CN203950896U

CN203950896U - Decay to 100 watts of aluminum nitride attenuation sheets of 24dB

Info

Publication number: CN203950896U
Application number: CN201420283754.8U
Authority: CN
Inventors: 不公告发明人
Original assignee: Suzhou New Chengshi Electronic Co Ltd
Current assignee: Suzhou Xincheng communication electronic Limited by Share Ltd
Priority date: 2014-05-29
Filing date: 2014-05-29
Publication date: 2014-11-19
Anticipated expiration: 2024-05-29

Abstract

The utility model discloses 100 watts of aluminum nitride attenuation sheets of a kind of 24dB of decaying to; it comprises the aluminium nitride substrate of a 5.7*8.9*1.0mm; the back up of described aluminium nitride substrate has back of the body conducting shell; the front of described aluminium nitride substrate is printed with resistance and wire; described wire connects described resistance and forms attenuator circuit; the earth terminal of described attenuator circuit is connected with described back of the body conducting shell; on described resistance, be printed with glass protection film; on described decay circuit, be printed with two-layer diaphragm, between described two-layer diaphragm, be printed with one deck dielectric layer; 100 watts of attenuators of the 24dB of this structure have good VSWR performance and attenuation accuracy, power on the aluminum nitride ceramic substrate of 5.7*8.9*1.0mm reaches 100W, make its characteristic break through 3G simultaneously, make the aluminum nitride ceramic substrate scope of application of this size wider, also more can carry out good mating with equipment, be applicable to current 4G network.

Description

Decay to 100 watts of aluminum nitride attenuation sheets of 24dB

Technical field

The utility model designs a kind of attenuator, particularly a kind of 100 watts of aluminum nitride attenuation sheets that decay to 24dB.

Background technology

Most communication base station is all that utilizing high power pottery carrier sheet absorbs reverse input power in communication component; high-power ceramic carrier sheet can only merely consume and absorb unnecessary power; and cannot do real-time monitoring to the working condition of base station; in the time that base station work is broken down, cannot judge in time, equipment is not had to protective effect.And attenuator not only can absorb the power of oppositely inputting in communication component in communication base station, and can extract part signal in communication component, to monitoring in real time base station, thereby equipment be formed to effective protection.

The attenuation accuracy of the aluminium nitride ceramics attenuator of current domestic 100W-24dB can only accomplish that in 1G frequency, minority can be accomplished 2G mostly, and the more difficult control of the VSWR of attenuation accuracy and equipment configuration.And market is very high to the requirement of attenuation accuracy, the attenuator that we wish is a power consumption component, can not have impact to two terminal circuits, that is to say, all mates with two terminal circuits.When attenuation accuracy or VSWR do not reach while requiring, the signal that output obtains does not meet actual requirement.Attenuator is in the market in the time using frequency range higher than 2G, and its attenuation accuracy does not reach requirement, and it is large that return loss becomes, and can not meet frequency range application requirements more than 2G.

At present domestic 100W-24dB attenuator is because of the reason of design, and attenuation accuracy does not reach requirement, and anti-high and low-temp impact property is poor, and when completing after high/low-temperature impact experiment, resistance and attenuation accuracy can deflect away from the scope of actual requirement.

Summary of the invention

For above-mentioned the deficiencies in the prior art, the technical problems to be solved in the utility model is to provide a kind of resistance and meets 50.4 ± 3% Ω, in 3G frequency range, attenuation accuracy is 24 ± 0.8dB, standing wave requires to meet 1.20:1max in 3G frequency range, can meet the application requirements of current 4G network and can bear 100 watts of aluminum nitride attenuation sheets that decay to 24dB of 100 watts of power.

For solving the problems of the technologies described above, the utility model adopts following technical scheme:

100 watts of aluminum nitride attenuation sheets that decay to 24dB, it comprises the aluminium nitride substrate of a 5.7*8.9*1.0mm, the back up of described aluminium nitride substrate has back of the body conducting shell, the front of described aluminium nitride substrate be printed with resistance and

Wire; described wire connects described resistance and forms attenuator circuit, and the earth terminal of described attenuator circuit is connected with described back of the body conducting shell, on described resistance, is printed with glass protection film; on described decay circuit, be printed with two-layer diaphragm, between described two-layer diaphragm, be printed with one deck dielectric layer.

Preferably, the upper surface of described wire and glass protection film is printed with double-deck acid and alkali-resistance resin protection film.

Preferably, described back of the body conducting shell and wire are formed by conductive silver paste printing, and described resistance is formed by resistance slurry printing.

Technique scheme has following beneficial effect: this attenuator is using the aluminium nitride substrate of 8.9*5.7*1MM as benchmark, on the first black protective film, print additional one deck dielectric layer, can effectively improve like this attenuation accuracy of attenuator, make this attenuator under the dimensions of above-mentioned aluminium nitride substrate, can arrive resistance 50.4 ± 3% Ω, in 3G frequency range, attenuation accuracy is 24 ± 0.8dB, standing wave requires to meet 1.20:1max in 3G frequency range, can meet the application requirements of current 4G network and the technical requirement that can bear the power of 100 watts, break the situation that original attenuator can only be applied to low frequency, make attenuator can be applied to the network of 4G, fill up the domestic blank that can not produce 100 watts of 24dB attenuators.

Above-mentioned explanation is only the general introduction of technical solutions of the utility model, in order to better understand technological means of the present utility model, and can be implemented according to the content of specification, below with preferred embodiment of the present utility model and coordinate accompanying drawing to be described in detail as follows.Embodiment of the present utility model is provided in detail by following examples and accompanying drawing thereof.

Brief description of the drawings

Fig. 1 is the structural representation of the utility model embodiment.

Embodiment

Below in conjunction with accompanying drawing, preferred embodiment of the present utility model is described in detail.

As shown in Figure 1, these 100 watts of aluminum nitride attenuation sheets that decay to 24dB comprise the aluminium nitride substrate 1 of a 8.9*5.7*1MM, the back up of aluminium nitride substrate 1 has silver slurry back of the body conducting shell, the front of aluminium nitride substrate 1 is printed with silver slurry wire 2 and resistance R 1, R2, R3, R4 and R5, silver slurry wire 2 connects above-mentioned resistance R 1, R2, R3, R4, R5 and forms attenuator circuit, the earth terminal of attenuator circuit is starched with back of the body conducting shell and is electrically connected by silver, thereby makes attenuator circuit conducting.Back of the body conducting shell, wire are formed by the conductive silver paste printing that needs high temperature sintering, and described resistance is formed by resistance slurry printing.

On resistance, R1, R2, R3, R4, R5 are printed with glass protection film 3, on glass protection film 3 and silver slurry wire 2, are printed with on the first black protective film 4, the first black protective films 4 and are printed with a dielectric layer 6.On dielectric layer 6, be printed with on the second black protective film 5, the second black protective films 5 and can print brand and model.The first black protective film, the second black protective film can play to attenuator circuit the effect of duplicate protection.

The resistance of this attenuator input and ground connection is 50.4 ± 3% Ω, and the resistance of output and ground is 50.4 ± 3% Ω.Signal enters attenuator from input, through R1, R2, R5, R3, the progressively absorption of R4 to power, exports actual needed signal from output from output.

This attenuator is using the aluminium nitride substrate of 8.9*5.7*1MM as benchmark; on the first black protective film, print additional one deck dielectric layer; can effectively improve like this attenuation accuracy of attenuator; adopt this structure can increase resistance R 3 simultaneously; the resistor area of R4; its anti-high and low-temp impact property is increased, and then avoided the risk that high temperature breaks down to the quenching wound of resistance in the time of output welding lead.Make this attenuator under the dimensions of above-mentioned aluminium nitride substrate, can arrive resistance 50.4 ± 3% Ω, in 3G frequency range, attenuation accuracy is 24 ± 0.8dB, standing wave requires to meet 1.20:1max in 3G frequency range, can meet the application requirements of current 4G network and the technical requirement that can bear the power of 100 watts, break the situation that original attenuator can only be applied to low frequency, make attenuator can be applied to 4G network, filled up the domestic blank that can not produce 100 watts of 24dB attenuators.

100 watts of aluminum nitride attenuation sheets of a kind of 24dB of decaying to above the utility model embodiment being provided are described in detail; for one of ordinary skill in the art; according to the thought of the utility model embodiment; all will change in specific embodiments and applications; in sum; this description should not be construed as restriction of the present utility model, and all any changes of making according to the utility model design philosophy are all within protection range of the present utility model.

Claims

1. one kind decays to 100 watts of aluminum nitride attenuation sheets of 24dB; it is characterized in that: it comprises the aluminium nitride substrate of a 5.7*8.9*1.0mm; the back up of described aluminium nitride substrate has back of the body conducting shell; the front of described aluminium nitride substrate is printed with resistance and wire; described wire connects described resistance and forms attenuator circuit; the earth terminal of described attenuator circuit is connected with described back of the body conducting shell; on described resistance, be printed with glass protection film; on described decay circuit, be printed with two-layer diaphragm, between described two-layer diaphragm, be printed with one deck dielectric layer.

2. 100 watts of aluminum nitride attenuation sheets that decay to 24dB according to claim 1, is characterized in that: the upper surface of described wire and glass protection film is printed with double-deck acid and alkali-resistance resin protection film.

3. 100 watts of aluminum nitride attenuation sheets that decay to 24dB according to claim 1, is characterized in that: described back of the body conducting shell and wire are formed by conductive silver paste printing, and described resistance is formed by resistance slurry printing.