CN201188454Y - Implementation of multi-frequency interference resistance ultra-wideband antenna using double frequency characteristics of ladder impedance resonator - Google Patents
Implementation of multi-frequency interference resistance ultra-wideband antenna using double frequency characteristics of ladder impedance resonator Download PDFInfo
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- CN201188454Y CN201188454Y CNU2008200319267U CN200820031926U CN201188454Y CN 201188454 Y CN201188454 Y CN 201188454Y CN U2008200319267 U CNU2008200319267 U CN U2008200319267U CN 200820031926 U CN200820031926 U CN 200820031926U CN 201188454 Y CN201188454 Y CN 201188454Y
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Abstract
The utility model relates to an ultra-wideband antenna capable of resisting multi-frequency interference by utilizing the dual-frequency characteristics of a stepped impedance resonator, which adopts a technology for comprehensively designing the ultra-wideband antenna which has the ultra-wideband working characteristics and can restrain multi-frequency signal interference. The designed antenna comprises two parts, namely, a disc antenna and coupling feeding line structures of the two-segment stepped impedance resonator and has the working bandwidth (1.7 GHz to 10.3 GHz) of the ultra-wideband antenna. The antenna comprises a dielectric substrate (1) and two metal coatings; the two metal coatings are respectively covered on the upper surface and the lower surface of the dielectric substrate (1); the metal coating (2) on the lower surface is the metal ground of a feeding line part (5); the metal coating (3) on the upper surface comprises an antenna radiation unit (4), the feeding line part (5) and a multi-bandstop filter (7).
Description
Technical field
The utility model is a kind ofly to have the ultra broadband operating characteristic and disturb ultra broadband (Ultra-Wideband, UWB) technology of antenna synthesis design that can restrain for multifrequency signal.Designed antenna comprises disk aerial and two sections step electric impedance resonators (Stepped Impedance Resonators SIRs) coupling feed structure two parts, has ultra-wideband antenna bandwidth of operation (1.7GHz-10.3GHz).
Background technology
Ultra-wideband communication system has high data rate, and low cost etc. are many a bit, become the main flow that indoor short-range communication is used gradually.Yet current various wireless communication system fast development makes bandwidth resources more and more nervous.The phenomenon that a large amount of different types of communication services tie up same frequency range is more and more general.Accordingly, because ultra-wideband communication system has almost occupied the following all bandwidth of 11GHz (for example the UWB frequency band of U.S. FCC identification is 3.1GHz-10.6GHz), the overlap problem that just has special frequency channel between while and other a plurality of wireless systems, for example: the 2.4/5.8GHz band system of the wireless local area WLAN that IEEE formulates and the 3.5GHz/5.8GHz band system of WiMAX.These systems will form interference mutually with radio ultra wide band system.Disturb for fear of these potential signals, protect the operate as normal of each communication system simultaneously, can be by in communication system, adding the antenna realization that corresponding stop-band filter or design have stopband characteristic.In ultra-wideband antenna design, the design of many stop-band filters and antenna synthesis one can be constituted the monolithic antenna transmission system with stopband characteristic.This antenna is except just having very wide bandwidth, and its feeder line structure with filtering characteristic makes antenna produce very big standing wave ratio of input voltage on specific frequency.Promptly for the signal of corresponding frequencies, antenna presents and ends, and idle state reduces even eliminates the effect of mutual interference mutually between radio ultra wide band system and other communication systems thereby play.At present, 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, two sections stage type step electric impedance resonance lines have little and preceding two resonance frequencys of volume controlled character separately, are easy to realize the design of many stop-band filters by two stepped impedance lines.
Summary of the invention
Technical problem: the purpose of this utility model is to propose a kind of step electric impedance resonator dual frequency characteristics of utilizing that realizes based on plane electric circuit technology to realize the ultra-wideband antenna that anti-multifrequency is disturbed, not only have the ultra broadband characteristic, and the good restraining effect is arranged for the interference signal of a plurality of frequencies.That this antenna has is simple in structure, volume is small and exquisite, satisfies the integrated requirement of planar circuit, and has low, the easy processing of cost, is convenient to advantages such as batch process, therefore is applicable to multiple jamproof ultra wideband applications occasion.
Technical scheme: designed antenna comprises disk aerial and many stop-band filters two parts.Its median filter is coupled by two two stage type step electric impedance resonators and feeder and constitutes.This antenna not only has ultra broadband bandwidth of operation (1.7GHz-10.3GHz), simultaneously, partly produces a plurality of stopbands by the two stage type step electric impedance resonator coupling feed, thereby makes the antenna general performance go out to have the ultra wideband of many stopband characteristics.This Antenna Design adopts feed microstrip line based on the plane electric circuit technology, and volume is small and exquisite, and it is integrated to be fit to level.
Ultra-wideband antenna of the present utility model comprises feeder line two parts of disk aerial and two stage type step electric impedance resonator coupled microstrip line formation, realizes at the microwave-medium substrate by printed-board technology.Two stage type step electric impedance resonator coupling microstrip line structure can produce the stopband of a plurality of specific frequencies.Simultaneously, two stage type step electric impedance resonator has ripe design formula, makes that the design process of many stopbands antenna is simple and efficient.
The utility model adopts following technical scheme:
This antenna comprises a dielectric substrate and the double layer of metal coating that covers in the dielectric substrate upper and lower surface; The lower surface coat of metal is the metal ground of feeder line part, and the upper surface coat of metal includes antenna radiation unit, feeder line and several parts of many band stop filters; Wherein, antenna radiation unit adopts disc format, and disk does not have metal ground behind and distributes, and this form radiating element has the ultra broadband characteristic; Feeder line partly adopts the microstrip line form, and feeder line partly with between the antenna radiation unit is connected many band stop filters, trapezoidal impedance conversion line, and wherein trapezoidal impedance conversion line carries out impedance matching and connects.
Many band stop filters are made of two stage type step electric resonator coupling microstrip feeder line, and first resonator in the two stage type step electric resonator is made of two sections first microstrip line, second microstrip lines with different characteristic impedance and electrical length; Second resonator is made of two sections the 3rd microstrip line, the 4th microstrip lines with different impedances and electrical length; Wherein, second microstrip line, the 3rd microstrip line are parallel with microstrip feed line, realize that the resonator and the part of microstrip line feeder line are coupled; First microstrip line and the 4th microstrip line join by metal throuth hole and metal ground, realize short-circuiting effect.
Microstrip feed line can adopt straight corner design, to reduce the overall volume of antenna.All become vertical distribution between first microstrip line and second microstrip line, the 3rd microstrip line and the 4th microstrip line, constitute the L type; Or first microstrip line and second microstrip line be coaxial distribution.The stopband characteristic that impedance by regulating each each section of resonator and electrical length can realize a plurality of different frequencies.Therefore, this whole antenna feeder line structure just reaches into the ultra-wideband antenna with many stopband characteristics.
Beneficial effect: the utlity model has following advantage:
1. antenna has the ultra broadband characteristic, can satisfy the ultra-wideband communication system requirement; Simultaneously, antenna can produce the stopband of three or four frequencies, has anti-multifrequency point jamming performance.
2. can utilize the two stage type step electric impedance resonator design formula to calculate the physical dimension of resonator according to the antenna stop-band frequency of required design.Therefore this antenna has the stopband adjustability, can satisfy the application of some interfering frequency special occasions, and design process is simple and efficient.
3. two stage type step electric impedance resonator has preceding two resonance frequency tunable characteristics, and a corresponding resonator just can produce two controlled stopbands.Therefore, can produce many stopbands, be adapted to many interference signals occasion by adding two stage type step electric impedance resonator.
4. resonator itself has the small and exquisite characteristics of volume, and can serpentine pattern, realizes miniaturization Design.Therefore, the antenna overall volume is small and exquisite.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.
5. 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 two stage type step electric impedance resonator coupling feed realizes multi-attenuation band ultra-wideband aerial, type i, and the structure front schematic view of embodiment 1 and 2, and Fig. 2 is a side schematic view.
The standing wave ratio of input voltage of Fig. 3 embodiment 1 (VSWR) measurement result (solid line is a test result, and dotted line is a simulation result).
Fig. 4 is the XOZ plane pattern of embodiment 1, and 4 curves are 2,3,5 respectively, the test result during 8GHz.
Fig. 5 is the YOZ plane pattern of embodiment 1, and 4 curves are 2,3,5 respectively, the test result during 8GHz.
The standing wave ratio of input voltage of Fig. 6 embodiment 2 (VSWR) measurement result (solid line is a test result, and dotted line is a simulation result).
Fig. 7 two stage type step electric impedance resonator coupling feed realizes multi-attenuation band ultra-wideband aerial, Type II, and embodiment front schematic view, and Fig. 8 is a side schematic view.
The standing wave ratio of input voltage of Fig. 9 embodiment 3 (VSWR) measurement result (solid line is a test result, and dotted line is a simulation result).
Have among the above figure: dielectric substrate 1, the lower surface coat of metal 2, the upper surface coat of metal 3, antenna radiation unit 4, feeder line part 5 (containing trapezoidal impedance conversion line 6), many stop-band filters 7 (containing two stage type step electric impedance resonator 7a and 7b), 7a contains microstrip line 8 and 9,7b contains microstrip line 10 and 11, all grounded metal holes 12.
Embodiment
Utilize the step electric impedance resonator dual frequency characteristics to realize the ultra-wideband antenna that anti-multifrequency is disturbed, comprise a dielectric substrate 1 and the double layer of metal coating that covers in dielectric substrate 1 upper and lower surface; The lower surface coat of metal 2 is the metal ground of feeder line part 5, and the upper surface coat of metal 3 includes antenna radiation unit 4, feeder line 5 and many band stop filters more than 7 parts; Wherein, antenna radiation unit 4 adopts disc format, and disk does not have metal ground 2 behind and distributes, and this form radiating element has the ultra broadband characteristic; Feeder line part 5 adopts the microstrip line forms, is connected many band stop filters 7 (containing its 7a of two stage type step electric impedance resonance and 7b), trapezoidal impedance conversion line 6 between feeder line part 5 and the antenna radiation unit 4, and wherein trapezoidal impedance conversion line 6 carries out the impedance matching connection.Step electric impedance resonator 7a contains microstrip line 8 and 9, and 7b contains microstrip line 10 and 11, and microstrip line 8 and 11 is by metal aperture 12 ground connection.
Antenna structure as shown in Figure 1, dimensional units is mm.The sizes of substrate of this embodiment is 46 * 77.5 * 1.The directional diagram of actual measurement standing wave ratio of input voltage (VSWR) and XOZ, two primary flats of YOZ the results are shown in Fig. 2～Fig. 4.
Antenna structure as shown in Figure 1, dimensional units is mm.The sizes of substrate of this embodiment is 46 * 77.5 * 1.The basic structure of the design's example still has different resonator structure parameters with embodiment 1.Promptly the filter that is made of step electric impedance resonator has different band resistance characteristics.This example can be realized the ultra-wideband antenna of four stopband characteristics.Actual measurement antenna standing wave ratio of input voltage (VSWR) the results are shown in Fig. 6.
Antenna structure as shown in Figure 7, dimensional units is mm.The sizes of substrate of this embodiment is 46 * 77.5 * 1.The design's example different is that microstrip feed line has been carried out corner design with embodiment 1, corresponding, the resonator structure parameter is also slightly different.But this example can be realized the ultra-wideband antenna of three stopband characteristics equally. Embodiment 1 and 3 makes can select antenna structure in the practical application as required flexibly.Actual measurement antenna standing wave ratio of input voltage (VSWR) the results are shown in Fig. 9.
Claims (4)
1. one kind is utilized the step electric impedance resonator dual frequency characteristics to realize anti-multifrequency interference ultra-wideband antenna, it is characterized in that this antenna comprises a dielectric substrate (1) and the double layer of metal coating that covers in dielectric substrate (1) upper and lower surface; The lower surface coat of metal (2) is the metal ground of feeder line part (5), and the upper surface coat of metal (3) includes antenna radiation unit (4), feeder line (5) and several parts of many band stop filters (7); Wherein, antenna radiation unit (4) adopts disc format, and disk does not have metal ground (2) behind and distributes, and this form radiating element has the ultra broadband characteristic; Feeder line part (5) adopts the microstrip line form, is connected many band stop filters (7), trapezoidal impedance conversion line (6) between feeder line part (5) and the antenna radiation unit (4), and wherein trapezoidal impedance conversion line (6) carries out the impedance matching connection.
2. the step electric impedance resonator dual frequency characteristics of utilizing according to claim 1 realizes anti-multifrequency interference ultra-wideband antenna, it is characterized in that many band stop filters (7) are made of two stage type step electric resonator coupling microstrip feeder line, first resonator (7a) in the two stage type step electric resonator is made of two sections first microstrip line (8), second microstrip lines (9) with different characteristic impedance and electrical length; Second resonator (7b) is made of two sections the 3rd microstrip line (10), the 4th microstrip lines (11) with different impedances and electrical length; Wherein, second microstrip line (9), the 3rd microstrip line (10) are parallel with microstrip feed line (5), realize that the resonator and the part of microstrip line feeder line (5) are coupled; First microstrip line (8) and the 4th microstrip line (11) join by metal throuth hole (12) and metal ground (2), realize short-circuiting effect.
3. the step electric impedance resonator dual frequency characteristics of utilizing according to claim 1 realizes anti-multifrequency interference ultra-wideband antenna, it is characterized in that microstrip feed line (5) can adopt straight corner design, to reduce the overall volume of antenna.
4. the step electric impedance resonator dual frequency characteristics of utilizing according to claim 1 realizes anti-multifrequency interference ultra-wideband antenna, it is characterized in that first microstrip line (8) and second microstrip line (9), all become vertical distribution between the 3rd microstrip line (10) and the 4th microstrip line (11), constitute the L type; Or first microstrip line (8) and second microstrip line (9) be coaxial distribution.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200319267U CN201188454Y (en) | 2008-03-04 | 2008-03-04 | Implementation of multi-frequency interference resistance ultra-wideband antenna using double frequency characteristics of ladder impedance resonator |
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| CNU2008200319267U CN201188454Y (en) | 2008-03-04 | 2008-03-04 | Implementation of multi-frequency interference resistance ultra-wideband antenna using double frequency characteristics of ladder impedance resonator |
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| CN201188454Y true CN201188454Y (en) | 2009-01-28 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101697380A (en) * | 2009-10-09 | 2010-04-21 | 清华大学 | Dual-polarized built-in slot antenna used for mobile terminal of wireless local area network |
| CN102097680A (en) * | 2011-01-15 | 2011-06-15 | 广东通宇通讯股份有限公司 | Single-point feed double frequency hybrid antenna |
| CN105406186A (en) * | 2015-12-15 | 2016-03-16 | 华南理工大学 | Broadband circularly polarized microstrip antenna with low axial ratio property |
| CN109980353A (en) * | 2019-03-13 | 2019-07-05 | 东莞理工学院 | More notch multi-band ultra wideband flat plane antennas |
-
2008
- 2008-03-04 CN CNU2008200319267U patent/CN201188454Y/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101697380A (en) * | 2009-10-09 | 2010-04-21 | 清华大学 | Dual-polarized built-in slot antenna used for mobile terminal of wireless local area network |
| CN102097680A (en) * | 2011-01-15 | 2011-06-15 | 广东通宇通讯股份有限公司 | Single-point feed double frequency hybrid antenna |
| CN105406186A (en) * | 2015-12-15 | 2016-03-16 | 华南理工大学 | Broadband circularly polarized microstrip antenna with low axial ratio property |
| CN105406186B (en) * | 2015-12-15 | 2018-06-22 | 华南理工大学 | Broadband Circular Polarization Microstrip Antenna with low axis ratio characteristic |
| CN109980353A (en) * | 2019-03-13 | 2019-07-05 | 东莞理工学院 | More notch multi-band ultra wideband flat plane antennas |
| CN109980353B (en) * | 2019-03-13 | 2023-10-13 | 东莞理工学院 | Multi-notch frequency band ultra-wideband planar antenna |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20090128 Effective date of abandoning: 20080304 |