CN203481350U - Beryllia ceramic plate 5W3db attenuation sheet - Google Patents
Beryllia ceramic plate 5W3db attenuation sheet Download PDFInfo
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- CN203481350U CN203481350U CN201320595415.9U CN201320595415U CN203481350U CN 203481350 U CN203481350 U CN 203481350U CN 201320595415 U CN201320595415 U CN 201320595415U CN 203481350 U CN203481350 U CN 203481350U
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- beryllium oxide
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- 5w3db
- resistance
- attenuators
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Abstract
The utility model discloses a beryllia ceramic plate 5W3db attenuation sheet including a beryllia substrate of 9*19*0.6mm, a back conductive layer is printed on the back side of the beryllia substrate and a lead and a membrane-type resistor are printed on the right side, and the lead and the membrane-type resistor are connected to form a T-shaped attenuation circuit. The attenuation sheet is small in size, stable in performance, high in attenuation precision, and can be widely applied to the fields of aviation and aerospace.
Description
Technical field
The invention belongs to microwave communication equipment field, particularly 5 watts of 3db attenuators of a kind of beryllium oxide ceramics plate.
Background technology
The attenuator of at present integrated three membranaceous resistive arrangement is widely used in the apparatus field such as Aeronautics and Astronautics, radar, radio station, broadcast, communication.Working load sheet can only simple consumption absorb unnecessary power; and use attenuator can also extract at the power that absorbs oppositely input the signal needing simultaneously, analyze; and on high-frequency circuit, adjust power level, decoupling, has played protective effect to relevant device.
Due to more Zao than domestic starting with manufacture to the research and development of like product abroad, the status of all having the advantage on product line or product performance.On domestic market, existing attenuator attenuation accuracy is low simultaneously, and frequency range relative narrower that can be practical.The attenuator that we wish 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 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 impedance and meets 50 ± 0.5 Ω, in 3G frequency range, attenuation accuracy is 3 ± 0.5dB, standing wave requires input, output in 1.1, can meet 5 watts of 3db attenuators of beryllium oxide ceramics plate 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:
5 watts of 3db attenuators of beryllium oxide ceramics plate comprise that one is of a size of a beryllium oxide substrate of 9*19*0.6mm, and the back up of described beryllium oxide substrate has back of the body conducting shell, and front is printed with wire and membranaceous resistance, and described wire connects membranaceous resistance and forms T-shaped attenuator circuit.
Preferably, on described membranaceous resistance, be printed with resistance protection film.
Preferably, described attenuator circuit is symmetrical along the center line of beryllium oxide substrate.
Technique scheme has following beneficial effect: this beryllium oxide ceramics pan tile 3db attenuator is the state in a full symmetric by attenuator circuit, volume is little, high frequency characteristics is good, stable and reliable for performance easy for installation, resistance accuracy and attenuation accuracy are high, the stability of circuit gets a promotion, having broken original attenuator can only be for the situation of low frequency, make 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.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the preferred embodiments of the present invention are introduced.
As shown in the figure, 5 watts of 3db attenuators of this beryllium oxide ceramics plate comprise that one is of a size of the beryllium oxide substrate 1 of 9*19*0.6mm, the back up of beryllium oxide substrate 1 has back of the body conducting shell, front is printed with wire 2 and membranaceous resistance R 1, R2, R3, membranaceous resistance R 1, R2, R3 are connected to form T-shaped attenuator circuit by wire, attenuator circuit is starched with back of the body conducting shell and is electrically connected to by silver, thereby makes attenuator circuit earth-continuity.This attenuator circuit is symmetrical along the center line of beryllium oxide substrate; on membranaceous resistance R 1, R2, R3, be printed with transparent high temperature resistant resistance protection film 3; the upper surface of wire 2 and resistance protection film 3 is also printed with one deck black protective film 4, can form protection to wire 2 and membranaceous resistance R 1, R2, R3 like this.
It is 50 ± 0.5 Ω that 5 watts of 3db attenuators of this beryllium oxide ceramics plate require the impedance of input and earth terminal, and the impedance of output and ground is 50 ± 0.5 Ω.Signal input part enters attenuator, through membranaceous resistance R 1, R2, the R3 progressively absorption to power, from the actual needed signal of output output.
5 watts of 3db attenuators of this beryllium oxide ceramics plate using be of a size of 9*19*0.6mm beryllium oxide ceramics as substrate, volume is little, high frequency characteristics is good, stable performance and reliably easy for installation, resistance accuracy and attenuation accuracy are high, the stability of circuit gets a promotion, and has broken the situation that original attenuator can only be applied to low frequency.Simultaneously special design allows the state of attenuator circuit in a full symmetric, the stability of circuit is got a promotion, broken the situation that original attenuator can only be applied to low frequency, make 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.
Although the present invention illustrates with regard to preferred implementation and describes, only it will be understood by those of skill in the art that otherwise exceed claim limited range of the present invention, can carry out variations and modifications to the present invention.
Claims (3)
1. 5 watts of 3db attenuators of a beryllium oxide ceramics plate, it is characterized in that: the beryllium oxide substrate that comprises a 9*19*0.6mm, the back up of described beryllium oxide substrate has back of the body conducting shell, and front is printed with wire and membranaceous resistance, and described wire connects membranaceous resistance and forms T-shaped attenuator circuit.
2. 5 watts of 3db attenuators of beryllium oxide ceramics plate according to claim 1, is characterized in that: on membranaceous resistance, be printed with resistance protection film.
3. 5 watts of 3db attenuators of beryllium oxide ceramics plate according to claim 1, is characterized in that: described attenuator circuit is symmetrical along the center line of described beryllium oxide substrate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320595415.9U CN203481350U (en) | 2013-09-25 | 2013-09-25 | Beryllia ceramic plate 5W3db attenuation sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320595415.9U CN203481350U (en) | 2013-09-25 | 2013-09-25 | Beryllia ceramic plate 5W3db attenuation sheet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203481350U true CN203481350U (en) | 2014-03-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320595415.9U Expired - Fee Related CN203481350U (en) | 2013-09-25 | 2013-09-25 | Beryllia ceramic plate 5W3db attenuation sheet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203481350U (en) |
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2013
- 2013-09-25 CN CN201320595415.9U patent/CN203481350U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140312 Termination date: 20140925 |
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| EXPY | Termination of patent right or utility model |