CN203039059U - Cavity filter and radio frequency component - Google Patents
Cavity filter and radio frequency component Download PDFInfo
- Publication number
- CN203039059U CN203039059U CN 201220748633 CN201220748633U CN203039059U CN 203039059 U CN203039059 U CN 203039059U CN 201220748633 CN201220748633 CN 201220748633 CN 201220748633 U CN201220748633 U CN 201220748633U CN 203039059 U CN203039059 U CN 203039059U
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- Prior art keywords
- outer conductor
- circuit board
- connector outer
- connector
- cavity body
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Abstract
The utility model discloses a cavity filter and a radio frequency component. The cavity filter comprises a cavity, a cover plate, an outer conductor of a connector and an inner conductor of the connector, wherein the outer conductor of the connector is connected with the cover plate; the inner conductor of the connector is arranged in the cavity. The inner conductor of the connector passes through the outer conductor of the connector and is connected with an external circuit board. A shielding component used to shield an overflow signal between the outer conductor of the connector and the circuit board is also comprised. The outer conductor of the connector is located in the cavity of the shielding component. A gap is formed between the outer conductor of the connector and the external circuit board. Compared to the prior art, by using the cavity filter of the utility model, the shielding component used to shield the overflow signal between the outer conductor of the connector and the circuit board is arranged; the outer conductor of the connector forms clearance fit with a receiving hole of a base plate or a hollow hole of a cylinder or forms a closed space with an elastic ring plate so as to effectively shield the overflow signal; a dispensing process is omitted and a large amount of manpower, material resources and time are saved; the gap is formed between the outer conductor of the connector and the circuit board so that the circuit board can be prevented from being damaged.
Description
Technical field
The utility model relates to a kind of cavity body filter and radio-frequency devices.
Background technology
Filter is widely used in the communications field as a kind of frequency selection device, especially field of radio frequency communication.In the base station, filter is used for selecting signal of communication, clutter or interference signal that the filtering communication signal frequency is outer.
In order to prevent between the little cavity in the filter cavity signal caused influence to base station system of crosstalking mutually, tend to the signal of each loculus in the cavity of filter is shielded, therefore can be in filter cavity the signalization screening arrangement.Existing signal shielding device of automobile as depicted in figs. 1 and 2, at cavity 101 upper cover cover plates 102, vertical projections and the connector outer conductor 103 that is connected with its one from the described cover plate 102, described connector outer conductor 103 is the cylinder of hollow, itself and substrate 106 opposing end faces are provided with a circle conducting resinl 104, described connector outer conductor 103 is connected with described substrate 106 by described conducting resinl 104, also is provided with circuit board 105 on the described substrate.
In research and practice process to prior art, inventor of the present utility model finds, in the above-mentioned prior art: by enclosing conducting resinl at housing and substrate opposing end faces point one, push down conducting resinl to realize the shielding action of signal with substrate again, because the end face width of housing is not enough, it is big to put the glue operation easier in the above, therefore need to increase the width of housing end face, but increase the space that housing end face width will take lid, and the housing that increases causes the weight of product and cost to improve; Because some glue need need great amount of manpower and material resources and time, the cost height through a series of technical processs such as a glue, baking, prunings; Because the height of conducting resinl is different with hardness, easily with the plate bursting, or pcb board will conduct electricity glue laminated and get gross distortion even come off, and influence shield effectiveness during the assembling pcb board.
The utility model content
The utility model provides a kind of cavity body filter and radio-frequency devices for solution prior art mid point glue cost height, easily with defectives such as pcb board burstings.
For realizing above-mentioned utility model purpose, the utility model by the following technical solutions:
A kind of cavity body filter, comprise cavity, cover plate, the connector outer conductor that is connected with described cover plate and be located at the interior connector inner wire of described cavity, described connector inner wire passes described connector outer conductor and is connected with the external circuit board, also comprise the shielding part for spill between the described connector outer conductor of shielding and the circuit board, the all or part of cavity that is positioned at described shielding part of described connector outer conductor forms the gap between described connector outer conductor and described the external circuit board.
Described shielding part is the substrate that is provided with receiver hole, and described receiver hole runs through described substrate, described connector outer conductor all or part of be contained in the described receiver hole and and the sidewall of described receiver hole between matched in clearance.
Described shielding part is for fixedlying connected with described the external circuit board and having a cylinder of hollow hole, described hollow hole axis is vertical with described the external circuit board, described connector outer conductor all or part of be contained in the hollow hole of described cylinder and and the sidewall of described hollow hole between matched in clearance.
Described shielding part is the annular shell fragment that comprises connecting portion and elastic portion, described annular shell fragment is fixedlyed connected with described the external circuit board by described connecting portion, the all or part of of described connector outer conductor is contained in the described annular shell fragment, and described elastic portion contacts with described connector outer conductor and conducts with described connector outer conductor.
Described connector outer conductor comprises the boss that is connected with described cover plate one and the extension that is connected with described boss one, described extension is contained in the receiver hole of described substrate, in the hollow hole of described cylinder or in the described annular shell fragment, and the sidewall spacers of the sidewall of described extension and described receiver hole or the hollow hole of cylinder cooperates, or described extension contacts and conducts with the elastic portion of described annular shell fragment.
The external diameter of described boss is greater than the external diameter of described extension.
Matched in clearance between the end face of the end face of described boss and described substrate or described cylinder.
Form the gap between the end face of described extension and described the external circuit board.
Described connector inner wire is fixed on described the external circuit board by screw.
A kind of radio-frequency devices comprises aforementioned described cavity body filter, and described radio-frequency devices mainly contains: duplexer, mixer and tower amplifier.
A kind of cavity body filter of the utility model, with respect to prior art, be provided with the shielding part for spill between shielded connector outer conductor and the circuit board, shielding part is the substrate that is provided with receiver hole, the annular shell fragment that is fixed on the circuit board and has the cylinder of hollow hole or be fixed on the circuit board and electrically contact with the connector outer conductor, the connector outer conductor is contained in the cavity of shielding part, by and the sidewall of the sidewall of substrate receiver hole or cylinder hollow hole between matched in clearance, or electrically contact the formation enclosure space with annular shell fragment, the effective signal that overflows between shielded connector outer conductor and the circuit board, can avoid again having saved a large amount of manpowers at housing end face point glue, material cost and time; And form the space between connector outer conductor and the circuit board, and therefore, can avoid the bursting circuit board, shield effectiveness is good.
Description of drawings
In order to be illustrated more clearly in the technical scheme among the utility model embodiment, the accompanying drawing of required use is done to introduce simply in will describing embodiment below.
Fig. 1 is a kind of cavity body filter structural representation of prior art;
Fig. 2 is a kind of cavity body filter stereogram of prior art;
Fig. 3 is first kind of execution mode structural representation of one one kinds of cavity body filters of the utility model embodiment;
Fig. 4 is first kind of execution mode stereogram of one one kinds of cavity body filters of the utility model embodiment;
Fig. 5 is second kind of execution mode structural representation of one one kinds of cavity body filters of the utility model embodiment;
Fig. 6 is second kind of execution mode stereogram of one one kinds of cavity body filters of the utility model embodiment;
Fig. 7 is the third execution mode structural representations of one one kinds of cavity body filters of the utility model embodiment;
Fig. 8 is the third execution mode stereograms of one one kinds of cavity body filters of the utility model embodiment.
Embodiment
Below in conjunction with the accompanying drawing among the utility model embodiment, the technical scheme among the utility model embodiment is clearly and completely described, obviously, described embodiment only is the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment that obtains under the creative work prerequisite, all belong to the scope of the utility model protection.
Embodiment one
A kind of cavity body filter is provided, extremely shown in Figure 8 as Fig. 3, comprise cover plate 202, the connector outer conductor 203 that is connected with described cover plate 202 of cavity 201, the described cavity of capping and be located at the interior connector inner wire 204 of described cavity, preferably, described cover plate 202 is for being located at the cover plate that is the flange plate-like of described connector outer conductor 203, described connector outer conductor 203 middle parts have through hole, and the middle part through hole that described connector inner wire 204 passes described connector outer conductor 203 is connected with the external circuit board 205; Because in the present embodiment, there is signal to overflow between described connector outer conductor 203 and described the external circuit board 205, the signal index of base station system will be influenced greatly, therefore, in described cavity body filter, be provided with the shielding part 206 for spill between the described connector outer conductor 203 of shielding and described the external circuit board 205, the all or part of cavity that is positioned at described shielding part 206 of described connector outer conductor 203 forms the gap between described connector outer conductor 203 and described the external circuit board 206.
First kind of execution mode, as shown in Figure 3 and Figure 4, described shielding part 206 is for being provided with the substrate of receiver hole, described receiver hole runs through described substrate, described connector outer conductor all or part of be contained in the described receiver hole and and the sidewall of described receiver hole between matched in clearance, preferably, cooperate for minimum clearance between the sidewall of all or part of and described receiver hole of described connector outer conductor, be that the receiver hole internal diameter is the minimum limit of size and the external diameter of connector outer conductor is maximum limit of size, sidewall and all or part of of described connector outer conductor of assembling back receiver hole are the tightest mated condition, therefore, just can effectively play the effect of shielded signal.
Second kind of execution mode, as shown in Figure 5 and Figure 6, described shielding part 206 is for fixedlying connected with described the external circuit board 205 and having a cylinder of hollow hole, preferably, described hollow cylinder is thin cylinder, has both reduced material cost, can alleviate the overall weight of product again; Described hollow hole axis is vertical with described the external circuit board, be that described hollow cylinder is from described the external circuit board 205 and described connector outer conductor opposing end faces vertical projections, in the present embodiment, described hollow cylinder is by being fixedly welded on described the external circuit board 205, described connector outer conductor all or part of be contained in the hollow hole of described cylinder and and the sidewall of described hollow hole between matched in clearance, preferably, described matched in clearance is that minimum clearance cooperates, can consult foregoing minimum clearance and cooperate, repeat no more herein.
The third execution mode, as shown in Figure 7 and Figure 8, described shielding part 206 is the annular shell fragment that comprises connecting portion 2061 and elastic portion 2062, preferably, described connecting portion 2061 is connected with described elastic portion 2062 one, described annular shell fragment is fixedlyed connected with described the external circuit board 205 by described connecting portion 2061, preferably, described connecting portion is that hollow and thin-walled is cylindric, it is by being fixedly welded on described the external circuit board, the all or part of of described connector outer conductor is contained in the described annular shell fragment, and described elastic portion 2062 contacts with described connector outer conductor and conducts with the described device outer conductor that connects, preferably, described elastic portion 2062 is curved, when described connector outer conductor passes described elastic portion 2062, the described elastic portion 2062 of meeting distending, described elastic portion 2062 is given coupling mechanism force of described connector outer conductor conversely, then the peak dot of the arc of described elastic portion 2062 contacts with described connector outer conductor, thereby be formed for the enclosure space of shielded signal, can reach the shielding fully of signal.Even the described annular shell fragment in use elasticity of elastic portion 2062 can descend to some extent, but the elastic portion 2062 of described annular shell fragment can form matched in clearance with institute's connector outer conductor, the same effect that can reach shielding.
Because described annular shell fragment conducts by elastic portion and described connector outer conductor, therefore, for the cavity body filter that ground connection is had strict demand, need not again described elasticity ring plate to be established ground structure separately, just can realize the ground connection of annular shell fragment.
According to a kind of cavity body filter of present embodiment, preferably, described connector outer conductor 203 comprises the boss 2031 that is connected with described cover plate 202 one and the extension 2032 that is connected with described boss 2031 one, described extension 2032 is contained in the receiver hole of described substrate, in the hollow hole of described cylinder or in the described annular shell fragment, and the sidewall spacers of the sidewall of described extension 2032 and described receiver hole or the hollow hole of cylinder cooperates, or described extension 2032 contacts and conducts with the elastic portion of described annular shell fragment.Namely, when described shielding part 206 is the described substrate that has a receiver hole of first kind of execution mode, the extension 2032 of described connector outer conductor is contained in the receiver hole of described substrate and with the sidewall spacers of described receiver hole and cooperates, preferably, described matched in clearance is that minimum clearance cooperates, can consult foregoing minimum clearance and cooperate, repeat no more herein; When described shielding part 206 is the described cylinder that has a hollow hole of second kind of execution mode, the extension 2032 of described connector outer conductor is contained in the hollow hole of described cylinder and with the sidewall spacers of described hollow hole and cooperates, preferably, described matched in clearance is that minimum clearance cooperates, can consult foregoing minimum clearance and cooperate, repeat no more herein; When described shielding part 206 is the described annular shell fragment of the third execution mode, the extension 2032 of described connector outer conductor is contained in the described annular shell fragment and contacts and conduct with the peak dot of the arc of the elastic portion 2062 of described annular shell fragment, thereby be formed for the enclosure space of shielded signal, can reach the shielding fully of signal, even the described annular shell fragment in use elasticity of elastic portion 2062 can descend to some extent, but elastic portion 2062 and institute's connector outer conductor of described annular shell fragment can form matched in clearance, the same effect that can reach shielding.
Preferably, the external diameter of described boss 2031 certainly, in other embodiments, also can be set to the uniform hollow circular cylinder in aperture by the connector outer conductor greater than the external diameter of described extension 2032.
Preferably, matched in clearance between the end face of the end face of described boss 2031 and described substrate or described cylinder.Namely, when described shielding part 206 is the described substrate that has a receiver hole of first kind of execution mode, matched in clearance between the end face of described boss 2031 and the described substrate, preferably, described matched in clearance is that minimum clearance cooperates, and can consult foregoing minimum clearance and cooperate, and repeats no more herein, matched in clearance between the end face of described boss 2031 and the described substrate will further weaken signal; When described shielding part 206 is the described cylinder that has a hollow hole of second kind of execution mode, matched in clearance between the end face of described boss 2031 and the end face of described cylinder, preferably, described matched in clearance is that minimum clearance cooperates, can consult foregoing minimum clearance cooperates, repeat no more, matched in clearance between the end face of described boss 2031 and the end face of described cylinder will further weaken signal herein.
At described connector outer conductor boss is set again, can further weakens signal, when being set to the uniform hollow circular cylinder in aperture for the connector outer conductor certainly, just reduced this one deck shielding of raised head face and described substrate or cylinder end face matched in clearance.
Form the gap between the end face of described extension 2032 and described the external circuit board 205, preferably, matched in clearance between the end face of described extension 2032 and described the external circuit board 205 opposing end faces and described the external circuit board 205, then will significantly reduce from the signal that overflows between described extension 2032 and described the external circuit board 205, can reach better shield effectiveness, if minimum clearance cooperates, shield effectiveness is better.
According to a kind of cavity body filter of present embodiment, preferred, described connector inner wire 204 is fixed on described the external circuit board 205 by screw.
A kind of cavity body filter of the utility model, with respect to prior art, be provided with the shielding part for spill between shielded connector outer conductor and the circuit board, shielding part is the substrate that is provided with receiver hole, the annular shell fragment that is fixed on the circuit board and has the cylinder of hollow hole or be fixed on the circuit board and electrically contact with the connector outer conductor, the connector outer conductor is contained in the cavity of shielding part, by and the sidewall of the sidewall of substrate receiver hole or cylinder hollow hole between matched in clearance, or electrically contact the formation enclosure space with annular shell fragment, the effective signal that overflows between shielded connector outer conductor and the circuit board, can avoid again having saved a large amount of manpowers at housing end face point glue, material cost and time; And form the space between connector outer conductor and the circuit board, and therefore, can avoid the bursting circuit board, shield effectiveness is good.
Embodiment two
A kind of radio-frequency devices is provided, comprises aforementioned described cavity body filter, described radio-frequency devices mainly contains: duplexer, mixer and tower amplifier.
Used specific case herein principle of the present utility model and execution mode are set forth, the explanation of above embodiment just is used for helping to understand method of the present utility model and core concept thereof; Simultaneously, for those of ordinary skill in the art, according to thought of the present utility model, the part that all can change in specific embodiments and applications, in sum, this description should not be construed as restriction of the present utility model.
Claims (10)
1. cavity body filter, comprise cavity, cover plate, the connector outer conductor that is connected with described cover plate and be located at the interior connector inner wire of described cavity, described connector inner wire passes described connector outer conductor and is connected with the external circuit board, it is characterized in that: also comprise the shielding part for spill between the described connector outer conductor of shielding and the circuit board, the all or part of cavity that is positioned at described shielding part of described connector outer conductor forms the gap between described connector outer conductor and described the external circuit board.
2. cavity body filter according to claim 1, it is characterized in that: described shielding part is the substrate that is provided with receiver hole, described receiver hole runs through described substrate, described connector outer conductor all or part of be contained in the described receiver hole and and the sidewall of described receiver hole between matched in clearance.
3. cavity body filter according to claim 1, it is characterized in that: described shielding part is for fixedlying connected with described the external circuit board and having a cylinder of hollow hole, described hollow hole axis is vertical with described the external circuit board, described connector outer conductor all or part of be contained in the hollow hole of described cylinder and and the sidewall of described hollow hole between matched in clearance.
4. cavity body filter according to claim 1, it is characterized in that: described shielding part is the annular shell fragment that comprises connecting portion and elastic portion, described annular shell fragment is fixedlyed connected with described the external circuit board by described connecting portion, the all or part of of described connector outer conductor is contained in the described annular shell fragment, and described elastic portion contacts with described connector outer conductor and conducts with described connector outer conductor.
5. according to any described cavity body filter of claim 2 to 4, it is characterized in that: described connector outer conductor comprises the boss that is connected with described cover plate one and the extension that is connected with described boss one, described extension is contained in the receiver hole of described substrate, in the hollow hole of described cylinder or in the described annular shell fragment, and the sidewall spacers of the sidewall of described extension and described receiver hole or the hollow hole of cylinder cooperates, or described extension contacts and conducts with the elastic portion of described annular shell fragment.
6. cavity body filter according to claim 5, it is characterized in that: the external diameter of described boss is greater than the external diameter of described extension.
7. cavity body filter according to claim 6 is characterized in that: matched in clearance between the end face of the end face of described boss and described substrate or described cylinder.
8. cavity body filter according to claim 5 is characterized in that: form the gap between the end face of described extension and described the external circuit board.
9. cavity body filter according to claim 1, it is characterized in that: described connector inner wire is fixed on described the external circuit board by screw.
10. radio-frequency devices, it is characterized in that: comprise any described cavity body filter of claim 1 to 9, described radio-frequency devices mainly contains: duplexer, mixer and tower amplifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220748633 CN203039059U (en) | 2012-12-31 | 2012-12-31 | Cavity filter and radio frequency component |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220748633 CN203039059U (en) | 2012-12-31 | 2012-12-31 | Cavity filter and radio frequency component |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203039059U true CN203039059U (en) | 2013-07-03 |
Family
ID=48691150
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220748633 Expired - Lifetime CN203039059U (en) | 2012-12-31 | 2012-12-31 | Cavity filter and radio frequency component |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203039059U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103066350A (en) * | 2012-12-31 | 2013-04-24 | 深圳市大富科技股份有限公司 | Cavity filter and radio frequency device |
| CN103491656A (en) * | 2013-08-20 | 2014-01-01 | 华为技术有限公司 | Base station and duplexor thereof |
| CN115458885A (en) * | 2022-10-25 | 2022-12-09 | 四川恒湾科技有限公司 | Radio frequency device |
-
2012
- 2012-12-31 CN CN 201220748633 patent/CN203039059U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103066350A (en) * | 2012-12-31 | 2013-04-24 | 深圳市大富科技股份有限公司 | Cavity filter and radio frequency device |
| CN103066350B (en) * | 2012-12-31 | 2018-06-05 | 深圳市大富科技股份有限公司 | A kind of cavity body filter and radio-frequency devices |
| CN103491656A (en) * | 2013-08-20 | 2014-01-01 | 华为技术有限公司 | Base station and duplexor thereof |
| CN103491656B (en) * | 2013-08-20 | 2017-06-06 | 华为技术有限公司 | Base station and its duplexer |
| CN115458885A (en) * | 2022-10-25 | 2022-12-09 | 四川恒湾科技有限公司 | Radio frequency device |
| CN115458885B (en) * | 2022-10-25 | 2023-07-18 | 四川恒湾科技有限公司 | Radio frequency device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130703 |