CN105762449A - Filter and filtering control method - Google Patents
Filter and filtering control method Download PDFInfo
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- CN105762449A CN105762449A CN201610298784.XA CN201610298784A CN105762449A CN 105762449 A CN105762449 A CN 105762449A CN 201610298784 A CN201610298784 A CN 201610298784A CN 105762449 A CN105762449 A CN 105762449A
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- wave filter
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P1/00—Auxiliary devices
- H01P1/20—Frequency-selective devices, e.g. filters
- H01P1/2002—Dielectric waveguide filters
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Abstract
The invention discloses a filter and a filtering control method.The filter comprises a dielectric plate, a metal microstrip patch formed on the dielectric plate and metal ground plates formed on the portions, on the two sides of the metal microstrip patch, of the dielectric plate; the metal microstrip patch is directly coupled with the metal ground plates on the two sides of the metal microstrip patch, the metal ground plates on the two sides of the metal microstrip patch each enables a defected ground structure to be embedded into the dielectric plate, each defected ground structure is a helical structure, the single trapped wave characteristic is achieved, and the trapped wave center frequency of the filter is adjusted by adjusting the length of the helical structures.According to the filter and the filtering control method, two helical defected ground structures are embedded into the metal ground plates of the dielectric plate, the trapped wave center frequency is adjusted by adjusting the length of the helical structures, adjusting to the trapped wave center frequency of the filter is achieved, and meanwhile interference of other signals is avoided.
Description
Technical field
The present invention relates to filtering field, particularly relate to a kind of wave filter and filtering control method.
Background technology
Along with developing rapidly of communication technology, people are more and more higher to the requirement of information transmission system, under this background, super-broadband tech with its simple in construction, cost is low, power consumption is little, data transmission bauds is fast and safety advantages of higher becomes the focus of the current communications field.
The frequency band occupied due to ultra-wideband communications is wider, between 3.1GHz to 10.6GHz, the communication of some routines has been there is in this frequency range, such as: for C-band and the X-band of satellite communication, WLAN and broadband intercommunication microwave access, this problem of co-channel interference being accomplished by solving ultra-wideband communications.
In order to solve problem of co-channel interference, generally adopt the ultra-wide band filter with trap, by multiple wave filter cascades, the problem namely solving co-channel interference.But, multiple wave filter cascades be will result in the problem not easily converting trap mid frequency.
Summary of the invention
In view of this, the present invention provides a kind of wave filter and filtering control method, to solve multiple wave filter cascades in prior art to solve the problem of co-channel interference, and the problem but causing not easily conversion trap mid frequency, its concrete scheme is as follows:
A kind of wave filter, including dielectric-slab, be formed at the metal micro-strip paster on described dielectric-slab and be formed on described dielectric-slab, the metal ground plate of metal micro-strip paster both sides,
The metal ground plate of described metal micro-strip paster and described both sides carries out direct-coupling；
The metal ground plate of described metal micro-strip paster both sides respectively embeds a defect ground structure to described dielectric-slab, and described defect ground structure is helical structure, by regulating wave filter trap mid frequency described in the length adjustment of described helical structure.
Further, described metal micro-strip paster includes: step impedance resonator, the first interdigital coupling unit and the second interdigital coupling unit,
Described first interdigital coupling unit and the second interdigital coupling unit are symmetricly set in described step impedance resonator both sides, are fixed on described dielectric-slab.
Further, described metal micro-strip paster is used for regulating the trap frequency scope of described wave filter, particularly as follows:
The trap frequency scope of described wave filter is regulated by regulating the size of step impedance resonator in described metal micro-strip paster.
Further, described metal micro-strip paster is used for regulating the trap frequency scope of described wave filter, particularly as follows:
By regulating the trap frequency scope of wave filter described in the length adjustment of the first interdigital coupling unit and the second interdigital coupling unit in described metal micro-strip paster.
Further, described dielectric-slab is used for regulating the trap frequency scope of described wave filter, particularly as follows:
The trap frequency scope of described wave filter is regulated by regulating the dielectric constant of described dielectric-slab.
Further, it is characterised in that described metal micro-strip paster for regulating the trap frequency scope of described wave filter, particularly as follows:
Described metal micro-strip paster is for regulating the size of the passband of described wave filter.
Further, it is characterised in that described metal micro-strip paster for regulating the trap frequency scope of described wave filter, particularly as follows:
Described metal micro-strip paster is for regulating the center frequency point of described wave filter.
Further, described dielectric-slab is used for regulating the trap frequency scope of described wave filter, particularly as follows:
By regulating the size that the dielectric constant of described dielectric-slab regulates the passband of described wave filter.
Further, described dielectric-slab is used for regulating the trap frequency scope of described wave filter, particularly as follows:
The center frequency point of described wave filter is regulated by regulating the dielectric constant of described dielectric-slab.
A kind of filtering control method, including:
The adjustment to wave filter trap mid frequency is realized by the adjustment of two spiral type defect ground structure length to the metal ground plate embedding metal micro-strip paster both sides；
The metal ground plate of described metal micro-strip paster and described both sides is arranged on dielectric-slab, and described spiral type defect ground structure embeds described metal micro-strip paster extremely described dielectric-slab.
Can be seen that from technique scheme, wave filter disclosed in the present application and filtering control method, including dielectric-slab, be formed at the metal micro-strip paster on dielectric-slab and be formed on ring plate, the metal ground plate of metal micro-strip paster both sides, the metal ground plate of metal micro-strip paster and both sides carries out direct-coupling, the metal ground plate of metal micro-strip paster both sides respectively embeds a defect ground structure to dielectric-slab, defect ground structure is helical structure, realize single trap characteristic, and by the length adjustment wave filter trap mid frequency of adjustable screw shape structure.This programme is by embedding two spiral type defect ground structures on the metal ground plate on dielectric-slab, by the length adjustment trap mid frequency of adjustable screw shape defect ground structure, while achieving the adjustment to wave filter trap mid frequency, it is to avoid the interference of other signals.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, the accompanying drawing used required in embodiment or description of the prior art will be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the premise not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the structural representation of a kind of wave filter disclosed in the embodiment of the present invention；
Fig. 2 is the structural representation of a kind of wave filter disclosed in the embodiment of the present invention；
Fig. 3 is the flow chart of a kind of filtering control method disclosed in the embodiment of the present invention.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is only a part of embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art obtain under not making creative work premise, broadly fall into the scope of protection of the invention.
The invention discloses a kind of wave filter, its structural representation is as it is shown in figure 1, include:
Dielectric-slab 11, be formed at the metal micro-strip paster 12 on dielectric-slab 11 and be formed on dielectric-slab 11, the metal ground plate 13 of metal micro-strip paster 12 both sides.
The metal ground plate 13 of metal micro-strip paster 12 and both sides carries out direct-coupling, the metal ground plate 13 of metal micro-strip paster 12 both sides respectively embeds defect ground structure 14 a to dielectric-slab 11, defect ground structure 14 is helical structure, by the length adjustment wave filter trap mid frequency of adjustable screw shape structure.
Dielectric-slab 11 is the base structure of shaping filter, namely it is no matter metal micro-strip paster 12 or metal ground plate 13 is all provided on dielectric-slab 11, defect ground structure 14 is embedded in dielectric-slab 11 on metal ground plate 13, namely defect ground structure is really on metal ground plate 13 and forms a helical structure, and metal ground plate 13 is directly dug to wear to dielectric-slab 11 and is formed by this helical structure, and metal ground plate 13 is to form a helical structure hollowed out, make the dielectric-slab 11 under metal ground plate 13 that a helical structure can be had to expose, do not stopped by metal ground plate 13.
Furthermore it is also possible to realize the adjustment of the trap frequency scope to wave filter by regulating the dielectric constant of dielectric-slab 11, concrete, it is possible to regulate the size of the passband of wave filter, it is also possible to regulate the position of filter center frequency.
The length of helical structure 14 can regulate, and realizes the adjustment to wave filter trap mid frequency by regulating the length of this helical structure 14 so that the trap mid frequency of wave filter is easily dimmable.
Concrete, when the position of the center frequency point of filter passbands is fixing, it is adjusted merely by spiral type defect ground structure 14 length of helix, the adjustment from 5GHz to 9.5GHz of the wave filter trap mid frequency can be realized, expand trap frequency excursion.
Wave filter disclosed in the present embodiment, including dielectric-slab, be formed at the metal micro-strip paster on dielectric-slab and be formed on ring plate, the metal ground plate of metal micro-strip paster both sides, the metal ground plate of metal micro-strip paster and both sides carries out direct-coupling, the metal ground plate of metal micro-strip paster both sides respectively embeds a defect ground structure to dielectric-slab, defect ground structure is helical structure, it is achieved single trap characteristic, and by the length adjustment wave filter trap mid frequency of adjustable screw shape structure.This programme is by embedding two spiral type defect ground structures on the metal ground plate on dielectric-slab, by the length adjustment trap mid frequency of adjustable screw shape defect ground structure, while achieving the adjustment to wave filter trap mid frequency, it is to avoid the interference of other signals.
Present embodiment discloses a kind of wave filter, its structural representation is as in figure 2 it is shown, include:
Dielectric-slab 21, it is formed at the metal micro-strip paster 22 on dielectric-slab 21, be formed on dielectric-slab 21, the metal ground plate 23 of metal micro-strip paster 22 both sides, the metal ground plate 23 of metal micro-strip paster 22 both sides respectively embeds defect ground structure 24 a to dielectric-slab 21, it addition, metal micro-strip paster 22 is made up of step impedance resonator the 221, first interdigital coupling unit 222 and the second interdigital coupling unit 223.
The metal ground plate 23 of metal micro-strip paster 22 and both sides carries out direct-coupling, concrete, can be: the first interdigital coupling unit 222 and the second interdigital coupling unit 223 are symmetricly set in step impedance resonator 221 both sides, it is fixed on dielectric-slab 21, the direct-coupling of the metal ground plate 23 of realization and both sides, and by the length adjustment wave filter trap mid frequency of the defect ground structure of adjustable screw shape structure.
Wherein, metal micro-strip paster 22 may be used for regulating the trap frequency scope of wave filter, concrete, it is possible to for: regulate the trap frequency scope of wave filter by regulating the size of step impedance resonator 221 in metal micro-strip paster 22；The trap frequency scope of the length adjustment wave filter of the first interdigital coupling unit 222 and the second interdigital coupling unit 223 in metal micro-strip paster 22 that regulates can also be passed through.
No matter it is the trap frequency scope being regulated wave filter by the size of step impedance resonator 221, or by the trap frequency scope of the length adjustment wave filter of the first interdigital coupling unit 222 and the second interdigital coupling unit 223, the position of its size of passband that specifically all can regulate wave filter and center frequency point.
Wave filter disclosed in the present embodiment, including dielectric-slab, be formed at the metal micro-strip paster on dielectric-slab and be formed on ring plate, the metal ground plate of metal micro-strip paster both sides, the metal ground plate of metal micro-strip paster and both sides carries out direct-coupling, the metal ground plate of metal micro-strip paster both sides respectively embeds a defect ground structure to dielectric-slab, defect ground structure is helical structure, it is achieved single trap characteristic, and by the length adjustment wave filter trap mid frequency of adjustable screw shape structure.This programme is by embedding two spiral type defect ground structures on the metal ground plate on dielectric-slab, by the length adjustment trap mid frequency of adjustable screw shape defect ground structure, while achieving the adjustment to wave filter trap mid frequency, it is to avoid the interference of other signals.
Present embodiment discloses a kind of filtering control method, its flow chart is as it is shown on figure 3, include:
Step S31, realize adjustment to wave filter trap mid frequency by regulating of two spiral type defect ground structure length to the metal ground plate embedding metal micro-strip paster both sides；
The metal ground plate of step S32, metal micro-strip paster and both sides is arranged on dielectric-slab, and spiral type defect ground structure embeds metal micro-strip paster to dielectric-slab.
Disclosed in the present embodiment, filtering control method is applied to wave filter, and wherein, wave filter includes: dielectric-slab, be formed at the metal micro-strip paster on dielectric-slab and be formed on dielectric-slab, the metal ground plate of metal micro-strip paster both sides.The metal ground plate of metal micro-strip paster and both sides carries out direct-coupling, the metal ground plate of paster both sides, metal micro-shop respectively embeds a defect ground structure to dielectric-slab, defect ground structure is helical structure, by the length adjustment wave filter trap mid frequency of adjustable screw shape structure.
Dielectric-slab is the base structure of shaping filter, namely it is no matter metal micro-strip paster or metal ground plate is all provided on dielectric-slab, defect ground structure is embedded in dielectric-slab on metal ground plate, namely defect ground structure is really on metal ground plate and forms a helical structure, and metal ground plate is directly dug and wears to dielectric-slab formation by this helical structure, and metal ground plate is to form a helical structure hollowed out, enable the dielectric-slab under metal ground plate to have a helical structure to expose, do not stopped by metal ground plate.
Furthermore it is also possible to realize the adjustment of the trap frequency scope to wave filter by regulating the dielectric constant of dielectric-slab, concrete, it is possible to regulate the size of the passband of wave filter, it is also possible to regulate the position of filter center frequency.
The length of helical structure can regulate, and realizes the adjustment to wave filter trap mid frequency by regulating the length of this helical structure so that the trap mid frequency of wave filter is easily dimmable.
Concrete, when the position of the center frequency point of filter passbands is fixing, it is adjusted merely by spiral type defect ground structure the length of helix, the adjustment from 5GHz to 9.5GHz of the wave filter trap mid frequency can be realized, expand trap frequency excursion.
The metal ground plate of metal micro-strip paster and both sides carries out direct-coupling, concrete, can be: the first interdigital coupling unit and the second interdigital coupling unit are symmetricly set in step impedance resonator both sides, it is fixed on dielectric-slab, the direct-coupling of the metal ground plate of realization and both sides, and by the length adjustment wave filter trap mid frequency of the defect ground structure of adjustable screw shape structure.
Wherein, metal micro-strip paster may be used for regulating the trap frequency scope of wave filter, concrete, it is possible to for: regulate the trap frequency scope of wave filter by regulating the size of step impedance resonator in metal micro-strip paster；The trap frequency scope of the length adjustment wave filter of the first interdigital coupling unit and the second interdigital coupling unit in metal micro-strip paster that regulates can also be passed through.
No matter it is the trap frequency scope being regulated wave filter by the size of step impedance resonator, or by the trap frequency scope of the length adjustment wave filter of the first interdigital coupling unit and the second interdigital coupling unit, the position of its size of passband that specifically all can regulate wave filter and center frequency point.
Filtering control method disclosed in the present embodiment, it is applied to wave filter, its median filter includes dielectric-slab, be formed at the metal micro-strip paster on dielectric-slab and be formed on ring plate, the metal ground plate of metal micro-strip paster both sides, the metal ground plate of metal micro-strip paster and both sides carries out direct-coupling, the metal ground plate of metal micro-strip paster both sides respectively embeds a defect ground structure to dielectric-slab, defect ground structure is helical structure, realize single trap characteristic, and by the length adjustment wave filter trap mid frequency of adjustable screw shape structure.This programme is by embedding two spiral type defect ground structures on the metal ground plate on dielectric-slab, by the length adjustment trap mid frequency of adjustable screw shape defect ground structure, while achieving the adjustment to wave filter trap mid frequency, it is to avoid the interference of other signals.
In this specification, each embodiment adopts the mode gone forward one by one to describe, and what each embodiment stressed is the difference with other embodiments, between each embodiment identical similar portion mutually referring to.For device disclosed in embodiment, owing to it corresponds to the method disclosed in Example, so what describe is fairly simple, relevant part illustrates referring to method part.
Professional further appreciates that, the unit of each example described in conjunction with the embodiments described herein and algorithm steps, can with electronic hardware, computer software or the two be implemented in combination in, in order to clearly demonstrate the interchangeability of hardware and software, generally describe composition and the step of each example in the above description according to function.These functions perform with hardware or software mode actually, depend on application-specific and the design constraint of technical scheme.Professional and technical personnel specifically can should be used for using different methods to realize described function to each, but this realization is it is not considered that beyond the scope of this invention.
The method described in conjunction with the embodiments described herein or the step of algorithm can directly use the software module that hardware, processor perform, or the combination of the two is implemented.Software module can be placed in any other form of storage medium known in random access memory (RAM), internal memory, read only memory (ROM), electrically programmable ROM, electrically erasable ROM, depositor, hard disk, moveable magnetic disc, CD-ROM or technical field.
Described above to the disclosed embodiments, makes professional and technical personnel in the field be capable of or uses the present invention.The multiple amendment of these embodiments be will be apparent from for those skilled in the art, and generic principles defined herein can without departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention is not intended to be limited to the embodiments shown herein, and is to fit to the widest scope consistent with principles disclosed herein and features of novelty.
Claims (10)
1. a wave filter, it is characterised in that including: dielectric-slab, be formed at the metal micro-strip paster on described dielectric-slab and be formed on described dielectric-slab, the metal ground plate of metal micro-strip paster both sides,
The metal ground plate of described metal micro-strip paster and described both sides carries out direct-coupling；
The metal ground plate of described metal micro-strip paster both sides respectively embeds a defect ground structure to described dielectric-slab, and described defect ground structure is helical structure, by regulating wave filter trap mid frequency described in the length adjustment of described helical structure.
2. wave filter according to claim 1, it is characterised in that described metal micro-strip paster includes: step impedance resonator, the first interdigital coupling unit and the second interdigital coupling unit,
Described first interdigital coupling unit and the second interdigital coupling unit are symmetricly set in described step impedance resonator both sides, are fixed on described dielectric-slab.
3. wave filter according to claim 2, it is characterised in that described metal micro-strip paster is used for regulating the trap frequency scope of described wave filter, particularly as follows:
The trap frequency scope of described wave filter is regulated by regulating the size of step impedance resonator in described metal micro-strip paster.
4. wave filter according to claim 2, it is characterised in that described metal micro-strip paster is used for regulating the trap frequency scope of described wave filter, particularly as follows:
By regulating the trap frequency scope of wave filter described in the length adjustment of the first interdigital coupling unit and the second interdigital coupling unit in described metal micro-strip paster.
5. wave filter according to claim 1, it is characterised in that described dielectric-slab is used for regulating the trap frequency scope of described wave filter, particularly as follows:
The trap frequency scope of described wave filter is regulated by regulating the dielectric constant of described dielectric-slab.
6. the wave filter according to any one in claim 3 or 4, it is characterised in that described metal micro-strip paster is used for regulating the trap frequency scope of described wave filter, particularly as follows:
Described metal micro-strip paster is for regulating the size of the passband of described wave filter.
7. the wave filter according to any one in claim 3 or 4, it is characterised in that described metal micro-strip paster is used for regulating the trap frequency scope of described wave filter, particularly as follows:
Described metal micro-strip paster is for regulating the center frequency point of described wave filter.
8. wave filter according to claim 5, it is characterised in that described dielectric-slab is used for regulating the trap frequency scope of described wave filter, particularly as follows:
By regulating the size that the dielectric constant of described dielectric-slab regulates the passband of described wave filter.
9. wave filter according to claim 5, it is characterised in that described dielectric-slab is used for regulating the trap frequency scope of described wave filter, particularly as follows:
The center frequency point of described wave filter is regulated by regulating the dielectric constant of described dielectric-slab.
10. a filtering control method, it is characterised in that including:
The adjustment to wave filter trap mid frequency is realized by the adjustment of two spiral type defect ground structure length to the metal ground plate embedding metal micro-strip paster both sides；
The metal ground plate of described metal micro-strip paster and described both sides is arranged on dielectric-slab, and described spiral type defect ground structure embeds described metal micro-strip paster extremely described dielectric-slab.
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| CN201610298784.XA CN105762449A (en) | 2016-05-06 | 2016-05-06 | Filter and filtering control method |
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| CN201610298784.XA CN105762449A (en) | 2016-05-06 | 2016-05-06 | Filter and filtering control method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107863592A (en) * | 2017-12-11 | 2018-03-30 | 四川九鼎智远知识产权运营有限公司 | A kind of hybrid guided mode ultra-wide band filter |
| CN107863591A (en) * | 2017-12-11 | 2018-03-30 | 四川九鼎智远知识产权运营有限公司 | A kind of wave filter |
| CN108054478A (en) * | 2017-12-11 | 2018-05-18 | 四川九鼎智远知识产权运营有限公司 | A kind of ultra-wide band filter |
| CN111934069A (en) * | 2020-08-11 | 2020-11-13 | 重庆邮电大学 | Coplanar waveguide dual-frequency band-pass filter based on spiral defected ground |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107863592A (en) * | 2017-12-11 | 2018-03-30 | 四川九鼎智远知识产权运营有限公司 | A kind of hybrid guided mode ultra-wide band filter |
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Application publication date: 20160713 |