CN104241757A - 2-watt 6dB attenuation plate with high-thermal-conductivity aluminum oxide ceramic substrate - Google Patents
2-watt 6dB attenuation plate with high-thermal-conductivity aluminum oxide ceramic substrate Download PDFInfo
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- CN104241757A CN104241757A CN201410231681.2A CN201410231681A CN104241757A CN 104241757 A CN104241757 A CN 104241757A CN 201410231681 A CN201410231681 A CN 201410231681A CN 104241757 A CN104241757 A CN 104241757A
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Abstract
The invention discloses a 2-watt 6dB attenuation plate with a high-thermal-conductivity aluminum oxide ceramic substrate. The 2-watt 6dB attenuation plate is an energy consumption radio frequency/microwave component and comprises the high-thermal-conductivity aluminum oxide substrate, the back face of the aluminum oxide substrate is printed with a back conducting layer, the front face of the aluminum oxide substrate is printed with wires, five film-like resistors are printed between the wires, two of the five film-like resistors have the same resistance value, the film-like resistors play a role in attenuating electric signals through a series-parallel circuit, and a required attenuation value is obtained by controlling the resistance values of the film-like resistors. The attenuation plate is small in size, low in cost and insertion loss, small in standing-wave ratio, high in attenuation precision, wide in frequency use range, compatible to large scale integrated circuit production processes, and suitable for mass production.
Description
Technical field
The present invention relates to a kind of aluminium oxide ceramics attenuator, particularly the high thermal conductance aluminium oxide ceramic substrate of one 2 watts of 6dB attenuators.
Background technology
Attenuator is less than the incident power of input port and the dual-port device designed for the power making output port provide, and be a kind of energy loss RF/Microwave element, attenuation describes the diminish degree of power by power after attenuator.The size of attenuation is determined by the materials and structures forming attenuator
The attenuator being integrated with five membranaceous resistive arrangement is at present widely used in the apparatus field such as Aeronautics and Astronautics, radar, radio station, broadcast communication.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.
Due to the external research and development to like product and manufacture than domestic start to walk Zao, status that product line or product performance are all had the advantage.On domestic market, existing attenuator attenuation accuracy is low simultaneously, 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 impedance and meets 83.5 ± 3% Ω, within 3G frequency range, attenuation accuracy is 6 ± 0.5dB, standing wave requires that input, output are within 1.2, high thermal conductance aluminium oxide ceramic substrate 2 watts of 6dB attenuators that the application that can meet current 3G network requires, 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 thermal conductance aluminium oxide ceramic substrate 2 watts of 6dB attenuators, it comprises a high heat conduction aluminum oxide substrate, the back up of described aluminum oxide substrate has back of the body conducting shell, the front of described aluminum oxide substrate is printed with wire, be printed with 5 membranaceous resistance between described wire, described 5 membranaceous resistance have two resistance values identical, and described membranaceous resistance plays attenuation by series-parallel circuit to the signal of telecommunication, by controlling the resistance value of described membranaceous resistance, obtain the pad value needed.
Preferably, described attenuator circuit starches earth-continuity by low-temperature silver.
Preferably, 5 membranaceous resistance of described circuit are all printed on one deck high temp glass diaphragm.
Technique scheme has following beneficial effect: this high thermal conductance aluminium oxide ceramic substrate 2 watts of 6dB attenuator volumes are little, cost is low, filter with low insertion loss, standing-wave ratio is little, attenuation accuracy is high, frequency usage scope is wide, and compatible with large scale integrated circuit production technology, applicable production in enormous quantities 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, 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 thermal conductance aluminium oxide ceramic substrate 2 watts of 6dB attenuators comprise a high heat conduction aluminum oxide substrate 1, and the back up of high heat conduction aluminum oxide substrate 1 has conductor layer, and conductor layer forms by printing the printing of silver slurry.The front of high heat conduction aluminum oxide substrate 1 is printed with resistance R1, R2, R3, R4, R5 and silver slurry wire 2; resistance R1, R2, R3, R4, R5 are coupled together the attenuator circuit of formation one π type structure by silver slurry wire 2; resistance R1, R2, R3, R4, R5 are all printed with glass protection film 3, and glass protection film 3 is for the protection of resistance R1, R2, R3, R4, R5.Also be printed with one deck black protective film 4 at the whole circuit i.e. upper surface of silver slurry wire 2 and glass protection film 3, black protective film 4 can carry out bag to whole circuit to be protected.
This high thermal conductance aluminium oxide ceramic substrate 2 watts of 6dB attenuators require that the impedance of input and ground connection is 83.5 ± 3% Ω, and the impedance of output and ground is 83.5 ± 3% Ω.Signal input part enters attenuator, through membranaceous resistance R1, R2, R5, R3, R4 progressively absorption to power, exports the signal required for reality from output.
This high thermal conductance aluminium oxide ceramic substrate 2 watts of 6dB attenuator volumes are little, cost is low, filter with low insertion loss, standing-wave ratio is little, attenuation accuracy is high, frequency usage scope is wide, and compatible with large scale integrated circuit production technology, applicable production in enormous quantities 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 the high thermal conductance aluminium oxide ceramic substrate of one 2 watts of 6dB 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. one kind high thermal conductance aluminium oxide ceramic substrate, 2 watts of 6dB attenuators, it is characterized in that: it comprises a high heat conduction aluminum oxide substrate, the back up of described aluminum oxide substrate has back of the body conducting shell, the front of described aluminum oxide substrate is printed with wire, be printed with 5 membranaceous resistance between described wire, described 5 membranaceous resistance have two resistance values identical, and described membranaceous resistance plays attenuation by series-parallel circuit to the signal of telecommunication, by controlling the resistance value of described membranaceous resistance, obtain the pad value needed.
2. high thermal conductance aluminium oxide ceramic substrate according to claim 12 watts of 6dB attenuators, is characterized in that: described attenuator circuit starches earth-continuity by low-temperature silver.
3. high thermal conductance aluminium oxide ceramic substrate according to claim 12 watts of 6dB attenuators, is characterized in that: 5 membranaceous resistance of described circuit are all printed on one deck high temp glass diaphragm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410231681.2A CN104241757A (en) | 2014-05-28 | 2014-05-28 | 2-watt 6dB attenuation plate with high-thermal-conductivity aluminum oxide ceramic substrate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410231681.2A CN104241757A (en) | 2014-05-28 | 2014-05-28 | 2-watt 6dB attenuation plate with high-thermal-conductivity aluminum oxide ceramic substrate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104241757A true CN104241757A (en) | 2014-12-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410231681.2A Pending CN104241757A (en) | 2014-05-28 | 2014-05-28 | 2-watt 6dB attenuation plate with high-thermal-conductivity aluminum oxide ceramic substrate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104241757A (en) |
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2014
- 2014-05-28 CN CN201410231681.2A patent/CN104241757A/en active Pending
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20141224 |
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| WD01 | Invention patent application deemed withdrawn after publication |