CN202259628U

CN202259628U - 60W loading sheet of aluminum nitride ceramic substrate with impedance of 50Ohm

Info

Publication number: CN202259628U
Application number: CN 201120335462
Authority: CN
Inventors: 郝敏
Original assignee: Suzhou New Chengshi Electronic Co Ltd
Current assignee: Suzhou New Chengshi Electronic Co Ltd
Priority date: 2011-09-08
Filing date: 2011-09-08
Publication date: 2012-05-30
Anticipated expiration: 2021-09-08

Abstract

The utility model discloses a 60W loading sheet of an aluminum nitride ceramic substrate with impedance of 50Ohm. The 60W loading sheet of the aluminum nitride ceramic substrate with impedance of 50Ohm comprises an aluminum nitride substrate of 4*4*1mm, wherein the back surface of the aluminum nitride substrate is printed with a back guide layer and the front surface of the aluminum nitride substrate is printed with a resistor and a guide line; the guide line is connected with the resistor to form a load circuit; the grounding end of the load circuit is electrically connected with the back guide layer; and the resistor is printed with a glass protective film. The 60W loading sheet of the aluminum nitride ceramic substrate with impedance of 50Ohm is further optimized on the basis of the design on a 50W loading sheet; the grounding end is arranged at the side edge of a bonding pad rather than the opposite of the bonding pad, so that more space is kept out, the area of the resistor is enlarged, and the power is increased 20% on the substrate with the same size; compared with the common size of an aluminum nitride loading sheet with the same power, the size of the loading sheet is reduced close to one third; and meanwhile, good VSWR (Voltage Standing Wave Ratio) performance is provided so as to meet the demands of the market. Under the condition that the production dimension specification of the existing loading sheet of the aluminum nitride substrate is more centralized and is not changed, the 60W loading sheet of the aluminum nitride ceramic substrate with impedance of 50Ohm pays more attention to market orientation, realizes the engagement of different powers between aluminum nitride products by different designs, provides various choices for customers, and reflects the advantages of high cost performance and product diversification.

Description

Impedance is 50 Ω aluminium nitride ceramics substrates, 60 tile load sheets

Technical field

The utility model relates to a kind of aluminium nitride ceramics substrate carrier sheet, and particularly a kind of impedance is 50 Ω aluminium nitride ceramics substrates, 60 tile load sheets.

Background technology

Aluminium nitride ceramics substrate carrier sheet is mainly used in the power that in communication base station, absorbs reverse input in the communication component; The small-power product all is as substrate with aluminium oxide ceramics before; High-power product all be with beryllium oxide ceramics as substrate, the high power load sheet of aluminium nitride ceramics substrate belongs to new industry, so exist the phenomenon of concentrating relatively of carrier sheet dimensions both at home and abroad; The diversification production that does not present customer orientation; Cause generally using on the market high gauge grade to substitute the demand of low specification, when needing the carrier sheet of 50W or 60W, just used the 100W carrier sheet of main flow.On substrate size, also generally select for use more single size to accomplish different separately designs and manufacture enterprise simultaneously, this disadvantage of bringing is exactly the relative weakening of price advantage and the relative unicity that product is selected.Limited the design of client's product simultaneously, because the size of the carrier sheet putting position back of the body has limited, however along with continuous development, the diversity of customer requirement self product design, the dimensions that this will the negate slide glass need present the diversity development.Reach the needs that bigger power also is existing market with littler size simultaneously.

The utility model content

Deficiency to above-mentioned prior art; The technical problem that the utility model will solve provides a kind of aluminium nitride substrate carrier sheet that can bear 60W power; Dimensional requirement can satisfy 4*4*1mm; Performance requirement can satisfy the existing market demand, is issued to the power of 60W in the situation of original 50W size constancy.

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

A kind of impedance is 50 Ω aluminium nitride ceramics substrates, 60 tile load sheets; It comprises the aluminium nitride substrate of a 4*4*1mm, and the back up of said aluminium nitride substrate has back of the body conducting shell, and the front of said aluminium nitride substrate is printed with resistance and lead; Said lead connects said resistance and forms load circuit; The earth terminal of said load circuit is electrically connected with said back of the body conducting shell, and said earth terminal is located at the pad side, rather than the opposite; Reserving more space has increased the area of resistance, is printed with glass protection film on the said resistance.

Preferably, the upper surface of said lead and glass protection film also is printed with one deck black protective film.

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

Technique scheme has following beneficial effect: relying on ripe designed capacity to make the impedance of this structure is that 50 Ω aluminium nitride ceramics substrates, 60 tile load sheets have good VSWR performance; Power on the aluminium nitride ceramics substrate of 4*4*1mm reaches 60W; Performance has satisfied the market demand; Enriched the aluminium nitride product specification; Realized the linking of different capacity between the aluminium nitride product, and reduced cost, made the client have more selection to obtain the higher product of cost performance through the dimension shrinks of substrate.

Above-mentioned explanation only is the general introduction of the utility model technical scheme, in order more to know the technological means of understanding the utility model, and can implement according to the content of specification, below with the preferred embodiment of the utility model and conjunction with figs. specify as after.The embodiment of the utility model is provided by following examples and accompanying drawing thereof in detail.

Description of drawings

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

Embodiment

Describe in detail below in conjunction with the preferred embodiment of accompanying drawing to the utility model.

As shown in Figure 1; This impedance is the aluminium nitride substrate 1 that 50 Ω aluminium nitride ceramics substrates, 60 tile load sheets comprise a 4*4*1mm; The back up of aluminium nitride substrate 1 has back of the body conducting shell, and the front of aluminium nitride substrate 1 is printed with resistance 3 and lead 2, and lead 2 connects resistance 3 and forms load circuit; The earth terminal of load circuit is electrically connected through the silver slurry with back of the body conducting shell, thereby makes the load circuit earth-continuity.Back of the body conducting shell and lead 2 are formed by the conductive silver paste printing, and resistance 3 is formed by the resistance slurry printing.Be printed with glass protection film 4 on the resistance 3.The upper surface of lead 2 and glass protection film 4 also is printed with one deck black protective film 5.

The impedance of this structure is that 50 Ω aluminium nitride ceramics substrates, 60 tile load sheets have good VSWR performance; On the aluminium nitride ceramics substrate of 4*4*1mm, be located at the pad side to earth terminal, rather than the opposite, reserve the area that more space has increased resistance; Make power reach 60W; Performance has satisfied the market demand, has enriched the aluminium nitride product specification, has realized the linking of different capacity between the aluminium nitride product; And reduced cost through the dimension shrinks of substrate, make the client have more selection to obtain the higher product of cost performance.Power according to this aluminium nitride ceramics substrate carrier sheet of detection can be born is comparatively stable, can reach the requirement that communication period absorbs required power fully,

More than a kind of impedance that the utility model embodiment is provided be that 50 Ω aluminium nitride ceramics substrates, 60 tile load sheets have carried out detailed introduction; For one of ordinary skill in the art; According to the thought of the utility model embodiment, the part that on embodiment and range of application, all can change, in sum; This description should not be construed as the restriction to the utility model, and all any changes of being made according to the utility model design philosophy are all within the protection range of the utility model.

Claims

1. an impedance is 50 Ω aluminium nitride ceramics substrates, 60 tile load sheets; It is characterized in that: it comprises the aluminium nitride substrate of a 4*4*1mm; The back up of said aluminium nitride substrate has back of the body conducting shell, and the front of said aluminium nitride substrate is printed with resistance and lead, and said lead connects said resistance and forms load circuit; The earth terminal of said load circuit is electrically connected with said back of the body conducting shell, is printed with glass protection film on the said resistance.

2. impedance according to claim 1 is 50 Ω aluminium nitride ceramics substrates, 60 tile load sheets, and it is characterized in that: the upper surface of said lead and glass protection film also is printed with one deck black protective film.

3. impedance according to claim 1 is 50 Ω aluminium nitride ceramics substrates, 60 tile load sheets, and it is characterized in that: said back of the body conducting shell and lead are formed by the conductive silver paste printing, and said resistance is formed by the resistance slurry printing.