CN202585690U - Communication cavity device and ellipse function type low pass filtering access - Google Patents
Communication cavity device and ellipse function type low pass filtering access Download PDFInfo
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- CN202585690U CN202585690U CN 201120379218 CN201120379218U CN202585690U CN 202585690 U CN202585690 U CN 202585690U CN 201120379218 CN201120379218 CN 201120379218 CN 201120379218 U CN201120379218 U CN 201120379218U CN 202585690 U CN202585690 U CN 202585690U
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Abstract
The utility model mainly discloses an ellipse function type low pass filtering access which can be applied on communication cavity devices such as a combiner, a diplexer and a filter and comprises a cavity and a cover plate, the cover plate covering on the cavity. The cavity is provided with a lengthwise cavity; two sides in a cavity lengthwise direction respectively form a coupling end port; a conductor bar used for electrically connecting the two coupling end ports is formed in the cavity; a plurality of fixed tuning plates in electric connection with the conductor bar are arranged along a lengthwise direction of the conductor bar and above the conductor bar; each fixed tuning plate is provided with a movable tuning plate; each movable tuning plate is in connection with a corresponding tuning screw traversing the cover plate; the fixed tuning plates and the movable tuning plates do not contact with each other so as to realize capacitive coupling. The ellipse function type low pass filtering access possesses the characteristics of a simple structure, a flexible realization mode, an excellence electrical performance, etc. In addition, the utility model provides a communication cavity device.
Description
[technical field]
The utility model relates to a kind of communication cavity devices that is used for signal of communication is carried out LPF, is specifically related to a kind of elliptic function type LPF path.
[background technology]
Along with the development of the integration of three networks, market has proposed the road demand of closing of systems such as cable television system, video on-demand system and GSM, WLAN.Owing to need higher isolation between above-mentioned each system, therefore, need a kind of high performance low pass filter to realize the path of cable television system, video on-demand system, needing simultaneously has higher inhibition degree to systems such as GSM, WLAN.Traditional low pass filter is owing to the restriction of its implementation, and transition band width is with outer inhibition degree low, can not satisfy market demands, needs to introduce new implementation.
The CN201110247335.X patent application that on August 24th, 2011 submitted to; Disclose a kind of elliptic function type LPF path and adopt its communication cavity devices; The unique texture form that it adopts stub to traverse cavity can realize suppressing outside the higher band under the situation of transition band broad.But the outer high scene of inhibition degree of, band narrow for transition band but is short of perfect rather.For example, be provided with a passband 01600MHz, insert loss and hope to be controlled at below the 1.0dB; To the band of 17102700MHz frequency range outward degree of inhibition hope more than 40dB; It is thus clear that the transition band between these two frequency ranges is very narrow, relative bandwidth has only 6.6%; But it is little to insert loss, and the outer inhibition degree of band is but very high.Realize these indexs, no matter be theory or actual measurement, aforementioned patent all can't satisfy this requirement.
For this reason, need further seek a kind of more high performance elliptic function type LPF path, so as narrow in transition band, insert under the little situation of loss, make the near-end band outward degree of inhibition further improve, remedy the deficiency of the technical scheme of aforementioned patent applications.
[utility model content]
The primary and foremost purpose of the utility model is to overcome above-mentioned deficiency, a kind of structure uniqueness, excellent electrical properties is provided and satisfies the elliptic function type LPF path that the integration of three networks is used.
Another purpose of the utility model is to provide communication cavity devices such as a kind of mixer/duplexer/filter that comprises said elliptic function type LPF path.
For realizing the purpose of the utility model, the utility model adopts following technical scheme:
The elliptic function type LPF path of the utility model; Comprise the cavity and the cover plate of lid dress mutually; Said cavity is provided with lengthwise type cavity, is formed with the connectivity port respectively in cavity longitudinally both sides, is provided with the stub of the electric connection that is used to realize two connectivity ports in the cavity; Along this stub longitudinally, above said stub, be provided with some fixing tuning dishes that electrically connect with this stub; Corresponding each fixing tuning dish is equipped with movable tuning dish, and each movable tuning dish is connected with one that passes said cover plate corresponding tuning screw rod mutually, does not contact mutually so that capacitive is coupled between fixing tuning dish and the movable tuning dish.
Embodiment according to the utility model discloses; At least one described fixing tuning dish; Be fixed on and also pass through dielectric-slab and said stub maintenance relative position relation on the dielectric-slab, be printed with the microstrip line that this fixing tuning dish and stub are electrically connected on the dielectric-slab.Fixing tuning dish to fixing through dielectric-slab and stub is formed with carrier on the said stub, and this carrier is used to dielectric-slab location and fixing said dielectric-slab are provided.
Dielectric-slab with following two kinds or similarly mode be connected with carrier:
One of which; Said dielectric-slab bottom is provided with conduit; Definition is fluted on the carrier of said stub; Dielectric-slab matches with its conduit and the groove of carrier and realizes firmly being connected the location, and microstrip line one end of printing on the dielectric-slab and said fixing tuning dish electrically connect, and the other end and said carrier electrically connect.Preferable, said groove is the circumferential setting around said stub.
They are two years old; Said dielectric-slab bottom is provided with conduit; The porose position of definition on the carrier of said stub, a cylindrical member one end welds with the conduit of dielectric-slab mutually, and the other end matches with the position, hole of carrier and realizes firmly being connected the location; Microstrip line one end of printing on the dielectric-slab and said fixing tuning dish electrically connect, and the other end electrically connects through said cylindrical member and said carrier.Preferable, said Kong Weiwei screw, the end that said cylindrical member cooperates with the position, hole is a double-screw bolt.
As the simplified structure of this embodiment, all fixing tuning dishes all keep relative position relation with identical structure and said stub.
Another embodiment according to the utility model discloses, and at least one described fixing tuning dish is fixed on the cylindrical rods also through this cylindrical rods and said stub maintenance relative position relation and electric connection.Fixing tuning dish to being connected with said stub through said cylindrical rods is formed with carrier on the said stub, and this carrier is used to said cylindrical rods location and fixing said cylindrical rods are provided.The porose position of said carrier definition, said cylindrical rods one end sets firmly with said fixing tuning dish mutually, and the other end matches with the position, hole of carrier and realizes firmly being connected the location.
Preferable, said Kong Weiwei screw, the end that said cylindrical rods cooperates with the position, hole is a double-screw bolt.Said fixing tuning dish and said cylindrical rods are one-body molded.
In like manner, as the simplified structure of present embodiment, all fixing tuning dishes all keep relative position relation with identical structure and said stub.
In other embodiment of the utility model; More than can intersect use between two kinds of embodiment; For example; The said structure contain dielectric-slab and the said structure that contains cylindrical rods are set among same LPF path simultaneously, and the variety of way that combines can adopt flexibly equally above-mentioned disclosure between the carrier of dielectric-slab and stub wherein.
Communication such as the mixer/duplexer of the utility model/filter cavity devices includes above-mentioned ellipse function LPF path.
Compared with prior art, the utlity model has following advantage:
1, the elliptic function type LPF path of the utility model; Be on the basis of traditional sugarcoated haws shape low pass filter; The harmonic oscillator that its Low ESR is partly replaced an equivalent inductance capacitances in series is incorporated primary path into; The equivalent inductance of this harmonic oscillator realizes by the microstrip line or the cylindrical rods of fixing tuning dish that are printed on the dielectric-slab, and equivalent capacity realizes the novel uniqueness of this implementation by fixing tuning dish and slit coupling between the movable tuning dish.
2, the elliptic function type LPF path of the utility model; Have transition band narrow, insert that loss is little, standing-wave ratio is little, the near-end band outward degree of inhibition height, suppress advantages such as frequency range is wide, thereby satisfy the application scenarios of narrow transition band, low insertion loss, the requirement of high inhibition degree.Have only in the frequency range environment of 6.6% 01600MHz and two actual measurements of 17102700MHz in the transition band relative bandwidth, insert loss and can be controlled in below the 1.0dB, the outer inhibition degree of band can reach more than the 40dB.
3, the elliptic function type LPF path of the utility model, its all parts compact are easy to processing, and low to the required precision of processing and assembling, are suitable for producing in enormous quantities.
[description of drawings]
Fig. 1 is the package assembly sketch map of preferred embodiment of the elliptic function type LPF path of the utility model;
Fig. 2 is dielectric-slab of the utility model and a kind of assembled relation sketch map between its peripheral accessory;
Fig. 3 be the utility model lid with Fig. 1 in the structural representation of the reverse another side of lid;
Fig. 4 is the package assembly sketch map of another embodiment of the elliptic function type LPF path of the utility model, and wherein lid is omitted;
Fig. 5 is dielectric-slab of the utility model and the another kind of assembled relation sketch map between its peripheral accessory.
[embodiment]
Below in conjunction with accompanying drawing and embodiment the utility model is further described:
See also Fig. 1; In the package assembly sketch map of the elliptic function type LPF path preferred embodiment of the utility model, this LPF path designs formation in a metallic cavity 11, mainly comprises the cavity 10 that is formed at the lengthwise type in the metallic cavity 11, is positioned at the longitudinally both sides of this cavity 10 and is fixed on two connectivity ports 112 on the chamber wall of metallic cavity 11; 114; And a stub 2, the two ends of this stub 2 are direct-connected with the inner wire (not shown) of these two connectivity ports 112,114 respectively; To realize the transmission of two signals between the connectivity port 112,114.Cavity 10 tops of said metallic cavity 11 also are provided with lid 12, and lid 12 and cavity 11 screw lock are mutually fixed.
Said stub 2 comprises less body of diameter 21 and the thicker carrier 223,224 of a plurality of diameters, each carrier 223, all separates certain distance between 224 and is provided with.Described carrier 223,224 is divided into two types, and two types of carriers 223,224 are respectively applied for various structure and install and fix tuning dish 3.Below describe to two types of carriers 223,224 respectively:
First kind of carrier 223 is provided with the groove 220 around the circumferential annular setting of stub 2; This groove 220 is divided into itself carrier 223 axially goes up relative two parts, and the matching relationship of two parts and groove 220 can be used for the dielectric-slab 4 of direct clamping the utility model thus.
Second kind of carrier 224 is provided with the position, hole 228 that radially deeply is provided with along stub 2, and this position, hole 228 is a screw, so that match with threaded parts, and the fixing tuning dish 3 of the utility model is set above those parts.
The structure that adapts to first kind of carrier 223; One dielectric-slab 4 as shown in Figure 2 is set, and these dielectric-slab 4 tops and a fixing tuning dish 3 welds mutually to be fixed, and the bottom of dielectric-slab 4 then is provided with the conduit 40 of a lengthwise; It is semicircle that the end of travel of conduit 40 becomes; Thus, dielectric-slab 4 installation that can match with this first kind of carrier 223, conduit 40 perisporiums of this dielectric-slab 4 just closely cooperate with the groove 220 of this carrier 223; Realize the fixed installation between dielectric-slab 4 and the stub 2, make it keep the relative position relation of fixing each other.Be printed with the microstrip line 8 that makes said fixing tuning dish 3 and said carrier 223 (promptly being connected to stub 2) on the dielectric-slab 4; When dielectric-slab 4 fixed with first kind of carrier 223 fixing tuning dish 3 and stub 2, those microstrip lines 8 just can play the effect of equivalent inductance.
The structure that adapts to second kind of carrier 224; One cylindrical rods 5 is set; One end of this cylindrical rods 5 is that its bottom is designed to double-screw bolt 58; And with the screw (being position, hole 228) of this double-screw bolt 58 and this second kind of carrier 224 screw lock mutually, the other end of cylindrical rods 5 is that (perhaps one-body molded) then welded with a fixing tuning dish 3 mutually in its top.Thus, on the structure, this fixing tuning dish 3 just passes through the positioning relation of this cylindrical rods 5; And form fixing relative position relation between the stub 2; And, electric on, fixing tuning dish 3 also realized through cylindrical rods 5 and stub 2 (through this carrier 224) between electrical connection.The cylindrical rods 5 has here played the effect of equivalent inductance.Through regulating the relative screw lock position between cylindrical rods 5 and this carrier 224; Can adjust the height of fixing tuning dish 3 in cavity 10 at cylindrical rods 5 tops; It is tuning to realize thereby can match with the movable tuning dish 9 of the utility model, becomes a kind of tuning means of preparation.
Please continue to consult Fig. 1; Along a plurality of carriers 223,224 tops of the axial setting of stub 2, a part is through dielectric-slab 4, and another part is through cylindrical rods 5; Be provided with a plurality of fixing tuning dishes 3; These fixing tuning dishes 3 respectively have a tuning dish 9 of activity to cooperate installation with it, and realize their capacitive couplings each other through reserving gaps between fixing tuning dish 3 and movable tuning dish 9, realize the effect of equivalent capacity.
Please combine Fig. 1 and Fig. 3; On the described lid 12, a plurality of fixing tuning dish 3 that exists in the corresponding said cavity 10 is provided with corresponding several screws of number; The equal correspondence of each screw is provided with a tuning screw rod 120; One end of tuning screw rod 120 is a nut, exposes to whole cavity 11, and the other end is provided with the cavity 10 that gos deep into this cavity 11 and forms the tuning dish 9 of capacitively coupled activities to fix tuning dish 3 accordingly with a position; Through adjusting the screw lock position between any tuning screw rod 120 and lid 12 screws, can realize tuning effect to the LPF path of the utility model.Form a capacitively coupled each other fixing tuning dish 3 and the tuning dish 9 of activity, their radially area etc. are big, and coincide in vertical direction but do not contact mutually all the time, so that reach the coupling effect of the best.
Can know through above-mentioned description; In the preferred embodiment of the utility model; Said each fixing tuning dish 3 keeps relative position relation and two kinds of structures of the common mistake of electrical connection to realize with stub 2; The first realizes by cooperate location and the fixed clamp relation between dielectric-slab 4 and the first kind of carrier 223, and another then is to cooperate location and fixedly screw lock relation realization between the screw 228 of double-screw bolt 58 and second kind of carrier 224 through cylindrical rods 5.In another embodiment of the utility model, with further disclosing the fit system that other is used to keep relative position relation between fixing tuning dish 3 and the stub 2.
See also Fig. 4, another embodiment of the elliptic function type LPF path of the utility model has the structure that is different from last embodiment, is that mainly wherein the tuning dish 3 of partial fixing is different with the mounting structure between the stub 2, specifically please combine Fig. 4 and Fig. 5.
In the present embodiment, second kind of carrier 224 only is set on the stub 2, but this kind carrier 224 is different with the concrete mounting structure of fixing tuning dish 3.Wherein, Part carrier directly keeps relative position relation and electrical connection through cylindrical rods 5 and fixing tuning dish 3, and another part then keeps relative position relation and electrical connection through the support and the electric connection effect of cylindrical member 6 and dielectric-slab 4 with fixing tuning dish 3.
Dielectric-slab 4 shown in Fig. 5; Has relatively short vertical height with respect to last embodiment dielectric-slab 4 shown in Figure 2; Its welded top has fixing tuning dish 3; The bottom is formed with conduit 40 and welds mutually with a cylindrical member 6 at conduit 40 places, and dielectric-slab 4 surfaces are printed with two ends and fix the microstrip line 8 that tuning dish 3 is connected with this cylindrical member 6 with this respectively, thus; Form fixing structure annexation between fixing tuning dish 3, dielectric-slab 4, the cylindrical member 6, then formed fixing electric connecting relation between fixing tuning dish 3, microstrip line 8, the cylindrical member 6.One end entire body of said cylindrical member 6 non-welding forms double-screw bolt 68; By this double-screw bolt 68 can screw lock match with the screw (being position, hole 228) of said second kind of carrier 224; The relative position relation that fixing tuning dish 3, dielectric-slab 4, cylindrical member 6 are all fixed with stub 2 maintenances keeps electrical connection simultaneously.In like manner, through regulating the screw lock position between cylindrical member 6 and this kind carrier 224, also can realize tuning effect.
Can find out by present embodiment; The cylindrical member 6 of present embodiment is similar to the cylindrical rods 5 of last embodiment; The syndeton that fixing tuning dish 3 that is different from last embodiment that present embodiment adopted and stub are 2; Be the comprehensive of two kinds of different syndetons among the last embodiment, wherein existing microstrip line 8 is used to play the effect of equivalent inductance, and there have cylindrical member 6 can be used for again to be tuning.Also can inspire those skilled in the art's thinking thus, relative position relation between promptly said fixing tuning dish 3 and the stub 2 and electrical connection can keep through the alternate manner that does not receive above embodiment and limited to.For example:
In the not shown another embodiment of the utility model, said stub 2 only is provided with said first kind of carrier 223, and, all fixing tuning dishes 3 all only realize with dielectric-slab 4 and stub 2 between the maintenance of relative position relation.
Same in another not shown embodiment of the utility model, said stub 2 only is provided with said second kind of carrier 224, and all fixing tuning dishes 3 are all only with the maintenance of the relative position relation between said cylindrical rods 5 realizations and the stub 2.
And in the not shown embodiment again of the utility model; Said stub 2 only is provided with said second kind of carrier 224; And all fixing tuning dishes 3 are all only with the specific fit structure realization of said cylindrical member 6 among the utility model second embodiment and dielectric-slab 4 and the maintenance of the relative position relation between the stub 2.
In sum; The elliptic function type LPF path of the utility model has simple in structure; Implementation is flexible, and characteristics such as electric property excellence have only in the frequency range environment of 6.6% 01600MHz and two actual measurements of 17102700MHz in the transition band relative bandwidth; Insert loss and can be controlled in below the 1.0dB, the outer inhibition degree of band can reach more than the 40dB.The elliptic function type LPF path of the utility model is applied in mixer, duplexer or the filter, can brings into play the performance of the high inhibition degree of its high bandwidth better.
Although the utility model only provides above embodiment; But; Those skilled in the art in conjunction with common practise, should be able to associate more embodiment after reading over this specification; But the spirit of the not unconventional the utility model claim of such embodiment any type ofly is equal to replacement or simple modification all should be regarded as by the included embodiment of the utility model.
Claims (20)
1. elliptic function type LPF path; Comprise the cavity and the cover plate of lid dress mutually, said cavity is provided with lengthwise type cavity, is formed with the connectivity port respectively in cavity longitudinally both sides; Be provided with the stub of the electric connection that is used to realize two connectivity ports in the cavity, it is characterized in that:
Along this stub longitudinally, above said stub, be provided with some fixing tuning dishes that electrically connect with this stub; Corresponding each fixing tuning dish is equipped with movable tuning dish; Each movable tuning dish is connected with one that passes said cover plate corresponding tuning screw rod mutually, does not contact mutually so that capacitive is coupled between fixing tuning dish and the movable tuning dish.
2. elliptic function type LPF path according to claim 1; It is characterized in that; At least one described fixing tuning dish; Be fixed on and also pass through dielectric-slab and said stub maintenance relative position relation on the dielectric-slab, be printed with the microstrip line that this fixing tuning dish and stub are electrically connected on the dielectric-slab.
3. elliptic function type LPF path according to claim 2; It is characterized in that; Fixing tuning dish to fixing through dielectric-slab and stub is formed with carrier on the said stub, and this carrier is used to dielectric-slab location and fixing said dielectric-slab are provided.
4. elliptic function type LPF path according to claim 3; It is characterized in that; Said dielectric-slab bottom is provided with conduit, on the carrier of said stub definition fluted, dielectric-slab matches with its conduit and the groove of carrier and realizes the firm location that is connected; Microstrip line one end of printing on the dielectric-slab and said fixing tuning dish electrically connect, and the other end and said carrier electrically connect.
5. elliptic function type LPF path according to claim 4 is characterized in that said groove is the circumferential setting around said stub.
6. elliptic function type LPF path according to claim 3; It is characterized in that said dielectric-slab bottom is provided with conduit, the porose position of definition on the carrier of said stub; One cylindrical member, one end welds with the conduit of dielectric-slab mutually; The other end matches with the position, hole of carrier and realizes firmly being connected the location, and microstrip line one end of printing on the dielectric-slab and said fixing tuning dish electrically connect, and the other end electrically connects through said cylindrical member and said carrier.
7. elliptic function type LPF path according to claim 6 is characterized in that, said Kong Weiwei screw, and the end that said cylindrical member cooperates with the position, hole is a double-screw bolt.
8. according to any described elliptic function type LPF path in the claim 2 to 7, it is characterized in that all fixing tuning dishes all keep relative position relation with identical structure and said stub.
9. elliptic function type LPF path according to claim 1 is characterized in that, at least one described fixing tuning dish is fixed on the cylindrical rods also through cylindrical rods and said stub maintenance relative position relation and electric connection.
10. elliptic function type LPF path according to claim 9; It is characterized in that; Fixing tuning dish to being connected with said stub through cylindrical rods is formed with carrier on the said stub, and this carrier is used to cylindrical rods location and fixing said cylindrical rods are provided.
11. elliptic function type LPF path according to claim 10 is characterized in that, the porose position of said carrier definition, and said cylindrical rods one end sets firmly with said fixing tuning dish mutually, and the other end matches with the position, hole of carrier and realizes firmly being connected the location.
12. elliptic function type LPF path according to claim 11 is characterized in that, said Kong Weiwei screw, and the end that said cylindrical rods cooperates with the position, hole is a double-screw bolt.
13. elliptic function type LPF path according to claim 11 is characterized in that, said fixing tuning dish and said cylindrical rods are one-body molded.
14. according to any described elliptic function type LPF path in the claim 2 to 7; It is characterized in that; At least one described fixing tuning dish is fixed on the cylindrical rods also through cylindrical rods and said stub maintenance relative position relation and electric connection.
15. elliptic function type LPF path according to claim 14; It is characterized in that; Fixing tuning dish to being connected with said stub through cylindrical rods is formed with carrier on the said stub, and this carrier is used to cylindrical rods location and fixing said cylindrical rods are provided.
16. elliptic function type LPF path according to claim 15 is characterized in that, the porose position of said carrier definition, and said cylindrical rods one end sets firmly with said fixing tuning dish mutually, and the other end matches with the position, hole of carrier and realizes firmly being connected the location.
17. elliptic function type LPF path according to claim 16 is characterized in that, said Kong Weiwei screw, and the end that said cylindrical rods cooperates with the position, hole is a double-screw bolt.
18. elliptic function type LPF path according to claim 16 is characterized in that, said fixing tuning dish and said cylindrical rods are one-body molded.
19., it is characterized in that all fixing tuning dishes all keep relative position relation with identical structure and said stub according to any described elliptic function type LPF path in the claim 9 to 13.
20. one kind communication cavity devices, in mixer, duplexer, the filter any one, it is characterized in that it comprises like any described elliptic function type LPF path in the claim 1 to 19.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120379218 CN202585690U (en) | 2011-09-27 | 2011-09-27 | Communication cavity device and ellipse function type low pass filtering access |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120379218 CN202585690U (en) | 2011-09-27 | 2011-09-27 | Communication cavity device and ellipse function type low pass filtering access |
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| CN202585690U true CN202585690U (en) | 2012-12-05 |
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| CN 201120379218 Expired - Lifetime CN202585690U (en) | 2011-09-27 | 2011-09-27 | Communication cavity device and ellipse function type low pass filtering access |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102412433A (en) * | 2011-09-27 | 2012-04-11 | 京信通信系统（中国）有限公司 | Communication cavity device and elliptic function low-pass filter path |
-
2011
- 2011-09-27 CN CN 201120379218 patent/CN202585690U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102412433A (en) * | 2011-09-27 | 2012-04-11 | 京信通信系统（中国）有限公司 | Communication cavity device and elliptic function low-pass filter path |
| CN102412433B (en) * | 2011-09-27 | 2014-01-29 | 京信通信系统（中国）有限公司 | Communication cavity device and elliptic function low-pass filter path |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20121205 Effective date of abandoning: 20140129 |
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| RGAV | Abandon patent right to avoid regrant |