CN204793134U - A resonance pole for cavity filter - Google Patents
A resonance pole for cavity filter Download PDFInfo
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- CN204793134U CN204793134U CN201520558495.XU CN201520558495U CN204793134U CN 204793134 U CN204793134 U CN 204793134U CN 201520558495 U CN201520558495 U CN 201520558495U CN 204793134 U CN204793134 U CN 204793134U
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- tuning screw
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Abstract
The utility model provides a less a resonance pole for cavity filter of volume, resonance pole are the tube -shape, and its one end is fixed at the cavity diapire through the welding mode, and the other end is relative with the apron axial, the resonance pole has the through -hole that runs through along the axial, and the through -hole is the echelonment, include the first through -hole that is close to cavity one side, be close to the third through -hole of apron one side and be located first through -hole and the third through -hole between the second through -hole, the internal diameter of first through -hole and the internal diameter of third through -hole all are greater than the internal diameter of second through -hole, the diapire of cavity is equipped with integrated into one piece's installation base with it, is equipped with on the installation base to the tuning screw rod who stretches out in the resonant cavity, and first through -hole cup joints on the installation base, and second through -hole and tuning screw rod threaded connection form the capacitance coupling between the inner wall of third through -hole and tuning screw rod's the outer wall.
Description
Technical field
The utility model relates to communication equipment field, is specifically related to a kind of resonant rod for cavity body filter.
Background technology
Along with the development of wireless communication technology, to the miniaturization of cavity body filter and integrated requirement more and more higher, especially in 5G frequency range, the height achieving the critical components such as antenna filter is integrated, higher requirement is had to filter miniaturization, therefore the key part structure for filter all needs miniaturization, and traditional resonant rod mounting means can not meet miniaturized needs, therefore needs to develop the good new resonant rod of a kind of unfailing performance.
The cylindrical shape that traditional filter resonance bar is generally closed in the one end open other end, installation base is provided with in cavity, the screw of resonant rod through resonant rod blind end end face is fixed on installation base, and cover plate is provided with the tuning screw stretched in resonant rod openend.Because head of screw is large, the tuning space of tuning screw in resonant rod can be occupied, cause the axial length of resonant rod excessive, and then increase the volume of resonant rod.In addition, tuning screw stretches into resonant rod openend from cover plate and regulates, and needs to leave enough axial safe distances, thus further increase the size of resonant rod between cover plate and resonance rod seal end.
Summary of the invention
The purpose of this utility model is the resonant rod for cavity body filter providing a kind of small volume in order to overcome above-mentioned the deficiencies in the prior art.
A kind of resonant rod for cavity body filter that the utility model provides, cavity body filter comprises cavity and cover plate, and cover plate capping cavity forms resonant cavity, and resonant rod is tubular, its one end is fixed on the diapire of cavity by welding manner, and the other end and plate shaft are to relative; Resonant rod has the through hole run through vertically, through hole is stepped, comprise the first through hole near cavity side, near the third through-hole of cover plate side and the second through hole between the first through hole and third through-hole, the internal diameter of the first through hole and the internal diameter of third through-hole are all greater than the internal diameter of the second through hole; The diapire of cavity is provided with integrated installation base with it, installation base is provided with the tuning screw stretched out in resonant cavity, first through hole is socketed on installation base, and the second through hole is threaded with tuning screw, forms capacitive coupling between the inwall of third through-hole and the outer wall of tuning screw.
Preferably, the end face of the first via openings end is provided with mounting groove circumferentially, and mounting groove is closed by the diapire of cavity, and mounting groove is for applying tin cream.
Preferably, the openend of third through-hole is provided with the capacitive load dish extended radially outward, capacitive coupling between capacitive load dish and cover plate.
A kind of resonant rod for cavity body filter that the utility model provides, resonant rod is fixedly connected with cavity by welding manner, such resonant rod does not just need a reserved part to hold the space of mounting screw head, decreases the axial height of resonant rod, thus decreases the volume of resonant rod.In addition, tuning screw stretches into resonant rod from cavity side, and resonant rod is provided with the through hole run through vertically, thus need not reserve one section of safe distance vertically between tuning screw and resonant rod, decrease the axial height of resonant rod, thus further reduce the volume of resonant rod.
Accompanying drawing explanation
In order to the technical scheme in clearer explanation the utility model embodiment, below the accompanying drawing used required in describing embodiment is briefly described, apparent, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the resonant rod profile for cavity body filter.
Below the parts title in above-mentioned accompanying drawing corresponding to Reference numeral: the first through hole 11, second through hole 12, third through-hole 13, mounting groove 20, capacitive load dish 30.
Embodiment
As shown in Figure 1, the present embodiment provides a kind of resonant rod for cavity body filter, and cavity body filter comprises cavity and cover plate, cover plate capping cavity forms resonant cavity, resonant rod is tubular, and its one end is fixed on cavity diapire by welding manner, and the other end and plate shaft are to relative; Resonant rod has the through hole run through vertically, through hole is stepped, comprise the first through hole 11 near cavity side, be all greater than the internal diameter of the second through hole 12 near the third through-hole 13 of cover plate side and the internal diameter of the second through hole 12, first through hole 11 between the first through hole 11 and third through-hole 13 and the internal diameter of third through-hole 13; The diapire of cavity is provided with integrated installation base with it, installation base is provided with the tuning screw stretched out in described resonant cavity, first through hole 11 is socketed on installation base, second through hole 12 is threaded with tuning screw, forms capacitive coupling between the inwall of third through-hole 13 and the outer wall of tuning screw.
The end face of the first through hole 11 openend is provided with mounting groove 20 circumferentially, and mounting groove 20 is closed by the diapire of cavity, and mounting groove 20 is for applying tin cream.When high-temperature heating tin cream, tin cream melts, and makes resonant rod together with cavity welding.
The openend of third through-hole 13 is provided with the capacitive load dish 30 extended radially outward, capacitive coupling between capacitive load dish 30 and cover plate.
A kind of resonant rod for cavity body filter that the present embodiment provides, resonant rod is fixedly connected with cavity by welding manner, such resonant rod does not just need a reserved part to hold the space of mounting screw head, decreases the axial height of resonant rod, thus decreases the volume of resonant rod.In addition, tuning screw stretches into resonant rod from cavity side, and resonant rod is provided with the through hole run through vertically, thus need not reserve one section of safe distance vertically between tuning screw and resonant rod, decrease the axial height of resonant rod, thus further reduce the volume of resonant rod.
Apply specific case herein to set forth principle of the present utility model and execution mode, the explanation of above embodiment just understands method of the present utility model and core concept thereof for helping; Meanwhile, for one of ordinary skill in the art, according to thought of the present utility model, all will change in specific embodiments and applications, in sum, this description should not be construed as restriction of the present utility model.
Claims (3)
1. the resonant rod for cavity body filter, described cavity body filter comprises cavity and cover plate, cavity described in described cover plate capping forms resonant cavity, it is characterized in that, described resonant rod is tubular, its one end is fixed on the diapire of described cavity by welding manner, and the other end and described plate shaft are to relative; Described resonant rod has the through hole run through vertically, described through hole is stepped, the second through hole (12) comprising the first through hole (11) near described cavity side, the third through-hole (13) near described cover plate side and be positioned between described first through hole (11) and third through-hole (13), the internal diameter of described first through hole (11) and the internal diameter of described third through-hole (13) are all greater than the internal diameter of described second through hole (12);
The diapire of described cavity is provided with integrated installation base with it, described installation base is provided with the tuning screw stretched out in described cover plate, described first through hole (11) is socketed on described installation base, described second through hole (12) is threaded with described tuning screw, forms capacitive coupling between the inwall of described third through-hole (13) and the outer wall of described tuning screw.
2. a kind of resonant rod for cavity body filter according to claim 1, it is characterized in that, the end face of described first through hole (11) openend is provided with mounting groove (20) circumferentially, described mounting groove (20) is closed by the diapire of described cavity, and described mounting groove (20) is for applying tin cream.
3. a kind of resonant rod for cavity body filter according to claim 1, it is characterized in that, the openend of described third through-hole (13) is provided with the capacitive load dish (30) extended radially outward, capacitive coupling between described capacitive load dish (30) and described cover plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520558495.XU CN204793134U (en) | 2015-07-30 | 2015-07-30 | A resonance pole for cavity filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520558495.XU CN204793134U (en) | 2015-07-30 | 2015-07-30 | A resonance pole for cavity filter |
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| Publication Number | Publication Date |
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| CN204793134U true CN204793134U (en) | 2015-11-18 |
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| CN201520558495.XU Active CN204793134U (en) | 2015-07-30 | 2015-07-30 | A resonance pole for cavity filter |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106450635A (en) * | 2016-12-08 | 2017-02-22 | 江苏贝孚德通讯科技股份有限公司 | Integrated microwave wave guide coupler |
| CN108132261A (en) * | 2018-02-05 | 2018-06-08 | 中国工程物理研究院激光聚变研究中心 | Flat response filter disc erecting device and flat response X-ray detector |
| WO2020087378A1 (en) * | 2018-10-31 | 2020-05-07 | 华为技术有限公司 | Dielectric filter and communication device |
| CN111697309A (en) * | 2020-07-17 | 2020-09-22 | 成都九洲迪飞科技有限责任公司 | Cavity filter resonant rod assembling method based on limiting tool |
| WO2021027730A1 (en) * | 2019-08-09 | 2021-02-18 | Telefonaktiebolaget Lm Ericsson (Publ) | Antenna filter unit, and radio unit |
| CN113497318A (en) * | 2020-04-08 | 2021-10-12 | 深圳市大富科技股份有限公司 | Band elimination filter and communication equipment |
-
2015
- 2015-07-30 CN CN201520558495.XU patent/CN204793134U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106450635A (en) * | 2016-12-08 | 2017-02-22 | 江苏贝孚德通讯科技股份有限公司 | Integrated microwave wave guide coupler |
| CN108132261A (en) * | 2018-02-05 | 2018-06-08 | 中国工程物理研究院激光聚变研究中心 | Flat response filter disc erecting device and flat response X-ray detector |
| WO2020087378A1 (en) * | 2018-10-31 | 2020-05-07 | 华为技术有限公司 | Dielectric filter and communication device |
| US11509030B2 (en) | 2018-10-31 | 2022-11-22 | Huawei Technologies Co., Ltd. | Dielectric filter and communications device |
| WO2021027730A1 (en) * | 2019-08-09 | 2021-02-18 | Telefonaktiebolaget Lm Ericsson (Publ) | Antenna filter unit, and radio unit |
| CN113497318A (en) * | 2020-04-08 | 2021-10-12 | 深圳市大富科技股份有限公司 | Band elimination filter and communication equipment |
| CN111697309A (en) * | 2020-07-17 | 2020-09-22 | 成都九洲迪飞科技有限责任公司 | Cavity filter resonant rod assembling method based on limiting tool |
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