CN207368186U - A kind of bandstop filter and communication equipment - Google Patents
A kind of bandstop filter and communication equipment Download PDFInfo
- Publication number
- CN207368186U CN207368186U CN201721338746.9U CN201721338746U CN207368186U CN 207368186 U CN207368186 U CN 207368186U CN 201721338746 U CN201721338746 U CN 201721338746U CN 207368186 U CN207368186 U CN 207368186U
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- Prior art keywords
- transmission line
- bandstop filter
- filtering chamber
- filtering
- lead
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Abstract
The utility model discloses a kind of bandstop filter and communication equipment.The bandstop filter includes multiple filtering chambers, cover board, transmission line, input terminal, lead-out terminal, multiple filtering chambers are by cover closure, one end of transmission line is connected with input terminal, the other end of transmission line is connected with lead-out terminal, and transmission line is through multiple filtering chambers and is fixed on filtering chamber inside cavity.This structure that transmission line is arranged to filtering chamber inside cavity, can not only simplify the structure of bandstop filter, improve production and work efficiency, and eliminate transmission line mounting groove, so that the volume of bandstop filter can also be reduced, it is cost-effective.
Description
Technical field
Wave filter technology field is the utility model is related to, more particularly to a kind of bandstop filter and communication equipment.
Background technology
In mobile communication base station system, reception signal of the generally use wave filter to reception antenna filters, with filter
Garbage signal in addition to the particular frequency range of transmitting antenna transmitting, obtains the carrying communication data in the particular frequency range
Signal, i.e. useful signal.
When antenna transmitting useful signal bandwidth it is very wide, and need filter out garbage signal smaller bandwidth when, usually
Realized using bandstop filter and the garbage signal is filtered out.Bandstop filter believes input since its resonant frequency is outer in band
Number and inter-modulated signal have decay, so compare bandpass filter, it is larger that it mutually reconciles power capacity；Due to leading to for bandstop filter
Band is mainly realized by the matching of mobile jib, so mobile jib frequency i.e. achievable debugging and optimization to product need to be only finely tuned, can
Preferably to ensure the uniformity of properties of product.
But the inventor of the utility model has found in long-term research and development, in currently available technology, bandstop filter leads to
1/4 wavelength transmission line is realized frequently with the bending tap piece 101 being arranged at outside resonator, as shown in Figure 1, bending tap piece
101 is not only complicated and generally use is fixed mounting grooves 102 are fixed, its volume is larger, causes entirely to filter cavity volume
It is larger.
Utility model content
The utility model is mainly solving the technical problems that provide a kind of bandstop filter and communication equipment, to improve tradition
Bandstop filter it is complicated, volume is larger the problem of, so as to improve the production and work of bandstop filter and communication equipment
It is efficiency, cost-effective.
In order to solve the above technical problems, the technical solution that the utility model uses is：A kind of bandstop filter is provided.
The bandstop filter includes multiple filtering chambers, cover board, transmission line, input terminal, lead-out terminal, and the multiple filtering chamber is by institute
Cover closure is stated, one end of the transmission line is connected with the input terminal, the other end of the transmission line and the output terminal
Son connection, the transmission line is through the multiple filtering chamber and is fixed on the filtering chamber inside cavity.
Wherein, the two side of each filtering chamber is equipped with first through hole close to one end of the cover board；The transmission
Line is fixedly installed on the cover board towards the surface of the side of the filtering chamber, to form electromagnetic coupled with the filtering chamber；Institute
State transmission line and extend to another filtering intracavitary adjacent thereto through the first through hole from a filtering intracavitary, or prolong
Extend outside the filtering chamber, to be connected with the input or lead-out terminal.
Wherein, the transmission line includes a main transmission line and multiple secondary transmission lines；The multiple pair transmission line is distributed respectively
In multiple corresponding cover boards of chamber that filter towards the surface of the filtering chamber side；And the multiple secondary transmission line and institute
Multiple filtering chambers of stating correspond setting.
Wherein, each filtering intracavitary is provided with a resonator；The main transmission line passes through the first through hole from one
The filtering intracavitary extends to another filtering intracavitary adjacent thereto；Described pair transmission line one end connects the main transmission
Line, the other end extend towards the resonator direction, to adjust the coupling delays of the filtering chamber.
Wherein, the bandstop filter further comprises multiple fixing pieces；The fixing piece is through the cover board by described in
Transmission line is fixed on the cover board towards the surface of the side of the filtering chamber.
Wherein, the fixing piece is plastic material.
Wherein, the bandstop filter further comprises the first deck and the second deck；First deck is arranged at institute
Transmission line and the input, lead-out terminal junction are stated, the transmission line and the input, lead-out terminal are fixed；It is described
Second deck is arranged at the input, lead-out terminal and the first through hole junction, and the input, lead-out terminal are fixed
In the side wall of the filtering chamber.
Wherein, first deck and second deck are plastic material.
Wherein, the transmission line between the two neighboring filtering chamber is the microstrip line of 1/4 wavelength.
In order to solve the above technical problems, another technical solution that the utility model uses is：A kind of communication equipment is provided.
The communication equipment includes above-mentioned bandstop filter and transceiver；The bandstop filter is used for the signal to the transceiver
Transmitting-receiving makes choice.
The beneficial effect of the utility model embodiment is：The prior art is different from, the utility model embodiment includes multiple
Chamber, cover board, transmission line, input terminal, lead-out terminal are filtered, multiple filtering chambers are by cover closure, one end of transmission line and input
Terminal connects, and the other end of transmission line is connected with lead-out terminal, and transmission line is through multiple filtering chambers and is fixed on filtering chamber cavity
It is internal.This structure that transmission line is arranged to filtering chamber inside cavity, can not only simplify the structure of bandstop filter, improve
Production and work efficiency, and transmission line mounting groove is eliminated, so that the volume of bandstop filter can also be reduced, it is cost-effective.
Brief description of the drawings
Fig. 1 is the structure chart of one embodiment of prior art bandstop filter；
Fig. 2 is the structure diagram of one embodiment of the utility model bandstop filter；
Fig. 3 is the structure diagram of Fig. 2 embodiment part-structures；
Fig. 4 is the structure diagram of one embodiment of the utility model communication equipment.
Embodiment
Also referring to Fig. 2 and Fig. 3, wherein, Fig. 2 is the structural representation of one embodiment of the utility model bandstop filter
Figure；Fig. 3 is the structure diagram of Fig. 2 embodiment part-structures.The multiple filtering chambers 201 of the present embodiment, cover board 202, transmission line
203rd, input terminal 204 and lead-out terminal 205, multiple filtering chambers 201 are closed by cover board 202, one end of transmission line 203 and input
Terminal 204 connects, and the other end of transmission line 203 is connected with lead-out terminal 205, and transmission line 203 is through multiple filtering chambers 201 and consolidates
Due to filtering 201 inside cavity of chamber.
The setting of the input terminal 204 and lead-out terminal 205 of the present embodiment and the signal transmission direction of transmission line 203 have
Close, can be according to 205 position of signal transmission direction intermodulation input terminal 204 and lead-out terminal.
It should be noted that the embodiment of the present application is multiple including two and more than two situations.
In an application scenarios, cover board 202 closes all filtering chambers 201.And in another application scenarios, cover board
202 are divided into polylith cover board 202, close off multiple filtering chambers 201.Certainly, pair of multiple cover boards 202 and multiple filtering chambers 201
Should be related to can be, but not limited to, it is one-to-one or one-to-many.
The prior art is different from, transmission line 203 is arranged in filtering 201 cavity of chamber by the present embodiment, can save transmission
The mounting groove of line 203, can not only simplify the structure of bandstop filter, improve production and work efficiency, and can also reduce band
The volume of wave filter is hindered, it is cost-effective.
Specifically, the two side of each filtering chamber 201 of the present embodiment is equipped with one first close to one end of cover board 202 and leads to
Hole 301；A resonator 207 with the second through hole 206 is set respectively in each filtering chamber 201；Each resonator 207 is equipped with
One frequency modulation screw rod 208, and frequency modulation screw rod 208 is extended in the second through hole 206 of resonator 207 through cover board 202, to adjust
The resonant frequency of resonator 207；Transmission line 203 and a pair of input terminals 204, lead-out terminal 205；Transmission line 203 is fixedly installed
Surface in cover board 202 towards the side of filtering chamber 201, to form electromagnetic coupled with filtering chamber 201；Transmission line 203 passes through
One through hole 301 is extended in another filtering chamber 201 adjacent thereto out of a filtering chamber 201, or is extended to outside filtering chamber 201,
To be connected with input terminal 204, lead-out terminal 205.
The transmission line 203 that electromagnetic coupled is formed with filtering chamber 201 of the present embodiment is arranged at cover board 202 towards filtering chamber
The surface of 201 side, it is possible to increase the stability of transmission line 203.
Alternatively, the transmission line 202 of the present embodiment includes a main transmission line 209 and multiple secondary transmission lines 210；Multiple secondary biographies
Defeated line 210 is distributed in the corresponding cover board 202 of multiple filtering chambers 201 towards the surface of 201 side of filtering chamber respectively；And multiple secondary biographies
Defeated line 210 is corresponded with multiple filtering chambers 201 and set；Main transmission line 209 is through first through hole 301 out of a filtering chamber 201
Extend in another filtering chamber 201 adjacent thereto；Secondary 210 one end of transmission line connects main transmission line 209, and the other end is towards resonator
207 directions extend, to adjust the coupling delays of filtering chamber 201.
Alternatively, the transmission line 203 of the present embodiment can use the microstrip line with 1/4 wavelength to realize, i.e. 1/4 wavelength transmission
Line 203.Microstrip line is the microwave transmission line being made of the plain conductor band propped up on dielectric substrate；It is adapted to making microwave to integrate
The planar structure transmission line of circuit；Its compared with metal waveguide, have it is small, light-weight, service band is wide, reliability is high and
Manufacture the advantages such as cost is low.The dielectric substrate usually selects the material that dielectric constant is high, lossy microwave is low；The conductor, which should have, leads
The features such as electric rate is high, stability is good and the adhesiveness of substrate is strong.Transmission line can be changed by varying the size of microstrip line
203 matching impedance, to be used as 1/4 wavelength transmission line 203.Certainly in other embodiments, such as coaxial line, strip line can be used
And suspended substrate stripline etc. realizes 1/4 wavelength transmission line 203.
The prior art is different from, the present embodiment uses tunable resonator and micro-strip wire connection structure, can not only simplify band
Hinder the structure of wave filter, reduce volume, improve its machining accuracy, and Insertion Loss can be reduced, increase the receiving sensitivity of signal.
Alternatively, the filtering chamber 201 of the present embodiment and/or resonator 207 are metal material.Certainly in other embodiments
In, the material substitution such as the ceramics or quartz metal can be used.
It should be noted that the utility model embodiment can use metal filtering chamber and microstrip line construction, by increasing capacitance it is possible to increase
Filtering bandwidth.
Alternatively, the present embodiment further includes adjusting screw rod (not shown)；And each filtering chamber 201 is equipped with an adjusting spiral shell
Bar；Each adjusting screw rod is extended in filtering chamber 201 after passing through cover board 202, to adjust the coupling delays of filtering chamber 201.
In the present embodiment, the shape of each secondary transmission line 210 and size are set according to the performance parameter of each filtering chamber 201
Meter, to determine the coupling delays of each filtering chamber；And each adjusting screw rod is used in the debugging process of bandstop filter, fine setting
The coupling delays of each filtering chamber 201.
In an application scenarios, the coupling delays between two adjacent resonators 207 are adjusted by adjusting screw rod, at another
In application scenarios, the coupling delays between non-adjacent resonators 207 are adjusted by adjusting screw rod.Reception antenna received signal is successively
Alternately across transmission line 203 and filtering chamber 201, in multiple resonators 207 of bandstop filter and the collective effect of transmission line 203
Frequency response curve needed for lower formation bandstop filter.
Alternatively, the filtering chamber 201 of the present embodiment, resonator 207 and frequency modulation screw rod 208 are set coaxially to each other.
Certainly, the resonator 207 of the present embodiment bandstop filter further comprises resonant column (not shown) and resonance plate (figure
Do not show) to realize resonant frequency, the resonant frequency can be finely adjusted by frequency modulation screw rod 208.
It is above-mentioned to be coaxially disposed with high q-factor (Q is quality factor), high loss characteristic, high electromagnetic shielding, small size and easy reality
The characteristics of existing.Certainly, in other embodiments, can also be coaxially disposed using non-coaxial setting to substitute this.
Alternatively, the present embodiment further comprises multiple fixing pieces 211；Fixing piece 211 passes through solid cover board 202 by transmission line
203 are fixed on cover board 202 towards the surface of the side of filtering chamber 201.Multiple fixing pieces 211 of this implementation and multiple filtering chambers
201 set-up mode can be, but not limited to, one-to-one or multipair first-class.
Alternatively, the fixing piece 211 of the present embodiment is plastic material.In other embodiments, fixing piece 211 can be it
It has insulation, the material of low thermal expansion characteristic.
Alternatively, this implementation still further comprises the first deck 212 and the second deck 213；Wherein, the first deck 212 is set
Transmission line 203 and input terminal 204, the junction of lead-out terminal 205 are placed in, by transmission line 203 and input terminal 204, defeated
Go out terminal 205 to fix, to increase the stability of transmission line 203；Second deck 213 is arranged at input terminal 204, lead-out terminal
205 with 301 junction of first through hole, by input terminal 204, lead-out terminal 205 be fixed on filtering chamber 201 side wall, with increase
Add input terminal 204, the stability of lead-out terminal 205.
First deck 212 and the second deck 213 of the present embodiment be plastic material or it is other have insulation, low thermal expansion
The material of characteristic.
Refering to Fig. 4, Fig. 4 is the structure diagram of one embodiment of the utility model communication equipment.The present embodiment includes above-mentioned
Embodiment bandstop filter 401 and transceiver 402, bandstop filter 401 are used to select the signal transmitting and receiving of transceiver 402
Select.
The concrete structure and operation principle of bandstop filter have carried out detailed narration in the above-described embodiments, here
Do not repeat.
The present embodiment communication equipment can be one in either simplex device, duplexer, splitter, combiner and tower amplifier
Kind.Specifically, which can also be applied to radar system, and the utility model is not especially limited.
The prior art is different from, transmission line is arranged in filtering chamber cavity by the bandstop filter of the present embodiment, can not only
Enough simplify its structure, improve production and work efficiency, and then improve production and the work efficiency of the communication equipment, and can also
Its volume and cost are reduced, and then reduces the volume and cost of the communication equipment.
The foregoing is merely the embodiment of the utility model, it does not limit the scope of the patent of the present invention, all
It is equivalent structure or equivalent flow shift made based on the specification and figures of the utility model, directly or indirectly uses
In other related technical areas, it is equally included in the patent within the scope of the utility model.
Claims (10)
1. a kind of bandstop filter, including multiple filtering chambers, cover board, transmission line, input terminal, lead-out terminal, the multiple filter
Ripple chamber is by the cover closure, it is characterised in that：
One end of the transmission line is connected with the input terminal, and the other end of the transmission line is connected with the lead-out terminal,
The transmission line is through the multiple filtering chamber and is fixed on the filtering chamber inside cavity.
2. bandstop filter according to claim 1, it is characterised in that
The two side of each filtering chamber is equipped with first through hole close to one end of the cover board；The transmission line fixed setting
Surface in the cover board towards the side of the filtering chamber, to form electromagnetic coupled with the filtering chamber；
The transmission line extends to another filtering chamber adjacent thereto through the first through hole from a filtering intracavitary
It is interior, or extend to outside the filtering chamber, to be connected with the input or lead-out terminal.
3. bandstop filter according to claim 2, it is characterised in that
The transmission line includes a main transmission line and multiple secondary transmission lines；The multiple pair transmission line is distributed in multiple described respectively
The corresponding cover board of chamber is filtered towards the surface of the filtering chamber side；And the multiple secondary transmission line with institute is multiple states filtering
Chamber, which corresponds, to be set.
4. bandstop filter according to claim 3, it is characterised in that
Each filtering intracavitary is provided with a resonator；The main transmission line passes through the first through hole from a filtering chamber
Inside extend to another filtering intracavitary adjacent thereto；Described pair transmission line one end connects the main transmission line, other end court
The resonator direction extension, to adjust the coupling delays of the filtering chamber.
5. bandstop filter according to claim 1, it is characterised in that the bandstop filter further comprises multiple solid
Determine part；The transmission line is fixed on the cover board towards the table of the side of the filtering chamber by the fixing piece through the cover board
Face.
6. bandstop filter according to claim 5, it is characterised in that
The fixing piece is plastic material.
7. bandstop filter according to claim 2, it is characterised in that the bandstop filter further comprises the first card
Seat and the second deck；
First deck be arranged at the transmission line with it is described input, the junction of lead-out terminal, by the transmission line with
The input, lead-out terminal are fixed；
Second deck is arranged at the input, the junction of lead-out terminal and the first through hole, by the input, defeated
Go out the side wall that terminal is fixed on the filtering chamber.
8. bandstop filter according to claim 7, it is characterised in that
First deck and second deck are plastic material.
9. bandstop filter according to claim 1, it is characterised in that
Transmission line between the two neighboring filtering chamber is the microstrip line of 1/4 wavelength.
A kind of 10. communication equipment, it is characterised in that including：
Claim 1 to the 9 any bandstop filter and receiver；The bandstop filter is used for the receiver
Signal transmitting and receiving makes choice.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721338746.9U CN207368186U (en) | 2017-10-17 | 2017-10-17 | A kind of bandstop filter and communication equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721338746.9U CN207368186U (en) | 2017-10-17 | 2017-10-17 | A kind of bandstop filter and communication equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207368186U true CN207368186U (en) | 2018-05-15 |
Family
ID=62419490
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721338746.9U Active CN207368186U (en) | 2017-10-17 | 2017-10-17 | A kind of bandstop filter and communication equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207368186U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109713413A (en) * | 2019-02-25 | 2019-05-03 | 江苏贝孚德通讯科技股份有限公司 | A kind of coupled structure of band-stop response communication headend equipment component |
| CN113054333A (en) * | 2019-12-27 | 2021-06-29 | 深圳市大富科技股份有限公司 | Filter and communication equipment |
| CN113725575A (en) * | 2020-05-20 | 2021-11-30 | 大富科技(安徽)股份有限公司 | Communication equipment and filter |
-
2017
- 2017-10-17 CN CN201721338746.9U patent/CN207368186U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109713413A (en) * | 2019-02-25 | 2019-05-03 | 江苏贝孚德通讯科技股份有限公司 | A kind of coupled structure of band-stop response communication headend equipment component |
| CN113054333A (en) * | 2019-12-27 | 2021-06-29 | 深圳市大富科技股份有限公司 | Filter and communication equipment |
| CN113725575A (en) * | 2020-05-20 | 2021-11-30 | 大富科技(安徽)股份有限公司 | Communication equipment and filter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 233000 building 4, national financial incubation Industrial Park, 17 Yannan Road, high tech Zone, Bengbu City, Anhui Province Patentee after: Dafu Technology (Anhui) Co., Ltd Address before: 518108, Guangdong, Shenzhen province Baoan District manhole Street oyster road manhole Industrial Company Third Industrial Zone A1, A2, A3 101 and 2 layers, A4 Patentee before: SHENZHEN TATFOOK TECHNOLOGY Co.,Ltd. |
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| CP03 | Change of name, title or address |