CN201247814Y - Ultra wideband communication antenna with five rejection bands - Google Patents
Ultra wideband communication antenna with five rejection bands Download PDFInfo
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- CN201247814Y CN201247814Y CNU2008200378941U CN200820037894U CN201247814Y CN 201247814 Y CN201247814 Y CN 201247814Y CN U2008200378941 U CNU2008200378941 U CN U2008200378941U CN 200820037894 U CN200820037894 U CN 200820037894U CN 201247814 Y CN201247814 Y CN 201247814Y
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Abstract
The utility model relates to an ultra-wide band communication antenna with five stop bands, which is an ultra-wide band communication antenna with multiple stop bands and has the effect of barrage jamming on multiple frequency band signals. A radiation unit (4) of the antenna is designed to be semicircular so as to reduce the overall dimension of the antenna, metal regions (2) are not distributed on the back of a circular disc, and the unit form has the ultra-wide band characteristic; a feeder line (5) is in the shape of a microstrip line and is provided with an L-shaped right turn angle (6), and a part of the feeder line, which is connected with the radiation unit (4) of the antenna, is provided with a transition line (7) so as to improve the impedance matching performance; a first double-module stepped impedance resonator (8), a second double-module stepped impedance resonator (9), a third double-module stepped impedance resonator (10) and a split ring resonator (11) are respectively distributed on both sides of the feeder line (5) and are respectively coupled with the feeder line so as to form a filter with multiple stop bands; and the grounded parts of the first double-module stepped impedance resonator, the second double-module stepped impedance resonator and the third double-module stepped impedance resonator are realized by adopting metal through holes (12).
Description
Technical field
The utility model is a kind ofly can restrain the multi-attenuation band ultra-wideband that a plurality of band signals disturb (Ultra-Wideband, UWB) communication antenna belong to the comprehensive Design technical field that communication antenna is made.
Background technology
Ultra-wideband communication system has advantages such as big bandwidth, high data rate, low cost, is paid close attention to widely in recent years and uses.Meanwhile, the development of various wireless communication systems and application make existing band resource become more and more nervous, the following frequency range of 10GHz particularly, a large amount of different types of communication services of crowding.For example, UMTS/WCDMA, GPS, WLAN, WiMAX and FBWA etc.There are overlap problem in the working band and the ultra-wideband communication system of these systems, therefore all may become potential interference source.Disturb for fear of these potential signals, protect the operate as normal of each communication system simultaneously, can have the antenna realization of stopband characteristic by design.This antenna can be operated in very wide frequency band, the feeder line structure that has filtering characteristic simultaneously can make antenna have very big standing wave ratio of input voltage on specific frequency, promptly present and end for the signal antenna of corresponding frequencies, idle state reduces even eliminates the effect of mutual interference mutually between radio ultra wide band system and other communication systems thereby play.Existing stopband antenna mostly has single stopband, can not the signal of a plurality of frequencies be suppressed; Perhaps, the antenna bandwidth of operation with two stopbands is affected and reduces, and does not satisfy the ultra broadband characteristic.Therefore, design a kind of many stopbands that have, the miniaturization antenna feeder of ultra broadband bandwidth of operation becomes problem demanding prompt solution.
On the other hand, the stepped impedance resonance line with bimodulus characteristic has little and preceding two resonance frequencys of volume controlled character separately, can be used to design the filter of many stopbands.Splitting ring resonator with zeroth order resonance characteristic has the small and exquisite and spurious resonance spacing characteristic far away of volume simultaneously.Therefore, utilize these two kinds of many stop-band filters of resonator design simultaneously unwanted parasitic stopband to be controlled so that the antenna overall volume is less.Therefore utilize these two kinds of resonators can design the stopband that to coordinate.
Summary of the invention
Technical problem: the purpose of this utility model is to propose a kind of ultra-wideband communications antenna with five stopbands, not only has the ultra broadband characteristic, and for the interference signal of a plurality of frequencies the good restraining effect is arranged.That this antenna has is simple in structure, volume is small and exquisite, satisfies the integrated requirement of planar circuit, and have cost low, be convenient to advantage such as batch process, therefore be applicable to multiple jamproof ultra wideband applications occasion.
Technical scheme: designed antenna comprises semiellipse dish antenna and bimodulus step electric impedance resonator, zeroth order splitting ring resonator coupling feed structure two parts, has ultra broadband bandwidth of operation (1-6.05GHz).Simultaneously, be coupled, constitute filter,, just can form ultra-wideband antenna with many stopband characteristics with this filter and disk aerial cascade with a plurality of stopbands by two kinds of resonators and feeder line.This Antenna Design utilizes the microwave-medium substrate to realize based on the plane electric circuit technology, adopts feed microstrip line, and volume is small and exquisite, and it is integrated to be fit to level.Simultaneously, bimodulus step electric impedance resonator and zeroth order splitting ring resonator have ripe design formula, therefore, and design processes simplified greatly in many stopbands Antenna Design.
The ultra-wideband communications antenna that the utlity model has five stopbands adopts following technical scheme: this antenna comprises a dielectric substrate and the lower surface coat of metal that covers in the dielectric substrate upper and lower surface, the upper surface coat of metal; The lower surface coat of metal is the ground of feeder line part, has adopted the design of isosceles trapezoid, to satisfy the impedance matching demand between feeder line and the antenna radiation unit; The upper surface coat of metal has comprised following a few part: antenna radiation unit, feeder line, the first bimodulus step electric impedance resonator, the second bimodulus step electric impedance resonator, the 3rd bimodulus step electric impedance resonator, zeroth order splitting ring resonator, wherein, antenna radiation unit adopts semicircle to reduce the overall dimensions of antenna, disk does not have metal ground behind and distributes, and this unit form has the ultra broadband characteristic; Feeder line is the microstrip line form, and has adopted the straight corner of L type, has also adopted transition line to improve the impedance matching performance with the antenna radiation unit joining part; The first bimodulus step electric impedance resonator, the second bimodulus step electric impedance resonator, the 3rd bimodulus step electric impedance resonator and splitting ring resonator are arranged in the feeder line both sides respectively and are coupled with it and constitute many stop-band filters; The grounded part of the first bimodulus step electric impedance resonator, the second bimodulus step electric impedance resonator, the 3rd bimodulus step electric impedance resonator has adopted the metal throuth hole realization.
Each bimodulus step electric impedance resonator is by two sections microstrip lines with different characteristic impedance and electrical length formation that links to each other, end open circuit, other end short circuit.Short-circuit end is realized by metal throuth hole ground connection.All step electric impedance resonators and all parallel coupling of splitting ring resonator with feeder line.
The stopband characteristic that characteristic impedance by regulating each section of step electric impedance resonator and electrical length can realize several different frequencies; Also can realize a single stopband characteristic by the physical size of regulating the splitting ring resonator.The stopband that combination is produced by several resonators can be so that the antenna general performance goes out five stopband characteristics.
Beneficial effect: the utlity model has following advantage:
1. antenna has ultra broadband characteristic (1-6.05GHz), can satisfy the ultra-wideband communication system requirement; Simultaneously, antenna can produce the stopband of five frequencies, has anti-multifrequency point jamming performance.
2. the frequency of antenna stopband can utilize bimodulus step electric impedance resonator and zeroth order splitting ring resonator design formula to calculate the physical dimension of resonator, therefore has the stopband adjustability, therefore can satisfy the application of some interfering frequency special occasions.
3. the bimodulus step electric impedance resonator is compared with traditional resonance structure with zeroth order splitting ring resonator and is had the little characteristics of volume.Therefore, utilizing the antenna of these two kinds of resonator design is miniaturizations.Simultaneously, antenna adopts microstrip line as feeder line, can make things convenient for the microwave planar circuit height integratedly, is fit to mobile compact apparatus and uses.
4. the each several part of entire antenna becomes one, and is simple in structure, all utilizes the PCB explained hereafter, and cost is low, precision is high, good reproducibility, is fit to produce in enormous quantities.
Description of drawings
Fig. 1 is the structural representation with ultra-wideband communications antenna of five stopbands, and wherein Fig. 1 a is the Facad structure schematic diagram, and Fig. 1 b is the side structure schematic diagram.
Fig. 2 is insertion loss (Return Loss) measurement result of embodiment 1.
Fig. 3 is standing wave ratio of input voltage (VSWR) measurement result of embodiment 1.
The lower surface coat of metal 2, the upper surface coat of metal 3, antenna radiation unit 4, feeder line part 5, L type coupling part 6, transition line 7, the first bimodulus step electric impedance resonators 8, the second bimodulus step electric impedance resonator 9, the 3rd bimodulus step electric impedance resonator 10, zeroth order splitting ring resonator 11, metal throuth hole 12.
Embodiment
The antenna that the utility model proposed is made of the radiating element of semiellipse form and the many stop-band filters that are made of bimodulus step electric impedance resonator and zeroth order splitting ring resonator.The ultra broadband characteristic of antenna depends on the form of radiating element and the impedance matching of feeder line and radiating element.Therefore, there have various ways to have a radiating element of ultra broadband characteristic to be available, and common has: rectangle circle, ellipse, half elliptic etc.Impedance matching between radiating element and the feeder line can realize by gradual change feeder line or gradual change metal ground form.On the other hand, many stopband characteristics of antenna are then realized by bimodulus step electric impedance resonator and zeroth order splitting ring resonator coupling feed structure.The frequency of stopband can change by the adjusting to bimodulus step electric impedance resonator and zeroth order splitting ring resonator physical size, and has the ripe design formula can be for reference, and this just makes design work greatly simplify.The radiating element that will have a ultra broadband characteristic combines with above-mentioned many stop-band filters all can realize multi-attenuation band ultra-wideband aerial.In addition, bimodulus step electric impedance resonator and zeroth order splitting ring resonator all have the little characteristics of volume, and the structure of both and feeder line coupling can carry out adjustment on shape and the layout according to the design needs, to satisfy the requirement of circuit miniaturization and compact layout.
Ultra-wideband communications antenna with five stopbands comprises a dielectric substrate 1 and the lower surface coat of metal 2 that covers in dielectric substrate 1 upper and lower surface, the upper surface coat of metal 3; The lower surface coat of metal 2 is the ground of feeder line part, has adopted the design of isosceles trapezoid, to satisfy the impedance matching demand between feeder line 5 and the antenna radiation unit 4; The upper surface coat of metal 3 has comprised following a few part: antenna radiation unit 4, feeder line 5, the first bimodulus step electric impedance resonator 8, the second bimodulus step electric impedance resonator 9, the 3rd bimodulus step electric impedance resonator 10, zeroth order splitting ring resonator 11, wherein, antenna radiation unit 4 adopts semicircle to reduce the overall dimensions of antenna, disk does not have metal ground behind and distributes, and this unit form has the ultra broadband characteristic; Feeder line 5 is the microstrip line form, and has adopted the straight corner 6 of L type, has also adopted transition line 7 to improve the impedance matching performance with antenna radiation unit 4 joining parts; The first bimodulus step electric impedance resonator 8, the second bimodulus step electric impedance resonator 9, the 3rd bimodulus step electric impedance resonator 10 and splitting ring resonator 11 are arranged in feeder line 5 both sides respectively and are coupled with it and constitute many stop-band filters; The grounded part of the first bimodulus step electric impedance resonator 8, the second bimodulus step electric impedance resonator 9, the 3rd bimodulus step electric impedance resonator 10 has adopted metal throuth hole 12 to realize.
Antenna structure as shown in Figure 1, dimensional units is mm.The sizes of substrate of this embodiment is 150 * 104.2 * 1.What the antenna of actual measurement inserted loss (Return Loss) and standing wave ratio of input voltage (VSWR) the results are shown in Fig. 2 and Fig. 3.
Designed antenna example comprises half elliptic antenna and many stop-band filters two parts.Wherein many stop-band filters are by the realization that is coupled of a plurality of bimodulus step electric impedance resonators (Stepped Impedance Resonators SIRs) and a zeroth order splitting ring resonator (Split Ring Resonators SRRs) and feeder line.Antenna have the ultra-wideband antenna bandwidth of operation (1-6.05GHz) and five stopbands (1.28-1.39,1.51-1.61,2.99-3.11,4.02-4.35,4.88-5.16GHz).
Claims (1)
1. the ultra-wideband communications antenna with five stopbands is characterized in that this antenna comprises a dielectric substrate (1) and the lower surface coat of metal (2) that covers in dielectric substrate (1) upper and lower surface, the upper surface coat of metal (3); The lower surface coat of metal (2) is the ground of feeder line part, adopted the design of isosceles trapezoid, the upper surface coat of metal (3) has comprised following a few part: antenna radiation unit (4), feeder line (5), the first bimodulus step electric impedance resonator (8), the second bimodulus step electric impedance resonator (9), the 3rd bimodulus step electric impedance resonator (10), zeroth order splitting ring resonator (11), wherein, antenna radiation unit (4) adopts semicircle to reduce the overall dimensions of antenna, and this unit form has the ultra broadband characteristic; Feeder line (5) is the microstrip line form, and has adopted the straight corner (6) of L type, has also adopted transition line (7) with antenna radiation unit (4) joining part; The first bimodulus step electric impedance resonator (8), the second bimodulus step electric impedance resonator (9), the 3rd bimodulus step electric impedance resonator (10) and splitting ring resonator (11) are arranged in feeder line (5) both sides respectively and are coupled with it and constitute many stop-band filters; The grounded part of the first bimodulus step electric impedance resonator (8), the second bimodulus step electric impedance resonator (9), the 3rd bimodulus step electric impedance resonator (10) has adopted metal throuth hole (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200378941U CN201247814Y (en) | 2008-06-24 | 2008-06-24 | Ultra wideband communication antenna with five rejection bands |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200378941U CN201247814Y (en) | 2008-06-24 | 2008-06-24 | Ultra wideband communication antenna with five rejection bands |
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| Publication Number | Publication Date |
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| CN201247814Y true CN201247814Y (en) | 2009-05-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNU2008200378941U Expired - Fee Related CN201247814Y (en) | 2008-06-24 | 2008-06-24 | Ultra wideband communication antenna with five rejection bands |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102447150A (en) * | 2010-10-12 | 2012-05-09 | 环旭电子股份有限公司 | Multifrequency band-pass filter |
| CN102751553A (en) * | 2012-06-05 | 2012-10-24 | 北京航空航天大学 | Small four-stop-band filter |
-
2008
- 2008-06-24 CN CNU2008200378941U patent/CN201247814Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102447150A (en) * | 2010-10-12 | 2012-05-09 | 环旭电子股份有限公司 | Multifrequency band-pass filter |
| CN102751553A (en) * | 2012-06-05 | 2012-10-24 | 北京航空航天大学 | Small four-stop-band filter |
| CN102751553B (en) * | 2012-06-05 | 2014-06-04 | 北京航空航天大学 | Small four-stop-band filter |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090527 Termination date: 20160624 |
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| CF01 | Termination of patent right due to non-payment of annual fee |