CN104681943A - Ultra-broadband antenna with notched characteristic - Google Patents
Ultra-broadband antenna with notched characteristic Download PDFInfo
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- CN104681943A CN104681943A CN201310617316.0A CN201310617316A CN104681943A CN 104681943 A CN104681943 A CN 104681943A CN 201310617316 A CN201310617316 A CN 201310617316A CN 104681943 A CN104681943 A CN 104681943A
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- radiating element
- ultra
- ground plane
- coplanar waveguide
- planar waveguide
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Abstract
The invention discloses an ultra-broadband antenna with notched characteristic. The ultra-broadband antenna comprises a dielectric substrate (1), a radiating element (2), a coplanar waveguide signal feed strip line (3) and a coplanar waveguide ground plane (4), wherein a horn-shaped groove (5) is formed in the radiating element, and two E-shaped grooves (6) are formed in the coplanar waveguide ground plane. The radiating element, the coplanar waveguide signal feed strip line and the coplanar waveguide ground plane are printed on the upper surface of the dielectric substrate; the radiating element is located at the middle part of the dielectric substrate, the coplanar waveguide signal feed strip line is led to the radiating element from the edge of the dielectric substrate and is connected to the radiating element; the coplanar waveguide ground plane is formed by two pieces of trapezoidal metals, which are respectively fixed on two sides of the coplanar waveguide signal feed strip line and are spaced with the coplanar waveguide signal feed strip line. The ultra-broadband antenna has the advantages of compact structure and compact size, through changing the size and the position of an epsilon-type groove, the notched frequency is adjusted, and the problem of the same frequency interference of an ultra-wideband communication system is solved.
Description
Technical field
The present invention designs a kind of antenna, is specifically related to a kind of ultra-wideband antenna with trap characteristic.
Background technology
Since FCC, (Federal Communications Commission) allows 3.1---and since the commercialization of 10.6GHz frequency range, super-broadband tech obtains at academic and commercial field and broadly pays close attention to.Do not need to hole and be easy to integrated coplanar waveguide structure to make rapid progress, and this structure can be made by camera technique, and have good polarization characteristic, therefore this technology has been applied in the design of ultra-wideband antenna and the design of relevant microwave circuit components and parts.
But, frequency band shared by current ultra-wideband communications and WiMAX(3.3 ~ 3.6GHz) there is shared part, therefore need the antenna designed can reduce the interference brought to WiMAX frequency range, 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.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 of trap characteristic is one of important 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 ultra-wideband antenna with trap characteristic of broader bandwidth, this antenna can be used in the military equipments such as electronics investigation, electronic countermeasures and civil equipment, reduces WiMAX(3.3 ~ 3.6GHz) interference of band communication.
Technical solutions according to the invention are:
There is the ultra-wideband antenna of trap characteristic, it is characterized in that: comprise medium substrate, radiating element, co-planar waveguide signal feed band line, co-planar waveguide ground plane, described radiating element, co-planar waveguide signal feed band line, co-planar waveguide ground plane are printed on medium substrate upper surface, described radiating element is positioned at the middle part of medium substrate, coplanar waveguide feeder line is guided radiating element into from medium substrate edge and is connected with it, and two panels co-planar waveguide ground plane is individually fixed in coplanar wave guide feedback band line both sides and has gap with band line.
The described ultra-wideband antenna with trap characteristic, is characterized in that: described co-planar waveguide ground plane is made up of two panels class trapezium structure metal.
The described ultra-wideband antenna with trap characteristic, is characterized in that: described co-planar waveguide ground plane is opened two E shape grooves.
The described ultra-wideband antenna with trap characteristic, is characterized in that: described radiating element is part-circular shape.
The described ultra-wideband antenna with trap characteristic, is characterized in that: described radiating element is opened erietiform groove.
Beneficial effect:
(1) inventive antenna single layer printed circuit plate technique can realize, simple and compact for structure, compact, and easy to process, cost is low.
(2) of the present inventionly on radiating element, open erietiform groove, by the adjusted size trap frequency of regulating tank, realize ultra-wideband communications and to disturb communication system mutually compatible, communication for coordination.
(3) antenna designed by the present invention adopts co-planar waveguide, is printed on medium substrate the same face, is conducive to microwave integrated circuit integrated.
(4) the present invention's etching groove on radiating element, eliminates the design of filter, reduces the complexity of design cost and system, improves the overall performance of system simultaneously, also reduce overall volume.
(5) the present invention has good impedance bandwidth and trap characteristic, simple and compact for structure, therefore considerably increases its scope of application.
(6) antenna involved in the present invention can improve according to the actual requirements voluntarily, arranges the size of radiating element, distance, groove size etc. between co-planar waveguide ground plane and radiating element, improves the performance of antenna.
(7) antenna involved in the present invention has good broadband character and good omnidirectional radiation characteristic, and the trap characteristic of this product can be avoided WiMAX(3.3 ~ 3.6GHz) band communication causes interference.
Accompanying drawing explanation
Fig. 1 is structure chart of the present invention;
Fig. 2 is the stationary wave characteristic curve of embodiment 1;
Fig. 3 is the testing radiation directional diagram of embodiment 1 at 4GHz;
Fig. 4 is the testing radiation directional diagram of embodiment 1 at 7GHz;
Fig. 5 is the testing radiation directional diagram of embodiment 1 at 10GHz.
Embodiment
Embodiment 1:
As shown in Figure 1, there is the ultra-wideband antenna of trap characteristic, its composition comprises: medium substrate (1), radiating element (2), co-planar waveguide signal feed band line (3), co-planar waveguide ground plane (4), radiating element is opened erietiform groove (5), and co-planar waveguide ground plane is opened two E shape grooves (6).Described radiating element, co-planar waveguide signal feed band line, co-planar waveguide ground plane are printed on medium substrate upper surface; Described radiating element is positioned at the middle part of medium substrate, and coplanar wave guide feedback band line is guided radiating element into from medium substrate edge and is connected with it; Co-planar waveguide ground plane is made up of the trapezoidal metal of two panels class, is individually fixed in coplanar wave guide feedback band line both sides and has gap with band line.
Described medium substrate is polytetrafluoroethylene material, thickness 1.6mm, and relative dielectric constant is 4.4.
Described coplanar wave guide feedback band line features impedance 50 Ω, live width 3.8mm.
Fig. 2 is the stationary wave characteristic curve of embodiment 1, and as shown in Figure 2, antenna is at WiMAX(3.3 ~ 3.6GHz) frequency range arranges a trap wave point, thus make the ultra-wideband communication devices of antenna can with to disturb communication system mutually compatible, communication for coordination.
As shown in Fig. 3,4,5, the antenna shown in embodiment 1 has good broadband character and good omnidirectional radiation characteristic.
Claims (5)
1. there is the ultra-wideband antenna of trap characteristic, it is characterized in that: comprise medium substrate, radiating element, co-planar waveguide signal feed band line, co-planar waveguide ground plane, described radiating element, co-planar waveguide signal feed band line, co-planar waveguide ground plane are printed on medium substrate upper surface, described radiating element is positioned at the middle part of medium substrate, coplanar waveguide feeder line is guided radiating element into from medium substrate edge and is connected with it, and two panels co-planar waveguide ground plane is individually fixed in coplanar wave guide feedback band line both sides and has gap with band line.
2. the ultra-wideband antenna with trap characteristic according to claim 1, is characterized in that: described co-planar waveguide ground plane is made up of two panels class trapezium structure metal.
3. the ultra-wideband antenna with trap characteristic according to claim 1, is characterized in that: described co-planar waveguide ground plane is opened two E shape grooves.
4. the ultra-wideband antenna with trap characteristic according to claim 1, is characterized in that: described radiating element is part-circular shape.
5. the ultra-wideband antenna with trap characteristic according to claim 1, is characterized in that: described radiating element is opened erietiform groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310617316.0A CN104681943A (en) | 2013-11-27 | 2013-11-27 | Ultra-broadband antenna with notched characteristic |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310617316.0A CN104681943A (en) | 2013-11-27 | 2013-11-27 | Ultra-broadband antenna with notched characteristic |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104681943A true CN104681943A (en) | 2015-06-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310617316.0A Pending CN104681943A (en) | 2013-11-27 | 2013-11-27 | Ultra-broadband antenna with notched characteristic |
Country Status (1)
| Country | Link |
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| CN (1) | CN104681943A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106025528A (en) * | 2016-06-30 | 2016-10-12 | 天津大学 | Broadband monopole antenna having multi-trapped wave characteristic |
-
2013
- 2013-11-27 CN CN201310617316.0A patent/CN104681943A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106025528A (en) * | 2016-06-30 | 2016-10-12 | 天津大学 | Broadband monopole antenna having multi-trapped wave characteristic |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150603 |