CN201655937U - Cavity filter, filter cavity and signal transmission cable - Google Patents
Cavity filter, filter cavity and signal transmission cable Download PDFInfo
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- CN201655937U CN201655937U CN2010201603944U CN201020160394U CN201655937U CN 201655937 U CN201655937 U CN 201655937U CN 2010201603944 U CN2010201603944 U CN 2010201603944U CN 201020160394 U CN201020160394 U CN 201020160394U CN 201655937 U CN201655937 U CN 201655937U
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Abstract
The utility model discloses a cavity filter, a filter cavity and a signal transmission cable. In the embodiment of the utility model, the signal transmission cable passes through a through hole on a fixed head and is fixed on the fixed head, and then the fixed head is fixed in the fixed groove so as to fix the signal transmission cable. Compared with the prior art of directly clamping the cable in a notch on the cavity, the utility model avoids influence on variation of a filter radio frequency index caused by easy looseness of the cable and can make fixing of the cable more reliable.
Description
Technical field
The utility model relates to the cavity body filter technical field, is specifically related to cavity body filter and filter cavity and signal and transmits cable.
Background technology
Cavity body 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 to select signal of communication, clutter or interference signal that the filtering communication signal frequency is outer.
Cavity body filter generally comprises three classes, and the first kind is a coaxial cavity filter, and second class is a dielectric filter, and the 3rd class is a waveguide filter, can signalization input and output (I/O) interface on the cavity body filter.The input/output interface of signal can be the input/output interface of whole cavity body filter, also can be the input/output interface in a single chamber.
For the mode of transmitting signal by cable, common existing way is to open a small gap on cavity or resonant cavity sidewall, cable is stuck in this small gap, consult as Fig. 1, it is the structural representation that transmits signal in the cavity body filter by cable, breach 120 places of cable 110 among the figure by being connected to the resonant cavity sidewall carry out inputing or outputing of signal.
In research and practice process to prior art, inventor of the present utility model finds, cable fixed form of the prior art, and cable is easily loosening, thereby influences the radio-frequency (RF) index of filter.Simultaneously, airtight tight slit between cable and the cavity small gap causes the leakage signal of resonance space easily, also exists water or moisture to enter the risk of resonant cavity.
The utility model content
The utility model embodiment provides the cable of cavity body filter and filter cavity and the fixing head of band, can be so that the cable in the cavity body filter is fixing more reliable.
A kind of cavity body filter that the utility model embodiment provides, comprise: cavity and signal transmit cable, described signal transfer line cable wrap is drawn together: cable and fixing head, described cavity is provided with holddown groove, on the described fixing head through hole is arranged, described cable passes described through hole and is fixed on the fixing head, and described fixing head is fixed in the described holddown groove, and cable is fixed.
Preferably, described fixing cylindrical, described fixing head embeds described holddown groove by interference fit.
Preferably, described fixing head comprises that first side and second side, described through hole run through described first side and described second side, and described cable penetrates from the through hole of described first side, pass from described second side, and the outside barrier of described cable is welded with fixing head.
Preferably, described second side is provided with the welding depressed part, and is described and the outside barrier of described cable and fixing head are welded in the depressed part of described second side.
Preferably, after described fixing head was fixed on holddown groove, fixing head closely contacted with the cavity wall of holddown groove both sides, and fixedly head closely contacts with cover plate.
A kind of signal that the utility model embodiment provides transmits cable, be used for cavity body filter, comprise cable and fixing head, described fixing head comprises first side and second side and runs through first side and the through hole of second side, described cable penetrates from the through hole of described first side, pass from described second side, and the outside barrier of described cable is welded with fixing head.
Preferably, described second side is provided with the welding depressed part, and is described and the outside barrier of described cable and fixing head are welded in the depressed part of described second side.
A kind of filter cavity that the utility model embodiment provides, cavity are provided with the holddown groove that is used to accommodate fixing head.
Among the utility model embodiment, signal is transmitted cable pass the through hole on the fixing head and be fixed on the fixing head, will fix head again and be fixed in the described holddown groove, signal is transmitted cable fix.In the breach that directly cable is stuck in the prior art on the cavity, the influence of having avoided the easily loosening filter radio-frequency (RF) index that causes of cable to change can be so that fixing of cable be more reliable.
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, apparently, accompanying drawing in describing below only is embodiment more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is that signal transmits cable technique for fixing structural representation in the prior art;
Fig. 2 is the structural representation of the utility model embodiment one cavity body filter;
Fig. 3 (a) is the structural representation of the cable of the fixing head of the utility model embodiment two bands;
Fig. 3 (b) is the structural representation of the fixing head of the fixing cable of the utility model embodiment two bands;
Fig. 4 is the structural representation of the utility model embodiment three filter cavities.
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 is obtained under the creative work prerequisite, all belong to the scope of the utility model protection.
Embodiment one, a kind of cavity body filter, structural representation as shown in Figure 2, comprise: cavity 210, signal transmit cable 220, described signal transmits cable 220 and comprises: cable 221 and fixing 222, described cavity 210 is provided with holddown groove 211, on the described fixing head through hole 223 is arranged, and described cable passes described through hole 223 and is fixed on fixing 222, described fixing 222 is housed in the described holddown groove 211, signal is transmitted cable fix.
Among the utility model embodiment one, signal is transmitted cable pass the through hole on the fixing head and be fixed on the fixing head, will fix head again and be housed in the described holddown groove, signal is transmitted cable fix.In the breach that directly cable is stuck in the prior art on the cavity, the influence of having avoided the easily loosening filter radio-frequency (RF) index that causes of cable to change can be so that fixing of cable be more reliable.Be appreciated that, the cavity body filter that the utility model provides can also comprise the existing conventional parts, as cover plate, resonatron, coupling window etc., present embodiment only is described the part-structure that relates to the present utility model point, and concrete conventional structure does not constitute restriction of the present utility model.
Among the utility model embodiment, described fixing head can be multiple shape, as cylindrical, rectangle, elliptical cylinder-shape or plate etc., described fixing head can have multiple with the fixed form of holddown groove, preferably, can adopt interference fit will fix head and embed described holddown groove, can certainly take modes such as threaded engagement or clamping to realize fixing, concrete fixed form does not constitute restriction of the present utility model.
In order to prevent the water proof and dust proof performance of electromagnetic exposure or raising filter, after described fixing head is fixed on holddown groove, can being dimensioned to after fixing head is fixed to holddown groove of head will be fixed, closely contact with the cavity wall of holddown groove both sides, the height of fixing head can be designed to simultaneously, after fixing head was accommodated holddown groove, the top of fixing head was highly identical with the assembling of cover plate or low slightly (for example: highly hang down 0.03mm～0.07mm) than the assembling of cover plate.
The utility model also provides a kind of cable with fixing head, is used for the cavity body filter of the foregoing description one, the description of concrete structure reference example two.
Embodiment two, a kind of signal transmit cable, structural representation is shown in Fig. 3 (a), Fig. 3 (a) transmits the structural representation of cable for signal, comprise: cable 310 and fixing 320, consult Fig. 3 (b) in the lump, described fixing 320 comprises first side 321 and second side 322 and the through hole 323 that runs through first side 321 and second side 322, described cable penetrates from the through hole of described first side 321, pass from described second side 322, and the outside barrier of described cable and fixing head welded 322, the fixing and separator of realizing cable is by cavity ground connection.
In the present embodiment, described second side is provided with welding depressed part 324, a depressed part 324 described and that the outside barrier of described cable and fixing head are welded.Be appreciated that the fixed form between described cable and the fixing head can also take other modes, fixing etc. as adopting conducting resinl, concrete fixed form does not constitute restriction of the present utility model.
The utility model also provides a kind of filter cavity, and concrete structure is referring to shown in the embodiment three.
Embodiment three, a kind of filter cavity, structural representation as shown in Figure 4, cavity 410 is provided with the holddown groove 411 of the fixing head that is used to accommodate.Be appreciated that, the filter cavity that the utility model provides can also comprise the existing conventional parts, as resonatron, coupling window etc., present embodiment only is described the part that relates to the present utility model point, and concrete conventional structure does not constitute restriction of the present utility model.
More than cavity body filter that the utility model embodiment is provided and filter cavity and signal transmit cable and be described in detail, 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 one 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 (8)
1. cavity body filter, it is characterized in that, comprise: cavity and signal transmit cable, described signal transfer line cable wrap is drawn together: cable and fixing head, described cavity is provided with holddown groove, on the described fixing head through hole is arranged, and described cable passes described through hole and is fixed on the fixing head, described fixing head is fixed in the described holddown groove, and cable is fixed.
2. cavity body filter as claimed in claim 1 is characterized in that, described fixing cylindrical, described fixing head embeds described holddown groove by interference fit.
3. cavity body filter as claimed in claim 1, it is characterized in that, described fixing head comprises first side and second side, described through hole runs through described first side and described second side, described cable penetrates from the through hole of described first side, pass from described second side, and the outside barrier of described cable is welded with fixing head.
4. cavity body filter as claimed in claim 3 is characterized in that, described second side is provided with the welding depressed part, and is described and the outside barrier of described cable and fixing head are welded in the depressed part of described second side.
5. as any described cavity body filter of claim 1 to 4, it is characterized in that after described fixing head was fixed on holddown groove, fixing head closely contacted with the cavity wall of holddown groove both sides, fixedly head closely contacts with cover plate.
6. a signal transmits cable, be used for cavity body filter, it is characterized in that, comprise cable and fixing head, described fixing head comprises first side and second side and runs through first side and the through hole of second side, described cable penetrates from the through hole of described first side, passes from described second side, and the outside barrier of described cable is welded with fixing head.
7. the cable of the fixing head of band as claimed in claim 6 is characterized in that described second side is provided with the welding depressed part, and is described and the outside barrier of described cable and fixing head are welded in the depressed part of described second side.
8. a filter cavity is characterized in that, cavity is provided with the holddown groove that is used to accommodate fixing head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201603944U CN201655937U (en) | 2010-04-12 | 2010-04-12 | Cavity filter, filter cavity and signal transmission cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201603944U CN201655937U (en) | 2010-04-12 | 2010-04-12 | Cavity filter, filter cavity and signal transmission cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201655937U true CN201655937U (en) | 2010-11-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201603944U Expired - Lifetime CN201655937U (en) | 2010-04-12 | 2010-04-12 | Cavity filter, filter cavity and signal transmission cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201655937U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019213913A1 (en) * | 2018-05-10 | 2019-11-14 | 深圳市大富科技股份有限公司 | Cavity filter, filter cavity, and manufacturing method therefor |
-
2010
- 2010-04-12 CN CN2010201603944U patent/CN201655937U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019213913A1 (en) * | 2018-05-10 | 2019-11-14 | 深圳市大富科技股份有限公司 | Cavity filter, filter cavity, and manufacturing method therefor |
| CN111108644A (en) * | 2018-05-10 | 2020-05-05 | 深圳市大富科技股份有限公司 | Cavity filter, filter cavity and preparation method thereof |
| CN111108644B (en) * | 2018-05-10 | 2022-05-03 | 深圳市大富科技股份有限公司 | Cavity filter, filter cavity and preparation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP02 | Change in the address of a patent holder |
Address after: 518104, Guangdong, Shenzhen province Baoan District manhole Street oyster road manhole Industrial Company Third Industrial Zone A1, A2, A3 101 and 2 layers, A4 Patentee after: Shenzhen Tat Fook Technology Co., Ltd. Address before: 518108 Bao'an District, Shenzhen City, Guangdong Province, Shiyan Town, love group with the rich industrial area A \ B Dong Patentee before: Shenzhen Tat Fook Technology Co., Ltd. |
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| CX01 | Expiry of patent term |
Granted publication date: 20101124 |
|
| CX01 | Expiry of patent term |