CN204885379U - Three mould bi -pass area microstrip filters with wide passband - Google Patents
Three mould bi -pass area microstrip filters with wide passband Download PDFInfo
- Publication number
- CN204885379U CN204885379U CN201520522764.7U CN201520522764U CN204885379U CN 204885379 U CN204885379 U CN 204885379U CN 201520522764 U CN201520522764 U CN 201520522764U CN 204885379 U CN204885379 U CN 204885379U
- Authority
- CN
- China
- Prior art keywords
- resonator
- minor matters
- hexagonal
- mould
- line
- 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.)
- Expired - Fee Related
Links
Landscapes
- Control Of Motors That Do Not Use Commutators (AREA)
Abstract
The utility model relates to a three mould bi -pass area microstrip filters with wide passband belongs to wave filter technical field. This wave filter includes multimode syntonizer part, link part, feeder part, six prism medium base plate and ground plates, this wave filter make full use of hexagon syntonizer inner space, on totally not increasing the wave filter and had the basis of structure size, through in inside load step impedance minor matters, on the one hand, the first -order of completely splitting hexagon syntonizer and second order degenerate mode to, introduce two new modes respectively with first -order degenerate mode and the collaborative work of second order degenerate mode, form two three mould passbands, expanded the bandwidth of two passbands very effectively, the relative bandwidth of every passband all is greater than 10%, on the other hand introduces a plurality of transmission zero in the stop band of wave filter, improved the stop band rejection characteristic to make this wave filter have wide application prospect.
Description
Technical field
The utility model belongs to wave filter technology field, relates to a kind of three mould Double-band-pass microstrip filters with broad passband.
Background technology
Along with the high speed development of the communication technology, filter extracts useful signal as radio-frequency front-end, and suppress the Primary Component of interference signal, the quality of its performance directly affects the performance of whole system.Thus, but the simply compact filtering performance of project organization is superior to be easy to manufacture integrated filter simultaneously and to obtain always and study widely.
In the design of microstrip filter, toroidal cavity resonator is extensively concerned because of its intrinsic degenerate mode.The degenerate mode being separated annular resonance can the pass band width of highly effective increase filter, meanwhile, increases physical dimension and the processed complex degree of filter hardly.And be designed to the filter of dual-passband or many pass-band performances, on the one hand a filter can be made to meet the communication standards of multiple needs, on the other hand also the miniaturization of Equivalent realization filter and easy of integrationization simultaneously.
Carry out in the mode of double-passband filter design at the existing toroidal cavity resonator that utilizes, mainly contain two class implementations, one is utilize single toroidal cavity resonator to design, such passband relative narrower, and not easily produces multiple generation and improve stopband suppression characteristic zero point; Two is utilize multiple resonator Joint Designing, and such filter general performance is superior, and passband can be broadband or ultra broadband, and its passband is multimode form substantially, and its shortcoming is exactly the size that the employing of multiple resonator can increase filter undoubtedly.
Utility model content
In view of this, the purpose of this utility model is to provide a kind of three mould Double-band-pass microstrip filters with broad passband, this filter makes full use of hexagon resonator inside space, do not increasing on the basis of filter existing structure size completely, by loading Stepped Impedance minor matters in inside, on the one hand, the single order of fully nonlinear water wave hexagon resonator and second order degenerate mode, and, introduce two new patterns respectively with single order degenerate mode and the collaborative work of second order degenerate mode, form two three mould passbands, effectively extend the bandwidth of two passbands, the relative bandwidth of each passband is all greater than 10%, on the other hand, in the stopband of filter, introduce multiple transmission zero, improve stopband suppression characteristic.
For achieving the above object, the utility model provides following technical scheme:
There are three mould Double-band-pass microstrip filters of broad passband, comprise multimode resonator part, coupling line part, feeding line portion, hexagonal prism medium substrate and ground plate;
Described multimode resonator part, coupling line part, feeding line portion are all positioned at medium substrate upper surface; Ground plate is positioned at medium substrate lower surface;
Described multimode resonator part comprises hexagonal ring resonator and the inner Stepped Impedance minor matters loaded thereof; The single order of this multimode resonator and second order mode form by three moulds, include degenerate mode and a new mould introduced by Stepped Impedance minor matters that a pair hexagonal ring resonator itself have; Coupling line lays respectively at lower-left and the both sides, bottom right of multimode resonator, its angle is 120 °, and wherein, the limit of the cyclic hexagonal that coupling line is corresponding with it is parallel, and being stretched out certain length by both wings, thus the good coupling realized between resonator and provide wider stopband to suppress; One termination coupling line of feeder line, another termination 50 Ω coaxial inner conductor; Ground plate is positioned at medium substrate lower surface, connects 50 Ω coaxial outer conductors, and ground plate and the same size of medium substrate, namely the medium substrate back side is for entirely to cover copper.
Further, the regular hexagon toroidal cavity resonator part in described multimode resonator, length of side W1 is 16 ~ 18mm, live width L1 is 1.5 ~ 1.7mm, changes the length of W1, directly can change the working range of the dual-passband of whole filter; It is that R1 circular metal patch forms that Stepped Impedance minor matters loading section in multimode resonator is the impedance line minor matters of W4, three Low ESR rectangular metal pasters with chamfering structure and a radius by three width, wherein three high impedance lines are drawn by the mid point on non-conterminous three limits of hexagonal ring resonator, intersect at resonator center, W4 is 0.2 ~ 0.4mm, wherein, the high impedance line be positioned on filter Axisymmetric Distributed Line continues to extend and termination radius is the circular metal patch of R1; The length L4 of two longer rectangular patches is 10 ~ 11mm, and width W 2 is 3 ~ 4mm, and the length L5 of shorter rectangular patch is 5 ~ 6mm, and width W 3 is 3 ~ 4mm; Described three rectangular patches have all done the chamfering that the length of side is the right angled isosceles triangle of 0.6mm; Circular patch radius R 1 is 3.5 ~ 4.5mm, and the circular distance L2 to hexagonal centre position is 7.5 ~ 8.5mm.By adding this loading minor matters, the pentagon of two types is defined in the inside of hexagonal ring resonator, each pentagon can produce new pattern and hexagonal degenerate mode is operated in adjacent frequency, and these loading minor matters are mainly used in spread bandwidth and improve stopband suppressing.
Further, the regular hexagon length of side W of the upper and lower surface of described positive six prism medium substrates is 26 ~ 28mm, and height of column H is 1.524mm, and material is RogersRO4350B, relative dielectric constant 3.48, and relative permeability is 1.0, loss tangent angle value 0.0037.
Further, described coupling line part is positioned at lower-left and the lower right side of toroidal cavity resonator, and the vertical range S between resonator is 0.1 ~ 0.3mm, coupling line width L6 is 0.1 ~ 0.3mm, the hexagonal limit of the annular that coupling line is corresponding with it is parallel, and by the length of both wings respectively to extension W6 to be 0.6 ~ 0.8mm and W5 be 4 ~ 5mm.
Further, described feeding line portion length L7 is 7.5 ~ 8.5mm, and feeder line width W 7 is 3.2 ~ 3.6mm.
The beneficial effects of the utility model are: first, compared to the mentality of designing of the two or more resonator design double-passband filter of general employing, the Stepped Impedance loading minor matters structure that the utility model makes full use of a toroidal cavity resonator and inside thereof realizes three mould dual-passband filter design.By being separated single toroidal cavity resonator single order and second order degenerate mode, the miniaturization of this filter that the number being equivalent to minimizing resonator realizes, secondly, the existing dual-passband loop filter based on single loop design is Dual-mode two-way band structure substantially, namely be only make use of special construction to be separated the intrinsic degenerate mode of toroidal cavity resonator, and the utility model is by loading Stepped Impedance minor matters in toroidal cavity resonator inside, the intrinsic single order of toroidal cavity resonator and second order degenerate mode are not only separated, and introduce two new moulds respectively with single order and the collaborative work of second order degenerate mode, further expand the pass band width of filter, realize the three mould double-passband filter designs based on single resonator, improve the pass-band performance of filter, finally, have and extend the coupling line of minor matters and Stepped Impedance and load minor matters and be filter and introduce new transmission zero, improve the stopband inhibitory action of filter.
Accompanying drawing explanation
In order to make the purpose of this utility model, technical scheme and beneficial effect clearly, the utility model provides following accompanying drawing to be described:
Fig. 1 is the overall structure figure of the double-passband filter described in this practicality;
Fig. 2 is the front view of the double-passband filter described in this practicality;
Fig. 3 is the end view of the double-passband filter described in this practicality;
The S parameter simulation result that Fig. 4 is the HFSS of the double-passband filter described in this practicality;
Wherein: 1, hexagonal prism medium substrate; 2, hexagonal annular resonator parts; 3, Stepped Impedance loads the circular patch of minor matters part; 4, Stepped Impedance loads the long rectangular metal patch portion of minor matters part; 5, Stepped Impedance loads the short rectangular metal patch portion of minor matters part; 6, Stepped Impedance loads the high impedance line part of minor matters part; 7, coupling line part; 8, feeding line portion.
Embodiment
Below in conjunction with accompanying drawing, preferred embodiment of the present utility model is described in detail.
Fig. 1 is the overall structure figure of the double-passband filter described in this practicality, and as shown in the figure, this filter comprises hexagonal prism medium substrate 1; Hexagonal annular resonator parts 2; The long rectangular patch of circular patch 3, two 4, short rectangular patch 5 and narrow high impedance line 6 jointly constitute the Stepped Impedance being positioned at hexagonal ring resonator inside and load minor matters; The Stepped Impedance of hexagonal annular resonator parts 2 and its inside loads minor matters and jointly constitutes a multimode resonator; Coupling line part 7; Feeding line portion 8.Hexagonal prism dielectric substrate thickness is expressed as H, and adopt material RogersRO4350B, its dielectric constant is 3.48, relative permeability 1.0, and loss tangent value is 0.0037.Multimode resonator part, Stepped Impedance minor matters loading section, coupling line part, feeding line portion thickness are all identical.Fig. 2 is the front view of the double-passband filter described in this practicality, and Fig. 3 is the end view of the double-passband filter described in this practicality.The optimal size that emulation obtains filter is as shown in table 1.
Multimode resonator of telling, by changing the length W1 of multimode resonator, directly can change the working range of the dual-passband of whole filter.The Stepped Impedance minor matters that multimode resonator loads its inside by a hexagonal ring resonator are formed.Single order and the second order mode of hexagonal ring resonator are degenerate mode.Hexagonal ring resonator be divide into the pentagon ring of two kinds of dissimilar Stepped Impedance types by Stepped Impedance minor matters, directly over pentagon ring by adding extra circular patch, the frequency of the new mould produced by this pentagon ring can be reduced near the single order degenerate mode of hexagonal rings, and single order degenerate mode is divided mutually.Consider the symmetry of resonator, lower-left is identical with the pentagon of two Stepped Impedance types of bottom right, common another new mould produced near a second order degenerate mode working in hexagonal rings, and second order degenerate mode is divided mutually.Regulate the radius of circular patch and the distance to hexagonal rings central point, the First-Order Mode distribution of major effect multimode resonator; Regulate the width of rectangular patch, length and the distance to hexagonal rings central point, the second order mode distribution of major effect multimode resonator.
Described coupling line part 5 lays respectively at lower-left and the lower right side of resonator 2, and the vertical range S of distance resonator outer shroud is 0.1 ~ 0.2mm, and width is L6 is 0.2 ~ 0.3mm.The limit of the cyclic hexagonal that coupling line is corresponding with it is parallel, and to be stretched out certain length by both wings, for the good coupling that realizes between resonator with provide wider stopband to suppress.
Use the antenna structure model of high-frequency electromagnetic simulation software HFSS13.0 to above-mentioned foundation to carry out emulation experiment, show that electronically small antenna physical dimension optimal value is as shown in table 1: in table, H is the thickness of medium substrate.
Table 1HFSS13.0 emulates to obtain double-passband filter optimal size
In the present embodiment, use HFSS13.0 to simulate antenna performance parameters, simulation analysis is carried out to filter S parameter.
Fig. 4 emulates the filter S parameter curve chart obtained.As shown in the figure, designed filter has two-3dB passbands, be respectively 1.796GHz ~ 2.105GHz and 3.317GHz ~ 3.714GHz, relative bandwidth is respectively 15.8% and 11.3%, in passband, minimum insertion loss appoints 0.8dB and 0.81dB respectively, have 7 transmission zeros in stopband, be positioned at 1.694GHz, 2.160GHz, 2.832GHz, 3.256GHz, 3.962GHz, 4.384GHz, 4.548GHz successively, stopband suppresses to be greater than 15dB.Based on this design of Simulation, this filter may be simultaneously operated in PCS (1.85 ~ 1.99GHz) and WiMAX3.5GHz (3.3 ~ 3.6GHz) working band, and the S in 1.85 ~ 1.99GHz and 3.3 ~ 3.6GHz frequency range
11parameter is all less than-10dB.
What finally illustrate is, above preferred embodiment is only in order to illustrate the technical solution of the utility model and unrestricted, although be described in detail the utility model by above preferred embodiment, but those skilled in the art are to be understood that, various change can be made to it in the form and details, and not depart from the utility model claims limited range.
Claims (6)
1. there are three mould Double-band-pass microstrip filters of broad passband, it is characterized in that: comprise multimode resonator part, coupling line part, feeding line portion, hexagonal prism medium substrate and ground plate;
Described multimode resonator part, coupling line part, feeding line portion are all positioned at medium substrate upper surface; Ground plate is positioned at medium substrate lower surface;
Described multimode resonator part comprises hexagonal ring resonator and the inner Stepped Impedance minor matters loaded thereof; The single order of this multimode resonator and second order mode form by three moulds, include a pair degenerate mode and a new mould introduced by Stepped Impedance minor matters; Coupling line lays respectively at lower-left and the both sides, bottom right of multimode resonator, its angle is 120 °, and wherein, the limit of the cyclic hexagonal that coupling line is corresponding with it is parallel, and being stretched out certain length by both wings, thus the good coupling realized between resonator and provide wider stopband to suppress; One termination coupling line of feeder line, another termination 50 Ω coaxial inner conductor; Ground plate is positioned at medium substrate lower surface, connects 50 Ω coaxial outer conductors.
2. a kind of three mould Double-band-pass microstrip filters with broad passband according to claim 1, it is characterized in that: the Stepped Impedance minor matters that described hexagonal ring resonator loads are made up of three elongated high impedance line minor matters, three Low ESR rectangular metal pasters with chamfering structure and a circular metal patch, wherein, the high impedance line be positioned on filter Axisymmetric Distributed Line continues to extend and termination radius is circular metal patch; By loading Stepped Impedance minor matters, the pentagon of two types is defined in the inside of hexagonal ring resonator, each pentagon can produce new pattern and hexagonal degenerate mode is operated in adjacent frequency, and these Stepped Impedance minor matters are mainly used in spread bandwidth and improve stopband suppressing.
3. a kind of three mould Double-band-pass microstrip filters with broad passband according to claim 2, it is characterized in that: the regular hexagon toroidal cavity resonator part in described multimode resonator, length of side W1 is 16 ~ 18mm, live width L1 is 1.5 ~ 1.7mm; It is that R1 circular metal patch forms that Stepped Impedance minor matters loading section is the impedance line minor matters of W4, three Low ESR rectangular metal pasters with chamfering structure and a radius by three width, wherein three high impedance lines are drawn by the mid point on non-conterminous three limits of hexagonal ring resonator, intersect at resonator center, W4 is 0.2 ~ 0.4mm; The length L4 of two longer rectangular patches is 10 ~ 11mm, and width W 2 is 3 ~ 4mm, and the length L5 of shorter rectangular patch is 5 ~ 6mm, and width W 3 is 3 ~ 4mm; Described three rectangular patches have all done the chamfering that the length of side is the right angled isosceles triangle of 0.6mm; Circular patch radius R 1 is 3.5 ~ 4.5mm, and the circular distance L2 to hexagonal centre position is 7.5 ~ 8.5mm.
4. a kind of three mould Double-band-pass microstrip filters with broad passband according to claim 3, it is characterized in that: the regular hexagon length of side W of the upper and lower surface of described hexagonal prism medium substrate is 26 ~ 28mm, height of column H is 1.524mm, material is RogersRO4350B, relative dielectric constant 3.48, relative permeability is 1.0, loss tangent angle value 0.0037.
5. a kind of three mould Double-band-pass microstrip filters with broad passband according to claim 4, it is characterized in that: described coupling line part is positioned at lower-left and the lower right side of toroidal cavity resonator, and the vertical range S between resonator is 0.1 ~ 0.3mm, coupling line width L6 is 0.1 ~ 0.3mm, the hexagonal limit of the annular that coupling line is corresponding with it is parallel, and by the length of both wings respectively to extension W6 to be 0.6 ~ 0.8mm and W5 be 4 ~ 5mm.
6. a kind of three mould Double-band-pass microstrip filters with broad passband according to claim 5, it is characterized in that: described feeding line portion length L7 is 7.5 ~ 8.5mm, feeder line width W 7 is 3.2 ~ 3.6mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520522764.7U CN204885379U (en) | 2015-07-15 | 2015-07-15 | Three mould bi -pass area microstrip filters with wide passband |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520522764.7U CN204885379U (en) | 2015-07-15 | 2015-07-15 | Three mould bi -pass area microstrip filters with wide passband |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204885379U true CN204885379U (en) | 2015-12-16 |
Family
ID=54829718
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520522764.7U Expired - Fee Related CN204885379U (en) | 2015-07-15 | 2015-07-15 | Three mould bi -pass area microstrip filters with wide passband |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204885379U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109768781A (en) * | 2018-12-25 | 2019-05-17 | 天津大学 | Split type resonator |
-
2015
- 2015-07-15 CN CN201520522764.7U patent/CN204885379U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109768781A (en) * | 2018-12-25 | 2019-05-17 | 天津大学 | Split type resonator |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103700910B (en) | The two band filter of a kind of complementary openings resonant ring and defect ground structure half module substrate integrated wave guide | |
| CN112332054B (en) | Dual-passband band-pass filter based on asymmetric coupling line | |
| CN204130667U (en) | A kind of half module substrate integrated wave guide two band filter | |
| CN102394328B (en) | Microstrip bimodule band-pass filter based on DGS (defected ground structure) square-ring resonator | |
| CN104900949A (en) | Broadband three-mode balanced band-pass filter based on interdigital multi-mode resonators | |
| CN104319440A (en) | Hairpin type dual passband electrically-tunable microwave filter | |
| CN102610879A (en) | Double-frequency band-pass filter | |
| CN103187600B (en) | Dual-mode three-way wide-band filter based on multi-branch loaded square resonance ring | |
| CN104681972B (en) | There is the groove loading ultra-wideband monopole antenna of stabilising direction figure and good Out-of-band rejection ability simultaneously | |
| CN205159476U (en) | Power distribution unit with double frequency -band filtering function | |
| CN104269588B (en) | Small-scale hexagonal three-mode filter based on center branch knot loading | |
| CN108767382B (en) | The adjustable three moulds bandpass filter of electricity based on substrate integration wave-guide | |
| CN106848507A (en) | Double-band-pass microstrip filter based on combination resonator | |
| CN203747009U (en) | Filtering power divider with double passbands | |
| CN204885379U (en) | Three mould bi -pass area microstrip filters with wide passband | |
| CN202523822U (en) | Double-frequency band pass filter | |
| CN105514544B (en) | Compact three mode filter of screw type of plane | |
| CN204067532U (en) | A kind of double frequency band-pass filter based on defect microstrip line | |
| CN104332683B (en) | A kind of dual-passband hexagon wave filter for being applied to PCS ＆ WiMAX frequency ranges | |
| CN210430042U (en) | Dual-mode dual-frequency coaxial cavity filter | |
| CN207282679U (en) | A kind of compact-sized bimodule band-pass filter | |
| CN111682292B (en) | Four-way power division filter based on four-mode resonator | |
| CN209747694U (en) | Low-pass filter with complementary split resonant ring and U-shaped groove defected ground | |
| CN105048031A (en) | Micro-strip ultra wide band filter realized by using UC-PBG and interdigital structure | |
| CN107799857A (en) | A kind of compact-sized bimodule band-pass filter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151216 Termination date: 20160715 |