A kind of external pcb antennas of structure improved wifi double frequencies
Technical field
The present invention relates to wifi antenna technologies, more particularly to a kind of external pcb antennas of structure improved wifi double frequencies.
Background technology
Wifi technologies are increasingly popularized at present, and antenna is essential device.The current network terminal with wifi interfaces
The antenna of use mainly has following several types:Direct printed antenna on 1.pcb plates;Plug-in unit antenna on 2.pcb plates;3.pcb days
Line is installed in the structure;4 external antennas.
Direct printed antenna cost is minimum on pcb plates, but radiation pattern effect on driving birds is not good, and influenceed very by veneer size
Greatly, performance is worst.
Pifa antennas cost is relatively low on plate, and radiation pattern preferably, is especially suitable for the network terminal with wifi and uses.But
When the network terminal is processed, the processing technology of manufacturer is limited to, easily produces antenna by workman's bending, it is bad that pressure is lain prone etc.
Situation, has a strong impact on antenna performance.This kind of antenna productibility is poor.
Preferably, being most can be close to the antenna type of external antenna performance for pcb antenna patterns illustrateds in structure.But
Its shortcoming is that size is larger, distance largely influences antenna performance between antenna and veneer.
External antenna better performances, but high cost(General radiation body is copper product), be not suitable for the net produced in enormous quantities
Network terminal.And common external copper product antenna length is more long, and it is larger to make the difficulty of 2.4G, 5G double frequency wide frequency antenna.
Utility model content
The purpose of this utility model is to provide a kind of structure improved external pcb antennas of wifi double frequencies, solves existing skill
The shortcoming that art is present, by the improvement in structure, enhances product performance, and reduces production cost.
The utility model adopts the following technical scheme that realization:
A kind of external pcb antennas of structure improved wifi double frequencies, including pcb plates, antenna body and feeder.
The pcb plates center is provided with center feed point.
The antenna body includes 2 5G radiating doublets and 2 2.4G radiating doublets.
2 5G radiating doublets are respectively arranged at the right side at the positive left side of pcb plates and the back side, 2 2.4G spokes
Penetrate the left side that oscillator is respectively arranged at the positive right side of pcb plates and the back side.
The 5G radiating doublets are made up of 2 radiating elements symmetrical above and below, and each radiating element is different by 2 length
Pcb cablings are combined, and so can increase radiation bandwidth by adjusting 2 length of pcb cablings, improve stability.
The 2.4G radiating doublets are made up of 2 radiating elements symmetrical above and below, and each radiating element is by 2 length differences
Pcb cablings combine, so can increase radiation bandwidth by adjusting 2 length of pcb cablings, improve stability.
The feeder includes 5G oscillator gradual changes feeder line, the wide feeder line of 5G oscillators, 2.4G oscillator gradual change feeder lines and 2.4G
The wide feeder line of oscillator.
The positive 5G radiating doublets of pcb plates are connected to center feed point by the 5G oscillators gradual change feeder line;Described 5G oscillators etc.
The 5G radiating doublets of pcb backs are connected to center feed point by feeder line wide, while welding RF cable earth terminal;The 2.4G shakes
The positive 2.4G radiating doublets of pcb plates are connected to center feed point by sub- gradual change feeder line;The wide feeder line of 2.4G oscillators is by pcb plates
The 2.4G radiating doublets at the back side are connected to center feed point, while welding RF cable signal end.
The line width of the 5G oscillators gradual change feeder line becomes narrow gradually to center feed point direction;The 2.4G oscillators gradual change feeder line
Line width becomes narrow gradually to center feed point direction.
2 5G radiating doublets and 2 2.4G radiating doublets have separately constituted symmetrical half-wave dipole antenna, spoke
Penetrate and work well.
Each radiating element is combined by 2 different pcb cablings of length, so can be by adjusting 2 pcb cablings
Length merge increase radiation bandwidth, reduce impedance mismatching, improve stability, while 2 pcb are walked above each radiating element
Line make use of spatial area to greatest extent, can be substantially reduced antenna area, realize antenna miniaturization.
2 symmetric radiation elements on each radiating doublet constitute a small aerial array, can be effectively compressed axial direction
Emittance, improve the horizontal radiation effect of antenna, improve radiation omni-directional and radiation gain, it is to avoid energy loss.
The line width gradual change of the 5G oscillators gradual change feeder line can effectively reduce antenna impedance mismatch, improve antenna 5G's
S11 performances.
The line width gradual change of the 2.4G oscillators gradual change feeder line can effectively reduce antenna impedance mismatch, improve antenna in 2.4G
S11 performances.
The 5G oscillators gradual change feeder line is identical with the wide feed line length of 5G oscillators, and this length is used for tuned antenna in 5G
Centre frequency, it is ensured that meet application scenarios requirement.
The 2.4G oscillators gradual change feeder line is isometric with the wide feed line length of 2.4G oscillators, and this length is used for tuned antenna
In the centre frequency of 2.4G, it is ensured that meet application scenarios requirement.
Advantageous Effects of the present utility model are:The radiating doublet of pcb plate positive and negatives constitutes symmetrical half-wave dipole day
Line, radiation effect is good, and increase radiation bandwidth is merged by adjusting the length of pcb cablings, reduces impedance mismatching, improves stabilization
Property, while 2 pcb cablings make use of spatial area to greatest extent above each radiating element, antenna surface can be substantially reduced
Product, realizes antenna miniaturization.2 symmetric radiation elements on each radiating doublet constitute a small aerial array, Ke Yiyou
The emittance of effect compression axial direction, improves the horizontal radiation effect of antenna, improves radiation omni-directional and radiation gain, it is to avoid energy
Loss.The line width gradual change of the 5G oscillators gradual change feeder line can effectively reduce antenna impedance mismatch, improve S11 of the antenna in 5G
Energy.The line width gradual change of the 2.4G oscillators gradual change feeder line can effectively reduce antenna impedance mismatch, improve S11 of the antenna in 2.4G
Performance.The 5G oscillators gradual change feeder line is identical with the wide feed line length of 5G oscillators, and this length is used for tuned antenna 5G's
Centre frequency, it is ensured that meet application scenarios requirement.
The 2.4G oscillators gradual change feeder line is isometric with the wide feed line length of 2.4G oscillators, and this length is used for tuned antenna
In the centre frequency of 2.4G, it is ensured that meet application scenarios requirement.
The utility model has that small volume, antenna circularity be good, lower-cost feature, can be very good as wifi systems
Antenna.
Brief description of the drawings
Fig. 1 is front schematic view of the present utility model;
Fig. 2 is schematic rear view of the present utility model.
Specific embodiment
By the following description to embodiment, will more contribute to public understanding the utility model, but can't
Specific embodiment given by applicant is considered as the limitation to technical solutions of the utility model, it is any special to part or technology
Conversion that the definition levied is changed and/or makees to overall structure form and immaterial is regarded as technology of the present utility model
The protection domain that scheme is limited.
The present embodiment provides a kind of structure improved external pcb antennas of wifi double frequencies, structure as shown in Figures 1 and 2, including
Pcb plates 1, antenna body and feeder.
The center of pcb plates 1 is provided with center feed point 1.1.
The antenna body includes 2 5G radiating doublets 2 and 2 2.4G radiating doublets 3.
2 5G radiating doublets 3 are respectively arranged at the right side at the positive left side of pcb plates 1 and the back side, 2 2.4G
Radiating doublet 3 is respectively arranged at the left side at the positive right side of pcb plates 1 and the back side.
The 5G radiating doublets 3 are made up of 2 radiating elements 2.1 and 2.2 symmetrical above and below, and radiating element 2.1 is long by 2
The different pcb cablings 2.11 and 2.12 of degree are combined, and radiating element 2.2 is by the different pcb cablings 2.21 and 2.22 of 2 length
Combine, radiation bandwidth can be increased by adjusting the length of pcb cablings, improve stability.
The 2.4G radiating doublets 3 are made up of 2 radiating elements 3.1 and 3.2 symmetrical above and below, and radiating element 3.1 is by 2
The different pcb cablings 3.11 and 3.12 of length are combined, radiating element 3.2 by the different pcb cablings 3.21 of 2 length and
3.22 are combined, and radiation bandwidth can be increased by adjusting the length of pcb cablings, improve stability.
The feeder includes the wide feeder line 4.2 of 5G oscillator gradual changes feeder line 4.1,5G oscillators, 2.4G oscillator gradual change feeder lines
The wide feeder line 5.2 of 5.1 and 2.4G oscillators.
The positive 5G radiating doublets 2 of pcb plates 1 are connected to center feed point 1.1 by the 5G oscillators gradual change feeder line 4.1;It is described
The 5G radiating doublets 2 at the back side of pcb plates 1 are connected to center feed point 1.1 by the wide feeder line 4.2 of 5G oscillators, while welding RF cable
Earth terminal;The positive 2.4G radiating doublets 3 of pcb plates 1 are connected to center feed point 1.1 by the 2.4G oscillators gradual change feeder line 5.1;Institute
State 2.4G oscillators wide feeder line 5.2 and the 2.4G radiating doublets 3 at the back side of pcb plates 1 are connected to center feed point 1.1, while welding is penetrated
Frequency cable signal end.
The line width of the 5G oscillators gradual change feeder line 4.1 becomes narrow gradually to the direction of center feed point 1.1;The 2.4G oscillators gradual change
The line width of feeder line 5.1 becomes narrow gradually to the direction of center feed point 1.1.
2 5G radiating doublets 2 and 2 2.4G radiating doublets 3 have separately constituted symmetrical half-wave dipole antenna,
Radiation effect is good.
Each radiating element is combined by 2 different pcb cablings of length, so can be by adjusting 2 pcb cablings
Length merge increase radiation bandwidth, reduce impedance mismatching, improve stability, while 2 pcb are walked above each radiating element
Line make use of spatial area to greatest extent, can be substantially reduced antenna area, realize antenna miniaturization.
2 symmetric radiation elements on each radiating doublet constitute a small aerial array, can be effectively compressed axial direction
Emittance, improve the horizontal radiation effect of antenna, improve radiation omni-directional and radiation gain, it is to avoid energy loss.
The line width gradual change of the 5G oscillators gradual change feeder line 4.1 can effectively reduce antenna impedance mismatch, improve antenna in 5G
S11 performances.
The line width gradual change of the 2.4G oscillators gradual change feeder line 5.1 can effectively reduce antenna impedance mismatch, improve antenna and exist
The S11 performances of 2.4G.
The 5G oscillators gradual change feeder line 4.1 is identical with the wide length of feeder line 4.2 of the 5G oscillators, and this length is used for tuning day
Centre frequency of the line in 5G, it is ensured that meet application scenarios requirement.
The 2.4G oscillators gradual change feeder line 5.1 is isometric with the wide length of feeder line 5.2 of the 2.4G oscillators, and this length is used for adjusting
Centre frequency of the humorous antenna in 2.4G, it is ensured that meet application scenarios requirement.
The radiating doublet of the positive and negative of pcb plates 1 of the present embodiment constitutes symmetrical half-wave dipole antenna, and radiation effect is good,
Merge increase radiation bandwidth by adjusting the length of pcb cablings, reduce impedance mismatching, improve stability, while each is radiated
2 pcb cablings make use of spatial area to greatest extent above unit, can be substantially reduced antenna area, realize that antenna is small-sized
Change.2 symmetric radiation elements on each radiating doublet constitute a small aerial array, can be effectively compressed axial radiation
Energy, improves the horizontal radiation effect of antenna, improves radiation omni-directional and radiation gain, it is to avoid energy loss.The 5G oscillators
The line width gradual change of gradual change feeder line can effectively reduce antenna impedance mismatch, improve S11 performance of the antenna in 5G.The 2.4G oscillators
The line width gradual change of gradual change feeder line can effectively reduce antenna impedance mismatch, improve S11 performance of the antenna in 2.4G.The 5G oscillators
Gradual change feeder line is identical with the wide feed line length of 5G oscillators, and this length is used for centre frequency of the tuned antenna in 5G, it is ensured that full
Sufficient application scenarios requirement.
The 2.4G oscillators gradual change feeder line is isometric with the wide feed line length of 2.4G oscillators, and this length is used for tuned antenna
In the centre frequency of 2.4G, it is ensured that meet application scenarios requirement.
The utility model has that small volume, antenna circularity be good, lower-cost feature, can be very good as wifi systems
Antenna.
Certainly, the utility model can also have other various embodiments, without departing substantially from the utility model spirit and its essence
In the case of, those of ordinary skill in the art can make various corresponding changes and deformation, but this according to the utility model
A little corresponding changes and deformation should all belong to the scope of the claims appended by the utility model.