CN104681994A - Ultra wideband antenna based on gradient step structure - Google Patents
Ultra wideband antenna based on gradient step structure Download PDFInfo
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- CN104681994A CN104681994A CN201310616444.3A CN201310616444A CN104681994A CN 104681994 A CN104681994 A CN 104681994A CN 201310616444 A CN201310616444 A CN 201310616444A CN 104681994 A CN104681994 A CN 104681994A
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- wideband antenna
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- ultra wideband
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Abstract
The invention discloses an ultra wideband antenna based on a gradient step structure. The ultra wideband antenna has band-notched characteristic in the WLAN (wireless local area network) frequency band. The ultra wideband antenna consists of a dielectric substrate (1), a radiation patch unit (2), a U-shaped structural slot (3), a micro-strip transmission line (4) and a grounding surface (5). The radiation unit, the micro-strip transmission line and the U-shaped structural slot are all printed on the upper surface of the dielectric substrate. The ultra wideband antenna based on the gradient step structure has the advantages that the structure is compact, the size is small, and the band-notched frequency can be adjusted by changing the size and position of the U-shaped structural slot, so that the problem of same frequency interference in an ultra wideband communication system is solved.
Description
Technical field
The present invention relates to a kind of antenna, a kind of ultra-wideband antenna based on gradation type terraced structure of specific design, and on this basis, realize the trap function in WLAN signal frequency range.
Background technology
Along with the develop rapidly of mobile communication, the requirement of communication system to the beamwidth of antenna is more and more higher.Since FCC (Federal Communications Commission) is since on February 14th, 2002 allows the commercialization of 3.1-10.6GHz frequency range, super-broadband tech obtains at academic and commercial field and broadly pays close attention to, higher requirement be it is also proposed to ultra-wideband antenna simultaneously, make it to have more challenge than the design of traditional antenna, be mainly manifested in: antenna is except needing to have the working band (being generally 3.1GHz-10.6GHz) of ultra-wide, also want to keep the compact of size, weight frivolous, and be easy to integrated with plane large-scale circuit.
But the frequency band shared by current ultra-wideband communications and WLAN (wireless local area network) have shared part, therefore need the antenna designed to reduce and bring interference to WLAN (wireless local area network), the ultra-wideband antenna that design has trap characteristic becomes the focus studied at present.If do not have suitable design to come harmonic inhabitation resonance and parasitic emission, antenna produces electromagnetic interference by neighbouring equipment, jeopardizes the normal work of system itself and contiguous system, particularly causes interference to the LAN system used at present.Add the method that filter is the solution problems the most often used, but often cause antenna and microwave circuit not to mate, even reduce the overall efficiency of system, therefore design has the ultra-wideband antenna based on gradation type terraced structure of trap characteristic is one of common method of head it off, solves the problem of the Structure and energy more complicated of current antenna simultaneously.
Summary of the invention
The object of this invention is to provide a kind of structure simple, compact, the gradation type ultra-wideband antenna with trap characteristic of broader bandwidth, bandwidth range is at 2.03 ~ 15.1GHz, impedance bandwidth reaches 174%, complete covering ultra wideband frequency range, and by loading U-lag on this basis, realize trap function in WLAN frequency range, reduce the interference of WLAN signal.This antenna can be used in the military equipments such as electronics investigation, electronic countermeasures and civil equipment.
Technical solutions according to the invention are:
Based on the ultra-wideband antenna of gradation type terraced structure, it is characterized in that: comprise medium substrate, radiation patch unit, U-shaped structure grooves, microstrip transmission line, ground plane.Described radiating element, microstrip transmission line, U-shaped structure grooves are all printed on medium substrate upper surface, and described ground plane is printed on the back side of medium substrate.
The described ultra-wideband antenna based on gradation type terraced structure, is characterized in that: radiating element is gradation type trapezium structure.
The described ultra-wideband antenna based on gradation type terraced structure, is characterized in that: radiating element paster is opened U-shaped structure grooves.
Concrete structure:
(1) radiation patch unit of the present invention adopts gradation type terraced structure Bandwidth.
(2) of the present inventionly on radiating element, carve U-shaped structure grooves, by regulating the position of the concrete adjusted size trap frequency of U-shaped structure grooves, thus realize ultra-wideband communications and disturb compatible communication for coordination between communication system mutually.
(3) inventive antenna is specifically of a size of Ws=30mm, Ls=35mm, Wp=15mm, Lp=14.5mm, d
1=12.5mm, Lg=11.3mm, step1=1.5 × 12mm
2, step2=1 × 9mm
2, W
1=3.5mm, h=1.6mm, s=0.5mm, Lt=3mm, Wt=12mm, h1=7.5mm.Single layer printed circuit plate technique can realize, simple and compact for structure, compact, and easy to process, cost is low, is convenient to batch production.
Accompanying drawing explanation
Fig. 1 is front elevation of the present invention;
Fig. 2 is side view of the present invention;
Fig. 3 is dimensional drawing of the present invention;
Fig. 4 is S parameter analogous diagram of the present invention;
Fig. 5 is standing-wave ratio analogous diagram of the present invention;
Fig. 6 is of the present invention in WLAN frequency range standing-wave ratio analogous diagram;
Embodiment
Antenna example:
As shown in Figure 1, have the ultra-wideband antenna based on gradation type terraced structure of trap characteristic, its composition comprises: medium substrate (1), radiation patch unit (2), U-shaped structure grooves (3), microstrip transmission line (4), ground plane (5).Described radiating element, microstrip transmission line, U-shaped structure grooves are all printed on medium substrate upper surface, and described ground plane is printed on the back side of medium substrate.Concrete size: Ws=30mm, Ls=35mm, Wp=15mm, Lp=14.5mm, d
1=12.5mm, Lg=11.3mm, step1=1.5 × 12mm
2, step2=1 × 9mm
2, W
1=3.5mm, h=1.6mm, s=0.5mm, Lt=3mm, Wt=12mm, h1=7.5mm.
Described medium substrate is polytetrafluoroethylene material, thickness 1.6mm, and relative dielectric constant is 2.55.
Described radiating element has gradation type terraced structure, realizes the ultra broadband characteristic of antenna.
Described microstrip transmission line characteristic impedance 50 Ω, live width 3.5mm, realizes good impedance matching.
Ultra-wideband antenna based on gradation type terraced structure has good trap characteristic.Can find out in figure 3, the bandwidth range of this antenna is 2.03 ~ 15.1GHz, reach the requirement of ultra-wideband antenna bandwidth, complete covering ultra wideband antenna frequencies scope, and in Fig. 4, also can find out that antenna standing wave ratio is less than or equal to the impedance bandwidth 2.03 ~ 15.1GHz of 2, meets the demand of ultra-wideband communications.According to the U-lag structure loaded, trap characteristic is realized in impedance bandwidth range, its standing-wave ratio figure as shown in Figure 5, visible within the scope of 5.11 ~ 5.98GHz value be greater than 2, there is larger reflected wave, frequency range just in time covers WLAN signal frequency band, namely reflection should be formed by the capable structure grooves of U loaded in WLAN signal frequency range, effectively can suppress the interference of WLAN frequency band signals, well eliminate or reduce ultra-wideband antenna to the interference of electromagnetism, realizing good communication requirement.
Claims (4)
1. based on the ultra-wideband antenna of gradation type terraced structure, it is characterized in that: comprise medium substrate, radiating element, microstrip transmission line, U-shaped structure grooves, ground plane, described radiating element, microstrip transmission line, U-shaped structure grooves are all printed on medium substrate upper surface, and described ground plane is printed on the back side of medium substrate.
2. the ultra-wideband antenna based on gradation type terraced structure according to claim 1, is characterized in that: radiating element is gradation type terraced structure.
3. the ultra-wideband antenna based on gradation type terraced structure according to claim 1,2, is characterized in that: radiating element paster is opened U-shaped structure grooves.
4. the ultra-wideband antenna based on gradation type terraced structure according to claim 1,2,3, is characterized in that: concrete size: Ws=30mm, Ls=35mm, Wp=15mm, Lp=14.5mm, d
1=12.5mm, Lg=11.3mm, step1=1.5 × 12mm
2, step2=1 × 9mm
2, W
1=3.5mm, h=1.6mm, s=0.5mm, Lt=3mm, Wt=12mm, h1=7.5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310616444.3A CN104681994A (en) | 2013-11-27 | 2013-11-27 | Ultra wideband antenna based on gradient step structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310616444.3A CN104681994A (en) | 2013-11-27 | 2013-11-27 | Ultra wideband antenna based on gradient step structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104681994A true CN104681994A (en) | 2015-06-03 |
Family
ID=53316755
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310616444.3A Pending CN104681994A (en) | 2013-11-27 | 2013-11-27 | Ultra wideband antenna based on gradient step structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104681994A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106450728A (en) * | 2016-10-14 | 2017-02-22 | 天津大学 | Flexible wearable dual-band monopole antenna based on PDMS material |
| CN111541008A (en) * | 2020-05-15 | 2020-08-14 | 东华大学 | Ultra-wideband antenna with double-trapped wave characteristic |
-
2013
- 2013-11-27 CN CN201310616444.3A patent/CN104681994A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106450728A (en) * | 2016-10-14 | 2017-02-22 | 天津大学 | Flexible wearable dual-band monopole antenna based on PDMS material |
| CN106450728B (en) * | 2016-10-14 | 2018-07-03 | 天津大学 | A kind of flexible wearable Dual-band monopole antenna based on PDMS material |
| CN111541008A (en) * | 2020-05-15 | 2020-08-14 | 东华大学 | Ultra-wideband antenna with double-trapped wave characteristic |
| CN111541008B (en) * | 2020-05-15 | 2022-01-11 | 东华大学 | Ultra-wideband antenna with double-trapped wave characteristic |
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Legal Events
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150603 |