CN207624877U - A kind of bandstop filter and communication equipment - Google Patents
A kind of bandstop filter and communication equipment Download PDFInfo
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- CN207624877U CN207624877U CN201721668491.2U CN201721668491U CN207624877U CN 207624877 U CN207624877 U CN 207624877U CN 201721668491 U CN201721668491 U CN 201721668491U CN 207624877 U CN207624877 U CN 207624877U
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Abstract
The utility model discloses a kind of bandstop filter and communication equipments.The bandstop filter includes：Multiple filtering chambers with the first opening and the second opening；And the resonator with through-hole is respectively set in each filtering intracavitary；Logical of transmission line being arranged above filtering chamber crosses the first opening and carries out electromagnetic coupling with filtering chamber；And the coupling delays of resonator are adjusted by adjusting the length in the adjusting screw rod insertion resonator through-holes for extending vertically through transmission line, adjust the resonant frequency of resonator by adjusting length of the frequency modulation screw rod through the second opening insertion resonator through-holes.The integral structure of this frequency modulation screw rod, adjusting screw rod and resonator can not only simplify the structure of bandstop filter, improve production and working efficiency, and can also reduce the volume of bandstop filter, cost-effective.
Description
Technical field
The utility model is related to wave filter technology fields, more particularly to a kind of bandstop filter and communication equipment.
Background technology
In mobile communication base station system, generally use filter is filtered the reception signal of reception antenna, 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 the bandwidth of the useful signal of antenna transmitting is very wide, and needs the smaller bandwidth of the garbage signal filtered out, usually
The garbage signal is filtered out using bandstop filter realization.Bandstop filter believes input since its resonant frequency is outer in band
Number and inter-modulated signal have decaying, so compare bandpass filter, the power capacity that mutually reconciles is larger；Due to leading to for bandstop filter
Band mainly realized by the matching of mobile jib, so need to only finely tune mobile jib frequency can be realized debugging and optimization to product, it can
Preferably to ensure the consistency of properties of product.
But the inventor of the utility model has found in long-term research and development, and in currently available technology, bandstop filter is logical
1/4 wavelength transmission line is realized frequently with the bending tap piece being set to outside resonator, but bending tap chip architecture is complicated, volume
It is larger, cause entirely to filter cavity volume 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
The larger problem of the complicated of bandstop filter, volume, 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.
Bandstop filter includes transmission line；Multiple filtering chambers, and be respectively equipped in opposite two cavity walls of each filtering chamber the first opening and
Second opening；The resonator with through-hole is respectively set in each filtering intracavitary, and through-hole is vertical with filtering two cavity walls of chamber；Transmission
Line is set to the side that filtering chamber is equipped with the first opening, and vertical with through-hole direction, and is formed by the first opening and filtering chamber
Electromagnetic coupling；Multiple adjusting screw rods, multiple adjusting screw rods are arranged in a one-to-one correspondence respectively with multiple filtering chambers, and each adjusting screw rod
One end extended in through-hole by the first opening, and the other end extends vertically through transmission line, is extended in through-hole by adjusting
The length of adjusting screw rod adjusts the coupling delays of resonator；Multiple frequency modulation screw rods, multiple frequency modulation screw rods and multiple filtering chambers point
It is not arranged in a one-to-one correspondence, and one end of each frequency modulation screw rod is extended to by the second opening in the through-hole of resonator, and adjusting is passed through
The length of the frequency modulation screw rod extended in through-hole adjusts the resonant frequency of resonator.
In order to solve the above technical problems, another technical solution that the utility model uses is：A kind of communication equipment is provided.
Communication equipment includes above-mentioned bandstop filter and transceiver；Bandstop filter is for selecting the signal transmitting and receiving of transceiver
It selects.
The advantageous effect of the utility model embodiment is：It is different from the prior art, the utility model embodiment includes multiple
Filtering chamber with the first opening and the second opening；And it is equipped with the resonator of through-hole in each filtering intracavitary；Setting exists
It filters the transmission line above chamber and electromagnetic coupling is carried out by the first opening and filtering chamber；And extend vertically through transmission line by adjusting
The length that adjusting screw rod is inserted into resonator through-holes adjusts the coupling delays of resonator, is opened through second by adjusting frequency modulation screw rod
Mouth is inserted into the length of resonator through-holes to adjust the resonant frequency of resonator.This frequency modulation screw rod, adjusting screw rod and resonator
Integral structure can not only simplify the structure of bandstop filter, improve production and working efficiency, and can also reduce band resistance filter
The volume of wave device, it is cost-effective.
Description of the drawings
Fig. 1 is the schematic top plan view of one embodiment of the utility model bandstop filter；
Fig. 2 is the schematic cross-sectional view of Fig. 1 embodiment part-structures；
Fig. 3 is the schematic equivalent circuit of Fig. 1 embodiments；
Fig. 4 is the schematic equivalent circuit of another embodiment of the utility model bandstop filter；
Fig. 5 is the schematic equivalent circuit of the another embodiment of the utility model bandstop filter；
Fig. 6 is the structural schematic diagram of Fig. 2 microstrip lines and its peripheral structure；
Fig. 7 is the structural schematic diagram of one embodiment of the utility model communication equipment.
Specific implementation mode
Also referring to Fig. 1 and Fig. 2, wherein Fig. 1 is the vertical view signal of one embodiment of the utility model bandstop filter
Figure；Fig. 2 is the schematic cross-sectional view of Fig. 1 embodiment part-structures.The present embodiment includes transmission line 101；Multiple filtering chambers 102, and
It is respectively equipped with the first opening 103 and second opening 104 in two opposite cavity walls of each filtering chamber 102；Divide in each filtering chamber 102
She Zhi not be with the resonator 106 of through-hole 105, and through-hole 105 is vertical with filtering two cavity wall of chamber 102；Transmission line 101 is arranged
It is equipped with the side of the first opening 103 in filtering chamber 102, and vertical with 105 direction of through-hole, and passes through the first opening 103 and filtering
Chamber 102 forms electromagnetic coupling；Multiple adjusting screw rods 107, multiple adjusting screw rods 107 correspond respectively with multiple filtering chambers 102
Setting, and one end of each adjusting screw rod 107 is extended to by the first opening 103 in through-hole 105, and the other end extends vertically through biography
Defeated line 101 adjusts the coupling delays of resonator 106 by adjusting the length of the adjusting screw rod 107 extended in through-hole 105；
Multiple frequency modulation screw rods 108, multiple frequency modulation screw rods 108 are arranged in a one-to-one correspondence respectively with multiple filtering chambers 102, and each frequency modulation screw rod
108 one end is extended to by the second opening 104 in the through-hole 105 of resonator 106, is extended in through-hole 105 by adjusting
The length of frequency modulation screw rod 108 adjusts the resonant frequency of resonator 106.
In the present embodiment, the resonant frequency with its integrated resonator 106 is adjusted by frequency modulation screw rod 108.One
In a application scenarios, the coupling delays between two adjacent resonators 106 are adjusted by adjusting screw rod 107, in another application scenarios
In, the coupling delays between non-adjacent resonators 106 are adjusted by adjusting screw rod 107.Reception antenna received signal replaces successively
By transmission line 101 and filtering chamber 102, the shape under multiple resonators 106 of bandstop filter and the collective effect of transmission line 101
At the frequency response curve needed for bandstop filter.
It should be noted that the multiple of the embodiment of the present application include two and more than two situations.
It is different from the prior art, the present embodiment is equipped with the resonator 106 of through-hole 105 in each filtering chamber 102；
By adjusting, to extend vertically through the length that the adjusting screw rod 107 of transmission line 101 extends in 106 through-hole 105 of resonator humorous to adjust
Shake the coupling delays of device 106, and the length of 106 through-hole 105 of resonator is extended to by adjusting frequency modulation screw rod 108 through the second opening 104
It spends to adjust the resonant frequency of resonator 106.The integration knot of this frequency modulation screw rod 108, adjusting screw rod 107 and resonator 106
Structure can not only simplify the structure of bandstop filter, improve production and working efficiency, and can also reduce the body of bandstop filter
Product, it is cost-effective.
Optionally, the filtering chamber 102 of the present embodiment, resonator 106 and adjusting screw rod 107 are arranged coaxially to each other.
Optionally, the filtering chamber 102 of the present embodiment, resonator 106 and frequency modulation screw rod 108 are arranged coaxially to each other.
Above-mentioned coaxial arrangement has high q-factor (Q is quality factor), high loss characteristic, high electromagnetic shielding, small size and easily real
Existing feature.Certainly, in other embodiments, can also the coaxial arrangement be substituted using non-coaxial setting.
It should be noted that can be according to the dimensional conditions of the through-hole 105 of resonator 106, by adjusting screw rod 107 and frequency modulation spiral shell
Coaxial arrangement is kept between bar 108 and resonator 106.
Optionally, the first opening 103 is coaxially disposed with adjusting screw rod 107, to reinforce between filtering chamber 102 and transmission line 101
Electromagnetic coupling.
Optionally, the filtering chamber 102 of the present embodiment and/or resonator 106 are metal material.Certainly in other embodiments
In, ceramics or the material substitutions such as quartz metals may be used.
Optionally, multiple filtering chambers 102 of the present embodiment are distributed using concatenated mode.Specifically, it is refering to Fig. 3, Fig. 3
The schematic equivalent circuit of Fig. 1 embodiments.The resistance 301 of the present embodiment is the equivalent of the microstrip line (transmission line 101) of 1/4 wavelength
Resistance, resistance value can be changed by changing the size of microstrip line；Circuit 302 is filtering chamber 102, resonator 106, frequency modulation spiral shell
Equivalent circuit when bar 108 and adjusting screw rod 107 work, for generating resonant frequency and coupling relevant parameter.It can be with from Fig. 3
Find out, is series relationship between the resonant tank 303 being each made of resistance 301 and circuit 302.Certainly, in another embodiment
In parallel way (refering to Fig. 4) can also be used to be distributed multiple filtering chambers, figure 4, it is seen that each resonant tank 401 it
Between be parallel relationship；In another embodiment can also by the way of sections in series, part in parallel (refering to Fig. 5) be distributed it is multiple
Chamber is filtered, from figure 5 it can be seen that be parallel relationship between resonant tank 501 and 502, and resonant tank 501,502 and resonance
It is series relationship between circuit 503.It can be determined according to the complexity of the structure of bandstop filter, volume and shape multiple
Filter the distribution mode of chamber.
Optionally, it is adjacent to can be understood as corresponding two for the transmission line between filtering chamber 102 adjacent in the present embodiment
Transmission line 101 between adjusting screw rod 107, and the microstrip line with 1/4 wavelength can be used and reality in the transmission line 101 of the present embodiment
It is existing, i.e. 1/4 wavelength transmission line.Microstrip line is the microwave transmission line being made of the plain conductor band propped up on dielectric substrate；It is suitable
Close the planar structure transmission line for making microwave integrated circuit；Its compared with metal waveguide, have it is small, light-weight, use frequency
The high advantages such as low with manufacturing cost of bandwidth, reliability.The dielectric substrate usually selects the material that dielectric constant is high, lossy microwave is low
Material；The conductor should have the characteristics that conductivity is high, stability is good, strong with the adhesiveness of substrate.
The present embodiment can change the matching impedance of transmission line 101 by changing the size of microstrip line, using as 1/4 wave
Long transmission line 101.Certainly in other embodiments, such as coaxial line, strip line can be used and suspended substrate stripline realizes 1/4 wavelength transmission
Line 101.
It is different from the prior art, the present embodiment uses tunable resonator and micro-strip wire connection structure, can not only simplify band
It hinders the structure of filter, reduce volume, improve its machining accuracy, and Insertion Loss can be reduced, increase the receiving sensitivity of signal.
It should be noted that metal filtering chamber and microstrip line construction may be used in the utility model embodiment, can increase
Filtering bandwidth.
It is the structural schematic diagram of microstrip line and its peripheral structure in Fig. 2 embodiments refering to Fig. 6, Fig. 6.The present embodiment further includes
Substrate 602 equipped with multiple thirds opening 601；Microstrip line 603 is layed on substrate 602, and through multiple thirds opening 601 with
Multiple filtering chambers form electromagnetic coupling；One end of adjusting screw rod 604 is extended to by third opening 601 in the through-hole of filter.
Optionally, the present embodiment further includes being equipped with multiple four media for being open and (not marking, overlapped with third opening 601)
Layer 605；Dielectric layer 605 covers microstrip line 603 back to the side of substrate 602, to reduce the corrosion to microstrip line 603；Adjust spiral shell
The other end of bar 604 extends vertically through microstrip line 603, and is extended to except dielectric layer 605 by the 4th opening (figure is not marked), is convenient for
Operation of the user to adjusting screw rod 604.
Certainly, the utility model embodiment further includes that such as input at connection transmission line both ends, output port constitutes band resistance
The necessary composed structure of filter.The utility model embodiment can also include the shell of protection above-described embodiment bandstop filter
Etc. structures.
It is the structural schematic diagram of one embodiment of the utility model communication equipment refering to Fig. 7, Fig. 7.The present embodiment includes above-mentioned
Embodiment bandstop filter 701 and transceiver 702, bandstop filter 701 is for selecting the signal transmitting and receiving of transceiver 702
It selects.
The concrete structure and operation principle of bandstop filter have carried out detailed narration in the above-described embodiments, here
It does 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.
Be different from the prior art, the bandstop filter 701 of the present embodiment have frequency modulation screw rod, adjusting screw rod and resonator into
Row integral structure can not only simplify its structure, improve production and working efficiency, and then improve the production of the communication equipment
And working efficiency, and its volume and cost can also be reduced, and then reduce the volume and cost of the communication equipment.
The foregoing is merely the embodiments of the utility model, and 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, which is characterized in that including：
Transmission line；
Multiple filtering chambers, and each described filter is respectively equipped with the first opening and the second opening in two opposite cavity walls of chamber；Each
The resonator with through-hole is respectively set in the filtering intracavitary, and the through-hole is vertical with filtering two cavity wall of chamber；
The transmission line is set to the side that the filtering chamber is equipped with first opening, and vertical with the through-hole direction, and passes through
First opening forms electromagnetic coupling with the filtering chamber；
Multiple adjusting screw rods, the multiple adjusting screw rod are arranged in a one-to-one correspondence respectively with the multiple filtering chamber, and each described
One end of adjusting screw rod is extended to by first opening in the through-hole, and the other end extends vertically through the transmission line, leads to
The length of the adjusting screw rod extended in the through-hole is overregulated to adjust the coupling delays of the resonator；
Multiple frequency modulation screw rods, the multiple frequency modulation screw rod are arranged in a one-to-one correspondence respectively with the multiple filtering chamber, and each described
One end of frequency modulation screw rod is extended to by second opening in the through-hole of the resonator, is extended to by adjusting described
The length of the frequency modulation screw rod in through-hole adjusts the resonant frequency of the resonator.
2. bandstop filter according to claim 1, which is characterized in that
The transmission line between the two neighboring filtering chamber is the microstrip line of 1/4 wavelength.
3. bandstop filter according to claim 1, which is characterized in that
The filtering chamber, the resonator and the adjusting screw rod are arranged coaxially to each other.
4. bandstop filter according to claim 1, which is characterized in that
First opening is coaxially disposed with the adjusting screw rod.
5. bandstop filter according to claim 1, which is characterized in that
The filtering chamber, the resonator and the frequency modulation screw rod are arranged coaxially to each other.
6. bandstop filter according to claim 1, which is characterized in that
The filtering chamber and/or the resonator are metal material.
7. bandstop filter according to claim 1, which is characterized in that
The multiple filtering chamber is distributed using parallel way and/or series system.
8. bandstop filter according to claim 2, which is characterized in that
It further include the substrate for being equipped with multiple thirds opening；The microstrip line is layed on the substrate, and through the multiple the
Three openings form electromagnetic coupling with the multiple filtering chamber；
Described one end of the adjusting screw rod is extended to by third opening in the through-hole.
9. bandstop filter according to claim 8, which is characterized in that
It further include the dielectric layer for being equipped with multiple 4th openings；The dielectric layer covers the microstrip line back to the one of the substrate
Side；
The other end for extending vertically through the microstrip line of the adjusting screw rod is extended to by the 4th opening and is given an account of
Except matter layer.
10. a kind of communication equipment, which is characterized in that including：
Claim 1 to the 9 any bandstop filter and transceiver；The bandstop filter is used for the transceiver
Signal transmitting and receiving is selected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721668491.2U CN207624877U (en) | 2017-12-04 | 2017-12-04 | A kind of bandstop filter and communication equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721668491.2U CN207624877U (en) | 2017-12-04 | 2017-12-04 | A kind of bandstop filter and communication equipment |
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| Publication Number | Publication Date |
|---|---|
| CN207624877U true CN207624877U (en) | 2018-07-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721668491.2U Active CN207624877U (en) | 2017-12-04 | 2017-12-04 | A kind of bandstop filter and communication equipment |
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| CN (1) | CN207624877U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020132915A1 (en) * | 2018-12-26 | 2020-07-02 | 华为技术有限公司 | Dielectric duplexer |
| CN113497318A (en) * | 2020-04-08 | 2021-10-12 | 深圳市大富科技股份有限公司 | Band elimination filter and communication equipment |
| CN113992176A (en) * | 2020-07-09 | 2022-01-28 | 大富科技(安徽)股份有限公司 | Filter and communication device |
-
2017
- 2017-12-04 CN CN201721668491.2U patent/CN207624877U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020132915A1 (en) * | 2018-12-26 | 2020-07-02 | 华为技术有限公司 | Dielectric duplexer |
| US11978940B2 (en) | 2018-12-26 | 2024-05-07 | Huawei Technologies Co., Ltd. | Dielectric duplexer |
| CN113497318A (en) * | 2020-04-08 | 2021-10-12 | 深圳市大富科技股份有限公司 | Band elimination filter and communication equipment |
| CN113992176A (en) * | 2020-07-09 | 2022-01-28 | 大富科技(安徽)股份有限公司 | Filter and communication device |
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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: 518104, 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. |