CN206116572U - Cavity filter and low -pass filter structure thereof - Google Patents
Cavity filter and low -pass filter structure thereof Download PDFInfo
- Publication number
- CN206116572U CN206116572U CN201620994168.3U CN201620994168U CN206116572U CN 206116572 U CN206116572 U CN 206116572U CN 201620994168 U CN201620994168 U CN 201620994168U CN 206116572 U CN206116572 U CN 206116572U
- Authority
- CN
- China
- Prior art keywords
- low
- pass filter
- filter structure
- transmission conductor
- structure according
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Control Of Motors That Do Not Use Commutators (AREA)
Abstract
The utility model provides a cavity filter and low pass filter structure, this low -pass filter structure includes the main cavity body, apron and transmission conductor, the internal portion of main cavity is equipped with a plurality of filtering chambeies, the apron lid is located the opening part in a plurality of filtering chambeies, it is right in order to realize sealing of a plurality of filtering chambeies is equipped with logical groove between the adjacent filtering chamber, transmission conductor runs through lead to the groove and insert and establish a plurality of filtering intracavitys. Compared with the prior art, the utility model provides a cavity filter and low pass filter structure, its each component structure is simple, and the processing cost is low, and the commonality is good, simple to operate, under the prerequisite of specified performance, can realize volume productionization and high efficiency.
Description
Technical field
The utility model is related to a kind of communications part, more particularly to a kind of cavity body filter and its low pass filter knot
Structure.
Background technology
Cavity body filter is a kind of frequency filter device, i.e. the signal of the frequency range to needing is selected, to not needing frequency
The signal of section is suppressed, and wave filter is widely used in the communication fields such as radio frequency, microwave.At present in radio frequency, microwave frequency band application
Widest wave filter is coaxial cavity filter, and the coupling that it passes through to adjust between the resonant frequency and cavity of multiple cavities is strong
Degree forms desired operating characteristic.
Because resonator can produce resonance in multiple frequency ranges, usual lowest frequency pattern is higher mode required for wave filter
Must be suppressed, just not interfere with the overall performance of wave filter.Therefore wave filter is usually used in series with low pass filter.It is low
Bandpass filter is usually used high low-impedance step form and realizes, that sugarcoated haws string is usually used is coaxial for low pass in existing conventional cavity
The high low-impedance line structure of structure, strip line and microband paste formula structure.
Above conventional structure, be all by the way that part is processed into into different shapes, in relatively regular cavity body structure,
High low impedance transmission line is realized, and then realizes lowpass function.Refer to Fig. 1, Fig. 1 is that low-pass filter structure is cutd open in prior art
View.The mechanism that can be seen that its transmission conductor 3 from the structure is complicated, this can bring low pass part processing cost is higher, essence
Multiple problems such as degree control is strict, install fool proof is difficult, material poor universality, these problems usually become volume production cost and performance
Bottleneck problem.In addition, in figure label 1 be cavity, 2 be cover plate, 4 be dielectric and 5 be mounting screw.
Utility model content
The utility model provides a kind of cavity body filter and its low-pass filter structure, can solve the problem that in prior art and exists
Low pass part high processing costs and the technical problem of transmission conductor poor universality.
To solve the above problems, on the one hand the utility model embodiment provides a kind of LPF knot of cavity body filter
Structure, the low-pass filter structure includes main cavity, cover plate and transmission conductor；Portion is provided with multiple filtering chambers in main chamber body,
The cover plate is covered at the opening in the plurality of filtering chamber, to realize the sealing to the plurality of filtering chamber, adjacent filtering chamber
Between be provided with groove, the transmission conductor is through the groove and is plugged in the plurality of filtering chamber.
According to the preferred embodiment of the utility model one, the low-pass filter structure also includes dielectric, and the insulation is situated between
Matter is located between the transmission conductor and the plurality of filtering chamber.
According to the preferred embodiment of the utility model one, the transmission conductor is strip or tabular.
According to the preferred embodiment of the utility model one, the shape of cross section of the transmission conductor for circular, square or
Rectangle, the groove cross sectional shape between the adjacent filtering chamber is adapted with the shape of cross section of the transmission conductor.
It is that aluminium alloy or magnesium are closed according to the material of the preferred embodiment of the utility model one, main chamber body and the cover plate
Gold.
According to the surface of the preferred embodiment of the utility model one, main chamber body and the cover plate through electric conductive oxidation, electricity
Silver-plated or plating Copper treatment.
According to the preferred embodiment of the utility model one, the material of the transmission conductor is aluminium alloy, copper, stainless steel.
According to the preferred embodiment of the utility model one, the surface of the transmission conductor through electric conductive oxidation, electrosilvering or
Plating Copper treatment.
According to the preferred embodiment of the utility model one, the dielectric bag is located at the overall periphery of the transmission conductor.
To solve above-mentioned technical problem, the utility model also provides a kind of cavity body filter, and the cavity body filter includes
Low-pass filter structure any one of above-described embodiment.
The cavity body filter provided relative to prior art, the utility model and its low-pass filter structure, its each part
Simple structure, processing cost is low, and versatility is good, easy for installation；On the premise of performance is ensured, it is possible to achieve mass production and efficiently
Change.
Description of the drawings
Technical scheme in order to be illustrated more clearly that the utility model embodiment, below will be to needed for embodiment description
The accompanying drawing to be used is briefly described, it should be apparent that, drawings in the following description are only some realities of the present utility model
Example is applied, for those of ordinary skill in the art, on the premise of not paying creative work, can be with according to these accompanying drawings
Obtain other accompanying drawings.
Fig. 1 is the sectional view of low-pass filter structure in prior art；
Fig. 2 is the utility model low-pass filter structure first preferred embodiment structure sectional view；And
Fig. 3 is the utility model low-pass filter structure the second preferred embodiment structure sectional view.
Specific embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is carried out
Clearly and completely describe, it is clear that described embodiment is only a part of embodiment of the present utility model, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made
The every other embodiment for being obtained, belongs to the scope of the utility model protection.
Embodiment 1
Fig. 2 is referred to, Fig. 2 is the utility model low-pass filter structure first preferred embodiment structure sectional view.The enforcement
Low-pass filter structure in example includes but is not limited to main cavity 100, cover plate 200 and transmission conductor 300.
Specifically, multiple filtering chambers 110 are provided with inside main cavity 100, cover plate 200 is covered on multiple filtering chambers 110
At opening, to realize the sealing to multiple filtering chambers 110.Groove 111 is provided between adjacent filtering chamber 110, transmission conductor 300 is passed through
Break-through groove 111 is simultaneously plugged in multiple filtering chambers 110.
Main cavity 100, as the installation carrier of transmission conductor 300, can be made of the conventional materials such as aluminium alloy, magnesium alloy,
Surface treatment can be processed for electric conductive oxidation, electrosilvering or electro-coppering etc..
The entrance that cover plate 200 is installed as part, or the conventional material such as aluminium alloy, magnesium alloy is made, at surface
Reason can be processed for electric conductive oxidation, electrosilvering or electro-coppering etc..It can be fixed on main cavity in the way of relying on and playing screw
100, it is also possible to realize fixing by the modes such as welding, riveting and main cavity 100.It is in the present embodiment to be connected using screw 210
Connect.
The cross section of transmission conductor 300 can according to actual needs be processed as circle, square or rectangle other shapes,
Entirety can be in strip or tabular etc..The horizontal stroke of the cross sectional shape of groove 111 and transmission conductor 300 between adjacent filtering chamber 110
Cross sectional shape is adapted.It can be made up of materials such as aluminium alloy, copper, stainless steels, and surface treatment can be electric conductive oxidation, plating
Silver or electro-coppering etc. are processed.In the present embodiment, the plate-like structure of transmission conductor 300.
It is further preferred that the low-pass filter structure can also include dielectric 400, dielectric 400 can be bag
The sleeve pipe of whole transmission conductor 300, or the dielectric support of local parcel are wrapped up in, the spacing effect of fixation can be played,
Certain impact can be produced on low pass behavior according to dielectric constant.Typical material can be teflon (Teflon), Ultem (polyethers
Acid imide) and heat-shrinkable T bush etc..It is wrapped on transmission conductor 300 for local in this embodiment, specially dielectric 400
Between transmission conductor 300 and multiple filtering chambers 110.
Transmission conductor 300 forms low-impedance line with the aperture portion of the groove 111 in filtering chamber 110, with the filtering part of chamber 110
High impedance line is formed, meets the low-pass filter circuit principle on basis, and then realize low pass behavior.
Embodiment 2
Fig. 3 is referred to, Fig. 3 is the utility model low-pass filter structure and preferred embodiment structure sectional view.The enforcement
Groove 111 is narrow channel-shaped between filtering chamber 110 in example, and it is adapted with the shape of cross section of tabular transmission conductor 300.Pass
By the grade of passive dielectric 400, other insulating materials are installed in main cavity conductor department 300, and cover plate 200 leads to again
Cross screw and be fixed on main cavity 100 shielding space for realizing overall microwave transmission.So, transmission conductor 300 and main cavity 100
Narrow slot, sipes part realize low-impedance line and high impedance line respectively, meet basis low-pass filter circuit principle, Jin Ershi
Existing low pass behavior.
Relative to the low-pass filter structure that prior art, the utility model are provided, its each modular construction is simple, is processed into
This is low, and versatility is good, easy for installation；On the premise of performance is ensured, it is possible to achieve mass production and high efficiency.
In addition, the utility model also provides a kind of cavity body filter, the cavity body filter includes arbitrary in above-described embodiment
The low-pass filter structure of item description, and with regard to the architectural feature of cavity body filter other parts, those skilled in the art's
In the range of understanding, here is omitted.
Section Example of the present utility model is the foregoing is only, protection domain of the present utility model is not thereby limited,
Equivalent device or equivalent flow conversion that every utilization the utility model specification and accompanying drawing content are made, or directly or indirectly fortune
Used in other related technical fields, it is included in the same manner in scope of patent protection of the present utility model.
Claims (10)
1. a kind of low-pass filter structure of cavity body filter, it is characterised in that the low-pass filter structure includes main cavity, cover plate
And transmission conductor；Portion is provided with multiple filtering chambers in main chamber body, and the cover plate is covered on the opening in the plurality of filtering chamber
Place, to realize the sealing to the plurality of filtering chamber, is provided with groove between adjacent filtering chamber, the transmission conductor is through described logical
Groove is simultaneously plugged in the plurality of filtering chamber.
2. low-pass filter structure according to claim 1, it is characterised in that the low-pass filter structure also includes that insulation is situated between
Matter, the dielectric is located between the transmission conductor and the plurality of filtering chamber.
3. low-pass filter structure according to claim 1, it is characterised in that the transmission conductor is strip or tabular.
4. low-pass filter structure according to claim 3, it is characterised in that the shape of cross section of the transmission conductor is circle
Shape, square or rectangle, the shape of cross section of the groove cross sectional shape between the adjacent filtering chamber and the transmission conductor
It is adapted.
5. low-pass filter structure according to claim 1, it is characterised in that the material of main chamber body and the cover plate is
Aluminium alloy or magnesium alloy.
6. low-pass filter structure according to claim 5, it is characterised in that the surface Jing of main chamber body and the cover plate
Cross electric conductive oxidation, electrosilvering or plating Copper treatment.
7. low-pass filter structure according to claim 1, it is characterised in that the material of the transmission conductor be aluminium alloy,
Copper, stainless steel.
8. low-pass filter structure according to claim 1, it is characterised in that the surface of the transmission conductor is through conductive oxygen
Change, electrosilvering or plating Copper treatment.
9. low-pass filter structure according to claim 2, it is characterised in that the dielectric bag is led located at the transmission
The overall periphery of body.
10. a kind of cavity body filter, it is characterised in that the cavity body filter includes low described in any one of claim 1-9
Pass filter structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620994168.3U CN206116572U (en) | 2016-08-30 | 2016-08-30 | Cavity filter and low -pass filter structure thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620994168.3U CN206116572U (en) | 2016-08-30 | 2016-08-30 | Cavity filter and low -pass filter structure thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206116572U true CN206116572U (en) | 2017-04-19 |
Family
ID=58515413
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620994168.3U Active CN206116572U (en) | 2016-08-30 | 2016-08-30 | Cavity filter and low -pass filter structure thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206116572U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106953147A (en) * | 2017-05-03 | 2017-07-14 | 深圳市国人射频通信有限公司 | A kind of new lowpass structures for cavity body filter |
| CN107978827A (en) * | 2017-12-28 | 2018-05-01 | 广东文达镁业科技股份有限公司 | A kind of magnesium alloy filter cavity and its processing method |
-
2016
- 2016-08-30 CN CN201620994168.3U patent/CN206116572U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106953147A (en) * | 2017-05-03 | 2017-07-14 | 深圳市国人射频通信有限公司 | A kind of new lowpass structures for cavity body filter |
| CN106953147B (en) * | 2017-05-03 | 2019-11-05 | 深圳市国人射频通信有限公司 | A kind of novel lowpass structures for cavity body filter |
| CN107978827A (en) * | 2017-12-28 | 2018-05-01 | 广东文达镁业科技股份有限公司 | A kind of magnesium alloy filter cavity and its processing method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110380164B (en) | Ceramic dielectric waveguide filter | |
| CN110459840B (en) | Communication device, dielectric filter, and dielectric block | |
| CN206148589U (en) | Little volume dielectric waveguide wave filter | |
| CN206864596U (en) | A kind of transition structure of millimeter wave differential microstrip to rectangular waveguide | |
| CN106129558B (en) | Meta Materials microwave filter based on opening resonance loop structure | |
| CN206116572U (en) | Cavity filter and low -pass filter structure thereof | |
| CN206271844U (en) | A kind of microstripline plate and bandstop filter | |
| CN111816964B (en) | Millimeter wave suspension strip line composite filter | |
| CN101609915A (en) | A kind of LTCC bandpass filter with image suppression | |
| CN107302344A (en) | Dual-pushing type oscillator based on differential bandpass filter | |
| CN104752796B (en) | A kind of cavity body filter and radio frequency remote equipment | |
| CN110137641A (en) | A kind of miniature double trap ultra-wide band filters based on the type of falling π resonator | |
| CN202798692U (en) | Eight GHz fully outdoor internet protocol (IP) digital microwave unit and radio frequency unit thereof | |
| CN104466316B (en) | A kind of X-band defect ground structure half-modular substrate integral wave guide filter | |
| CN103247840A (en) | Millimeter-wave high-performance filter with micro-scale medium cavity | |
| CN209709140U (en) | A kind of 5G communication single layer dielectric waveguide filter | |
| CN202871951U (en) | Dielectric filter | |
| CN113488752B (en) | Five-notch miniature ultra-wideband filter based on C-type resonator | |
| CN113471653B (en) | Glass-based wide-stop-band microwave filter | |
| CN212935860U (en) | Thin film filter | |
| CN106785252A (en) | New resistance filter apparatus | |
| CN111370825B (en) | Balun filter based on ceramic dielectric resonator | |
| CN209691916U (en) | A kind of miniature double trap ultra-wide band filters based on the type of falling π resonator | |
| CN209981435U (en) | Microstrip band-pass filter of WLAN frequency channel | |
| CN210200922U (en) | Ceramic dielectric waveguide filter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |