CN203056054U - Double-trap-wave UWB filter with adjustable trap waves and adjustable pass-band - Google Patents
Double-trap-wave UWB filter with adjustable trap waves and adjustable pass-band Download PDFInfo
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- CN203056054U CN203056054U CN 201220665191 CN201220665191U CN203056054U CN 203056054 U CN203056054 U CN 203056054U CN 201220665191 CN201220665191 CN 201220665191 CN 201220665191 U CN201220665191 U CN 201220665191U CN 203056054 U CN203056054 U CN 203056054U
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- counterfoil
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Abstract
The utility model discloses a double-trap-wave UWB filter with adjustable trap waves and adjustable pass-band. The filter comprises a medium substrate (104), a multi-mode resonant cavity (101), a fractal patch structure (106), an open circuited stud micro-strip structure (103) and a combined transmission coupling wire (102) formed on the medium substrate, and a metallic ground plate (105) under the medium substrate. The bandwidth of the pass-band meets the UWB requirements by utilizing a multi-mode resonant cavity, and the pass-band is adjustable. The open circuited stud micro-strip structure realizes double trap waves and the trap waves are adjustable. The double trap waves are next to 5.2/5.7GHz, and interference of WLAN signals on the UWB filter can be filtered. The filter is simple in design, compact in structure, convenient for processing, low in cost and adjustable for trap waves and pass-band.
Description
Technical field
The utility model relates to two trap UWB filters that a kind of trap is adjustable and passband is adjustable, this filter can filtering UWB in the interference of WLAN signal.
Background technology
In February, 2002, FCC (FCC) approval 3.1-10.6GHz frequency range is used for business telecommunication, so UWB is widely used.Yet in the commercial scope of FCC definition, the UWB signal may be subjected to such as WiAX(3.5-GHz), WLAN(5.15-5.825GHz), RFID(6.8GHz) etc. the interference of signal.How solving co-channel interference becomes UWB research important content, and the filter that therefore has trap characteristic has very high practical value.
Occurred some mentalities of designing in recent years, as multimode resonator (MMR), via structure etc., though these structures can realize the trap effect, but trap is non-adjustable.Or introduce the poor line of rabbet joint that refers to, and realize two trap characteristics, though trap is adjustable, the passband of broadband filter is non-adjustable.So it is adjustable that design has passband, two trap UWB filters that trap is adjustable have great importance.
The utility model content
The purpose of this utility model is to provide has two trap UWB filters that passband is adjustable and trap is adjustable, and this filter can reduce the WLAN signal to the interference of UWB signal.
The technical scheme that the utility model adopts:
Two trap UWB filters that trap is adjustable and passband is adjustable, comprise multimode cavity 101, the fractal paster structure 106 that is formed at the dielectric-slab upper surface, microstrip structure 103, the combined transmission coupling line 102 of the counterfoil of opening a way, it is characterized in that described multimode cavity comprises that annulus loads counterfoil 1011, microstrip transmission line 1012, straight-flanked ring loads counterfoil 1013 and open circuit loads counterfoil 1014.
Two trap UWB filters that described trap is adjustable and passband is adjustable is characterized in that, have two open circuit counterfoils 1031,1032 microstrip structure 103, produce trap characteristic and trap is adjustable; And the width of each counterfoil broadside of microstrip line of open circuit counterfoil equates, and each broadside equates with the gap of straight-flanked ring.
Two trap UWB filters that described trap is adjustable and passband is adjustable is characterized in that, have two open circuit counterfoils 1031,1032 microstrip structure 103, produce trap characteristic; By regulating open circuit counterfoil length, realize that trap is adjustable; And the width of each counterfoil broadside of microstrip line of open circuit counterfoil equates, and each broadside equates with the gap of straight-flanked ring.
Two trap UWB filters that described trap is adjustable and passband is adjustable is characterized in that, have the fractal paster structure 106 of triangle, suppress to improve the decay of passband both sides, and fractal be that a big equilateral triangle oppositely removes a little equilateral triangle and constitutes.
Two trap UWB filters that described trap is adjustable and passband is adjustable, it is characterized in that, the loading counterfoil 1011, microstrip transmission line 1012 and straight-flanked ring by annulus and load counterfoil 1013 of multimode cavity, open circuit loads counterfoil 1014 and constitutes, and loads the radius of counterfoil 1011 and the ultra broadband that transmission line 1012 length and width produce 3.1-10.6GHz by adjusting annulus.
This utility model filter has following characteristic and advantage with respect to existing filter:
Simplicity of design, compact conformation, easy to process, with low cost, passband is adjustable, trap is adjustable.
By adjusting the size of multimode resonator 101, can regulate passband at UWB(3.1-10.6GHz) scope.
By adjusting the length of band open circuit counterfoil microstrip line construction 103, can realize that trap is adjustable.
Passband is adjustable Yu trap is adjustable does not disturb mutually.
Improving the decay of passband both sides by the fractal paster structure 106 of triangle suppresses.
Description of drawings
Fig. 1 is the basic structure vertical view of the utility model embodiment 1;
Fig. 2 is the basic structure end view of the utility model embodiment 1;
Fig. 3 is the multimode cavity structure chart of the utility model embodiment 1;
Fig. 4 is the open circuit counterfoil microstrip line construction figure of the utility model embodiment 1;
Embodiment
The utility model has designed two trap UWB filters, and this filter trap is adjustable, passband is adjustable, and both adjustment are not disturb mutually.
Below in conjunction with the accompanying drawing distance utility model is done more detailed description:
An example of the present utility model as shown in Figure 2, medium substrate 104 is that dielectric constant is 10.2 RT/Duroid6010.The thickness of this medium substrate is 1.27mm, and the dielectric loss tangent angle is 0.0023.Metal ground plate 105 under the medium substrate adopts copper product.
As shown in Figure 1, two trap UWB filtering that trap of the present utility model is adjustable and passband is adjustable, the fractal paster structure 106 of microstrip structure 103, combined transmission coupling line 102, the triangle of the multimode cavity 101 on the medium substrate, open circuit counterfoil adopts copper product.
As shown in Figure 1, improving the decay of passband both sides by the fractal paster structure 106 of triangle suppresses.
As shown in Figure 3, two trap UWB filters that trap of the present utility model is adjustable and passband is adjustable, its multimode cavity comprises that annulus loads counterfoil 1011, microstrip transmission line 1012 and straight-flanked ring and loads counterfoil 1013, and open circuit loads counterfoil 1014, realizes broadband character by multimode cavity.
As shown in Figure 4, two open counterfoils 1031 of UWB filter employing of the two trap characteristics of the utility model, 1032 microstrip structure are realized two trap characteristics.
The UWB Filter Design parameter of the two trap characteristics of this utility model:
The selection of medium substrate: dielectric constant is 10.2 RT/Duroid6010.The dielectric constant of general medium substrate is between the 2--9.8, and the utility model adopts 10.2 substrate,, high dielectric constant makes the guide wavelength of signal littler, and it is littler that circuit can be done.The dielectric loss tangent angle of substrate is 0.0023, has guaranteed that loss is less.The thickness of this medium substrate is that 1.27mm satisfies required intensity.Multimode cavity and the metal ground plate under the medium substrate on the medium substrate all adopt copper product.
The design of multimode resonator: according to the filter correlation theory, the circular ring structure resonant element of ultra-wideband communications is satisfied in design.By adjusting annular radii and transmission line length and width, adjust bandwidth and cut-off frequency, make related filter satisfy the UWB demand.
Open counterfoil microstrip line design: according to little band transmission theory, calculate resonance frequency, thereby design the dimension of microstrip line with two open counterfoils, produce trap characteristic, the signal at elimination resonance frequency place, thereby inhibition zone external signal.
Claims (5)
1. two trap UWB filters that trap is adjustable and passband is adjustable, the microstrip structure (103), the combined transmission coupling line (102) that comprise the multimode cavity (101) that is formed at the dielectric-slab upper surface, fractal paster structure (106), open circuit counterfoil, it is characterized in that described multimode cavity comprises that annulus loads counterfoil (1011), microstrip transmission line (1012), straight-flanked ring loads counterfoil (1013) and open circuit loads counterfoil (1014).
2. and two trap UWB filters that passband adjustable adjustable according to the described trap of claim 1 is characterized in that, have the microstrip structure (103) of two open circuit counterfoils (1031) (1032), produce trap characteristic; By regulating open circuit counterfoil length, realize that trap is adjustable; And the width of each counterfoil broadside of microstrip line of open circuit counterfoil equates, and each broadside equates with the gap of straight-flanked ring.
3. and two trap UWB filters that passband adjustable adjustable according to the described trap of claim 1 is characterized in that, combined transmission coupling line (102) is open circuit toe structure, and the width of every toe equates with gap between each toe.
4. and two trap UWB filters that passband adjustable adjustable according to the described trap of claim 1 is characterized in that having the fractal paster structure of triangle (106), and fractal be that a big equilateral triangle oppositely removes a little equilateral triangle and constitutes.
5. according to claim 1 or 2 described traps are adjustable and passband is adjustable two trap UWB filters, it is characterized in that, multimode cavity load counterfoil (1011), microstrip transmission line (1012) and straight-flanked ring loading counterfoil (1013) by annulus, open circuit loads counterfoil (1014) and constitutes, and loads the radius of counterfoil (1011) and the ultra broadband that transmission line (1012) length and width produce 3.1-10.6GHz by adjusting annulus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220665191 CN203056054U (en) | 2012-12-06 | 2012-12-06 | Double-trap-wave UWB filter with adjustable trap waves and adjustable pass-band |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220665191 CN203056054U (en) | 2012-12-06 | 2012-12-06 | Double-trap-wave UWB filter with adjustable trap waves and adjustable pass-band |
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| Publication Number | Publication Date |
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| CN203056054U true CN203056054U (en) | 2013-07-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201220665191 Expired - Fee Related CN203056054U (en) | 2012-12-06 | 2012-12-06 | Double-trap-wave UWB filter with adjustable trap waves and adjustable pass-band |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104934664A (en) * | 2015-07-06 | 2015-09-23 | 电子科技大学 | A high-selectivity submillimeter wave ultra wide band filter based on a vehicle-mounted radar system |
| CN106876844A (en) * | 2015-12-13 | 2017-06-20 | 哈尔滨飞羽科技有限公司 | Double trap bandpass filters based on open circuit minor matters and toroidal cavity resonator |
| CN106876842A (en) * | 2015-12-13 | 2017-06-20 | 哈尔滨飞羽科技有限公司 | Double trap bandpass filters of the single open circuit minor matters of toroidal cavity resonator loading |
| CN106876843A (en) * | 2015-12-13 | 2017-06-20 | 哈尔滨飞羽科技有限公司 | Double trap bandpass filters of the double open circuit minor matters of toroidal cavity resonator loading |
-
2012
- 2012-12-06 CN CN 201220665191 patent/CN203056054U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104934664A (en) * | 2015-07-06 | 2015-09-23 | 电子科技大学 | A high-selectivity submillimeter wave ultra wide band filter based on a vehicle-mounted radar system |
| CN106876844A (en) * | 2015-12-13 | 2017-06-20 | 哈尔滨飞羽科技有限公司 | Double trap bandpass filters based on open circuit minor matters and toroidal cavity resonator |
| CN106876842A (en) * | 2015-12-13 | 2017-06-20 | 哈尔滨飞羽科技有限公司 | Double trap bandpass filters of the single open circuit minor matters of toroidal cavity resonator loading |
| CN106876843A (en) * | 2015-12-13 | 2017-06-20 | 哈尔滨飞羽科技有限公司 | Double trap bandpass filters of the double open circuit minor matters of toroidal cavity resonator loading |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Yu Fengrong Inventor after: Li Ning Inventor after: Yu Renjie Inventor after: Su Chang Inventor after: Qin Juchao Inventor before: Yu Renjie Inventor before: Su Chang Inventor before: Qin Juchao |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: YU RENJIE SU CHANG QIN JUCHAO TO: YU FENGRONG LI NING YU RENJIE SU CHANG QIN JUCHAO |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130710 Termination date: 20151206 |
|
| EXPY | Termination of patent right or utility model |