CN102709633A - 1-watt 30dB attenuation sheet of aluminum oxide ceramic substrate - Google Patents
1-watt 30dB attenuation sheet of aluminum oxide ceramic substrate Download PDFInfo
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- CN102709633A CN102709633A CN2012102160792A CN201210216079A CN102709633A CN 102709633 A CN102709633 A CN 102709633A CN 2012102160792 A CN2012102160792 A CN 2012102160792A CN 201210216079 A CN201210216079 A CN 201210216079A CN 102709633 A CN102709633 A CN 102709633A
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- aluminum oxide
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- oxide substrate
- attenuator
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Abstract
The invention discloses a 1-watt 30dB attenuation sheet of an aluminum oxide ceramic substrate, which comprises an aluminum oxide substrate, wherein the size of the aluminum oxide substrate is 2*3.5*0.635 millimeters, a back face of the aluminum oxide substrate is printed with a back guide layer, a front face of the aluminum oxide substrate is printed with guide lines and membrane-shaped resistors, the guide lines are connected with the membrane-shaped resistors to form a T-shaped attenuation circuit, and the attenuation circuit is symmetric along a central line of the aluminum oxide substrate. The attenuation sheet adopts a double-layer black protection membrane to print, the attenuation precision is slightly adjusted by using the influence of a medium, and the attenuation precision of a high attenuation value is guaranteed; on a scheme design, various performance indexes are fully considered, the attenuation sheet has the advantages of high frequency, no induction, small value on the design, optimized circuit, stable performance and low production cost, and can directly substitute a similar Beo attenuation sheet; the situation that the attenuation sheet only can be originally applied to low frequency is filled; the application requirement of the current three generation (3G) network is met; and meanwhile, series product lines of a 1-watt fixed membrane-shaped resistance type attenuation sheet are expanded.
Description
Technical field
The present invention relates to a kind of aluminium oxide ceramics attenuator, the attenuator of 1 watt of 30dB of particularly a kind of aluminium oxide ceramic substrate.
Background technology
The attenuator of at present integrated three membranaceous resistive arrangement is widely used in apparatus field such as Aeronautics and Astronautics, radar, radio station, broadcast communication.The working load sheet can only merely consume the power of absorbing redundant; Analyze and use attenuator can also extract the signal that needs simultaneously at the power that absorbs reverse input; And on high-frequency circuit, adjust power level, and decouple, relevant device has been played protective effect.
Since more Zao with manufacturing abroad than domestic starting to the research and development of like product, the status of on product line still is product performance, all having the advantage.Existing attenuator attenuation accuracy is low on the domestic market simultaneously, and employable frequency range relative narrower.The attenuator that we hope is a power consumption component, can not be influential to two terminal circuits, that is to say, and all mate with two terminal circuits.When attenuation accuracy or VSWR do not reach when requiring, the signal that output obtains does not meet actual requirement.
Summary of the invention
Deficiency to above-mentioned prior art; The technical problem that the present invention will solve provides a kind of impedance and satisfies 50 ± 1.5 Ω; Is 30 ± 1dB in the 3G frequency range with interior attenuation accuracy, and standing wave requires input, output in 1.2, can satisfy 1 watt of 30dB attenuator of power aluminium oxide ceramic substrate of the application requirements of present 3G network; Replace external like product, and on characteristic, fill up the blank of home products.
For solving the problems of the technologies described above, the present invention adopts following technical scheme:
1 watt of 30dB attenuator of a kind of aluminium oxide ceramic substrate; It comprises that one is of a size of the aluminum oxide substrate of 2*3.5*0.635MM; The back up of said aluminum oxide substrate has back of the body conducting shell; The front of said aluminum oxide substrate is printed with lead and membranaceous resistance, and said lead connects said membranaceous resistance and is connected to form T type attenuator circuit, and said attenuator circuit is along the center line symmetry of said aluminum oxide substrate.
Preferably, the upper surface of said lead and glass protection film also is printed with double-deck black protective film.
Preferably, back of the body conducting shell and lead are formed by the conductive silver paste printing, and said resistance is formed by the resistance slurry printing.
Technique scheme has following beneficial effect: 1 watt of 30dB attenuator of this aluminium oxide ceramic substrate is in a state of symmetry fully by attenuator circuit, and this small product size is little, and frequency characteristic is good; The stability of circuit gets a promotion, and double-deck black protective film printing is finely tuned through medium; Guaranteed the attenuation accuracy under the high pad value requirement; Make high frequency still can satisfy instructions for use, broken the situation that original attenuator can only be applied to low frequency, make attenuator can be applied to the network of 2G-3G.Can be widely used in the production of microwave products such as apparatus field isolator, circulator such as Aeronautics and Astronautics, radar, radio station, broadcast communication.
Above-mentioned explanation only is the general introduction of technical scheme of the present invention, understands technological means of the present invention in order can more to know, and can implement according to the content of specification, below with preferred embodiment of the present invention and conjunction with figs. specify as after.Embodiment of the present invention is provided by following examples and accompanying drawing thereof in detail.
Description of drawings
Fig. 1 is the structural representation of the embodiment of the invention.
Embodiment
Below in conjunction with accompanying drawing the preferred embodiments of the present invention are described in detail.
As shown in Figure 1; 1 watt of 30dB attenuator of this aluminium oxide ceramic substrate comprises that one is of a size of the aluminum oxide substrate 1 of 2*3.5*0.635MM; The back up of aluminum oxide substrate 1 has back of the body conducting shell, and the front of aluminum oxide substrate 1 is printed with lead 2 and membranaceous resistance R 1, R2, R3, and membranaceous resistance R 1, R2, R3 are connected to form attenuator circuit through lead; Attenuator circuit is electrically connected with back of the body conducting shell through the silver slurry, thereby makes the attenuator circuit earth-continuity.This attenuator circuit is along the center line symmetry of aluminum oxide substrate; Membranaceous resistance R 1, R2, the last glass protection film 3 that is printed with of R3; The upper surface of lead 2 and glass protection film 3 also is printed with double-deck black protective film 4, can form protection to lead 2 and membranaceous resistance R 1, R2, R3 like this.
It is 50 ± 1.5 Ω that 1 watt of 30dB attenuator of this aluminium oxide ceramic substrate requires the impedance of input and ground connection, and the impedance of output and ground is 50 ± 1.5 Ω.Signal input part gets into attenuator, through the progressively absorption to power of membranaceous resistance R 1, R3, R2, exports actual needed signal from output.
As substrate, this small product size is little with the aluminium oxide ceramics that is of a size of 2*3.5*0.635MM for 1 watt of 30dB attenuator of this aluminium oxide ceramic substrate, and frequency characteristic is good; The stability of circuit gets a promotion; Broken the situation that original attenuator can only be applied to low frequency, special design simultaneously lets attenuator circuit be in a state of symmetry fully, makes the stability of circuit get a promotion; Broken the situation that original attenuator can only be applied to low frequency, made it can be applied to the network of 2G-3G.Can be widely used in the production of microwave products such as apparatus field isolator, circulator such as Aeronautics and Astronautics, radar, radio station, broadcast communication.
More than 1 watt of 30dB attenuator of a kind of aluminium oxide ceramic substrate that the embodiment of the invention provided has been carried out detailed introduction; For one of ordinary skill in the art; According to the thought of the embodiment of the invention, the part that on embodiment and range of application, all can change, 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. 1 watt of 30dB attenuator of an aluminium oxide ceramic substrate; It is characterized in that: it comprises the aluminum oxide substrate of a 2*3.5*0.635MM; The back up of said aluminum oxide substrate has back of the body conducting shell; The front of said aluminum oxide substrate is printed with lead and membranaceous resistance, and said lead connects said membranaceous resistance and is connected to form T type attenuator circuit.
2. 1 watt of 30dB attenuator of aluminium oxide ceramic substrate according to claim 1 is characterized in that: said back of the body conducting shell and lead are formed by the conductive silver paste printing, and said resistance is formed by the resistance slurry printing.
3. 1 watt of 30dB attenuator of aluminium oxide ceramic substrate according to claim 1, it is characterized in that: the upper surface of said lead and glass protection film also is printed with double-deck black protective film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102160792A CN102709633A (en) | 2012-06-28 | 2012-06-28 | 1-watt 30dB attenuation sheet of aluminum oxide ceramic substrate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102160792A CN102709633A (en) | 2012-06-28 | 2012-06-28 | 1-watt 30dB attenuation sheet of aluminum oxide ceramic substrate |
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| CN102709633A true CN102709633A (en) | 2012-10-03 |
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Family Applications (1)
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| CN2012102160792A Pending CN102709633A (en) | 2012-06-28 | 2012-06-28 | 1-watt 30dB attenuation sheet of aluminum oxide ceramic substrate |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102361127A (en) * | 2011-09-08 | 2012-02-22 | 苏州市新诚氏电子有限公司 | SMT (Surface Mount Technology) type load sheet (30W) using alumina ceramic substrate |
| CN102361123A (en) * | 2011-09-08 | 2012-02-22 | 苏州市新诚氏电子有限公司 | 20W3dB attenuating piece of aluminium nitride ceramic substrate |
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2012
- 2012-06-28 CN CN2012102160792A patent/CN102709633A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102361127A (en) * | 2011-09-08 | 2012-02-22 | 苏州市新诚氏电子有限公司 | SMT (Surface Mount Technology) type load sheet (30W) using alumina ceramic substrate |
| CN102361123A (en) * | 2011-09-08 | 2012-02-22 | 苏州市新诚氏电子有限公司 | 20W3dB attenuating piece of aluminium nitride ceramic substrate |
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Application publication date: 20121003 |