CN204809369U - Bimodulus dielectric filter with novel adjustable coupling device - Google Patents
Bimodulus dielectric filter with novel adjustable coupling device Download PDFInfo
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- CN204809369U CN204809369U CN201520433366.8U CN201520433366U CN204809369U CN 204809369 U CN204809369 U CN 204809369U CN 201520433366 U CN201520433366 U CN 201520433366U CN 204809369 U CN204809369 U CN 204809369U
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- bimodulus dielectric
- bimodulus
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Abstract
The utility model discloses a bimodulus dielectric filter with novel adjustable coupling device, including the metal cavity, separate the metal cavity on the metal wall that is two single chambeies, set up the coupling window on the metal wall, the apron on the metal cavity is located to the lid, be fixed in two coupling tuning screw rod of apron and locate wire chamber two internal bimodulus dielectric resonator, two gold medals belong to the coupling pole, a metal link, two bimodulus dielectric resonator locate two single intracavitys respectively and are fixed in the bottom plate of metal cavity respectively, two gold medals belong to the bottom plate that the coupling pole lies in two single intracavitys respectively and is fixed in the metal cavity, and be located two coupling tuning screw rod respectively under, the metal link is worn to locate in the coupling window and connects two gold medals to belong to the coupling pole. Make up into the coupling device through metal coupling pole and metal link, make power control screw rod and coupling adjusting screw be in the metal cavity with in the one side, make the product design rule, small, increased the feasibility and the productibility of the product process of debugging.
Description
Technical field
The utility model relates to the passive antenna feeder device in wireless communication, particularly relates to a kind of bimodulus dielectric filter with novel adjustable coupling device.
Background technology
For a long time, filter plays an important role always in the process of electronic signal.It is mainly used in signal and the suppression interference signal of filtering frequency of utilization.Along with the fast development of microwave radio commu, the resource of frequency range in short supply, more and more higher requirement is proposed to the performance of filter and volume, traditional wire chamber filter, single mode dielectric filter can not meet these requirements all, so want by bimodulus dielectric filter to improve the performance of filter and to reduce its volume.Under equal performance, bimodulus dielectric filter compares the filter be made up of singlemode resonance device, and volume, weight, number of resonators all reduce 50%.
The bimodulus dielectric filter of current existing employing ceramic resonator, has following difficulty when realizing:
(1) what existing bimodulus dielectric filter adopted is square resonator, in order to two the orthogonal degenerate modes realized on single bimodulus dielectric resonator have encouraged two orthogonal degenerate modes in another bimodulus dielectric resonator simultaneously, coupling tuning screw and frequency tuning screw and coupling tuning screw must be arranged not at grade in two orthogonal planes, thus make filter row chamber form constrained, can only realize in simple matrix pattern structure, but be arranged on the drift angle of resonator due to some tuning structure, but square or rectangular only has four angles, therefore, when resonator number exceeds four, just must there is a resonator that cannot tuning structure be set.
(2) in above-mentioned traditional coupled modes, due to coupling tuning screw and frequency tuning screw not at grade, thus debugging process operations inconvenience.
(3) in above-mentioned traditional coupled modes, due to coupling tuning screw and frequency tuning screw not at grade, therefore profile is irregular, virtually increases the volume of filter, is difficult to meet actual harsh dimensional requirement.
Therefore, above-mentioned traditional bimodulus dielectric filter (duplexer) cannot commercially be promoted, and being necessary provides a kind of novel bimodulus dielectric filter with novel adjustable coupling device to overcome the problems referred to above.
Utility model content
The purpose of this utility model is to provide a kind of novel bimodulus dielectric filter with novel adjustable coupling device.
To achieve these goals, the utility model provides a kind of bimodulus dielectric filter with novel adjustable coupling device, comprise metallic cavity, metallic cavity is divided into the metallic walls in two single chambeies, be covered on the cover plate in metallic cavity, the two bimodulus dielectric resonators being fixed on two coupling tuning screw rods on cover plate and being located in metallic cavity, two bimodulus dielectric resonators to be located at respectively in two single chambeies and to be individually fixed on the base plate of metallic cavity, wherein, metallic walls offers the coupling window in the single chamber of connection two, and this bimodulus dielectric filter with novel adjustable coupling device also comprises two metal Coupling bars and connects the metal coupling line of two metal Coupling bars, two metal Coupling bars to lay respectively in two single chambeies and are all fixed on the base plate of metallic cavity, two metal Coupling bars lay respectively at immediately below two coupling tuning screw rods, metal coupling line is arranged in coupling window.
Preferably, one end be fixedly connected with the base plate of metallic cavity of metal Coupling bar is short-circuit end, and the other end open circuit of metal Coupling bar, between the short-circuit end that metal coupling line is connected to metal Coupling bar and open end.
Preferably, coupling window is the through hole be opened in metallic walls.
Preferably, between metal coupling line and the inwall of coupling window, there is certain interval, and the two ends of metal coupling line are welded with two metal Coupling bars respectively.
Preferably, coupling window is square or circle.
Preferably, coupling tuning screw rod is fixed on cover plate by nut or self-locking device.
Preferably, bimodulus dielectric resonator comprises resonator and and supports the supporter of resonator.
Preferably, the bimodulus dielectric filter with novel adjustable coupling device also comprises two dielectric tuning dishes, two dielectric tuning dishes are fixed on cover plate respectively by dielectric disc tuning screw and lay respectively at the top of two bimodulus dielectric resonators, and two dielectric tuning dishes are all positioned at metallic cavity.
Compared with prior art, the bimodulus dielectric filter with novel adjustable coupling device of the present utility model, coupling device is combined into by metal Coupling bar and metal coupling line, two orthogonal degenerate modes that can realize on single bimodulus dielectric resonator are coupled on another resonator by this coupling device simultaneously, have encouraged two orthogonal degenerate modes in another bimodulus dielectric resonator.And, the coupling of two kinds of degenerate modes can be regulated strong and weak by two coupling tuning screw rods on cover plate simultaneously.Adopt the coupling device in the utility model, frequency adjustment screw rod and coupling adjusting screw(rod) can be made to be on the same face of metallic cavity, make filter row chamber unrestricted, and number of resonators is not also by the restriction of four, make product design rule simultaneously, add feasibility and the productibility of production debugging process, and reduce filter volume with satisfied actual harsh dimensional requirement.
By following description also by reference to the accompanying drawings, the utility model will become more clear, and these accompanying drawings are for explaining embodiment of the present utility model.
Accompanying drawing explanation
Fig. 1 is the three-dimensional exploded view that the utility model has the bimodulus dielectric filter of novel adjustable coupling device.
Fig. 2 is the cutaway view that the utility model has the bimodulus dielectric filter of novel adjustable coupling device.
Embodiment
With reference now to accompanying drawing, describe embodiment of the present utility model, element numbers similar in accompanying drawing represents similar element.
As shown in Figure 1, the present embodiment has the bimodulus dielectric filter 100 of novel adjustable coupling device, comprises metallic cavity 101, metallic cavity 101 is divided into metallic walls 104, the cover plate 106 be covered in metallic cavity 101 in two single chambeies 102,103.Wherein, metallic walls 104 offers be square, the coupling window 105 of circular or other arbitrary shapes, coupling window 105 is communicated with two single chambeies 102,103.Cover plate 106 is fixed on the top of metallic cavity 101 with sealing metal cavity 101 by some assembling screws 107, cover plate 106 offers two tapped through holes, for installing coupling tuning screw rod 111 (referring to aftermentioned).
Particularly, coupling window 105 is for being opened in the through hole in metallic walls (104), and coupling window 105 all has certain distance (referring to Fig. 2) apart from the top of metallic walls (104) and bottom.
Shown in Fig. 1-2, this bimodulus dielectric filter 100 with novel adjustable coupling device also comprises two bimodulus dielectric resonator 108, two metal Coupling bar 109, metal coupling line 110 and two coupling tuning screw rods 111.Wherein, two single chambeies 102 are located at respectively by two bimodulus dielectric resonators 108, be individually fixed on the base plate of metallic cavity 101 in 103, two metal Coupling bars 109 lay respectively at two single chambeies 102, all be fixed on the base plate of metallic cavity 101 in 103, metal coupling line 110 is arranged in coupling window 105 and two ends and welds with two metal Coupling bars 109 respectively, between the inwall of metal coupling line 110 and coupling window 105, there is certain interval, namely, metal coupling line 110 not with the contact internal walls of coupling window 105, two coupling tuning screw rods 111 are individually fixed on cover plate 106, and two coupling tuning screw rods 111 are positioned at directly over two metal Coupling bars 109.
Particularly, bimodulus dielectric resonator 108 comprises resonator and the supporter for supporting resonator, and bimodulus dielectric resonator 108 is fixed on the base plate of metallic cavity 101 by screw.
The connected mode of two metal Coupling bars 109 is identical, for a wherein metal Coupling bar 109, one end be fixedly connected with the base plate of metallic cavity 101 of this metal Coupling bar 109 is short-circuit end, the other end open circuit of this metal Coupling bar 109, metal coupling line 110 is welded in the correct position between the short-circuit end of metal Coupling bar 109 and open end.Certainly, be not limited to weld between metal coupling line 110 with metal Coupling bar 109, also can realize by other means connecting, can realize as long as enough contacting between the two closely and being convenient to transmission current.
Wherein, the electroplate of metal coupling line 110 or copper facing, but not as restriction, it also can be other electric conductor comprising sheet metal.
In addition, combine closely and formed and good conduct performance between the base plate of metal Coupling bar 109 and metallic cavity 101, connected mode between the two can be soldering, press, laser welding, being threaded etc. all can by the base plate close-connected mode of metal Coupling bar 109 with metallic cavity 101.In a kind of optimal way of the present utility model, screwed hole is offered in the lower end of metal Coupling bar 109, is fixedly connected with by the base plate of screw with metallic cavity 101.
Again referring to shown in Fig. 1-2, coupling tuning screw rod 111 can be full thread common screw, also can be upper end is threaded portion, lower end is the polished rod that diameter is larger than threaded portion.And coupling tuning screw rod 111 can be silver-plated or copper-plated Metallic rod, the medium screw rod that also can sinter with microwave ceramics.Coupling tuning screw rod 111 can be connected with cover plate 106 by nut, self-locking device or other modes, in the present embodiment, be fixed on cover plate 106 by nut 112 in the tapped through hole that coupling tuning screw rod 111 is arranged on cover plate 106, regulated the coupling power of two kinds of degenerate modes by two coupling tuning screw rods 111 on cover plate 106 simultaneously.
In addition, the bimodulus dielectric filter 100 with novel adjustable coupling device also comprises two dielectric tuning dishes 113, each dielectric tuning dish 113 is fixed on cover plate 106 by dielectric disc tuning screw 114, nut 115, and two dielectric tuning dishes 113 are all positioned at metallic cavity 101 and lay respectively at directly over two bimodulus dielectric resonators 108.
As from the foregoing, bimodulus dielectric filter 100 of the present utility model, coupling device is combined into by two metal Coupling bars 109, the metal coupling line 110 be connected between two metal Coupling bars 109, two orthogonal degenerate modes that can realize on single bimodulus dielectric resonator 108 are coupled on another bimodulus dielectric resonator 108 by this coupling device simultaneously, have encouraged two orthogonal degenerate modes in another bimodulus dielectric resonator 108.And, the coupling of two kinds of degenerate modes can be regulated strong and weak by two coupling tuning screw rods 111 on cover plate 106 simultaneously.Adopt the coupling device 100 in the utility model, frequency adjustment screw rod can be made (namely, dielectric tuning dish 113 and dielectric disc tuning screw 114) and coupling adjusting screw(rod) 111 be on the same face of metallic cavity 101, make filter row chamber unrestricted, and number of resonators is not also by the restriction of four, make product design rule simultaneously, add feasibility and the productibility of production debugging process, and reduce filter volume with satisfied actual harsh dimensional requirement.
Understandably, said structure only embodies the most basic structure of the technical solution of the utility model, and cascade or the series connection of any said structure all belong to protection range of the present utility model.
More than in conjunction with most preferred embodiment, the utility model is described, but the utility model is not limited to the embodiment of above announcement, and should contain various carry out according to essence of the present utility model amendment, equivalent combinations.
Claims (8)
1. one kind has the bimodulus dielectric filter of novel adjustable coupling device, comprise metallic cavity (101), metallic cavity (101) is divided into two single chambeies (102, 103) metallic walls (104), be covered on the cover plate (106) in metallic cavity (101), the two bimodulus dielectric resonators (108) being fixed on two coupling tuning screw rods (111) on cover plate (106) and being located in metallic cavity 101, two single chambeies (102 are located at respectively by two bimodulus dielectric resonators (108), 103) in and be individually fixed on the base plate of metallic cavity (101), it is characterized in that, metallic walls (104) offers the single chamber (102 of connection two, 103) coupling window (105), and this bimodulus dielectric filter with novel adjustable coupling device also comprises two metal Coupling bars (109) and connects the metal coupling line (110) of two metal Coupling bars (109), two metal Coupling bars (109) lay respectively at two single chambeies (102, 103) in and be all fixed on the base plate of metallic cavity (101), two metal Coupling bars (109) lay respectively at immediately below two coupling tuning screw rods (111), metal coupling line (110) is arranged in coupling window (105).
2. there is the bimodulus dielectric filter of novel adjustable coupling device as claimed in claim 1, it is characterized in that, one end be fixedly connected with the base plate of metallic cavity (101) of metal Coupling bar (109) is short-circuit end, the other end open circuit of metal Coupling bar (109), between the short-circuit end that metal coupling line (110) is connected to metal Coupling bar (109) and open end.
3. have the bimodulus dielectric filter of novel adjustable coupling device as claimed in claim 1, it is characterized in that, coupling window (105) is for being opened in the through hole in metallic walls (104).
4. there is the bimodulus dielectric filter of novel adjustable coupling device as claimed in claim 1, it is characterized in that, between the inwall of metal coupling line (110) and coupling window (105), there is certain interval, and the two ends of metal coupling line (110) are welded with two metal Coupling bars (109) respectively.
5. have the bimodulus dielectric filter of novel adjustable coupling device as claimed in claim 1, it is characterized in that, coupling window (105) is square or circle.
6. have the bimodulus dielectric filter of novel adjustable coupling device as claimed in claim 1, it is characterized in that, coupling tuning screw rod (111) is fixed on cover plate (106) by nut or self-locking device.
7. have the bimodulus dielectric filter of novel adjustable coupling device as claimed in claim 1, it is characterized in that, bimodulus dielectric resonator (108) comprises resonator and and supports the supporter of resonator.
8. there is the bimodulus dielectric filter of novel adjustable coupling device as claimed in claim 1, it is characterized in that, also comprise two dielectric tuning dishes (113), two dielectric tuning dishes (113) are fixed on cover plate (106) respectively by dielectric disc tuning screw (114) and lay respectively at the top of two bimodulus dielectric resonators (108), and two dielectric tuning dishes (113) are all positioned at metallic cavity (101).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520433366.8U CN204809369U (en) | 2015-06-23 | 2015-06-23 | Bimodulus dielectric filter with novel adjustable coupling device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520433366.8U CN204809369U (en) | 2015-06-23 | 2015-06-23 | Bimodulus dielectric filter with novel adjustable coupling device |
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| CN204809369U true CN204809369U (en) | 2015-11-25 |
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| CN201520433366.8U Active CN204809369U (en) | 2015-06-23 | 2015-06-23 | Bimodulus dielectric filter with novel adjustable coupling device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107634291A (en) * | 2017-08-24 | 2018-01-26 | 南通大学 | A kind of dual-passband difference filter based on small-sized double dielectric resonator |
| CN110268575A (en) * | 2017-02-15 | 2019-09-20 | 埃瑟泰克微波有限公司 | Microwave resonator |
| CN110571504A (en) * | 2019-09-30 | 2019-12-13 | 吕传明 | assembly method of filter resonant cavity combined structure for communication base station |
-
2015
- 2015-06-23 CN CN201520433366.8U patent/CN204809369U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110268575A (en) * | 2017-02-15 | 2019-09-20 | 埃瑟泰克微波有限公司 | Microwave resonator |
| CN107634291A (en) * | 2017-08-24 | 2018-01-26 | 南通大学 | A kind of dual-passband difference filter based on small-sized double dielectric resonator |
| CN107634291B (en) * | 2017-08-24 | 2020-04-07 | 南通大学 | Dual-passband differential filter based on miniaturized dual-mode dielectric resonator |
| CN110571504A (en) * | 2019-09-30 | 2019-12-13 | 吕传明 | assembly method of filter resonant cavity combined structure for communication base station |
| CN110571504B (en) * | 2019-09-30 | 2021-09-28 | 吕传明 | Assembly method of filter resonant cavity combined structure for communication base station |
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