CN107196056A

CN107196056A - Small-sized plane ultra-wideband antenna

Info

Publication number: CN107196056A
Application number: CN201710487565.0A
Authority: CN
Inventors: 陈建军; 蔡玉亭; 王长林; 项勇跃; 刘晴晴; 张宪维; 白明杰
Original assignee: Tianjin 764 Communication and Navigation Technology Corp
Current assignee: Tianjin 764 Communication and Navigation Technology Corp
Priority date: 2017-06-23
Filing date: 2017-06-23
Publication date: 2017-09-22
Anticipated expiration: 2037-06-23
Also published as: CN107196056B

Abstract

The present invention relates to a kind of small-sized plane ultra-wideband antenna, including dielectric substrate, gap, microstrip feed line and SMA radio frequency connectors, dielectric substrate is relative dielectric constant 4.4, FR4 sheet materials, gap is that 20 24mm circles are risen as high as the banks to remove the diameter that the metal level of dielectric substrate upper surface round shape leaves, there is a unfilled corner in circle horizontal direction, unfilled corner summit is in round horizontal diameter, the 15mm of unfilled corner radius a=11, angle, θ=13 17 °, there is the blind mouth of a rectangle downwards in circle lower end edge perpendicular diameter, the blind mouth of rectangle is with circle intersection point away from dielectric substrate bottom face 11mm, there is a strip metal microstrip feed line upwardly from bottom on the median vertical line of dielectric substrate another side, microstrip feed line size meets the requirement of 50 Ω impedances, SMA radio frequency connectors are fixed on microstrip feed line, the metal level ground connection of dielectric substrate, have the technical effect that compact conformation, small volume, it is easy to microwave integrated, meet requirement of the super broad band radio communication system to antenna radiation characteristics, can as pocket super-broadband system dual-mode antenna.

Description

Small-sized plane ultra-wideband antenna

Technical field

The present invention relates to a kind of ultra-wideband antenna, more particularly to a kind of small-sized plane ultra-wideband antenna.

Background technology

In recent years, people are more and more extensive for the research of super-broadband tech, and being primarily due to this system has The wide frequency range from 3.1GHz to 10.6GHz, in short distance（10 meters）Very big data transfer speed can be obtained Rate, simultaneously because its own low-power consumption and high power capacity feature, are allowed to and the Bluetooth technology and IEEE 802.11/ in practicality a/b/g（54 Mbps/11 Mbps/22 Mbps）Compared to the characteristics of itself and advantage.

People have been devised by a variety of antennas suitable in the frequency band range, but most of they are all three-dimensional days Line, difficulty is than larger in design and manufacture, and can occupy in practicality very big space, it is difficult to realize and mini-system Integrated design.

The content of the invention

In view of the problem of prior art is present, the present invention provides a kind of small-sized plane ultra-wideband antenna, its working frequency from 3.1GHz to 10.6GHz, output impedance：50 Ω, antenna standing wave：≤ 2, average gain：2.8dBi；

Concrete technical scheme is：A kind of small-sized plane ultra-wideband antenna, including dielectric substrate, gap, microstrip feed line and SMA radio frequencies Connector, it is characterised in that：Dielectric substrate is the FR4 sheet materials that relative dielectric constant is 4.4, and gap is removal dielectric substrate upper table The circle that the round-shaped metal level in face leaves is risen as high as the banks, and described circle diameter of rising as high as the banks is 20-24mm, and round upper end is away from dielectric substrate End face 3-5mm, has a unfilled corner, unfilled corner summit is in round horizontal diameter, unfilled corner radius a=11-15mm in circle horizontal direction, - 17 ° of angle, θ=13 °, in circle lower end, have downwards the blind mouth of a rectangle along perpendicular diameter, the blind mouth of rectangle is with circle intersection point away from dielectric substrate Bottom face 9-13mm, the long 4.5-6.5mm of the blind mouth of rectangle, width 4.4-6.4mm, the bottom of from the median vertical line of dielectric substrate another side End face has the microstrip feed line of strip metal layer upwards, and microstrip feed line length and width size meets the requirement of 50 Ω impedances, SMA radio frequencies Connector is fixed on microstrip feed line, the metal level ground connection of dielectric substrate.

The solution have the advantages that, compact conformation, small volume, it is easy to which microwave is integrated.Antenna is in whole working band The shape of antenna pattern can keep stable and with preferable out-of-roundness, antenna pattern bandwidth and the impedance band of antenna It is wide to coincide substantially, it is fully able to meet requirement of the super broad band radio communication system to antenna radiation characteristics, can be as small-sized super The dual-mode antenna of broadband system, with certain practical value.

Brief description of the drawings

Fig. 1 is structural representation of the invention.

Embodiment

As shown in figure 1, small-sized plane ultra-wideband antenna, including dielectric substrate 1, gap 2, microstrip feed line 3 and SMA radio frequencies connect Device 4 is connect, the relative dielectric constant of dielectric substrate 1 is 4.4, and thickness is 1.6mm, a length of 37mm, a width of 30mm FR4 sheet materials, seam Gap 2 is rising as high as the banks that the metal level of the removal upper surface definite shape of dielectric substrate 1 leaves, and described definite shape is that diameter is 22mm Circle, there is a unfilled corner round upper end, unfilled corner summit is straight in round level away from the upper surface 4mm of dielectric substrate 1 in circle horizontal direction On footpath, unfilled corner radius a=13mm, angle, θ=15 ° in circle lower end, have downwards the blind mouth of a rectangle along perpendicular diameter, the blind mouth of rectangle with Circle intersection point is away from dielectric substrate（1）Bottom face 11mm, the long 5.5mm of the blind mouth of rectangle, width 5.4mm, in the vertical of the another side of dielectric substrate 1 There are a strip sheet metal, i.e. microstrip feed line 3 on center line upwardly from bottom, the length and width size of microstrip feed line 3 meets 50 Ω impedances It is required that, SMA radio frequency connectors 4 are fixed on microstrip feed line 3, the metal level ground connection of dielectric substrate 1.

A kind of small-sized plane ultra-wideband antenna that this patent is proposed, slot by grading structure and on the face of ground connection come Ultra wide band working characteristics is realized, the diminution of size can also be realized.Measured by numerical simulation and experiment, fully have studied this Plant the working characteristics of antenna.As a result show：The antenna has more than 4:1 bandwidth of operation, while having in working band good Good stable radiation characteristic, with preferable use value.

Claims

1. a kind of small-sized plane ultra-wideband antenna, including dielectric substrate（1）, gap（2）, microstrip feed line（3）And the connection of SMA radio frequencies Device（4）, it is characterised in that：Dielectric substrate（1）Be 4.4 for relative dielectric constant, FR4 sheet materials, gap（2）To remove medium base Piece（1）The circle that the round-shaped metal level in upper surface leaves is risen as high as the banks, and described circle diameter of rising as high as the banks is 20-24mm, round upper end away from Dielectric substrate（1）Upper surface 3-5mm, has a unfilled corner in circle horizontal direction, and unfilled corner summit is in round horizontal diameter, unfilled corner half Footpath a=11-15mm, -17 ° of angle, θ=13 ° in circle lower end, have downwards the blind mouth of a rectangle along perpendicular diameter, the blind mouth of rectangle is handed over circle Point is away from dielectric substrate（1）Bottom face 9-13mm, the long 4.5-6.5mm of the blind mouth of rectangle, width 4.4-6.4mm, in dielectric substrate another side Median vertical line on have upwardly from bottom a strip metal layer microstrip feed line（3）, microstrip feed line（3）Length and width size is met The requirement of 50 Ω impedances, SMA radio frequency connectors（4）It is fixed on microstrip feed line（3）On, dielectric substrate（1）Metal level ground connection.