CN206992280U - A kind of split type power combiners of frequency modulation 5kW - Google Patents
A kind of split type power combiners of frequency modulation 5kW Download PDFInfo
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- CN206992280U CN206992280U CN201720873575.3U CN201720873575U CN206992280U CN 206992280 U CN206992280 U CN 206992280U CN 201720873575 U CN201720873575 U CN 201720873575U CN 206992280 U CN206992280 U CN 206992280U
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- box
- conductor
- suspension
- frequency modulation
- split type
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Abstract
The utility model discloses a kind of split type power combiners of frequency modulation 5kW, including synthesis box and load tray, the box body of synthesis box is provided with three input interfaces and an output interface, three quarter-wave circular suspension conductors are provided with box body side by side, one end of three suspension conductors is connected with each other and connected with the inner wire of output interface, inner wire of three suspension conductor other ends respectively with three input interfaces is connected, and synthesizes and three connecting interfaces in parallel with input interface are additionally provided with the box body of box；Three load resistances are provided with the box body of load tray.It efficiently solve prior art frequency modulation power synthesizer processing difficulties, cost be high and bulky problem, the split type power combiners of frequency modulation 5kW of the present utility model are easy to process, small volume and cost are low, have very high practical value.
Description
Technical field
A kind of power combiner is the utility model is related to, it is especially a kind of to be applied to fm band digital audio broadcasting transmitting
The split type power combiners of frequency modulation 5kW of machine.
Background technology
Power combiner is the core component of fm band digital audio broadcasting emitter, in existing high-power transmitting
It is widely used in the power combing of machine.The high-power transmitter of prior art is typically by power divider by prime
The power output of power amplifier is distributed into multichannel, drives multiple final power amplifiers respectively, then again by multiple final stage work(
The power output of rate amplifier is synthesized by power combiner, obtains required big power output.Power combiner has a variety of
Way of realization, but under powerful operating mode, due to being limited by working frequency and modular construction size, many synthesis modes are real
It is difficult to use on border.It is high that publication date is on April 21st, 2010, Publication No. CN201440450U patent document discloses one kind
Frequency power synthesizer, a kind of high-frequency high-power synthesizer, including multiple input interfaces and an output interface are disclosed, it is described
High-frequency high-power synthesizer housing be conductor composition box structure, multipath electric length is provided with box body equivalent to four points
One of operation wavelength tape conductor, one end of the tape conductor is connected with each other and connects the inner wire of output interface, the other end
Respectively high power load is connected with an input interface and by A coaxial line of the electrical length equivalent to a quarter operation wavelength
And one electrical length equivalent to the B coaxial lines of a quarter operation wavelength, the other ends of all B coaxial lines is connected with each other.But should
Synthesizer, as synthesis unit, is relatively more suitable for TV metric wave high section or decimeter range uses, in fm band using strip line
In use, problems be present, first, the strip line of vertical bar shape is in fm band, its electrical length is longer, therefore the length of synthesizer
Degree is very long；If second, using the strip line of S-shaped bending, monoblock copper coin linear cutter is needed, production cost is very high；Third,
The edge effect of strip line is obvious, easily causes electrical breakdown in the case of high power air medium, in order to avoid this
The appearance of situation, it is typically only capable to increase the volume of synthesizer.Fourth, radiator is placed in below whole synthesizer by the synthesizer, make
It is larger to obtain the thickness of synthesizer, is unfavorable for arrangement of the synthesizer in complete machine cabinet.
Utility model content
The utility model is above-mentioned technical problem existing for the existing synthesizer of solution, there is provided one kind is easy to process, cost is low
And the split type power combiners of frequency modulation 5kW easily arranged.
The utility model is that concrete technical scheme is used by reaching above-mentioned technical purpose：A kind of frequency modulation 5kW is split type
Power combiner, including flat structure synthesis box and with synthesize load tray of the box by cable connection, it is described synthesis box box
Body is provided with three input interfaces and an output interface, synthesize in the box body of box be provided with side by side three electrical lengths be four/
The suspension conductor of one operation wavelength, suspends the circular in cross-section of conductor, one end of three suspension conductors be connected with each other and with it is defeated
The inner wire connection of outgoing interface, inner wire of three suspension conductor other ends respectively with three input interfaces are connected, and synthesize box
Three connecting interfaces in parallel with input interface are additionally provided with box body；Described load tray is flat structure, the box of load tray
Be provided with three load resistances in vivo, each load resistance by electrical length for the connecting cable of a quarter operation wavelength and
One input interface is connected, and the balance electricity that an electrical length is a quarter operation wavelength is also associated with each load resistance
Cable, the other end of balanced cable are connected with each other.Synthesizer of the present utility model is using the synthesis box being separately independently arranged and load
Box, the synthesis box being provided separately and load tray are flat structure, are advantageous to be mounted in the side wall of rack, so as to reduce
Influence of the synthesizer of integrative-structure to rack integral layout structure, it can avoid load tray can caused heat pairing in addition
Into the influence of box, be advantageous to complete machine heat dissipation design.The utility model suspends the circular in cross-section of conductor, changes prior art
The strip line or microstrip line construction that middle synthesizer generally uses, so suspending conductor can use tubing, wire rod or bar etc. to add
Work, the bond strength of suspension conductor is not only set to be strengthened, and it is easy to process, while greatly reduce the edge of suspension conductor
Effect, therefore the volume of synthesizer can be reduced, be advantageous to the flattening of synthesizer.Synthesizer of the present utility model is adopted on the whole
With Wilkinson a quarter is adopted as with network, the electrical length of suspension conductor, connecting cable and balanced cable is combined to
Operation wavelength, meet with the requirement for being combined to network.The box body structure of box and load tray is synthesized as whole in-phase loop shape loop
The outer conductor of synthesizer, the inner wire of the impedance transformation part of in-phase loop shape loop synthesizer is set in the form of suspending conductor
In synthesis box；Load resistance and balanced cable on loop are arranged in load tray, and load tray can be close to rack during installation
Side plate is simultaneously radiated using Side plate of machine cabinet, or load tray configures the radiator of flat structure, synthesizes box and load tray
Between using connecting cable connect, can mainly make synthesis box more flexible in the arrangement of rack with load tray.
Preferably, the main paragraph of suspension conductor is in polyline shaped setting, including straightway and what is be connected with straightway turn back
Section, described straightway is parallel to each other and spaced set, and described back-turning section is in circular arc.The main paragraph of conductor is suspended in folding
Wire is set, and can effectively shorten the length of synthesizer, simultaneously because the utility model uses cross section to be led for the suspension of circle
Body, therefore the polyline shaped of S-shaped is processed into by simple bending can, compared with strip line, processing is very easy to, into
This is very low.
Preferably, suspension conductor is arranged on the median plane of synthesis box depth direction, the spacing of adjacent straightway is more than
Equal to the depth of synthesis box, suspend and be provided with insulating supporting bar between conductor and box body.The spacing of adjacent straightway, which is more than or equal to, closes
Into the depth of box, can reduce due to the spacing of straightway is too small and to adverse effect caused by synthesizer technical indicator.Here
Synthesis box depth, refer to synthesize box in the inner space part of thickness direction, the median plane of synthesis box depth direction is positioned at closing
Into at the half of box depth；And the thickness of box is synthesized, refer to that synthesizing box includes the overall dimensions of bottom plate and cover sheet thickness.
Preferably, being provided with matching micro-adjusting mechanism close to the suspension conductor of the left and right of output interface two, the matching is micro-
Regulating mechanism is the sliding block being arranged on suspension conductor, and sliding block is provided with locking mechanism.Synthesizer in view of three line structures or so
Two of both sides suspension conductors are the same with that can not accomplish in a middle suspension conductor its structure, therefore close to exporting
Matching micro-adjusting mechanism is set on the suspension conductor of left and right two of interface, can be made up by adjusting matching micro-adjusting mechanism in structure
Difference, synthesizer is set to reach superior technique index near frequency of use.
Preferably, the electrical length of suspension conductor is 685 to 870 millimeters, the characteristic impedance for suspending conductor is 85-90 Europe
Nurse；Connecting cable and balanced cable are polytetrafluoroethylcable cable, and the characteristic impedance of connecting cable and balanced cable is 50 Europe
Nurse, the one end of balanced cable away from load resistance are connected with each other by threeway connector.685 to 870 millimeters of correspondences of electrical length
In frequency modulation 88-108MHz quarter-wave, the inferential impedance that conductor is suspended when three tunnels synthesize is 86.6 ohm, actual use
When would generally produce certain deviation, can be chosen between 85-90 ohms.Polytetrafluoroethylcable cable is high temperature-resistant cable, can be with
Meet the requirement of the high power transmission requirement and the high temperature that is likely to occur of load resistance of synthesizer to cable heatproof.
Preferably, the impedance of load resistance is 50 ohm, by two 800 watts 100 ohm of SMD high-frequency high-power
Resistor coupled in parallel is formed, and described load resistance is arranged on the middle part of load tray, and described connecting cable sets up separately with balanced cable
The both sides of load resistance.The rated power of the utility model single channel load resistance is 1600 watts, can meet that final power amplifies
The power of synthesizer load resistance is born to require during device output abnormality.
Preferably, synthesis box and load tray is spirally connected compositions by the cover plate of aluminum, gusset plate and bottom plate, gone back in synthesis box
Provided with the dividing plate for separating suspended adjacent conductor；The bottom plate of load tray is aluminum profile heat radiator, and load resistance is fixed on aluminium profiles
On material radiator, the integral thickness for synthesizing box and load tray is respectively less than equal to 60 millimeters.The utility model is only at the bottom of load tray
Portion sets radiator, due to only having cable and SMD high-frequency high-power resistance, therefore the thickness direction of its occupancy in load tray
Space is relatively fewer, and plus the thickness of aluminum profile heat radiator, the integral thickness of load tray is also relatively small, and load tray can be made whole
Body flat structure.
Preferably, suspension conductor for circular in cross-section copper pipe or copper rod bending form, three suspension conductors with it is defeated
The connection end of outgoing interface is welded with a conductive pole, and three suspension conductors are connected by conductive pole with output interface, and described is defeated
Outgoing interface is the coaxial interfaces of φ 40, and described input interface and connecting interface are L29 sockets.
The beneficial effects of the utility model are：1st, using flat box structure, it is convenient to be mounted in rack, is advantageous to complete machine
Layout；2nd, using the suspension conductor of circular section, power is big, easy to process and cost is low；3rd, box and load tray split settings are synthesized,
Box body thickness is small, and mounting arrangement is flexible；4th, there is matching micro-adjusting mechanism, debugging is convenient, easily realizes higher technical indicator.
Brief description of the drawings
Fig. 1 is a kind of electrical schematic diagram of the present utility model.
Fig. 2 the utility model synthesizes a kind of structural representation of box；
Fig. 3 the utility model synthesizes a kind of internal structure schematic diagram of box；
Fig. 4 is a kind of internal structure schematic diagram of the utility model load tray；
Fig. 5 is the utility model synthesis box and a kind of structural representation of load tray connection status；
Fig. 6 is Fig. 5 left view.
In figure：1. box is synthesized, 2. input interfaces, 3. output interfaces, 4. suspension conductors, 5. connecting interfaces, 6. load trays, 7.
Load resistance, 8. connecting cables, 9. balanced cables, 10. straightways, 11. back-turning section, 12. insulating supporting bars, 13. sliding blocks, 14.
Threeway connector, 15. cover plates, 16. gusset plates, 17. bottom plates, 18. dividing plates, 19. aluminum profile heat radiators, 20. conductive poles, 21. connect
Contact pin.
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. 5, a kind of split type power combiners of frequency modulation 5kW, including flat structure
Synthesize box and with synthesizing load tray of the box by cable connection, synthesis box and cover plate 15 of the load tray by aluminum, gusset plate 16
And bottom plate 17 is spirally connected composition（See Fig. 6）, bottom plate is provided with mounting hole.The box body of the synthesis box 1 is provided with three input interfaces 2
And an output interface 3, three input interfaces are the L29 sockets of 50 ohm of characteristic impedance, output interface is the coaxial interfaces of φ 40,
Three input interfaces and an output interface are arranged on the cover plate of synthesis box.Synthesize in the box body of box and be provided with three electricity side by side
The suspension conductor 4 that gas length is 685 to 870 millimeters, characteristic impedance is 85-90 ohms（See Fig. 3）（The present embodiment suspension conductor
Electrical length is 750 millimeters, characteristic impedance is 86 ohm）, the circular in cross-section of conductor is suspended, the main paragraph for suspending conductor is in
S-shaped polyline shaped is set, and is made up of copper pipe bending, including straightway 10 and the back-turning section 11 that is connected with straightway, described
Straightway is parallel to each other and spaced set, and described back-turning section is in circular arc；Suspension conductor is arranged on synthesis box depth direction
Median plane on, the spacing of adjacent straightway is equal to the depth of synthesis box, and the depth of the present embodiment synthesis box is 50 millimeters, suspension
A diameter of 12 millimeters of conductor.Insulating supporting bar 12 is provided between suspension conductor and box body, the insulating supporting bar is by upper and lower two
Root clamping strip is formed, and clamping strip is fixed on conductor is suspended on the median plane of synthesis box depth direction.The one of three suspension conductors
End is welded with conductive pole 20, and is connected by conductive pole with the inner wire of output interface, close to conductive pole（Connect close to output
Mouthful）The suspension conductor of left and right two be provided with matching micro-adjusting mechanism, the matching micro-adjusting mechanism is to be arranged on suspension conductor
Sliding block 13, sliding block are provided with locking mechanism.Inner wire of three suspension conductor other ends respectively with three input interfaces is connected, and is closed
The dividing plate 18 for separating suspended adjacent conductor is additionally provided with into box；It is additionally provided with the box body of synthesis box in parallel with input interface
Three connecting interfaces 5（See Fig. 2）, connecting interface is the L29 sockets of 50 ohm of characteristic impedance, is arranged on against the side of input interface
On coaming plate, connected between connecting interface and input interface by connection sheet 21.Described load tray 6 is flat structure, by aluminium
Cover plate, gusset plate and the bottom plate of matter are spirally connected composition, and three load resistances 7 are provided with the box body of load tray（See Fig. 4）, each load
Resistance is connected by electrical length for the connecting cable 8 of a quarter operation wavelength with an input interface, and the one of connecting cable
End be connected with load resistance, the other end pass the gusset plate of load tray and be provided with can be with the coaxial plug of connecting interface grafting.Often
Be also associated with individual load resistance an electrical length be a quarter operation wavelength balanced cable 9, balanced cable it is another
End is connected with each other by threeway connector 14, and connecting cable and balanced cable are polytetrafluoroethylcable cable, and connecting cable is peaceful
The characteristic impedance of weighing apparatus cable is 50 ohm.The impedance of load resistance is 50 ohm, SMD by two 800 watts 100 ohm
High-frequency high-power resistor coupled in parallel is formed, and described load resistance is arranged on the middle part of load tray, described connecting cable and balance
Cable sets up separately in the both sides of load resistance.The bottom plate of load tray is aluminum profile heat radiator 19, and load resistance is fixed on aluminium section bar and dissipated
On hot device, the integral thickness for synthesizing box and load tray is 60 millimeters.
Embodiment 2
The suspension conductor that embodiment 2 uses is made up of the copper rod bending of circular in cross-section, and remaining and embodiment 1 are identical.
The split type power combiners of frequency modulation 5kW of the present utility model have advantages below：1st, using flat box structure,
Attachment is convenient in rack, is advantageous to complete machine layout；2nd, using the suspension conductor of circular section, power is big, easy to process and cost is low；
3rd, box and load tray split settings are synthesized, box body thickness is small, and mounting arrangement is flexible；4th, there is matching micro-adjusting mechanism, debugging is convenient,
Easily realize higher 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 (9)
1. a kind of split type power combiners of frequency modulation 5kW, including the synthesis box of flat structure and pass through cable connection with synthesis box
Load tray, it is characterized in that：The synthesis box（1）Box body be provided with three input interfaces（2）An and output interface（3）,
Synthesize and be provided with the suspension conductor that three electrical lengths are a quarter operation wavelength in the box body of box side by side（4）, suspend conductor
Circular in cross-section, one end of three suspension conductors are connected with each other and connected with the inner wire of output interface, three suspension conductors
Inner wire of the other end respectively with three input interfaces is connected, and synthesizes and three in parallel with input interface are additionally provided with the box body of box
Connecting interface（5）；Described load tray（6）For flat structure, the box body of load tray is interior to be provided with three load resistances（7）, often
Connecting cable of the individual load resistance by electrical length for a quarter operation wavelength（8）Connected with an input interface, each
The balanced cable that an electrical length is a quarter operation wavelength is also associated with load resistance（9）, balanced cable it is another
End is connected with each other.
2. the split type power combiners of frequency modulation 5kW according to claim 1, it is characterised in that the master of the suspension conductor
Body section is set in polyline shaped, including straightway（10）And the back-turning section being connected with straightway（11）, described straightway is mutually flat
Go and spaced set, described back-turning section are in circular arc.
3. the split type power combiners of frequency modulation 5kW according to claim 2, it is characterised in that suspension conductor is arranged on conjunction
Into on the median plane of box depth direction, the spacing of adjacent straightway is more than or equal to the depth of synthesis box, suspension conductor and box body it
Between be provided with insulating supporting bar（12）.
4. the split type power combiners of frequency modulation 5kW according to claim 1, it is characterised in that close to a left side for output interface
Right two suspensions conductor is provided with matching micro-adjusting mechanism, and the matching micro-adjusting mechanism is the sliding block being arranged on suspension conductor
（13）, sliding block is provided with locking mechanism.
5. the split type power combiners of frequency modulation 5kW according to claim 1, it is characterised in that the electricity of the suspension conductor
Gas length is 685 to 870 millimeters, and the characteristic impedance for suspending conductor is 85-90 ohms.
6. the split type power combiners of frequency modulation 5kW according to claim 1, it is characterised in that the connecting cable peace
The cable that weighs is polytetrafluoroethylcable cable, and the characteristic impedance of connecting cable and balanced cable is 50 ohm, and balanced cable is remote
One end of load resistance passes through threeway connector（14）It is connected with each other.
7. the split type power combiners of frequency modulation 5kW according to claim 1, it is characterised in that described load resistance
Impedance is 50 ohm, is made up of two 800 watts 100 ohm of SMD high-frequency high-power resistor coupled in parallel, described load resistance
The middle part of load tray is arranged on, described connecting cable sets up separately in the both sides of load resistance with balanced cable.
8. the split type power combiners of frequency modulation 5kW according to claim any one of 1-7, it is characterised in that synthesis box with
Load tray by aluminum cover plate（15）, gusset plate（16）And bottom plate（17）Be spirally connected composition, synthesizes and is additionally provided with box for separating
The dividing plate of suspended adjacent conductor（18）；The bottom plate of load tray is aluminum profile heat radiator（19）, load resistance is fixed on aluminium section bar and dissipates
On hot device, the integral thickness for synthesizing box and load tray is respectively less than equal to 60 millimeters.
9. the split type power combiners of frequency modulation 5kW according to claim any one of 1-7, it is characterised in that suspension conductor
Copper pipe for circular in cross-section or copper rod bending are formed, the connection end of three suspension conductors and output interface with a conductive pole
（20）Welding, three suspension conductors are connected by conductive pole with output interface, and described output interface is the coaxial interfaces of φ 40, institute
The input interface stated and connecting interface are L29 sockets.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720873575.3U CN206992280U (en) | 2017-07-18 | 2017-07-18 | A kind of split type power combiners of frequency modulation 5kW |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720873575.3U CN206992280U (en) | 2017-07-18 | 2017-07-18 | A kind of split type power combiners of frequency modulation 5kW |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206992280U true CN206992280U (en) | 2018-02-09 |
Family
ID=61404613
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720873575.3U Expired - Fee Related CN206992280U (en) | 2017-07-18 | 2017-07-18 | A kind of split type power combiners of frequency modulation 5kW |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206992280U (en) |
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2017
- 2017-07-18 CN CN201720873575.3U patent/CN206992280U/en not_active Expired - Fee Related
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180209 |