CN104241781A - High-precision 10-watt 9dB attenuation plate - Google Patents
High-precision 10-watt 9dB attenuation plate Download PDFInfo
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- CN104241781A CN104241781A CN201410235305.0A CN201410235305A CN104241781A CN 104241781 A CN104241781 A CN 104241781A CN 201410235305 A CN201410235305 A CN 201410235305A CN 104241781 A CN104241781 A CN 104241781A
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- silver paste
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Abstract
The invention discloses a high-precision 100-watt 9dB attenuation plate. The high-precision 10-watt 9dB attenuation plate comprises a high-thermal-conductivity ceramic substrate which is 5 mm long, 2.5 mm wide and 1 mm thick, the high-thermal-conductivity ceramic substrate is a high-thermal-conductivity aluminum nitride ceramic substrate, symmetric silver paste circuits are printed on the front face of the high-thermal-conductivity aluminum nitride ceramic substrate, five black film-like resistors are printed between the silver paste circuits according to the characteristics of an attenuation circuit, the silver paste circuits and the five black film-like resistors are connected through high-temperature sintering, the back face of the high-thermal-conductivity aluminum nitride ceramic substrate is printed with silver paste, and the symmetric silver paste circuits and the silver paste printed on the back face are connected with the ground through the silver paste. According to the design of the attenuation plate, the design of the completely-symmetric circuits is adopted, various performance indexes such as a VSWR and attenuation precision are fully considered, the situation that original attenuation plates produced domestically can only be applied to low frequency is broken, the application requirements of a current 3G network are met, and all the indexes of the high-precision 100-watt 9dB attenuation plate reach international advanced levels.
Description
Technical field
The present invention relates to a kind of attenuator, particularly a kind of high accuracy 10 watts of 9dB attenuators.
Background technology
Be integrated with multiple membranaceous resistance to be at present integrated, be widely used in the apparatus field such as Aeronautics and Astronautics, radar, radio station, broadcast communication by the attenuator of resistance and circuit different designs.Working load sheet merely can only consume and absorb unnecessary power; and the signal using attenuator can also extract needs at the power absorbing oppositely input is analyzed simultaneously; and on high-frequency circuit, adjust power level, decoupling, protective effect is served to relevant device.
Abroad, particularly American-European countries, to attenuator and carrier sheet development & production all Zao than domestic starting a lot, the rich of product or product microwave property are all in comparative advantages status.On domestic market, existing attenuator series is few simultaneously, and attenuation accuracy is low, and the frequency range relative narrower that can use.The attenuator that we wish is a power consumption component, can not have impact to two terminal circuits, that is, all mates with two terminal circuits.When attenuation accuracy or VSWR do not reach require time, the signal that output obtains does not meet actual requirement.
Summary of the invention
For above-mentioned the deficiencies in the prior art, the technical problem to be solved in the present invention is to provide a kind of resistance and meets 64.4 Ω ± 3%, within 3G frequency range, attenuation accuracy is 9 ± 0.5dB, standing wave requires that input, output are within 1.15, the high accuracy that the application that can meet current 3G network requires 10 watts of 9dB attenuators, replace same kind of products at abroad, and characteristically fill up the blank of home products.
For solving the problems of the technologies described above, the present invention adopts following technical scheme:
A kind of high accuracy 10 watts of 9dB attenuators, it is characterized in that: comprise a long 5mm, wide 2.5mm, the high heat conductivity ceramic base plate of thickness 1mm, described high heat conductivity ceramic base plate is high-heat conductivity aluminium nitride ceramics substrate, the front of described high-heat conductivity aluminium nitride ceramics substrate is printed with symmetrical silver slurry circuit, 5 membranaceous resistance of black are printed with according to attenuator circuit characteristic between described silver slurry circuit, described silver slurry circuit is communicated with by high temperature sintering with 5 membranaceous resistance of black, the back up of described high-heat conductivity aluminium nitride ceramics substrate has silver slurry, the silver slurry circuit of described symmetry and the silver slurry of back up starch earth-continuity by silver.
Preferably, described attenuator circuit is coated with black protective film, this black protective film is formed by the printing of acid and alkali-resistance resin material.
Preferably, described silver slurry circuit produces RF performance with 5 membranaceous resistance of black by being communicated with after high temperature sintering.
Technique scheme has following beneficial effect: high accuracy 10 watts of 9dB attenuators, have employed high heat conduction aluminium nitride ceramics as substrate material, so can adopt the design of small-volume large-power in design, effectively reduces production cost; Simultaneously because the reducing of volume, unit are substrate can the product of output just more, substantially increase production efficiency; And the design of symmetric circuit, the frequency characteristic of product is stablized, breaches the difficult situation that domestic attenuator can only be applied to low frequency, make this model attenuator can be applied to the network of 3G.The production of the microwave products such as apparatus field isolator, circulator such as Aeronautics and Astronautics, radar, radio station, broadcast communication can be widely used in.
Above-mentioned explanation is only the general introduction of technical solution of the present invention, in order to better understand technological means of the present invention, and can be implemented according to the content of specification, coordinates accompanying drawing to be described in detail as follows below with preferred embodiment of the present invention.The specific embodiment of the present invention is provided in detail by following examples and accompanying drawing thereof.
Accompanying drawing explanation
Fig. 1 is the structural representation of the embodiment of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the preferred embodiments of the present invention are described in detail.
As shown in Figure 1, this high accuracy 10 watts of 9dB attenuators, comprise the high-thermal-conductivity aluminium nitride ceramic substrate 1 of a long 5.0mm, wide 2.5mm, thickness 1.0mm, the back up of high-thermal-conductivity aluminium nitride ceramic substrate 1 has silver slurry back of the body conducting shell, the front of high-thermal-conductivity aluminium nitride ceramic substrate 1 is printed with symmetrical silver slurry circuit 2 and 5 black membranaceous resistance R1, R2, R3, R4, R5,5 black membranaceous resistance R1, R2, R3, R4, R5 are connected to form attenuator circuit by wire, attenuator circuit is connected with back of the body conducting shell by low-temperature silver slurry, thus makes attenuator circuit earth-continuity.This attenuator circuit is symmetrical along the center line of ceramic substrate; 5 membranaceous resistance R1, R2, R3, R4, R5 are printed with the glass diaphragm 3 of high temperature sintering; the upper surface of the glass diaphragm 3 of symmetrical silver-colored slurry circuit 2 and high temperature sintering is also printed with one deck black resin diaphragm 4, like this can symmetrical silver slurry circuit 2 and 5 black membranaceous resistance R1, R2, R3, R4, R5 formation duplicate protections.
This high accuracy 10 watts of 9dB attenuators require that the resistance of input and ground connection is 64.4 Ω ± 3%, and the resistance of output and ground is 64.4 Ω ± 3%.Signal input part enters attenuator, through 5 black membranaceous resistance R1, R2, R5, R3, R4 to the progressively absorption of power, exports the signal required for reality from output.
High accuracy 10 watts of 9dB attenuators, have employed high heat conduction aluminium nitride ceramics as substrate material, so can adopt the design of small-volume large-power in design, effectively reduce production cost; Simultaneously because the reducing of volume, unit are substrate can the product of output just more, substantially increase production efficiency; And the design of symmetric circuit, the frequency characteristic of product is stablized, breaches the difficult situation that domestic attenuator can only be applied to low frequency, make this model attenuator can be applied to the network of 3G.The production of the microwave products such as apparatus field isolator, circulator such as Aeronautics and Astronautics, radar, radio station, broadcast communication can be widely used in.
Above a kind of high accuracy 10 watts of 9dB attenuators that the embodiment of the present invention provides are described in detail; for one of ordinary skill in the art; according to the thought of the embodiment of the present invention; all will change in specific embodiments and applications; in sum; this description should not be construed as limitation of the present invention, and all any changes made according to design philosophy of the present invention are all within protection scope of the present invention.
Claims (3)
1. a high accuracy 10 watts of 9dB attenuators, it is characterized in that: comprise a long 5mm, wide 2.5mm, the high heat conductivity ceramic base plate of thickness 1mm, described high heat conductivity ceramic base plate is high-heat conductivity aluminium nitride ceramics substrate, the front of described high-heat conductivity aluminium nitride ceramics substrate is printed with symmetrical silver slurry circuit, 5 membranaceous resistance of black are printed with according to attenuator circuit characteristic between described silver slurry circuit, described silver slurry circuit is communicated with by high temperature sintering with 5 membranaceous resistance of black, the back up of described high-heat conductivity aluminium nitride ceramics substrate has silver slurry, the silver slurry circuit of described symmetry and the silver slurry of back up starch earth-continuity by silver.
2. high accuracy according to claim 1 10 watts of 9dB attenuators, is characterized in that: described attenuator circuit is coated with black protective film, and this black protective film is formed by the printing of acid and alkali-resistance resin material.
3. high accuracy according to claim 1 10 watts of 9dB attenuators, is characterized in that: described silver slurry circuit produces RF performance with 5 membranaceous resistance of black by being communicated with after high temperature sintering.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410235305.0A CN104241781A (en) | 2014-05-29 | 2014-05-29 | High-precision 10-watt 9dB attenuation plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410235305.0A CN104241781A (en) | 2014-05-29 | 2014-05-29 | High-precision 10-watt 9dB attenuation plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104241781A true CN104241781A (en) | 2014-12-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410235305.0A Pending CN104241781A (en) | 2014-05-29 | 2014-05-29 | High-precision 10-watt 9dB attenuation plate |
Country Status (1)
| Country | Link |
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| CN (1) | CN104241781A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5332981A (en) * | 1992-07-31 | 1994-07-26 | Emc Technology, Inc. | Temperature variable attenuator |
| CN202259626U (en) * | 2011-09-08 | 2012-05-30 | 苏州市新诚氏电子有限公司 | 100 W-10 dB attenuation sheet of high-power aluminum nitride ceramic substrate |
-
2014
- 2014-05-29 CN CN201410235305.0A patent/CN104241781A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5332981A (en) * | 1992-07-31 | 1994-07-26 | Emc Technology, Inc. | Temperature variable attenuator |
| CN202259626U (en) * | 2011-09-08 | 2012-05-30 | 苏州市新诚氏电子有限公司 | 100 W-10 dB attenuation sheet of high-power aluminum nitride ceramic substrate |
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Application publication date: 20141224 |
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