CN204834811U - Miniaturized cavity filter and communication equipment - Google Patents
Miniaturized cavity filter and communication equipment Download PDFInfo
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- CN204834811U CN204834811U CN201520658360.0U CN201520658360U CN204834811U CN 204834811 U CN204834811 U CN 204834811U CN 201520658360 U CN201520658360 U CN 201520658360U CN 204834811 U CN204834811 U CN 204834811U
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Abstract
The utility model provides a miniaturized cavity filter and communication equipment, this miniaturized cavity filter and communication equipment include cavity, apron, cupped resonance bar and tuning screw rod, and resonance bar sets up on the bottom surface of cavity, and the resonance bar open end is equipped with the second ring bodies, and the apron lower surface is equipped with the first ring bodies that the second ring bodies of visiting the resonance bar open end formed interdigital column structure.
Description
Technical field
The utility model relates to communication technical field, is specifically related to a kind of small cavity filter and communication equipment.
Background technology
Now, along with integrated, the miniaturization trend of mobile communication technology, as the transceiving filter of communication equipment radio-frequency front-end Primary Component, the height of its performance directly determines the quality of whole communication equipment.
According to resonator resonant frequency equation: known, when the operating frequency of cavity body filter reduces, L, C in formula are also larger, now, we adopt the mode increasing filter resonance bar height or increase resonant rod ring flange area to reach lower frequency usually, and this just will cause the size of cavity body filter also increasing.At present, on communications band, particularly on L-band or C-band, the size of cavity body filter has seriously hindered the miniaturization of communications component; Now, the important problem that the size how reducing cavity body filter has become us to face.
Utility model content
In order to solve operating frequency in prior art, more cavity body filter size is larger, and the problem that in prior art, difficulty of processing is large, the utility model provides a kind of resonant rod of cup-shaped, and coordinates the small cavity filter and the communication equipment that are on the cover board provided with ring bodies structure.
For reaching above-mentioned requirements, the technical scheme that the utility model is taked is: provide a kind of small cavity filter and communication equipment, this small cavity filter and communication equipment comprise cavity, cover plate, the resonant rod of cup-shaped and tuning screw, resonant rod is arranged on the bottom surface of cavity, resonant rod open end is provided with the second ring bodies, and cover plate lower surface is provided with the first ring bodies that the second ring bodies probeing into resonant rod open end forms interdigitating configuration.
The advantage that this small cavity filter and communication equipment have is as follows:
The interdigitating configuration that the ring bodies structure that resonant rod cup-like structure and described cover plate are arranged intersects to form mutually, the right opposite that make use of fully between described resonant rod ring bodies and described cover plate ring bodies sidewall amasss.Do not increase the cavity body filter of ring bodies at ring flange relative in prior art, loading capacitance increment of the present utility model be at least one doubly more than; Relative to the cavity body filter increasing ring bodies in prior art at ring flange, owing to arranging too much ring bodies in prior art in resonant rod or cover plate, to cause chopper to enter too dark, and then limit the height of the ring bodies milled out, the utility model uses cup-shaped resonator to match with one deck ring bodies structure of cover plate, can higher by the ring bodies milling of resonant rod and cover plate, reduce difficulty of processing significantly, improve production efficiency, the resonator open end simultaneously comparatively concentrated at power line employs the Q value that more succinct structure also improves resonator; Therefore, compared with prior art, the utility model reduces the size of cavity body filter, achieves miniaturization, and reduces difficulty of processing significantly, also improves the Q value of resonator simultaneously, reduces the insertion loss of cavity body filter.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide further understanding of the present application, form a application's part, use identical reference number to represent same or analogous part in the drawings, the schematic description and description of the application, for explaining the application, does not form the improper restriction to the application.In the accompanying drawings:
Fig. 1 schematically shows the cutaway view of small cavity filter according to the application's embodiment and communication equipment.
Fig. 2 schematically shows the stereogram according to the small cavity filter of the application's embodiment and the resonant rod of communication equipment.
Fig. 3 schematically shows the upward view according to the small cavity filter of the application's embodiment and the cover plate of communication equipment.
Fig. 4 schematically shows the cutaway view according to the small cavity filter of the application's embodiment and the cover plate of communication equipment.
Wherein: 1, cavity; 2, cover plate; 201, the first ring bodies; 3, resonant rod; 301, the second ring bodies; 4, tuning screw; 5, screw; 6, nut.
Embodiment
For making the object of the application, technical scheme and advantage clearly, below in conjunction with drawings and the specific embodiments, the application is described in further detail.
In the following description, quoting of " embodiment ", " embodiment ", " example ", " example " etc. is shown that the embodiment of so description or example can comprise special characteristic, structure, characteristic, character, element or limit, but not each embodiment or example must comprise special characteristic, structure, characteristic, character, element or limit.In addition, reuse phrase " embodiment according to the application " although be likely refer to identical embodiment, and not necessarily refers to identical embodiment.
For the sake of simplicity, eliminate in below describing and well known to a person skilled in the art some technical characteristic.
According to an embodiment of the application, a kind of small cavity filter is provided, as shown in Figure 1, comprise cavity 1, cover plate 2, the resonant rod 3 of cup-shaped and tuning screw 4, resonant rod 3 is arranged on the bottom surface of cavity 1, resonant rod 3 open end is provided with the second ring bodies 301, and cover plate 2 lower surface is provided with the first ring bodies 201 that the second ring bodies 301 probeing into resonant rod 3 open end forms interdigitating configuration.
According to an embodiment of the application, the internal diameter of resonant rod 3 open end second ring bodies 301 of this small cavity filter is greater than the external diameter of the first ring bodies 201 of cover plate 2 lower surface.
According to an embodiment of the application, this small cavity filter first ring bodies 201 and the second ring bodies 301 are positioned on same axis.
According to an embodiment of the application, this small cavity filter tuning screw 4 is through described cover plate 2 lower surface and extensible to probe into described resonant rod 3 inner, and does not contact with resonant rod 3 inside.
According to an embodiment of the application, the first ring bodies 201 of this small cavity filter cover plate 2 lower surface does not contact with the second ring bodies 301 of resonant rod 3 open end.
According to an embodiment of the application, provide a kind of communication equipment, any above-mentioned small cavity filter, mixer, duplexer and multiplexer.
According to an embodiment of the application, this small cavity filter, as shown in Figure 1, this small cavity filter and communication equipment mainly comprise cavity 1, cover plate 2, resonant rod 3 and tuning screw 4, and resonant rod 3 and cavity 1 are formed in one or are fixed on by screw 5 on the bottom surface of cavity 1; Described tuning screw 4 is arranged in cavity through cover plate 2, and its that end be positioned on cover plate 2 is fixed by nut 6; Described cover plate 2 lower surface is provided with outstanding ring bodies structure, described resonant rod 3 open end is provided with outstanding ring bodies structure, described resonant rod 3 presents cup-shaped, forms interdigitating configuration in the ring bodies structure that the ring bodies structure of described cover plate 2 lower surface probes into described resonant rod 3 open end; Wherein, the ring bodies of resonant rod 3 open end is set to one deck, the ring bodies vibrational power flow of cover plate 2 lower surface is one deck, the ring bodies structure of described cover plate 2 lower surface and the ring bodies structure of described resonant rod 3 open end are positioned on same axis, the ring bodies structure of resonant rod 3 open end described in the ring bodies respective outer side edges of described cover plate 2 lower surface and not contacting; Cavity body filter also comprises tuning screw 4, and described tuning screw 4 is through described cover plate 2 lower surface and extensiblely to probe in described resonant rod 3 and not contact.
According to an embodiment of the application, this small cavity filter, as Figure 1-4, a kind of small cavity filter of the present embodiment and communication equipment mainly comprise cavity 1, cover plate 2, resonant rod 3 and tuning screw 4, and resonant rod 3 and cavity 1 are formed in one or are fixed on by screw 5 on the bottom surface of cavity 1; Described tuning screw 4 is arranged in cavity 1 through cover plate, and its that end be positioned on cover plate 2 is fixed by nut 6; Particularly, resonant rod 3 open end is provided with outstanding ring bodies structure 301, and ring bodies vibrational power flow is one deck, and described resonant rod 3 presents cup-shaped; Described cover plate 2 lower surface is provided with outstanding ring bodies structure 201, and ring bodies vibrational power flow is one deck; The ring bodies structure 201 of described cover plate 2 lower surface is positioned on same axis with the ring bodies structure 301 of described resonant rod 3 open end, and the ring bodies structure 201 of described cover plate 2 lower surface coordinates the ring bodies structure 301 of described resonant rod 3 open end and do not contact.
The program takes full advantage of the interdigitating configuration that ring bodies structure 201 that the cup-like structure of described resonant rod 3 and described cover plate 2 are arranged is formed, the right opposite that make use of fully between described resonant rod 3 ring bodies structure 301 and described cover plate 2 ring bodies structure 201 sidewall amasss, significantly improve loading capacitance increment, and the cup-like structure of resonant rod 3 reduces difficulty of processing significantly; In sum, the interdigitating configuration that the ring bodies structure that resonant rod cup-like structure described in the utility model and described cover plate are arranged is formed, significantly improve loading capacitance increment, and reduce difficulty of processing significantly, improve production efficiency, also improve the Q value of resonator simultaneously, reduce the insertion loss of cavity body filter.
The above embodiment only represents several execution mode of the present utility model, and it describes comparatively concrete and detailed, but can not be interpreted as the restriction to the utility model scope.It should be pointed out that for the person of ordinary skill of the art, without departing from the concept of the premise utility, can also make some distortion and improvement, these all belong to the utility model protection range.Therefore protection range of the present utility model should be as the criterion with described claim.
Claims (6)
1. a small cavity filter, it is characterized in that: comprise cavity (1), cover plate (2), the resonant rod (3) of cup-shaped and tuning screw (4), described resonant rod (3) is arranged on the bottom surface of cavity (1), described resonant rod (3) open end is provided with the second ring bodies (301), and described cover plate (2) lower surface is provided with the first ring bodies (201) that the second ring bodies (301) probeing into described resonant rod (3) open end forms interdigitating configuration.
2. small cavity filter according to claim 1, is characterized in that: the internal diameter of described resonant rod (3) open end second ring bodies (301) is greater than the external diameter of first ring bodies (201) of described cover plate (2) lower surface.
3. small cavity filter according to claim 1, is characterized in that: described first ring bodies (201) and described second ring bodies (301) are positioned on same axis.
4. small cavity filter according to claim 1, is characterized in that: described tuning screw (4) is through described cover plate (2) lower surface and the extensible described resonant rod (3) that probes into is inner, and does not contact with described resonant rod (3) inside.
5. small cavity filter according to claim 1, is characterized in that: first ring bodies (201) of described cover plate (2) lower surface does not contact with second ring bodies (301) of described resonant rod (3) open end.
6. a communication equipment, is characterized in that: comprise the small cavity filter described in any one of claim 1 to 5, mixer, duplexer and multiplexer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520658360.0U CN204834811U (en) | 2015-08-28 | 2015-08-28 | Miniaturized cavity filter and communication equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520658360.0U CN204834811U (en) | 2015-08-28 | 2015-08-28 | Miniaturized cavity filter and communication equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204834811U true CN204834811U (en) | 2015-12-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520658360.0U Active CN204834811U (en) | 2015-08-28 | 2015-08-28 | Miniaturized cavity filter and communication equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204834811U (en) |
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2015
- 2015-08-28 CN CN201520658360.0U patent/CN204834811U/en active Active
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