CN202603109U - Novel large-power radio frequency power amplifier fixing device - Google Patents
Novel large-power radio frequency power amplifier fixing device Download PDFInfo
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- CN202603109U CN202603109U CN 201220135479 CN201220135479U CN202603109U CN 202603109 U CN202603109 U CN 202603109U CN 201220135479 CN201220135479 CN 201220135479 CN 201220135479 U CN201220135479 U CN 201220135479U CN 202603109 U CN202603109 U CN 202603109U
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- power amplifier
- frequency power
- radio
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Abstract
The utility model discloses a novel large-power radio frequency power amplifier fixing device, comprising the components as following: a heat radiation pedestal; a PCB plate, wherein the PCB plate is tightly covered on the upper surface layer of the heat radiation pedestal, the plate is provided with a central aperture, a set of pads are arranged along the surrounding edge of the central aperture, and the plate is also provided with a pair of fixing apertures for connection; and an inverted-Omega-shaped sheet, wherein the central section of the sheet is an arc-shaped groove, the upper two sides of the sheet are respectively extended outward to form terminal ears, each terminal ear is provided with a fixing aperture, the sheet is connected with the PCB plate through screws passing through the fixing apertures and an adjusting protection fixer. The arc-shaped groove at the central section of the inverted-Omega-shaped sheet presses the large-power radio frequency power amplifier downward against the heat radiation pedestal, and the inverted-Omega-shaped sheet, the PCB plate and the heat radiation pedestal are connected together through screws or bolts passing through the fixing apertures on the terminal ears. The radio frequency power amplifier is fixedly disposed through the novel large-power radio frequency power amplifier fixing device, not only is a low-cost installation method of the radio frequency power amplifier provided, but also the grounding and heat radiation performance of the radio frequency power amplifier is guaranteed, the performance consistency is enhanced, and production assembling is convenient.
Description
Technical field
The utility model relates to communication equipment field, in particular, relates to a kind of communication equipment radio-frequency power amplifier erecting device and utilizes it to realize the method for installing.
Background technology
Radio-frequency power amplifier is the important component part of various transmitting sets, in emission system, the radio-frequency power amplifier power output can be greatly to hundreds of watts.So the impedance ground of radio-frequency power amplifier and radiating effect have determined the reliability and the cost of whole amplifier work, and its installation and fixing means are just extremely crucial.
Radio-frequency power amplifier is selected special-purpose power amplifier module for use; Ground connection effect and heat dispersion are all secure; But cost is higher, and each special-purpose radio-frequency power amplifier module all needs specific mounting structure to cooperate, and brings than limitations for the overall construction design of equipment.The general radio frequency amplifier tube that use cost is lower comes the designed for greater reliability amplifier, has important use to be worth.
Usually ready-made power amplifier module all is the power amplifier manufacturers design and makes, and is directly to be welded on radio-frequency power amplifier on the heat dispersion substrate, and heat dispersion substrate internally is connected with power amplifier.When mounted, radiating copper sheet directly contacts with the ground connection Copper Foil of pcb board, and lower impedance ground is arranged, and the soft cushioning that adds heat conduction between radiating copper sheet and the heat dissipation base is to improve the heat dispersion of power amplifier.This mode is that power amplifier module is special-purpose, and the device purchase cost is higher, and structural design receives the power amplifier module shape limits, and is dumb.
The utility model content
The purpose of the utility model provides a kind of fixture of radio-frequency power amplifier; Utilize it fixedly to lay radio-frequency power amplifier; The installation method of radio-frequency power amplifier cheaply not only can be provided; And can guarantee radio-frequency power amplifier ground connection and heat radiation well, improve consistency of performance, and be convenient to produce assembling.
For realizing above-mentioned purpose, the utility model adopts following technical scheme:
A kind of novel high-power radio-frequency power amplifier fixture, it comprises:
One heat dissipation base, its upper surface are a flat face or have groove;
One pcb board; Tightly be overlying on the upper epidermis of heat dissipation base; Have on this pcb board and can supply radio-frequency power amplifier to be positioned at mesopore wherein, the packaging appearance structure of the shape of this mesopore and radio-frequency power amplifier is mated each other, is furnished with an assembly welding dish along the surrounding edge of this mesopore; This assembly welding dish comprises a pair of input, output pin pad and a pair of ground pad; Also offer a pair of connection on the pcb board and use fixing hole, described a pair of ground pad is used to supply the connection of radio-frequency power amplifier ground pin, and described input, output pin pad are used to supply the connection of radio-frequency power amplifier input, output pin;
One shape of reverse omega sheet, it is processed by elastic metallic material, and the middle part is the arc groove body, and last both sides are outward extended with the end ear respectively, and each is held and offers the screw and of fixing hole through passing its fixing hole on the ear and regulate the protection retention means and be connected with the pcb board realization; The middle part arc groove body of this shape of reverse omega sheet is pressed on the high-power RF power amplifier on the heat dissipation base downwards;
Realize that by screw that passes fixing hole on the end ear or bolt shape of reverse omega sheet, pcb board are connected with the heat dissipation base three's.
In the described radio-frequency power amplifier fixture, the pad of ground pin is welded on the sidewall of PCB mesopore.
In the described radio-frequency power amplifier fixture, the straight area of arc groove face of the middle part body of this shape of reverse omega sheet is not less than the upper surface of the radio-frequency power amplifier encapsulation of being installed; Described adjusting protection retention means is used to adjust the shape of reverse omega sheet and presses down limit height, and the gross thickness of this adjusting protection retention means is: (limiting altitude that the shape of reverse omega sheet presses down+radio-frequency power amplifier thickness-pcb board thickness) ± 5mm.
The adjusting protection retention means of said radio-frequency power amplifier fixture is one group and piles up the annular elastomeric pad that closes each other.
Another purpose of the utility model provides a kind of installation method of radio-frequency power amplifier cheaply.
For realizing above-mentioned purpose, the utility model adopts following technical scheme:
A kind of method of utilizing aforesaid fixture to realize the radio-frequency power amplifier installation, its method step is following:
1) the heat dissipation base upper surface that adopts is the plane or has a groove that this groove can hold the radio-frequency power amplifier body and crouch into;
2) earlier pcb board is fixed on the heat dissipation base, if adopt upper surface to have the heat dissipation base of groove, it is corresponding with the groove on the heat dissipation base then will to make the mesopore of pcb board offer the position;
3) be placed on the position of radio-frequency power amplifier welding in the mesopore of pcb board radio-frequency power amplifier and welding then,, then directly radio-frequency power amplifier crouched into wherein and welding if adopt upper surface to have the heat dissipation base of groove;
4) place the shape of reverse omega sheet on the radio-frequency power amplifier again; Through hole is used in the corresponding connection on the pcb board of through hole on the end ear of shape of reverse omega sheet both sides; To regulate the protection retention means and be placed between two holes, and pass the shape of reverse omega sheet successively, tighten after regulating protection retention means, pcb board and heat dissipation base with screw;
5) with on the input of radio-frequency power amplifier, input that output pin correctly is welded on pcb board, the output pin pad;
6) remove the shape of reverse omega sheet temporarily,, and the shape of reverse omega sheet is installed once more the correct and corresponding sidewall ground pad welding of PCB of both sides ground pin of radio-frequency power amplifier.
In the method step 4 that said radio-frequency power amplifier is installed; Regulate the protection retention means and adopt one group of annular elastomeric pad; Elder generation's budget goes out the protection pad annular elastomeric pad quantity of required storing between two holes, and the annular elastomeric pad of number of matches is overlayed between two holes.
The installation of high-power RF power amplifier is the difficult problem that cost and performance are difficult to balance, and the utility model provides a kind of good earth for a long time and can take into account the fixture and the installation method of heat radiation.
The utility model has the advantages that:
1) cost is lower, and the cost price of the radio-frequency power amplifier that heat radiation of the utility model handle and ground connection are packaged together is below half of other encapsulation radio-frequency power amplifiers;
2) simple in structure, be easy to produce;
Easy operating 3) is installed simply;
4) radio-frequency power amplifier is pressed on the heat dissipation base; And because the thickness of pad calculates through measuring; Can protect radio-frequency power amplifier well, can not damage radio-frequency power amplifier, make radio-frequency power amplifier get the life-span and strengthen greatly because of pressure is excessive;
When 5) having guaranteed good heat radiating, because reasonable installation steps cleverly, receive distortional stress hardly after making the radio-frequency power amplifier pin be welded to PCB, serviceability is more stable;
6) pad of ground pin is welded on the sidewall of PCB; The innovation welding method that this ground pin is direct and PCB sidewall ground pad welds; Strengthened the heat-sinking capability of radio-frequency power amplifier; And impedance ground is little, and has avoided traditional contact ground connection because of the imperfect earth phenomenon that the contact-making surface oxidation causes, has guaranteed permanent good ground connection.
Description of drawings
Fig. 1 is existing radio-frequency power amplifier structural representation.
Fig. 2 is the utility model radio-frequency power amplifier fixture one example structure sketch map.
Fig. 3 is the pcb board structural representation (overlooking) in embodiment illustrated in fig. 2.
Fig. 4 is a vertical view embodiment illustrated in fig. 2.
Fig. 5 is fixed cell device (shape of reverse omega sheet) structural representation (overlooking) in embodiment illustrated in fig. 2.
Below in conjunction with accompanying drawing and specific embodiment the utility model is done in detail and to be further specified.
Embodiment
Shown in Figure 1 is the structural representation of existing radio-frequency power amplifier 2, and it comprises radio-frequency power amplifier body and input, output pin pin two 1,22 and the ground pin 23,24 at middle part.
Fig. 2 shows the structure of an embodiment of the utility model radio-frequency power amplifier fixture, has also provided radio-frequency power amplifier among the figure and has been placed on corresponding position signal on the pcb board.Among this embodiment; The radio-frequency power amplifier fixture mainly is made up of heat dissipation base 6, pcb board 3 and fixed cell device 1, and fixed cell device 1 is connected with pcb board 3 realizations through pair of adjustment bolt group at least (every group regulate protection retention means 4 with a group by a bolt 5).The input of radio-frequency power amplifier tube 2, output pin are welded on respectively in the input, o pads of pcb board 3; What label 24 indicated among the figure is the ground pin of radio-frequency power amplifier tube 2, and a pair of ground pin of radio-frequency power amplifier tube 2 is welded on respectively on the ground pad of pcb board 3 mesopore sidewalls.
Referring to Fig. 2, among this embodiment, the upper surface of heat dissipation base 6 can be a flat face, or has and can hold the radio-frequency power amplifier body groove into that crouches; The prior radiating structure form can be adopted in the bottom of heat dissipation base 6.
Referring to Fig. 2 to Fig. 4; Pcb board 3 among this embodiment tightly is overlying on the upper epidermis of heat dissipation base 6, has on this pcb board 3 to supply radio-frequency power amplifier to be positioned at mesopore 37 wherein, and the packaging appearance structure of the shape of this mesopore and radio-frequency power amplifier tube is mated each other; Surrounding edge along this mesopore is furnished with an assembly welding dish; This assembly welding dish comprises a pair of input, output pin pad 31,32 and a pair of ground pad 33,34, and described a pair of ground pad 33,34 is arranged on the sidewall of pcb board mesopore, and the benefit that is provided with like this is: impedance ground is little; Contact-making surface is difficult for oxidation, and can strengthen the heat-sinking capability of radio-frequency power amplifier.Also offer a pair of connection in addition on the pcb board with fixing hole 35,36.
Described fixed cell device is to be used for the radio-frequency power amplifier tube is fixed on heat dissipation base.Referring to Fig. 1 and Fig. 5; Among this embodiment, fixed cell device 1 is a shape of reverse omega sheet, and the center is an arc groove body 13; Have fixing hole 11 on the end ear 12 of both sides; Referring to shown in Figure 1, with one group of adjusting protection retention means 4 this shape of reverse omega sheet and pcb board are realized being connected during installation, the middle part arc groove body 13 of this shape of reverse omega sheet can be against radio-frequency power amplifier 2 on the heat dissipation base 6 downwards through a bolt 5.The middle part straight area of arc groove dignity of this shape of reverse omega sheet is not less than the upper surface of the radio-frequency power amplifier encapsulation of being installed.This shape of reverse omega sheet should be to be processed by elastic metallic material; Described adjusting protection retention means is used to adjust the shape of reverse omega sheet and presses down limit height; Its preferred mode is to adopt to pile up an annular elastomeric pad 4 (can be the soft rubber material) that closes each other, and this group pad is piled up gross thickness after closing and should be satisfied and be: (limiting altitude that the shape of reverse omega sheet presses down+radio-frequency power amplifier thickness-pcb board thickness) ± 5mm; Like this, reach the thickness of selected monolithic annular elastomeric pad according to the actual requirements, can calculate the number of using one group of pad in advance, with best protection radio-frequency power amplifier.
Claims (5)
1. novel high-power radio-frequency power amplifier fixture is characterized in that comprising:
One heat dissipation base, its upper surface are a flat face or have groove;
One pcb board; Tightly be overlying on the upper epidermis of heat dissipation base; Have on this pcb board and can supply radio-frequency power amplifier to be positioned at mesopore wherein, the packaging appearance structure of the shape of this mesopore and radio-frequency power amplifier is mated each other, is furnished with an assembly welding dish along the surrounding edge of this mesopore; This assembly welding dish comprises a pair of input, output pin pad and a pair of ground pad; Also offer a pair of connection on the pcb board and use fixing hole, described a pair of ground pad is used to supply the connection of radio-frequency power amplifier ground pin, and described input, output pin pad are used to supply the connection of radio-frequency power amplifier input, output pin;
One shape of reverse omega sheet, it is processed by elastic metallic material, and the middle part is the arc groove body, and last both sides are outward extended with the end ear respectively, and each is held and offers the screw and of fixing hole through passing its fixing hole on the ear and regulate the protection retention means and be connected with the pcb board realization; The middle part arc groove body of this shape of reverse omega sheet is pressed on the high-power RF power amplifier on the heat dissipation base downwards;
Realize that by screw that passes fixing hole on the end ear or bolt shape of reverse omega sheet, pcb board are connected with the heat dissipation base three's.
2. radio-frequency power amplifier fixture according to claim 1 is characterized in that: the pad of ground pin is welded on the sidewall of PCB mesopore.
3. radio-frequency power amplifier fixture according to claim 1 is characterized in that: the straight area of arc groove face of the middle part body of this shape of reverse omega sheet is not less than the upper surface of the radio-frequency power amplifier encapsulation of being installed.
4. radio-frequency power amplifier fixture according to claim 1; It is characterized in that: described adjusting protection retention means is used to adjust the shape of reverse omega sheet and presses down limit height; The gross thickness of this adjusting protection retention means is: limiting altitude that the shape of reverse omega sheet presses down and radio-frequency power amplifier thickness sum deduct pcb board thickness again, and error range is ± 5mm.
5. radio-frequency power amplifier fixture according to claim 4 is characterized in that: described adjusting protection retention means is one group and piles up the annular elastomeric pad that closes each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220135479 CN202603109U (en) | 2012-04-01 | 2012-04-01 | Novel large-power radio frequency power amplifier fixing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220135479 CN202603109U (en) | 2012-04-01 | 2012-04-01 | Novel large-power radio frequency power amplifier fixing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202603109U true CN202603109U (en) | 2012-12-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220135479 Expired - Fee Related CN202603109U (en) | 2012-04-01 | 2012-04-01 | Novel large-power radio frequency power amplifier fixing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202603109U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103997304A (en) * | 2014-06-04 | 2014-08-20 | 泉州市琪祥电子科技有限公司 | Radio-frequency power amplifying circuit of high-power vehicle radio station |
-
2012
- 2012-04-01 CN CN 201220135479 patent/CN202603109U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103997304A (en) * | 2014-06-04 | 2014-08-20 | 泉州市琪祥电子科技有限公司 | Radio-frequency power amplifying circuit of high-power vehicle radio station |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121212 Termination date: 20150401 |
|
| EXPY | Termination of patent right or utility model |