CN102709650A - 1-watt 23dB attenuation sheet of aluminum oxide ceramic substrate - Google Patents
1-watt 23dB attenuation sheet of aluminum oxide ceramic substrate Download PDFInfo
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- CN102709650A CN102709650A CN2012102166591A CN201210216659A CN102709650A CN 102709650 A CN102709650 A CN 102709650A CN 2012102166591 A CN2012102166591 A CN 2012102166591A CN 201210216659 A CN201210216659 A CN 201210216659A CN 102709650 A CN102709650 A CN 102709650A
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- aluminum oxide
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- attenuation
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Abstract
The invention discloses a 1-watt 23dB attenuation sheet of an aluminum oxide ceramic substrate, which comprises an aluminum oxide substrate, wherein the aluminum oxide substrate is 3.5mm long, 2mm wide and 0.635mm high, a back guide layer is printed at a back face of the aluminum oxide substrate, guide lines and resistors are printed at a front face of the aluminum oxide substrate, the guide lines are connected with the resistors to form an attenuation circuit, the attenuation circuit adopts a symmetric design, an output end and an input end of the attenuation circuit are respectively connected with a pad, and the distance between the pads and the resistors is widened so as to prevent the resistors from being damaged due to quenching. On a scheme design of the attenuation sheet, the resistor area is increased, an attenuation circuit is optimized, the attenuation precision is improved, the application frequency is improved, and the situation that the attenuation sheet only can be originally applied to low frequency is broken through.
Description
Technical field
The present invention relates to a kind of aluminium oxide ceramics attenuator, the attenuator of 1 watt of 23dB 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 23 ± 1dB in the 3G frequency range with interior attenuation accuracy, and standing wave requires input, output in 1.2, can satisfy 1 watt of 23dB 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 23dB 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 resistance, and said lead connects said resistance and is connected to form attenuator circuit, and said attenuator circuit is along the center line symmetry of said aluminum oxide substrate; The output of said attenuator circuit, input are connected with a pad respectively, and said two pads are along the center line symmetry of said aluminum oxide substrate.
Preferably, the spacing of said pad and resistance widens, and has reduced the risk that resistance is quenched and hindered.
Preferably, be printed with transparent resistance protection film on the said resistance.
Technique scheme has following beneficial effect: 1 watt of 23dB attenuator of this aluminium oxide ceramic substrate widens through circuit optimization, has widened the spacing of pad and resistance, has reduced the risk that resistance is quenched and hindered; And let attenuator circuit be in a state of symmetry fully, make the stability of circuit get a promotion, the client does not need painstakingly differentiation input and output in use simultaneously; Greatly facilitate the client; Also reduce the client and caused the generation of defective products to embody the design of hommization fool proof because the input/output terminal welding is wrong aborning, and taken into account each item index of fixed resistance formula attenuator, increased power capacity; Enlarged the scope of product line; Also break the situation that original attenuator can only be applied to low frequency, made attenuator can be applied to the network of 2G-3G, filled up domestic blank.The series product line of the value of differential declines has simultaneously enlarged the scope of application, gives the multiple selection in market.
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 23dB attenuator of this aluminium oxide ceramic substrate comprises the aluminum oxide substrate 1 of a 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, R3 be last to be printed with transparent resistance protection film 3; The upper surface of lead 2 and transparent resistance protection film 3 also is printed with one 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 23dB 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.
1 watt of 23dB attenuator of this aluminium oxide ceramic substrate widens through circuit optimization, has widened the spacing of pad and resistance, has reduced the risk that resistance is quenched and hindered; And let attenuator circuit be in a state of symmetry fully, make the stability of circuit get a promotion, the client does not need painstakingly differentiation input and output in use simultaneously; Greatly facilitate the client; Also reduce the client and caused the generation of defective products to embody the design of hommization fool proof because the input/output terminal welding is wrong aborning, and taken into account each item index of fixed resistance formula attenuator, increased power capacity; Enlarged the scope of product line; Also break the situation that original attenuator can only be applied to low frequency, made attenuator can be applied to the network of 2G-3G, filled up domestic blank.The series product line of the value of differential declines has simultaneously enlarged the scope of application, gives the multiple selection in market.
More than 1 watt of 23dB 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 23dB attenuator of an aluminium oxide ceramic substrate; It is characterized in that: 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 resistance, and said lead connects said resistance and is connected to form attenuator circuit, and said attenuator circuit is along the center line symmetry of said aluminum oxide substrate; The output of said attenuator circuit, input are connected with a pad respectively, and said two pads are along the center line symmetry of said aluminum oxide substrate.
2. 1 watt of 23dB attenuator of aluminium oxide ceramic substrate according to claim 1, it is characterized in that: the spacing of said pad and resistance widens, and has reduced the risk that resistance is quenched and hindered.
3. 1 watt of 23dB attenuator of aluminium oxide ceramic substrate according to claim 1 is characterized in that: be printed with transparent resistance protection film on the said resistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102166591A CN102709650A (en) | 2012-06-28 | 2012-06-28 | 1-watt 23dB attenuation sheet of aluminum oxide ceramic substrate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102166591A CN102709650A (en) | 2012-06-28 | 2012-06-28 | 1-watt 23dB attenuation sheet of aluminum oxide ceramic substrate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102709650A true CN102709650A (en) | 2012-10-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012102166591A Pending CN102709650A (en) | 2012-06-28 | 2012-06-28 | 1-watt 23dB 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 CN2012102166591A patent/CN102709650A/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 |