CN104218287A - High-thermal-conductivity aluminum nitride ceramic 10w 14dB attenuator - Google Patents
High-thermal-conductivity aluminum nitride ceramic 10w 14dB attenuator Download PDFInfo
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- CN104218287A CN104218287A CN201410231933.1A CN201410231933A CN104218287A CN 104218287 A CN104218287 A CN 104218287A CN 201410231933 A CN201410231933 A CN 201410231933A CN 104218287 A CN104218287 A CN 104218287A
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Abstract
The invention discloses a high-thermal-conductivity aluminum nitride ceramic 10w 14dB attenuator comprising a high-thermal-conductivity ceramic substrate 5mm in length, 2.5mm in width and 1mm in thickness. The high-thermal-conductivity ceramic substrate is a high-thermal-conductivity aluminum nitride ceramic substrate. A sliver paste circuit is symmetrically printed on the front of the high-thermal-conductivity aluminum nitride ceramic substrate. Five black membrane resistors are printed within the sliver paste circuit according to features of an attenuation circuit. The sliver paste circuit and the black membrane resistors are communicated by high-temperature sintering. Sliver paste is printed on the back of the high-thermal-conductivity aluminum nitride ceramic substrate. The symmetric sliver paste circuit is communicated with the sliver paste printed on the back, through sliver paste grounding. According to the design scheme, the high-thermal-conductivity aluminum nitride ceramic 10w 14dB attenuator has the advantages that a fully symmetric circuit design is adopted, the performance indicators such as VSWR (voltage standing wave ratio) and attenuation precision are fully considered, the situation that the original domestically-produced attenuator is only applied to low frequency is broken through, the requirement for application in the existing 3G network is met, and the indicators are all of international advanced level.
Description
Technical field
The present invention relates to a kind of aluminium nitride ceramics attenuator, particularly 10 watts of 14dB attenuators of a kind of high-heat conductivity aluminium nitride ceramics.
Background technology
At present integrated multiple membranaceous resistance is integrated, and is 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 can only merely consume and absorb unnecessary power; analyze and use attenuator can also extract at the power that absorbs oppositely input the signal needing simultaneously; and on high-frequency circuit, adjust power level, decoupling, has played protective effect to relevant device.
Abroad, particularly American-European countries, to attenuator and carrier sheet research and development produce all Zao much than domestic starting, on the rich of product or product microwave property 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 to say, all mates with two terminal circuits.When attenuation accuracy or VSWR do not reach while requiring, 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 54.1 Ω ± 3%, in 3G frequency range, attenuation accuracy is 14 ± 0.5dB, standing wave requires input, output in 1.15, can meet 10 watts of 14dB attenuators of high-heat conductivity aluminium nitride ceramics of the application requirements of current 3G network, replace same kind of products at abroad, and in characteristic, fill up the blank of home products.
For solving the problems of the technologies described above, the present invention adopts following technical scheme:
10 watts of 14dB attenuators of a kind of high-heat conductivity aluminium nitride ceramics, 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, between described silver slurry circuit, be printed with 5 membranaceous resistance of black according to attenuator circuit characteristic, described silver slurry circuit and 5 membranaceous resistance of black are communicated with by high temperature sintering, 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 are starched earth-continuity by silver.
Preferably, the silver slurry that the silver slurry conducting of the silver of described symmetry slurry circuit and back up adopts is low-temperature solidified silver paste.
Preferably, after described silver slurry circuit and 5 membranaceous resistance of black are communicated with by high temperature sintering, high temperature sintering one deck glass diaphragm more also thereon.
Technique scheme has following beneficial effect: 10 watts of 14dB attenuators of high-heat conductivity aluminium nitride ceramics, and heat conduction is good, so can adopt in design the design of small-volume large-power, effectively reduces production cost; Simultaneously because the dwindling of volume, the product that unit are substrate can output is just more, has greatly improved production efficiency; And the design of symmetric circuit makes the frequency characteristic of product stable, break through domestic attenuator and can only be applied to the difficult situation of low frequency, make this model attenuator can be applied to the network of 3G.Can be widely used in the production of the microwave products such as apparatus field isolator, circulator such as Aeronautics and Astronautics, radar, radio station, broadcast communication.
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, below with preferred embodiment of the present invention and coordinate accompanying drawing to be described in detail as follows.The specific embodiment of the present invention is provided in detail by following examples and accompanying drawing thereof.
Brief description of the drawings
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, 10 watts of 14dB attenuators of this high-heat conductivity aluminium nitride ceramics, comprise a long 5.0mm, wide 2.5mm, the high-thermal-conductivity aluminium nitride ceramic substrate 1 of 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 2 and 5 membranaceous resistance R 1 of black of silver slurry circuit, R2, R3, R4, R5, 5 membranaceous resistance R 1 of black, R2, R3, R4, R5 is connected to form attenuator circuit by wire, attenuator circuit is starched with back of the body conducting shell and is connected by low-temperature silver, thereby make attenuator circuit earth-continuity.This attenuator circuit is along the center line symmetry of ceramic substrate; on 5 membranaceous resistance R 1, R2, R3, R4, R5, be printed with the glass diaphragm 3 of high temperature sintering; the upper surface of the glass diaphragm 3 of symmetrical silver slurry circuit 2 and high temperature sintering is also printed with one deck black resin diaphragm 4, can form duplicate protection to symmetrical silver slurry circuit 2 and 5 the membranaceous resistance R 1 of black, R2, R3, R4, R5 like this.
It is 54.1 Ω ± 3% that 10 watts of 14dB attenuators of this high-heat conductivity aluminium nitride ceramics require the resistance of input and ground connection, and the resistance of output and ground is 54.1 Ω ± 3%.Signal input part enters attenuator, through 5 membranaceous resistance R 1 of black, R2, R5, R3, the R4 progressively absorption to power, from the actual needed signal of output output.
10 watts of 14dB attenuators of high-heat conductivity aluminium nitride ceramics, heat conduction is good, so can adopt in design the design of small-volume large-power, effectively reduces production cost; Simultaneously because the dwindling of volume, the product that unit are substrate can output is just more, has greatly improved production efficiency; And the design of symmetric circuit makes the frequency characteristic of product stable, break through domestic attenuator and can only be applied to the difficult situation of low frequency, make this model attenuator can be applied to the network of 3G.Can be widely used in the production of the microwave products such as apparatus field isolator, circulator such as Aeronautics and Astronautics, radar, radio station, broadcast communication.
The 10 watts of 14dB attenuators of a kind of high-heat conductivity aluminium nitride ceramics that above embodiment of the present invention provided 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 of making according to design philosophy of the present invention are all within protection scope of the present invention.
Claims (3)
1. 10 watts of 14dB attenuators of a high-heat conductivity aluminium nitride ceramics, 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, between described silver slurry circuit, be printed with 5 membranaceous resistance of black according to attenuator circuit characteristic, described silver slurry circuit and 5 membranaceous resistance of black are communicated with by high temperature sintering, 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 are starched earth-continuity by silver.
2. 10 watts of 14dB attenuators of high-heat conductivity aluminium nitride ceramics according to claim 1, is characterized in that: the silver slurry that the silver slurry conducting of the silver slurry circuit of described symmetry and back up adopts is low-temperature solidified silver paste.
3. 10 watts of 14dB attenuators of high-heat conductivity aluminium nitride ceramics according to claim 1, is characterized in that: after described silver slurry circuit and 5 membranaceous resistance of black are communicated with by high temperature sintering, and high temperature sintering one deck glass diaphragm more also thereon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410231933.1A CN104218287A (en) | 2014-05-28 | 2014-05-28 | High-thermal-conductivity aluminum nitride ceramic 10w 14dB attenuator |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410231933.1A CN104218287A (en) | 2014-05-28 | 2014-05-28 | High-thermal-conductivity aluminum nitride ceramic 10w 14dB attenuator |
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| CN104218287A true CN104218287A (en) | 2014-12-17 |
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| CN201410231933.1A Pending CN104218287A (en) | 2014-05-28 | 2014-05-28 | High-thermal-conductivity aluminum nitride ceramic 10w 14dB attenuator |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102361132A (en) * | 2011-09-16 | 2012-02-22 | 苏州市新诚氏电子有限公司 | Large-power 100 W-9 dB attenuation sheet with aluminum nitride ceramic substrate |
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- 2014-05-28 CN CN201410231933.1A patent/CN104218287A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102361132A (en) * | 2011-09-16 | 2012-02-22 | 苏州市新诚氏电子有限公司 | Large-power 100 W-9 dB attenuation sheet with aluminum nitride ceramic substrate |
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Application publication date: 20141217 |