CN206022583U

CN206022583U - A kind of ceramic dielectric filters six work devices

Info

Publication number: CN206022583U
Application number: CN201620851840.3U
Authority: CN
Inventors: 方超; 刘银燕
Original assignee: Chizhou Xin'an Information Technology Co Ltd
Current assignee: Chizhou Xin'an Information Technology Co Ltd
Priority date: 2016-08-08
Filing date: 2016-08-08
Publication date: 2017-03-15
Anticipated expiration: 2026-08-08

Abstract

The utility model is related to a kind of ceramic dielectric and filters six work devices, belongs to field of microwave communication.Including filter, dielectric, shield shell, pcb board harmony table duplexer, the filter, dielectric includes the ceramic dielectric of a 37M powder and three 20B powders die casting, the dielectric duplexer of sintering respectively, and the sound table duplexer is high low pass；Filter, dielectric harmony table duplexer is welded on pcb board, and shield shell is welded on filter, dielectric.The utility model is combined into six work devices by the duplexer on pcb board, have the advantages that small volume, multiband, low cost.

Description

A kind of ceramic dielectric filters six work devices

Technical field

The utility model is related to field of microwave communication, more particularly to a kind of ceramic dielectric filters six work devices.

Background technology

In field of microwave communication, wave filter is more and more weighed by production firm as a kind of important electronic device Depending on.In recent years, customer equipment requirement small volume, low cost, index request more and more higher for wave filter, while small volume Multiplefrequency mixer is a great demand in market, and former medium cavity multiplefrequency mixer volume is too big, strictly limits visitor Family is needed to our production.

Utility model content

For the problem of shortcomings and deficiencies in prior art, the utility model proposes a kind of ceramic dielectric filters six works Device, have the advantages that small volume, multiband, low cost.

The utility model solves the technical scheme adopted by its technical problem：

A kind of ceramic dielectric filters six work devices, including filter, dielectric, shield shell, pcb board harmony table duplexer, the filter Ripple medium includes the ceramic dielectric of a 37M powder and three 20B powders die casting, the dielectric duplexer of sintering respectively, institute It is high low pass to state sound table duplexer；Filter, dielectric harmony table duplexer is welded on pcb board, and shield shell is welded on filtering and is situated between In matter.

Further, the dielectric duplexer is ten hole ceramic dielectrics, and its outer surface has silver layer, by laser machine in medium The performance pattern and input, output electrode for designing is carved with end face silver layer.

Further, the shield shell is machined into using brass, electroplate.

Further, the pcb board is formed using material FR4 cuttings, surface gold-plating.

Further, the position for welding filter, dielectric on the pcb board is equipped with loading layer.

Further, the loading layer adopts solder(ing) paste.

The utility model has the advantages that：Pcb board surface gold-plating has more preferable shield effectiveness；Using duplexer Synthesize six work devices, the purpose of do so be in order to design during difficulty can reduce, the volume of demand is comparatively less A bit.

Description of the drawings

Fig. 1 is the utility model contour structures and principle schematic.

Specific embodiment

With reference to specific embodiment, the utility model is expanded on further.It should be understood that these embodiments are merely to illustrate this Utility model rather than restriction scope of the present utility model.In addition, it is to be understood that in the content for having read the utility model instruction Afterwards, those skilled in the art can be made various changes or modifications to the utility model, and these equivalent form of values equally fall within this Shen Please appended claims limited range.

As shown in figure 1, a kind of ceramic dielectric filters six work devices, including filter, dielectric 1, shield shell 2,3 harmony table of pcb board Duplexer 4, the filter, dielectric 1 include that die casting, sintering are formed respectively for the ceramic dielectric of a 37M powder and three 20B powders Dielectric duplexer, the sound table duplexer 4 is for high low pass；1 harmony table duplexer 4 of filter, dielectric is welded on pcb board 3, Shield shell 2 is welded on filter, dielectric 1.

Further, the shield shell 2 is machined into using brass, electroplate.

Further, the pcb board 3 is formed using material FR4 cuttings, surface gold-plating.

Further, the position for welding filter, dielectric 1 on the pcb board 3 is equipped with loading layer.

Further, the loading layer adopts solder(ing) paste.

Specifically, the selection of sound table duplexer 4 according to the bandwidth required in our designs selecting, our low side frequencies here Rate is 880-960, high-end 1710-2170, so the requirement bandwidth of the 4 high low side of sound table duplexer of our selections will be according to upper The frequency range in face is selecting, and selects insertion loss smaller as far as possible, and little with interior ripple, specific requirement is how many, according to client's Require to select, what we selected here is that insertion loss is less than 1.0, is less than 0.5 with interior ripple, and the selection of sound table duplexer 4 is right Whole design plays a decisive role, so we must be prudent when selecting, selection as far as possible meets us and requires most Alright.In Fig. 1 11,12,13 for coupling bypass circuit, according in our design processes actual conditions select, here I 12,13 two places have selected the electric capacity of 0.5PF, 11 need not weld bypass circuit.14,15,16,17,18,19 is another for us Outer bypass circuit all the way, selects the circuit that we need all in accordance with actual situation, here 17 select be 4.7nF electricity Sense, 19 select be 1.5PF electric capacity, none-disk terminal circuit requirements at 14,15,16,18.

The utility model is combined into six work devices by duplexer, have the advantages that small volume, multiband, low cost.

Claims

1. a kind of ceramic dielectric filters six work devices, it is characterised in that：Including filter, dielectric, shield shell, pcb board harmony table duplex Device, the filter, dielectric include the ceramic dielectric of a 37M powder and three 20B powders die casting, the medium of sintering respectively Duplexer, the sound table duplexer are high low pass；Filter, dielectric harmony table duplexer is welded on pcb board, and shield shell is welded It is connected on filter, dielectric.

2. a kind of ceramic dielectric according to claim 1 filters six work devices, it is characterised in that：The dielectric duplexer is ten Hole ceramic dielectric, its outer surface have silver layer, by laser machine be carved with medium end face silver layer the performance pattern for designing with And input, output electrode.

3. a kind of ceramic dielectric according to claim 1 filters six work devices, it is characterised in that：The shield shell is using yellow Copper is machined into, electroplate.

4. a kind of ceramic dielectric according to claim 1 filters six work devices, it is characterised in that：The pcb board adopts material FR4 cuttings are formed, surface gold-plating.

5. a kind of ceramic dielectric according to claim 1 filters six work devices, it is characterised in that：Welding filter on the pcb board The position of ripple medium is equipped with loading layer.

6. a kind of ceramic dielectric according to claim 5 filters six work devices, it is characterised in that：The loading layer adopts scolding tin Cream.