflection can stretch out the contrary of fixed block 220 with cross-coupling bar 210.It is understood that can be it is in a plane on the contrary,
It is also possible to the opposite of three-dimensional.
The part that cross-coupling bar 210 stretches out 220 two sides of fixed block respectively can be with U-shaped bending structure, as shown in Figure 2 or Figure 3.The embodiment of the present invention does not limit the angle of bending place in U-shaped bending structure, such as can roll over for quarter bend, or fillet bending.
First direction and second direction can be the opposite direction on same plane, the opposite direction being also possible in Different Plane.In other words, cross-coupling bar 210 can be planar structure, or three-dimensional structure, the embodiment of the present invention are not construed as limiting this.
Optionally, cross-coupling bar 210 runs through fixed block 220 along third direction, and wherein third direction is respectively perpendicular with first direction and second direction.
At this point, cross-coupling bar 210 is S-type, as shown in Figure 5.
It should be noted that cross-coupling bar 210 can be cylindric, or flat column can also be sheet.
As shown in fig. 6, the opening that cross coupling device 200 is arranged on the isolation bar 300 between two chambers 100 in Embedded Filter, is located at two sides fixed with cross-coupling bar 210 on fixed block 220 in two chambers 100, Fig. 7 is schematical top view.It should be understood that illustrating only two chambers of installation cross coupling device 200 in Fig. 6 and Fig. 7, filter can also include other chambers.
Wherein isolation bar 300 is for being isolated two chambers 100.Isolation bar 300 can use metal material, such as aluminium.In the embodiment of the present invention, in order to which cross coupling device to be embedded on isolation bar 300, opening can be set, on isolation bar 300 so that cross coupling device 200 is embedded in the opening.
Wherein, the height of fixed block 220 can be identical as the height of isolation bar 300, and the height of the opening of isolation bar 300 is identical as the height of isolation bar 300 at this time.Alternatively, the height of fixed block 220 is less than the height of isolation bar, opening is set in the top half of isolation bar 300 at this time, and the height of opening is identical as the height of fixed block 220.
The shape of fixed block 220 is not limited in the embodiment of the present invention, as long as fixed block can be embedded in the opening being arranged on the isolation bar between two chambers.For example, fixed block 220 can be cuboid, or cylindrical body, Elliptic Cylinder etc..It should be understood that the shape and size for the opening being arranged on isolation bar can be adapted with the geomery of fixed block 220.
In the embodiment of the present invention, by the way that opening is arranged on isolation bar between the two chambers, the fixed block for being used to fix cross-coupling bar in cross coupling device is embedded in the opening of the isolation bar of two chambers, reduce the useful space that cross coupling device occupies in chamber, so as to improve the performance of filter, while being conducive to the Miniaturization Design of filter.
In addition, since the cross coupling structure of the embodiment of the present invention is not necessarily to the processing in intracavitary the carry out installation base and threaded hole of filter, additionally it is possible to reduce processing technology difficulty.Moreover, the opening of the isolation bar of the cross coupling device insertion of the embodiment of the present invention between the two chambers, is fixed without using additional fixing element (such as screw), simple for structure, assembly is simple, can flexibly separate with cavity.
And, it can be by adjusting the length adjustment stiffness of coupling of cross-coupling bar 210, since cross coupling device 200 is embedded on isolation bar 300, it is fixed without additional fixing element (such as screw), therefore it can flexibly be separated with the cavity of filter, make it easy to the power of adjustment coupling.For example, can be the cross coupling device with different cross-coupling pole lengths by the cross coupling device integral replacing in filter.Alternatively, the cross-coupling bar in cross coupling device can also be changed to the cross-coupling bar of different length.
Resonator 101 is provided in chamber 100.
Optionally, fixation hole 222 can also be respectively set in two sides fixed with cross-coupling bar 210 on fixed block 220, and the both ends of cross-coupling bar 210 are inserted into two fixation holes 222 respectively and are fixed.
Fixation hole 222 for fixing cross-coupling bar 210, the embodiment of the present invention to the depth of fixation hole 222, location and shape without limitation.
Optionally, the end of cross-coupling bar 210 can be fixed by welding with the fixation hole 222 on fixed block 220.The end of cross-coupling bar 210 can also be directly fixed by welding with fixed block 220, it is not limited in the embodiment of the present invention.
Stiffness of coupling can be adjusted by replacement cross coupling device at this time.For example, taking out cross coupling device from filter when needing to adjust stiffness of coupling, and the different cross coupling device of another cross-coupling pole length is installed.
It should be understood that the end of cross-coupling bar 210 can also be fixed using other dismountable modes with the fixation hole 222 on fixed block 220.Stiffness of coupling can be modulated by replacement cross-coupling bar at this time.
Optionally, on fixed block 220 be provided with position limiting structure at at least side position in two side positions of 300 face of isolation bar of opening and be fixed.
The present invention is implemented to position limiting structure without limitation, for example, position limiting structure can be limiting slot 223 shown in Fig. 2 to Fig. 4, it can also be other position limiting structures that fixed block 220 and isolation bar 300 can be fixed.
For example, the width of limiting slot 223 can be greater than or equal to the thickness of isolation bar 300.In this way, isolation bar 300 can be stuck in limiting slot 223 by limiting slot 223, so that cross coupling device 200
In fixed block 220 can be preferably fixed with isolation bar 300.
Another embodiment of the present invention additionally provides a kind of filter, which includes: the cavity with multiple chambers, is provided with cross coupling device 200 according to an embodiment of the present invention in multiple chambers between at least two chambers.
Optionally, opening is set on the isolation bar between two chambers, and cross coupling device 200 is embedded in the opening.
Optionally, which is TM mould dielectric filter.But the embodiment of the present invention does not limit this, for example, the filter may be transverse electric field (Transverse Electric, abbreviation TE) mould dielectric filter.
The above is only the preferred embodiments of technical solution of the present invention, are not intended to limit the scope of the present invention.All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention.
Claims (6)
- A kind of cross coupling device of filter characterized by comprisingFixed block for cross-linked cross-coupling bar and for fixing the cross-coupling bar,The opening that the cross coupling device is arranged on the isolation bar in Embedded Filter between the first chamber and the second chamber, is located at the first side of the fixed block in first chamber, second side of the fixed block is located in second chamber.
- Cross coupling device according to claim 1, which is characterized in thatFluted or hole is set on the fixed block, the cross-coupling bar runs through the fixed block by the groove or hole, the cross-coupling bar stretches out after preset first length in the first side of the fixed block on first direction bending the first side that inflection makes first end be fixed on the fixed block again, after preset second length of second side that the cross-coupling bar stretches out the fixed block in second direction bending second side that inflection makes second end be fixed on the fixed block again opposite to the first direction.
- Cross coupling device according to claim 1 or 2, it is characterized in that, fixation hole is respectively set in first side of the fixed block and second side, the fixation hole that the first end of the cross-coupling bar is inserted on first side is fixed, and the fixation hole that the second end of the cross-coupling bar is inserted into described second side is fixed.
- Cross coupling device as claimed in any of claims 1 to 3, which is characterized in that on the fixed block be provided with position limiting structure at at least side position in two side positions of the isolation bar face of the opening and be fixed.
- A kind of filter characterized by comprisingCavity with multiple chambers is provided with cross coupling device described in any one of the claims 1 to 4 between at least two chambers in the multiple chamber.
- Filter according to claim 5, which is characterized in that opening is set on the isolation bar between described two chambers, and the cross coupling device is embedded in the opening.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2015/096708 WO2017096534A1 (en) | 2015-12-08 | 2015-12-08 | Cross-coupling device for filters, and filter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108370076A true CN108370076A (en) | 2018-08-03 |
| CN108370076B CN108370076B (en) | 2020-07-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201580085095.4A Active CN108370076B (en) | 2015-12-08 | 2015-12-08 | Cross coupling device of filter and filter |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN108370076B (en) |
| WO (1) | WO2017096534A1 (en) |
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| CN103050752B (en) * | 2009-08-11 | 2016-06-01 | 京信通信系统（中国）有限公司 | Cavity medium filter and Out-of-band rejection method thereof |
| CN201732855U (en) * | 2010-05-18 | 2011-02-02 | 摩比天线技术（深圳）有限公司 | Coaxial cavity filter |
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- 2015-12-08 CN CN201580085095.4A patent/CN108370076B/en active Active
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| CN200947460Y (en) * | 2006-06-29 | 2007-09-12 | 摩比天线技术（深圳）有限公司 | Coupling structure between coaxial cavity resonators |
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| WO2009067056A1 (en) * | 2007-11-20 | 2009-05-28 | Telefonaktiebolaget Lm Ericsson (Publ) | A filter for use in a wireless communications network |
| CN201266659Y (en) * | 2008-08-07 | 2009-07-01 | 武汉凡谷电子技术股份有限公司 | Combined sheet capacitance cross coupling device |
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Also Published As
| Publication number | Publication date |
|---|---|
| WO2017096534A1 (en) | 2017-06-15 |
| CN108370076B (en) | 2020-07-07 |
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