CN102683779B - Communication cavity device and elliptic function type high-pass filtering channel thereof - Google Patents
Communication cavity device and elliptic function type high-pass filtering channel thereof Download PDFInfo
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- CN102683779B CN102683779B CN201210157456.XA CN201210157456A CN102683779B CN 102683779 B CN102683779 B CN 102683779B CN 201210157456 A CN201210157456 A CN 201210157456A CN 102683779 B CN102683779 B CN 102683779B
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Abstract
The invention discloses an elliptic function type high-pass filtering channel, which comprises a cavity and a cover plate, wherein the cavity is provided with a lengthwise hollow cavity; a plurality of conductor rods which are sequentially and capacitively coupled are arranged along a lengthwise direction linearity of the hollow cavity; the conductor rods at two ends of the lengthwise direction are respectively and capacitively coupled with two connection ports arranged on the cavity; ends for realizing capacitive coupling are arranged between the adjacent conductor rods and/or the conductor rods and one connection ports; a sleeve is formed by a first end and a core column is formed by a second end; a core column of the second end is placed in the sleeve of the first end to form an open circuit coaxial cable, so as to realize the capacitive coupling; a coupling element is further arranged between the first end and the second end; the coupling element is a sheet-shaped medium piece which has two sides covered by conductive layers and is used for the core column to pass through; the two conductive layers are respectively connected with the first end and the second end. The high-pass filtering channel has the characteristics of simple structure, convenience for tuning, wide pass band, small insertion loss, high out-of-band suppression degree and the like.
Description
[technical field]
The present invention relates to a kind ofly for signal of communication being carried out to the communication cavity device of high-pass filtering, be specifically related to a kind of Elliptic Function Type high-pass filtering path.
[background technology]
Along with the development of the integration of three networks, various demands are produced by radio and television frequency range and mobile communication frequency range He road.Radio data system and mobile communication system close Lu Youqi particularity, between two systems, need higher isolation on the one hand, on the other hand because whole mobile communication frequency range is relatively wider, the mode that in traditional concept, mixer is realized by band pass filter cannot be satisfied the demands, at this moment, just need to adopt high pass filter just can deal with problems.
Traditional high pass filter tends to adopt series capacitance, but series capacitance itself is difficult to realization, thereby generally adopts the mode of lumped parameter.But there is the birth defects such as loss is large, standing wave is large in the high pass filter that lumped parameter mode realizes, has limited its application.
CN2059532U patent announcement, disclose a kind of broadband Highpass Filter with Extra Low Loss, it adopts the mode of coaxial transmission line to realize Chebyshev's type high pass filter, structure uniqueness, but the application scenarios narrow for transition band, Out-of-band rejection is high, still cannot satisfy the demands.
On the other hand, the technical scheme that CN2059532U patent announcement discloses, its structure is substantially curing, is not easy to the various parameters of flexible, there is no and benefits for product diversification.
[summary of the invention]
Primary and foremost purpose of the present invention is to overcome above-mentioned deficiency, a kind of flexible structure, excellent electrical properties is provided and meets the Elliptic Function Type high-pass filtering path that the integration of three networks is applied.
Another object of the present invention is to provide the communication cavity devices such as a kind of mixer/duplexer/filter that comprises described Elliptic Function Type high-pass filtering path.
For realizing object of the present invention, the present invention adopts following technical scheme:
Elliptic Function Type high-pass filtering path of the present invention, comprise the cavity and the cover plate that mount cover mutually, described cavity is provided with lengthwise type cavity, along cavity longitudinally linear array, multiple capacitively coupled stubs are successively set, in the stub at these longitudinally two ends respectively with this cavity on two connectivity port capacitive couplings arranging, in addition:
For realizing capacitively coupled each one end, wherein first end forms sleeve between adjacent conductor rod and/or between stub and connectivity port, and the second end forms stem stem, and the stem stem of the second end is placed in the sleeve of first end and forms open-ended probe, realizes capacitive coupling;
Between described first end and the second end, be also provided with coupling element, coupling element is the sheet medium part that two sides covers conductive layer and can pass for described stem stem, and these two conductive layers are connected with the second end with this first end respectively.
Further, the stub described at least one is provided with corresponding with it parallel resonance unit.
Disclose according to an embodiment of the present, described parallel resonance unit comprises the dielectric-slab that is fixed on this corresponding stub, inserts the default hole slot of cavity to form the resonant column of open-ended probe with cavity, and is arranged on this dielectric-slab for connecting the microstrip line of described stub and described resonant column.Described dielectric-slab is provided with breach, snaps in the default groove of described stub and realizes and fixing with this breach.Preferably, corresponding each described resonant column, is equipped with a tuning screw through described cover plate.
Disclose according to another embodiment of the present invention, described parallel resonance unit comprises default tuning wand, this tuning wand passes the default screwed hole in cavity side and inserts in slotted eye default on described stub, so that this tuning wand and this stub form open-ended probe.Preferably, between described tuning wand and described stub slotted eye, be provided with medium socket.
Concrete, described coupling element is plate-like, is provided with the through hole passing for described stem stem in the middle of it.
Further, the top of corresponding described stub, is provided with multiple tuning screws through described cover plate.Preferably, between the stem stem of described the second end and the sleeve of first end, be provided with medium socket.Described each stub is supported in described cavity top by medium block.
Communication cavity device of the present invention, its be in mixer, duplexer, filter any one, it comprises foregoing Elliptic Function Type high-pass filtering path.
Compared with prior art, tool of the present invention has the following advantages:
1, the present invention realizes series capacitance by the each one end between adjacent conductor rod, between adjacent conductor rod, realize coupling capacitance with stem stem and sleeve, also set up coupling element and strengthen capacitive coupling, can regulate by the conductive layer on amendment coupling element the coupling amount of equivalent capacity; In addition, its parallel resonance unit of setting up also allows, by regulating tuning screw or tuning wand to realize the adjustment of equivalent capacity coupling amount, can also change the position of transmission zero.
2, the filtering path of realizing by structure of the present invention, has that passband is wide, insertion loss is little, Out-of-band rejection degree high.For example, concrete passband frequency range is 885-2700MHz, insertion loss≤1.0dB, and inhibition degree >=30dB to DC-800MHz.
3, in structure, the mode being nested with multiple elements realizes series capacitance, makes the present invention have little, the convenient installation of volume, is applicable to the advantages such as production in enormous quantities.
[brief description of the drawings]
Fig. 1 is the package assembly schematic diagram of ellipse function high-pass filtering path of the present invention the first embodiment;
Fig. 2 is the details on Fig. 1 basis, and the package assembly schematic diagram between adjacent two stubs is shown;
Fig. 3 is the partial groups assembling structure schematic diagram of ellipse function high-pass filtering path of the present invention the second embodiment, is illustrated in the diagram that tuning wand is set on one of them stub.
[embodiment]
Below in conjunction with drawings and Examples, the present invention is further illustrated:
Refer to Fig. 1, in the package assembly schematic diagram of Elliptic Function Type high-pass filtering path of the present invention the first embodiment, this high-pass filtering path is design forming in a metallic cavity 2, mainly comprise the cavity 20 of the lengthwise type being formed in metallic cavity 2, be positioned at the longitudinally both sides of this cavity 20 and be fixed on two connectivity ports 31 on the chamber wall of metallic cavity 2, 32, and along the longitudinally linear array of this cavity 20 successively capacitive coupling to form some stubs 4 of series capacitance, the stub 4 that is positioned at these cavity 20 longitudinally two ends respectively with these two connectivity ports 31, 32 inner wire 310, 320 capacitive couplings connect, to realize signal two connectivity ports 31, transmission between 32.Cavity 20 tops of described metallic cavity 2 are also provided with cover plate 1, and cover plate 1 is fixed with cavity 2 phase screw locks.
In conjunction with Fig. 1 and Fig. 2, described each stub 4 is roughly lengthwise type column, and each stub 4 is all supported by the medium block 5 that is arranged on described cavity 20 bottoms, makes each stub 4 avoid contacting with the chamber wall of cavity 20.Between every adjacent two stubs 401,402, adopt capacity coupled mode to realize connection.Therefore, specifying neatly any one end in the mutual close each one end of two stubs 401,402 is first end 41, the other end is the second end 42, first end 41, the second end 42 definition herein obviously belong to respectively two adjacent different conductor rods 401,402, and they are oppositely arranged respectively.For the facility of explanation, the stub 4 that definition has a described first end 41 is the first stub 401, and the stub 4 with described the second end 42 is the second stub 402.
Further please continue to refer to Fig. 2, the described first end 41 of the first stub 401 is wherein designed to sleeve 41, described second end 42 of the second stub 402 is designed to stem stem 42, and this stem stem 42 is inserted in and in this sleeve 41, realizes the capacitive coupling between these two adjacent conductor rods 401,402.Certainly, can exchange the role of two stubs 401,402, described in arranging, there is the first end 41 of sleeve 41 on the second stub 402, and described in arranging, there is the second end 42 of stem stem 42 on the first stub 402.Any one stub 4, also described in the two ends of its longitudinally can being arranged to simultaneously, have sleeve 41 first end 41 or described in there is the second end 42 of stem stem 42, the now respective ends of adjacent conductor rod 4 on the other side, just should be had described in being designed to accordingly stem stem 42 the second end 42 or described in there is the first end 41 of sleeve 41.As can be seen here, the formation of the capacitive coupling relation between adjacent conductor rod 4 is very flexibly, can carry out suitable setting according to the mode providing above.
This capacitive coupling relation between adjacent conductor rod 4, is equally applicable to being connected between the stub 4 at lengthwise cavity 20 two ends and adjoining connectivity port 31,32.Particularly, one end of stub 4 towards described connectivity port 31,32 is designed to have to the first end 41 of sleeve 41, the inner wire of connectivity port 31,32 310,320 is stretched out to form second end 42 with stem stem 42, be inserted in the inner wire 310,320 of connectivity port 31,32 in the sleeve 41 of adjacent with it stub 4 and realize capacitive coupling.Two connectivity ports 31,32 all can adopt such realization that arranges.In like manner, also the inner wire of two connectivity ports 31,32 310,320 can be designed to sleeve 41, and the respective ends of adjacent with it stub 4 is designed to stem stem 42, to realize capacitive coupling each other.As can be seen here, the capacitive coupling relation between stub 4 and connectivity port 31,32 is also that the existing connected mode that can provide according to the present invention realizes flexibly.
Coupling amount in capacitive coupling relation in order further to strengthen between aforementioned adjacent conductor rod 4, between stub 4 and connectivity port 31,32, adopt sheet medium part to design a coupling element 40, this coupling element 40 is plate-like, the two sides of dish all covers conductive layer (not shown) is set, the area of conductive layer, shape, position are set flexibly according to the actual demand of coupling amount, and the middle part of coupling element 40 arranges a through hole 409.Be that every place or the connection partly with capacitive coupling relation arrange described coupling element 40 neatly, make in interconnective first end 41 and the second end 42, the stem stem 42 of the second end 42 is through after the through hole 409 of coupling element 40, the sleeve 41 that is placed in first end 41 is realized coupling, wherein the conductive layer of coupling element 40 face and the sleeve 41 of first end 41 are electrically connected, and the stem stem 42 of the conductive layer of another face and the second end 42 is electrically connected.By such setting, just can, by shape and the size of two conductive layers of amendment coupling element 40, reach the object of the coupling amount of control capacittance coupled relation.
In addition, in order to strengthen capacitive annexation, between the sleeve 41 of described first end 41 and the stem stem 42 of the second end 42, a medium socket 43 is set, guarantees the insulation between stem stem 42 and sleeve 41.
As previously mentioned, between multiple stubs 4, between stub 4 and connectivity port 31,32, adopting above-mentioned capacitive coupling connected mode to realize is connected, can realizes the transmission of signal between two connectivity ports 31,32.Form the open-ended probe with low impedance characteristic in the mode of assembling mutually by stem stem 42 and sleeve 41 between stub 4 between two, for the series capacitance of equivalent filter path.Same mode also goes between stub 4 and connectivity port 31,32.
Further please again consult Fig. 1, in the present embodiment, each described equal correspondence of stub 4 is provided with parallel resonance unit (not label), this parallel resonance unit comprises a dielectric-slab 61, is printed on the microstrip line 63 on dielectric-slab 61, and is arranged on the resonant column 62 in the default hole slot 60 of cavity 2.
Described dielectric-slab 61 bottoms arrange a breach 610, are fastened in annular groove 408 default on corresponding stub 4, to realize dielectric-slab 61 fixing in cavity 20 with this breach 610.On the corresponding cavity 2 of a side of dielectric-slab 61, be preset with the described hole slot 60 of a column, described resonant column 62 fixes with this side of dielectric-slab 61, and inserts in the default hole slot 60 of described cavity 2, forms the open-ended probe with low impedance characteristic.Described microstrip line 63 is printed on dielectric-slab 61 surfaces, and one end connects corresponding stub 4, and the other end connects described resonant column 62, to realize the series inductance of this parallel resonance unit.In addition, on cover plate 1, arrange some through cover plate 1 self to arrive the tuning screw 67 of described resonant column 62, to carry out tuning in outside to parallel resonance unit by those tuning screws 67.
Whether in the present invention, can select according to actual needs is that stub 4 arranges described parallel resonance unit, utilizes the external diameter of the resonant column 62 in parallel resonance unit, the variation of height, in like manner can realize the adjusting of coupling amount.
In addition, the present invention also, on cover plate 1, corresponding to the top, position of described each stub 4, is respectively arranged with tuning screw 47, to realize tuning in outside by those tuning screws 47.
The Elliptic Function Type high-pass filtering path of the present invention that above the first embodiment discloses, the flexile feature of regulative mode.
Refer to Fig. 3, in the second embodiment of Elliptic Function Type high-pass filtering path of the present invention, disclose a kind of parallel resonance unit (not label) that last embodiment discloses that is different from, this parallel resonance unit comprises some default tuning wands 71.The screwed hole 70 of some perforations to described lengthwise cavity 20 is set on a side of described cavity 2, the described corresponding described deep slotted eye 74 of each screwed hole 70 preset radial of each stub 4, described each tuning wand 71 is correspondingly through described each screwed hole 70, its deep one end 711 is inserted in the slotted eye 74 of a corresponding described stub 4 to realize with it capacitive coupling, and this of tuning wand 71 deeply hold 711 and this slotted eye 74 of stub 4 between a sheathed medium socket 72 be connected to guarantee capacitive, 712, the external end of each tuning wand 71 is threaded with the corresponding screwed hole 70 of described cavity 2.The degree of depth of going deep into its corresponding slotted eye 74 by each tuning wand 71 of independent adjusting, can realize the adjusting of coupling amount.Thereby realize the control to filtering path.
The design of the present embodiment, than last embodiment, obviously has more succinct feature.
In sum, Elliptic Function Type high-pass filtering path of the present invention, adopts distributed constant formula to realize, simple in structure, facilitate tuningly, and has that passband is wide, insertion loss is little, Out-of-band rejection degree high.Can be widely used in mobile communication equipment field.For example survey in case, concrete passband frequency range is 885-2700MHz, insertion loss≤1.0dB, and inhibition degree >=30dB to DC-800MHz.This high-pass filtering path can be used as communication cavity 2 devices such as mixer, filter or duplexer.
Although the present invention only provides above embodiment, but, those skilled in the art are reading over after this specification, in conjunction with common practise, should be able to associate more embodiment, but such embodiment is the spirit of unconventional the claims in the present invention not, any type of being equal to, replaces or embodiment that simple modification all should be considered as being included by the present invention.
Claims (12)
1. an Elliptic Function Type high-pass filtering path, comprise the cavity and the cover plate that mount cover mutually, described cavity is provided with lengthwise type cavity, along cavity longitudinally linear array, multiple capacitively coupled stubs are successively set, in the stub at these longitudinally two ends respectively with this cavity on two connectivity port capacitive couplings arranging, it is characterized in that:
For realizing capacitively coupled each one end, wherein first end forms sleeve between adjacent conductor rod and/or between stub and connectivity port, and the second end forms stem stem, and the stem stem of the second end is placed in the sleeve of first end and forms open-ended probe, realizes capacitive coupling;
Between described first end and the second end, be also provided with coupling element, coupling element is the sheet medium part that two sides covers conductive layer and can pass for described stem stem, and the conductive layer that this two sides covers is connected with the second end with this first end respectively.
2. Elliptic Function Type high-pass filtering path according to claim 1, is characterized in that, the stub described at least one is provided with corresponding with it parallel resonance unit.
3. Elliptic Function Type high-pass filtering path according to claim 2, it is characterized in that, described parallel resonance unit comprise be fixed on this with it the dielectric-slab on corresponding stub, insert the default hole slot of cavity to form the resonant column of open-ended probe with cavity, and be arranged on this dielectric-slab for connecting the microstrip line of described stub and described resonant column.
4. Elliptic Function Type high-pass filtering path according to claim 3, is characterized in that, described dielectric-slab is provided with breach, snaps in the default groove of described stub and realizes and fixing with this breach.
5. Elliptic Function Type high-pass filtering path according to claim 3, is characterized in that, corresponding each described resonant column is equipped with a tuning screw through described cover plate.
6. Elliptic Function Type high-pass filtering path according to claim 2, it is characterized in that, described parallel resonance unit comprises default tuning wand, this tuning wand passes the default screwed hole in cavity side and inserts in slotted eye default on described stub, so that this tuning wand and this stub form open-ended probe.
7. Elliptic Function Type high-pass filtering path according to claim 6, is characterized in that, between described tuning wand and described stub slotted eye, is provided with medium socket.
8. according to the Elliptic Function Type high-pass filtering path described in any one in claim 1 to 7, it is characterized in that, described coupling element is plate-like, is provided with the through hole passing for described stem stem in the middle of it.
9. according to the Elliptic Function Type high-pass filtering path described in any one in claim 1 to 7, it is characterized in that the top of corresponding described stub is provided with multiple tuning screws through described cover plate.
10. according to the Elliptic Function Type high-pass filtering path described in any one in claim 1 to 7, it is characterized in that, between the stem stem of described the second end and the sleeve of first end, be provided with medium socket.
11. according to the Elliptic Function Type high-pass filtering path described in any one in claim 1 to 7, it is characterized in that, described in each, stub is supported in described cavity top by medium block.
12. 1 kinds of communication cavity devices, its be in mixer, duplexer, filter any one, it is characterized in that, it comprises the Elliptic Function Type high-pass filtering path as described in any one in claim 1 to 11.
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Families Citing this family (6)
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| CN103855447B (en) * | 2012-11-29 | 2017-11-28 | 京信通信系统（中国）有限公司 | Cavity devices and its Elliptic Function Type low pass filter |
| CN206116577U (en) * | 2016-06-28 | 2017-04-19 | 华为技术有限公司 | Combiner, antenna and communication equipment |
| CN106602191A (en) * | 2016-12-14 | 2017-04-26 | 京信通信技术(广州)有限公司 | High-performance band-stop filter and the communication cavity component thereof |
| CN108270058B (en) * | 2016-12-30 | 2020-11-10 | 京信通信技术(广州)有限公司 | Double-layer cavity combiner and coupling device thereof |
| CN109103554A (en) * | 2017-06-21 | 2018-12-28 | 罗森伯格技术（昆山）有限公司 | adjustable waveguide filter |
| CN112864554B (en) * | 2020-12-31 | 2022-03-22 | 京信通信技术(广州)有限公司 | Filtering combining structure and combining phase shifter |
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| CN102354778A (en) * | 2011-08-24 | 2012-02-15 | 京信通信系统（中国）有限公司 | Elliptic function low-path filtering path and communication cavity device adopting same |
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Effective date of registration: 20230825 Address after: 510730, No. 6, Jin Lu, Guangzhou economic and Technological Development Zone, Guangdong, Guangzhou Patentee after: COMBA TELECOM TECHNOLOGY (GUANGZHOU) Ltd. Patentee after: COMBA TELECOM SYSTEMS (GUANGZHOU) Ltd. Address before: 510730 No. 6, layered Road, Guangzhou economic and Technological Development Zone, Guangdong Patentee before: COMBA TELECOM TECHNOLOGY (GUANGZHOU) Ltd. |