CN102709645A - 1-watt 18dB attenuation sheet of aluminum oxide ceramic substrate - Google Patents
1-watt 18dB attenuation sheet of aluminum oxide ceramic substrate Download PDFInfo
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- CN102709645A CN102709645A CN2012102165974A CN201210216597A CN102709645A CN 102709645 A CN102709645 A CN 102709645A CN 2012102165974 A CN2012102165974 A CN 2012102165974A CN 201210216597 A CN201210216597 A CN 201210216597A CN 102709645 A CN102709645 A CN 102709645A
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- aluminum oxide
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Abstract
The invention discloses a 1-watt 18dB attenuation sheet of an aluminum oxide ceramic substrate, which comprises an aluminum oxide substrate, wherein a back face of the aluminum oxide substrate is printed with high-temperature conductive silver pulp, a front face of the aluminum oxide substrate is printed with two pads, the pads are respectively connected with a guide line, the guide lines are connected via membrane-shaped resistors, and the resistors are arranged in parallel and in series to form an attenuation circuit. On a design, power bearing capability is fully considered, the 1-watt 18dB attenuation sheet of the aluminum oxide ceramic substrate is a type of matching a capacitor and an inductor, has high frequency and no induction, and can be applied to three generation (3G) frequency ranges.
Description
Technical field
The present invention relates to a kind of aluminium oxide ceramics attenuator, the attenuator of 1 watt of 18dB 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 18 ± 0.8dB in the 3G frequency range with interior attenuation accuracy, and standing wave requires input, output in 1.2, can satisfy 1 watt of 18dB 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 18dB attenuator of a kind of aluminium oxide ceramic substrate; It comprises an aluminum oxide substrate; The back up of said aluminum oxide substrate has high-temperature electric conduction silver slurry, and said aluminum oxide substrate front is printed with two pads, and said pad is connecting lead respectively; Said lead connects through membranaceous resistance, and said resistance is through the connection in series-parallel formation attenuator circuit of arranging.
Preferably, said lead connects said membranaceous resistance and is connected to form T type attenuator circuit.
Preferably, said attenuator circuit is along the center line symmetry of said aluminum oxide substrate.
Preferably, the center line of the said aluminum oxide substrate of said pad symmetry.
Technique scheme has following beneficial effect: 1 watt of 18dB attenuator of this aluminium oxide ceramic substrate is in a state of symmetry fully by attenuator circuit; This small product size is little, and frequency characteristic is good, and the stability of circuit gets a promotion; Power is steady, 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 18dB attenuator of this aluminium oxide ceramic substrate comprises an aluminum oxide substrate 1; 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 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 18dB 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 18dB 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, and the stability of circuit gets a promotion, and power is steady, 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 18dB 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 (4)
1. 1 watt of 18dB attenuator of an aluminium oxide ceramic substrate; It is characterized in that: it comprises an aluminum oxide substrate; The back up of said aluminum oxide substrate has high-temperature electric conduction silver slurry, and said aluminum oxide substrate front is printed with two pads, and said pad is connecting lead respectively; Said lead connects through membranaceous resistance, and said resistance is through the connection in series-parallel formation attenuator circuit of arranging.
2. 1 watt of 18dB attenuator of aluminium oxide ceramic substrate according to claim 1 is characterized in that: said lead connects said membranaceous resistance and is connected to form T type attenuator circuit.
3. 1 watt of 18dB attenuator of aluminium oxide ceramic substrate according to claim 1 is characterized in that: said attenuator circuit is along the center line symmetry of said aluminum oxide substrate.
4. 1 watt of 18dB attenuator of aluminium oxide ceramic substrate according to claim 1 is characterized in that: the center line symmetry of the said aluminum oxide substrate of said pad.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102165974A CN102709645A (en) | 2012-06-28 | 2012-06-28 | 1-watt 18dB attenuation sheet of aluminum oxide ceramic substrate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102165974A CN102709645A (en) | 2012-06-28 | 2012-06-28 | 1-watt 18dB attenuation sheet of aluminum oxide ceramic substrate |
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| Publication Number | Publication Date |
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| CN102709645A true CN102709645A (en) | 2012-10-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012102165974A Pending CN102709645A (en) | 2012-06-28 | 2012-06-28 | 1-watt 18dB 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 CN2012102165974A patent/CN102709645A/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 |