CN207009613U - A kind of frequency modulation 10kW low pass filters - Google Patents
A kind of frequency modulation 10kW low pass filters Download PDFInfo
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- CN207009613U CN207009613U CN201720902697.0U CN201720902697U CN207009613U CN 207009613 U CN207009613 U CN 207009613U CN 201720902697 U CN201720902697 U CN 201720902697U CN 207009613 U CN207009613 U CN 207009613U
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- capacitor board
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- housing
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Abstract
The utility model discloses a kind of frequency modulation 10kW low pass filters, including housing and the input interface and output interface that are arranged on housing, filtering chamber is formed in housing, filtering intracavitary is provided with four pieces of capacitor boards and five inductance bars, described housing includes bottom plate, top plate and side plate, and described input interface is arranged on bottom plate, and described output interface is arranged on top plate, the capacitor board is successively set on the side side plate in housing, and inductance bar connects adjacent capacitor board and input, output interface.It efficiently solves the problem of complicated, cost is high and assembling and setting is difficult existing for the low pass filter of prior art, and filter construction of the present utility model is simple, cost is low and assembling and setting is convenient, has very high practical value.
Description
Technical field
A kind of high-power low pass filter is the utility model is related to, especially a kind of frequency modulation 10kW low pass filters.
Background technology
Low pass filter is the important component of frequency modulation broadcast emission system, and it is high-end for limiting tuned radio frequency
Unwanted emission power, to avoid these unwanted emissions to high band wireless transmitting system（Such as television emission system）It is dry
Disturb.The high-power low pass filter of prior art typically uses coaxial configuration, and its electric capacity, inductance use coaxial configuration, due to
Outer conductor is made using copper pipe, is inserted after the concatenation such as internal inductance, electric capacity in copper pipe, once machining, its structure is with regard to nothing
Method changes adjustment, therefore not only requirement on machining accuracy is high for the low pass filter of this structure, and coaxial inductance and coaxial capacitance
Occupy larger space, so last is sufficiently bulky.Publication date is September in 2013 18, Publication No.
CN203205510U patent document discloses a kind of high-power low pass filter, including strip cassette shell and is connected to shell
Input/output interface on body, is provided with some cavity volumes in housing, and the side wall of cavity volume opposite sides is provided with capacitor board, capacitor board and
Insulating trip is provided between cavity volume side wall, dividing plate is provided with through hole, passes through the conduction through through hole between the capacitor board of dividing plate both sides
Part is connected, and is provided with spiral winding in cavity volume, and the capacitor board of the both ends of spiral winding respectively with cavity volume both sides is connected, described input
Output interface is arranged in the cavity volume side wall of head end and end and is connected with the capacitor board in cavity volume.The low pass filter uses more
Individual cavity, complicated, production cost is high；Capacitor board is fixed on the dividing plate of cavity by the wave filter, because single cavity volume holds
Product is smaller, and inductance and electric capacity lateral connection, assembles and debugs highly difficult in actual production.Further, since its is defeated for lid structure
Enter the both ends that output interface is arranged on housing, therefore need to be connected by elbow when wave filter is horizontally arranged at enclosure top, not only
Cost is added, and have impact on the technical indicator of complete machine.
Utility model content
The utility model for solve prior art low pass filter existing for it is complicated, cost is high and assembling and setting is stranded
The problem of difficult and provide that a kind of simple in construction, cost is low and the convenient frequency modulation 10kW low pass filters of assembling and setting.
The utility model is that concrete technical scheme is used by reaching above-mentioned technical purpose：A kind of frequency modulation 10kW low pass filtereds
Ripple device, including housing and the input interface and output interface that are arranged on housing, filtering chamber are formed in housing, filtering intracavitary is provided with
Capacitor board and inductance bar, described housing include bottom plate, top plate and side plate, and described input interface is arranged on bottom plate, described
Output interface be arranged on top plate, the capacitor board is arranged on the side side plate in housing, the capacitor board include successively
The first capacitor board, the second capacitor board, the 3rd capacitor board and the 4th capacitor board set, is provided with medium between capacitor board and side plate
Piece, the inductance bar include the first inductance bar, the first electric capacity being arranged between the inner wire of input interface and the first capacitor board
The 3rd inductance article between the second inductance article, the second capacitor board and the 3rd capacitor board between plate and the second capacitor board, the 3rd electricity
Hold the 5th inductance between the 4th inductance article and the 4th capacitor board and the inner wire of output interface between plate and the 4th capacitor board
Bar.Traditional coaxial configuration is changed to box structure by the utility model, and such housing can be from side opening, by adjusting electric capacity
Dieelctric sheet thickness between plate and side plate can adjust the size of capacitance, can also change length or the form fine setting of inductance bar
The size of inductance, so that wave filter reaches optimal technical indicator on working frequency range.In addition, the utility model is used electricity
Sense bar is arranged in a cavity with capacitor board, and cavity space is relatively large, facilitates the assembling and adjustment of wave filter；The opposing party
Face, input interface of the present utility model are set directly on the bottom plate of wave filter, so when wave filter is fixed on enclosure top
Directly it can be docked with the output interface of rack；Output interface is arranged on the top plate of wave filter, convenient and antenna transmission system pair
Connect, without being transferred by elbow etc., can not only reduce cost, be also beneficial to improve the technical indicator of complete machine.This practicality is new
The inductance bar at type both ends connects input interface and output interface respectively, is inductance input pattern.Cassette shell of the present utility model
It is easy to process compared with coaxial configuration, and inductance uses plate armature and traditional coaxial knot using circle ring, electric capacity
Structure inductance, electric capacity are compared, and not only volume can be substantially reduced, and convenient processing and debugging, also reduce production cost.
Preferably, housing is rectangle, described capacitor board is rounded or rectangle, linear along the length direction of housing
Arrange, the inductance bar between adjacent two pieces of capacitor boards is obliquely installed.Inductance bar is obliquely installed the length that can shorten housing.
Preferably, capacitor board is fixed by screw and side plate, insulator is provided between screw and capacitor board；Inductance bar
Both ends are spirally connected with capacitor board, input interface and output interface by screw.
Preferably, inductance bar is by single turn cyclic structure of the flat copper with coiling, the projection bag of inductance bar in its axial direction
The complete annular included.Inductance for being subjected to relatively high power, on the premise of enough cross-sectional areas are ensured, use
Inductance bar of the flat copper with coiling has the advantages of processing, fixed and easy to adjust compared with traditional circular section inductance.
Preferably, the circle diameter of the first inductance article is identical with the circle diameter of the 5th inductance article, the second inductance bar
Circle diameter is identical with the circle diameter of the 4th inductance article, and the circle diameter of the 3rd inductance article is straight more than the annulus of the second inductance article
Footpath, the circle diameter of the second inductance bar are more than the circle diameter of the first inductance bar.
Preferably, the size of capacitor board is identical, the dieelctric sheet between the first capacitor board and the 4th capacitor board and side plate its
Thickness is identical, and dieelctric sheet its thickness between the second capacitor board and the 3rd capacitor board and side plate is identical, the first capacitor board and side plate
Between dieelctric sheet thickness be more than dieelctric sheet thickness between the second capacitor board and side plate.
Preferably, input interface and output interface are 80 millimeters of φ coaxial interface, described input interface with it is defeated
Outgoing interface shifts to install.The coaxial interface that 80 millimeters of φ can meet the interface requirement of the transmitting equipment of 10 kw of power grades.
The beneficial effects of the utility model are：It efficiently solves structure existing for the low pass filter of prior art and answered
Miscellaneous, the problem of cost is high and assembling and setting is difficult, filter construction of the present utility model is simple, cost is low and assembling and setting side
Just, there is very high practical value.
Brief description of the drawings
Fig. 1 is a kind of dimensional structure diagram of the present utility model；
Fig. 2 is a kind of electrical schematic diagram of the present utility model；
Fig. 3 is a kind of structure sectional view of the present utility model；
Fig. 4 is a kind of lateral partial structurtes sectional view of the present utility model.
In figure：1. input interface, 2. output interfaces, 3. bottom plates, 4. top plates, 5. side plates, 6. dieelctric sheets, 7. screws, 8. is exhausted
Edge, the capacitor boards of C1. first, the capacitor boards of C2. second, the capacitor boards of C3. the 3rd, the capacitor boards of C4. the 4th, L1. the first inductance bars,
L2. the second inductance bar, the inductance article of L3. the 3rd, the inductance article of L4. the 4th, the inductance article of L5. the 5th.
Embodiment
The embodiment of technical solutions of the utility model is made further below by embodiment, and with reference to accompanying drawing
Explanation.
Embodiment 1
In the embodiment 1 as shown in Fig. 1 Fig. 2, a kind of frequency modulation 10kW low pass filters, include the shell of rectangular parallelepiped structure
Body, described housing are spirally connected and formed by bottom plate 3, top plate 4, the side plate 5 of both sides and the end plate at both ends, 420 millimeters of main body length, wide
It is 130 millimeters, high 130 millimeters.The input interface 1 of wave filter is arranged on bottom plate（See Fig. 3）, the output interface 2 of wave filter sets
On top plate, and input interface shifts to install with output interface at the both ends in shell length direction, input interface and output interface
It is 80 millimeters of φ coaxial interface.A filtering chamber is formed in housing, filtering intracavitary is provided with capacitor board and inductance bar, the electricity
It is rectangular to hold plate, is arranged on being arranged in a linear along the length direction of housing on the side side plate in housing, the capacitor board bag
Include the first capacitor board C1 set gradually, the second capacitor board C2, the 3rd capacitor board C3 and the 4th capacitor board C4, capacitor board and side plate
Between be provided with dieelctric sheet 6, capacitor board is fixed by screw 7 with side plate, and insulator 8 is provided between screw and capacitor board（See Fig. 4）.
The inductance bar includes the first inductance bar L1, the first capacitor board being arranged between the inner wire of input interface and the first capacitor board
The 3rd inductance article L3 between the second inductance article L2, the second capacitor board and the 3rd capacitor board between the second capacitor board, the 3rd
The 5th between the 4th inductance article L4 and the 4th capacitor board and the inner wire of output interface between capacitor board and the 4th capacitor board
Inductance bar L5.Inductance bar is include one of the projection of inductance bar in its axial direction by single turn cyclic structure of the flat copper with coiling
Complete annular, the inductance bar between adjacent two pieces of capacitor boards are obliquely installed, both ends and capacitor board, the input interface of inductance bar
And output interface is spirally connected by screw.
The circle diameter of first inductance article is identical with the circle diameter of the 5th inductance article, the circle diameter of the second inductance bar with
The circle diameter of 4th inductance article is identical, and the circle diameter of the 3rd inductance article is more than the circle diameter of the second inductance article, the second electricity
The circle diameter for feeling bar is more than the circle diameter of the first inductance bar.The annulus of first inductance article and the 5th inductance article in the present embodiment
A diameter of 20 millimeters, the circle diameter of the 3rd inductance article and the 4th inductance article is 50 millimeters, and the circle diameter of the 3rd inductance article is
55 millimeters.
The size of capacitor board is identical, and dieelctric sheet its thickness between the first capacitor board and the 4th capacitor board and side plate is identical,
Dieelctric sheet its thickness between second capacitor board and the 3rd capacitor board and side plate is identical, the medium between the first capacitor board and side plate
Piece thickness is more than the dieelctric sheet thickness between the second capacitor board and side plate.In the present embodiment the first capacitor board and the 4th capacitor board with
Dieelctric sheet thickness between side plate is 3 millimeters, and the dieelctric sheet thickness between the second capacitor board and the 3rd capacitor board and side plate is 1.5
Millimeter, described dieelctric sheet is polyfluortetraethylene plate, and dieelctric sheet is more than capacitor board, to ensure insulating properties.
Embodiment 2
Capacitor board described in embodiment 2 is rounded, and remaining and embodiment 1 are identical.
Traditional coaxial configuration is changed to box structure by the utility model, and such housing can pass through tune from side opening
The dieelctric sheet thickness of section capacitor board and side plate can adjust the size of capacitance, can also change the length of inductance bar（Annulus is straight
Footpath size）Or the size of form trimming inductance, so that wave filter reaches optimal technical indicator on working frequency range.In addition,
The utility model, which uses, is arranged on inductance bar and capacitor board in one cavity, and cavity space is relatively large, facilitates wave filter
Assembling and adjustment；On the other hand, input interface of the present utility model is set directly on the bottom plate of wave filter, so works as filtering
Device can be docked directly when being fixed on enclosure top with the output interface of rack；Output interface is arranged on the top plate of wave filter,
It is convenient to be docked with antenna transmission system, without being transferred by elbow etc., cost can be not only reduced, is also beneficial to improve complete machine
Technical indicator.
In addition to the implementation, in the scope disclosed in claims of the present utility model and specification, this practicality
New technical characteristic or technical data can be reselected and combined, and so as to form new embodiment, these are all these
Art personnel need not carry out that creative work is i.e. achievable, therefore the implementation that these the utility model are not described in
Example also should be regarded as specific embodiment of the utility model and within the scope of protection of the utility model.
Claims (7)
1. a kind of frequency modulation 10kW low pass filters, including housing and the input interface that is arranged on housing（1）With output interface
（2）, housing is interior to form filtering chamber, and filtering intracavitary is provided with capacitor board and inductance bar, it is characterized in that：Described housing includes bottom plate
（3）, top plate（4）With side plate（5）, described input interface is arranged on bottom plate, and described output interface is arranged on top plate, institute
State on the side side plate that capacitor board is arranged in housing, the capacitor board includes the first capacitor board set gradually（C1）, second
Capacitor board（C2）, the 3rd capacitor board（C3）And the 4th capacitor board（C4）, dieelctric sheet is provided between capacitor board and side plate（6）, it is described
Inductance bar includes the first inductance bar being arranged between the inner wire of input interface and the first capacitor board（L1）, the first capacitor board with
The second inductance bar between second capacitor board（L2）, the 3rd inductance article between the second capacitor board and the 3rd capacitor board（L3）, the
The 4th inductance article between three capacitor boards and the 4th capacitor board（L4）And the 4th capacitor board and output interface inner wire between
5th inductance article（L5）.
2. frequency modulation 10kW low pass filters according to claim 1, it is characterised in that described housing is rectangle, described
Capacitor board is rounded or rectangle, be arranged in a linear along the length direction of housing, the inductance bar between adjacent two pieces of capacitor boards inclines
Tiltedly set.
3. frequency modulation 10kW low pass filters according to claim 1, it is characterised in that capacitor board passes through screw（7）With side plate
It is fixed, insulator is provided between screw and capacitor board（8）；The both ends of inductance bar and capacitor board, input interface and output interface are equal
It is spirally connected by screw.
4. frequency modulation 10kW low pass filters according to claim 1, it is characterised in that described inductance bar is by flat copper band
The single turn cyclic structure of coiling, the complete annular that the projection of inductance bar in its axial direction includes.
5. frequency modulation 10kW low pass filters according to claim 4, it is characterised in that the circle diameter of the first inductance bar with
The circle diameter of 5th inductance article is identical, and the circle diameter of the second inductance article is identical with the circle diameter of the 4th inductance article, and the 3rd
The circle diameter of inductance bar is more than the circle diameter of the second inductance bar, and the circle diameter of the second inductance bar is more than the first inductance bar
Circle diameter.
6. frequency modulation 10kW low pass filters according to claim 1, it is characterised in that the size of the capacitor board is identical, the
Dieelctric sheet its thickness between one capacitor board and the 4th capacitor board and side plate is identical, the second capacitor board and the 3rd capacitor board and side plate
Between dieelctric sheet its thickness it is identical, the dieelctric sheet thickness between the first capacitor board and side plate be more than the second capacitor board and side plate it
Between dieelctric sheet thickness.
7. the frequency modulation 10kW low pass filters according to claim any one of 1-6, it is characterised in that input interface and output
Interface is 80 millimeters of φ coaxial interface, and described input interface shifts to install with output interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720902697.0U CN207009613U (en) | 2017-07-24 | 2017-07-24 | A kind of frequency modulation 10kW low pass filters |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720902697.0U CN207009613U (en) | 2017-07-24 | 2017-07-24 | A kind of frequency modulation 10kW low pass filters |
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| Publication Number | Publication Date |
|---|---|
| CN207009613U true CN207009613U (en) | 2018-02-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720902697.0U Expired - Fee Related CN207009613U (en) | 2017-07-24 | 2017-07-24 | A kind of frequency modulation 10kW low pass filters |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113922018A (en) * | 2020-07-09 | 2022-01-11 | 大富科技(安徽)股份有限公司 | High-pass filter and communication equipment |
-
2017
- 2017-07-24 CN CN201720902697.0U patent/CN207009613U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113922018A (en) * | 2020-07-09 | 2022-01-11 | 大富科技(安徽)股份有限公司 | High-pass filter and communication equipment |
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| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180213 |
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| CF01 | Termination of patent right due to non-payment of annual fee |