CN203326099U

CN203326099U - Ultra-wideband antenna having trap wave characteristics

Info

Publication number: CN203326099U
Application number: CN2012206567290U
Authority: CN
Inventors: 李琦; 胡文龙; 李明旭
Original assignee: Harbin Feiyu Technology Co Ltd
Current assignee: Harbin Feiyu Technology Co Ltd
Priority date: 2012-12-04
Filing date: 2012-12-04
Publication date: 2013-12-04
Anticipated expiration: 2022-12-04

Abstract

The utility model discloses an ultra-wideband antenna having trap wave characteristics. The ultra-wideband antenna comprises a medium base board (1), a radiation unit (2), a coplanar waveguide signal feed strip line (3), a coplanar waveguide ground plane (4) and a right-angled theta-shaped groove (5) arranged on the radiation unit. The radiation unit, the coplanar waveguide signal feed strip line and the coplanar waveguide ground plane are printed on an upper surface of the medium base board, a coplanar waveguide feed line is led from an edge of the medium base board to the radiation unit and is connected with the radiation unit, the coplanar waveguide ground plane is formed by two trapezoid-like metal sheets and are respectively fixed at two sides of the coplanar waveguide signal feed strip line with gaps. The ultra-wideband antenna has a compact structure and small dimensions, trap wave frequency can be adjusted through changing dimensions and a position of the right-angled theta-shaped groove, so a problem of co-frequency interference in an ultra-wideband communication system is solved.

Description

Ultra-wideband antenna with trap characteristic

Technical field

The utility model 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 has obtained paying close attention to more widely at academic and commercial field.Do not need boring and be easy to integrated coplanar waveguide structure to make rapid progress, and this structure can be made by camera technique, and polarization characteristic is preferably arranged, so this technology has been applied in the design of the design of ultra-wideband antenna and relevant microwave circuit components and parts.

Yet the frequency band that current ultra-wideband communications is shared and WLAN (wireless local area network) have shared part, therefore need the antenna of design to reduce to WLAN (wireless local area network) and bring interference, the ultra-wideband antenna that design has two trap characteristics becomes the focus of current research.If do not have suitable design to suppress harmonic resonance and parasitic emission, antenna will produce electromagnetic interference near equipment, jeopardize the normal operation of the system of system itself and vicinity, particularly the LAN system of current use be caused to interference.Add filter and be the method for the solution problems the most often used, but tend to cause antenna and microwave circuit not to mate, even reduce the overall efficiency of system, therefore designing the co-planar waveguide ultra-wideband antenna with trap characteristic is one of important method of head it off, solves the structure of current antenna and the problem of technique more complicated simultaneously.

The utility model content

The purpose of this utility model is to provide a kind of simple in structure, volume is small and exquisite, the ultra-wideband antenna with trap characteristic of broader bandwidth, this antenna can use on the military equipment such as electronics investigation, electronic countermeasures and civil equipment, reduces the interference to satellite X-band (7.25～7.75GHz) communication.

Technical scheme described in the utility model is:

Ultra-wideband antenna with trap characteristic, it is characterized in that: comprise medium substrate, radiating element, co-planar waveguide signal feed band line, the co-planar waveguide ground plane, described radiating element, co-planar waveguide signal feed band line, co-planar waveguide ground plane are printed on the 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 and is connected with it from the medium substrate edge, two co-planar waveguide ground planes are individually fixed in coplanar wave guide feedback band line both sides and gapped with the band line.

The described ultra-wideband antenna with trap characteristic is characterized in that: described co-planar waveguide ground plane consists of two class trapezium structure metals.

The described ultra-wideband antenna with trap characteristic is characterized in that: described radiating element is the rectangular configuration of removing two angles.

The described ultra-wideband antenna with trap characteristic is characterized in that: open two rectangular channels on described radiating element.

Beneficial effect:

(1) the utility model antenna single layer printed circuit plate technique can realize, simple and compact for structure, volume is small and exquisite, easy to process, and cost is low.

(2) described in the utility model on radiating element etching day the shape groove, by the adjusted size trap frequency of regulating tank, realize ultra-wideband communications and to disturb mutually communication system compatible, communication for coordination.

(3) antenna structure described in the utility model is simple, technical maturity, and automaticity is high, is convenient to batch production and low production cost.

(4) the designed antenna of the utility model adopts co-planar waveguide, is printed on the medium substrate the same face, is conducive to microwave integrated circuit integrated.

(5) the utility model etching groove on radiating element and ground plane, the design of having saved filter, reduce the complexity of design cost and system, improves the overall performance of system simultaneously, also dwindled overall volume.

(6) the utlity model has good impedance bandwidth and trap characteristic, simple and compact for structure, therefore greatly increased its scope of application.

(7) the related antenna of the utility model can improve according to the actual requirements voluntarily, and distance between size, co-planar waveguide ground plane and the radiating element of radiating element, groove size etc. are set, and improves the performance of antenna.

(8) the related antenna of the utility model has good broadband character and good omnidirectional radiation characteristic, and the trap characteristic of this product can avoid the communication to X-band to cause interference.

The accompanying drawing explanation

Fig. 1 is structure chart of the present utility model;

The stationary wave characteristic curve that Fig. 2 is 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;

The equivalent-circuit model figure that Fig. 6 is radiation source.

Embodiment

Embodiment 1:

As shown in Figure 1, have the ultra-wideband antenna of trap characteristic, its composition comprises: medium substrate (1), and radiating element (2), co-planar waveguide signal feed band line (3), co-planar waveguide ground plane (4) is opened a day shape groove (5) on radiating element.Described radiating element, co-planar waveguide signal feed band line, co-planar waveguide ground plane are printed on the 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 and is connected with it from the medium substrate edge; The co-planar waveguide ground plane consists of two trapezoidal metals of class, is individually fixed in coplanar wave guide feedback band line both sides and gapped with the band line.

Described medium substrate is the polytetrafluoroethylene material, thickness 1.6mm, and relative dielectric constant is 4.4.

Described coplanar wave guide feedback band line characteristic impedance 50 Ω, live width 3.8mm.

The stationary wave characteristic curve that Fig. 2 is embodiment 1, as shown in Figure 2, antenna arranges a trap wave point at satellite X-band (7.25～7.75), thereby makes the ultra-wideband communication devices of antenna can be with to disturb mutually communication system 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

1. the ultra-wideband antenna that there is trap characteristic, it is characterized in that: comprise medium substrate, radiating element, co-planar waveguide signal feed band line, the co-planar waveguide ground plane, described radiating element, co-planar waveguide signal feed band line, co-planar waveguide ground plane are printed on the 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 and is connected with it from the medium substrate edge, two co-planar waveguide ground planes are individually fixed in coplanar wave guide feedback band line both sides and gapped with the band line.

2. the ultra-wideband antenna with trap characteristic according to claim 1, it is characterized in that: described co-planar waveguide ground plane consists of two class trapezium structure metals.

3. the ultra-wideband antenna with trap characteristic according to claim 1, it is characterized in that: described radiating element is the rectangular configuration of removing two angles.

4. the ultra-wideband antenna with trap characteristic according to claim 1, is characterized in that: open two rectangular channels on described radiating element.