CN106450710A - Broadband antenna - Google Patents
Broadband antenna Download PDFInfo
- Publication number
- CN106450710A CN106450710A CN201510472759.4A CN201510472759A CN106450710A CN 106450710 A CN106450710 A CN 106450710A CN 201510472759 A CN201510472759 A CN 201510472759A CN 106450710 A CN106450710 A CN 106450710A
- Authority
- CN
- China
- Prior art keywords
- paster
- assembly
- broad
- band antenna
- disk
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
- H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/48—Earthing means; Earth screens; Counterpoises
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/30—Arrangements for providing operation on different wavebands
- H01Q5/307—Individual or coupled radiating elements, each element being fed in an unspecified way
- H01Q5/314—Individual or coupled radiating elements, each element being fed in an unspecified way using frequency dependent circuits or components, e.g. trap circuits or capacitors
- H01Q5/335—Individual or coupled radiating elements, each element being fed in an unspecified way using frequency dependent circuits or components, e.g. trap circuits or capacitors at the feed, e.g. for impedance matching
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- Waveguide Aerials (AREA)
Abstract
The present invention provides a broadband antenna. The broadband antenna is configured for a mobile terminal and comprises a ground assembly, a disc patch, at least one short-circuit probe and a signal feed assembly. The disc patch is provided with a notch, is connected with the ground assembly through the at least one short-circuit probe, and is connected with the mobile terminal through the signal feed assembly, and the signal feed assembly is connected with the ground assembly. The broadband antenna is subjected to notching on the disc patch and uses the short-circuit probe to regulate the resonance characteristic and the impedance matching of the antenna to form the double resonance so as to broaden the bandwidth, and the structure is simple and easy to realize.
Description
Technical field
The present invention relates to wireless communication technology field, more particularly to a kind of broad-band antenna for mobile terminal.
Background technology
In prior art, realizing the wide band method of antenna mainly has：Using the dielectric substrate of special material,
Additional impedance matching network, antenna loading, optimized algorithm, using multilayer dielectricity substrate and coplanar parasitic patch
Piece etc..
But said method is commonly present following problem：Design complexity is difficult to realize, and it is little to improve amplitude.For example,
Using the dielectric substrate of special material, production cost is higher, obtained from maximum bandwidth often only about resonance frequency
The 10% of rate；Additional impedance matching network, complex structure be difficult realize, obtained from maximum bandwidth often only
About resonant frequency 30%.
Content of the invention
It is an object of the invention to provide a kind of broad-band antenna, by slotting on disk paster and using short circuit
Probe, can adjust resonance characteristic and the impedance matching of antenna, form double resonance thus broadening bandwidth, and tie
Structure is simply easily realized.
In order to realize above-mentioned purpose, the present invention provides a kind of broad-band antenna, for a mobile terminal, including
Grounding assembly, disk paster, at least one grounding probe and signal feed-in assembly；
Wherein, described disk paster has fluting, described disk paster passes through at least one short circuit described and visits
Pin is connected with described grounding assembly, and described disk paster is by described signal feed-in assembly and described mobile terminal
Connect, described signal feed-in assembly is connected with described grounding assembly.
Preferably, described slot as annular groove, described disk paster is divided into separate by described annular groove
The first disk paster and annulus paster, described first disk paster by described signal feed-in assembly with described
Mobile terminal connects, and described annulus paster is connected with described grounding assembly by least one grounding probe described.
Preferably, described slot as U-type groove.
Preferably, the central point of described disk paster is connected with described mobile terminal by described signal feed-in assembly
Connect.
Preferably, described signal feed-in assembly is a coaxial line, and outer layer is connected with described grounding assembly, in
Between be dielectric layer, internal layer is feed copper core, and one end is connected with described disk paster, the other end and described movement
Terminal connects.
Preferably, the material of described disk paster covers the printed circuit board (PCB) of copper using one side.
Preferably, the gap width of described annular groove is 1mm, a diameter of the 8 of described first disk paster
Mm, the internal diameter of described annulus paster is 10mm and external diameter is 20mm.
By the technique scheme of the present invention, the beneficial effects of the present invention is：
The broad-band antenna of the present invention, by slotting on disk paster and using grounding probe, can adjust sky
The resonance characteristic of line and impedance matching, form double resonance thus broadening bandwidth, that is, relative bandwidth can reach
63.2%, and realize antenna and have larger gain in the horizontal plane.Meanwhile, the broad-band antenna of the present invention can be adopted
Use low section structure, realize miniaturization, can be in the Wi-Fi of the mobile terminals such as router, vehicle-mounted, TV
Use with high frequency antenna.
Brief description
Fig. 1 represents the front schematic view of the broad-band antenna of one embodiment of the invention.
Fig. 2 represents the generalized section of the broad-band antenna of one embodiment of the invention.
Fig. 3 represents the S11 parametric plot of the broad-band antenna of one embodiment of the invention.
Fig. 4 represents the VSWR figure of the broad-band antenna of one embodiment of the invention.
Fig. 5 represents the normalized radiation pattern of the broad-band antenna of one embodiment of the invention.
Fig. 6 represents the broad-band antenna of one embodiment of the invention gain diagram in 60 ° of angle.
Fig. 7 represents broad-band antenna in Fig. 1 S11 in the case of the grounding probe with different radii R
Parametric plot.
Fig. 8 represents the feelings in the first disk paster with different-diameter Dcenter for the broad-band antenna in Fig. 1
S11 parametric plot under condition.
Fig. 9 represents broad-band antenna in Fig. 1 in the case of having the annulus paster of various outer diameter Douter
S11 parametric plot.
Figure 10 represents broad-band antenna in Fig. 1 in the case of having different groove width SLOT_W
S11 parametric plot.
Figure 11 represents the front schematic view of the broad-band antenna of another embodiment of the present invention.
Figure 12 represents the generalized section of the broad-band antenna of another embodiment of the present invention.
Figure 13 represents the S11 parametric plot of the broad-band antenna of another embodiment of the present invention.
Figure 14 represents ordinary rectangular paster antenna schematic diagram and its equivalent circuit diagram.
Figure 15 represents the rectangular patch antenna schematic diagram and its equivalent circuit diagram adding U-type groove.
Specific embodiment
Purpose, technical scheme and advantage for making the embodiment of the present invention are clearer, below in conjunction with accompanying drawing pair
Specific embodiment is described in detail.
Referring to shown in Fig. 1, Fig. 2, the embodiment of the present invention provides a kind of broad-band antenna, for a mobile terminal,
Including grounding assembly 1, disk paster 2, at least one grounding probe 3 and signal feed-in assembly 4；
Wherein, described grounding assembly 1 is used for being grounded, and described disk paster 2 has fluting 5, described circle
Disk paster 2 is connected with described grounding assembly 1 by least one grounding probe 3 described, described disk paster
2 are connected with described mobile terminal by described signal feed-in assembly 4, described signal feed-in assembly 4 with described
Grounding assembly 1 connects.Specifically, described disk paster 2 is used for launching radiofrequency signal, described signal feed-in
Assembly 4 is used for signal feed-in radiant section.
Specifically, in FIG, described fluting 5 is annular groove 51, and the quantity of described grounding probe 3 is 4
Individual.Due to the presence of described annular groove 51, described disk paster 2 is divided into the first separate circle
Disk paster 21 and annulus paster 22, described disk paster 2 and described first disk paster 21 are concentric circular
Structure, and described first disk paster 21 is connected with described mobile terminal by described signal feed-in assembly 4,
Described annulus paster 22 is connected with described grounding assembly 1 by described 4 grounding probes 3.
Wherein, the central point of described disk paster 2 or described first disk paster 21 is presented by described signal
Enter assembly 4 to be connected with described mobile terminal, and the radial outer edge of described annulus paster 22 passes through described 4
Grounding probe 3 is connected with described grounding assembly 1 respectively, to adjust resonance characteristic.The material of described disk paster
Material covers the printed circuit board (PCB) of copper using one side.
Specifically, described signal feed-in assembly 4 is, for example, a coaxial line, outer layer and described grounding assembly 1
Connect, centre is dielectric layer, internal layer is feed copper core, one end is connected with described disk paster 2, the other end
It is connected with described mobile terminal.
It is pointed out that the present invention does not limit the number of described grounding probe, except 4 in Fig. 1
Individual or 2 or 3, can determine according to actual demand.And, the present invention opens described in also not limiting
The shape of groove, except the annular groove in Fig. 1 or ellipse, square, U-shaped etc., can be according to needing
Ask and selected.
The broad-band antenna of the embodiment of the present invention, by slotting on disk paster and using grounding probe, can
Adjust the resonance characteristic of antenna and impedance matching, form double resonance thus broadening bandwidth, and structure is simply easily real
Existing.
Below, by a specific embodiment, the present invention is described in further detail, and antenna structure can be found in
Shown in Fig. 1, Fig. 2.
In the specific embodiment of the invention, described broad-band antenna is to make on the basis of low section body, institute
Stating low section body is a diameter of DGND, cylinder highly for H, and remove the sky on its top circular surface
Chamber, covers the printed circuit board (PCB) of copper using one side.
Wherein, the diameter D of described low section bodyGNDFor 100mm, height H is 8mm, the first disk
The diameter Dcenter of paster 21 is 8mm, and the internal diameter Dinner of annulus paster 22 is 10mm, external diameter
Douter is 20mm, and gap width SLOT_W of annular groove 51 is 1mm, refers to table 1.
| H | Dcenter | Dinner | SLOT_W | Douter | DGND |
| 8mm | 8mm | 10mm | 1mm | 20mm | 100mm |
Table 1
The central point of described first disk paster 21 is connected with a mobile terminal by signal feed-in assembly 4,
The radial outer edge of described annulus paster 22 is connected with grounding assembly 1 respectively by 4 grounding probes 3, institute
The radius stating grounding probe 3 is R, highly for H (8mm).And described disk paster and earth plate are also adopted
Cover the printed circuit board (PCB) of copper with one side, and in order to reduce its impact to antenna performance as far as possible, preferably relatively
Dielectric constant is 2.6 medium.
In order to determine the performance of the broad-band antenna of the specific embodiment of the invention, using HFSS simulation software (three
Dimension electromagnetic simulation software) emulated, the simulation result obtaining is referring to Fig. 3-Fig. 6.
Specifically, can learn from the S11 parametric plot of Fig. 3：The mid frequency of described broad-band antenna
Freq is 2.5GHz, in return loss S11<During 10db, the impedance band of described broad-band antenna is 1.92～
3.5GHz, relative bandwidth has reached 63.2%, improves amplitude big.
Can learn from VSWR (voltage standing wave ratio) figure of Fig. 4：In 1.62～3.64GHz frequency band,
Described broad-band antenna meets VSWR<2.0, that is, described broad-band antenna meet the requirement of basic antenna.
Can learn from the normalized radiation pattern of Fig. 5 and Fig. 6 gain diagram on 60 ° of angle：Work
In frequency band, directional diagram is not distorted and has larger emittance in 60 ° of angle, and gain is more than
-1dB.
As shown in the above：The broad-band antenna of the present invention can effective broadening bandwidth, that is, relative bandwidth can
Reaching 63.2%, and realize antenna has larger gain in the horizontal plane.Meanwhile, the broad-band antenna of the present invention
Low section structure can be adopted, realize miniaturization, can be in mobile terminals such as router, vehicle-mounted, TVs
On Wi-Fi and high frequency antenna.
It is pointed out that the antenna size shown in table 1, a kind of simply optimal way of the present invention, not
The present invention can be limited.
Additionally, having different half referring to shown in Fig. 7-Figure 10, giving the broad-band antenna shown in Fig. 1
The grounding probe of footpath R, the first disk paster of different-diameter Dcenter, the annulus of various outer diameter Douter
S11 parametric plot in the case of paster and different groove width SLOT_W.
Specifically, from figure 7 it can be seen that when grounding probe radius R become big when, described broad-band antenna
Operating frequency integrally move to right, that is, the radius of described grounding probe change affect antenna resonant frequency；From
Fig. 8 can be seen that when the diameter Dcenter of the first disk paster becomes big, the low frequency of described broad-band antenna
Resonance point and high-frequency resonant point have close trend, that is, pass through to change the humorous of Dcenter scalable broad-band antenna
Shake characteristic, to form broadband；From fig. 9, it can be seen that the change of outer diameter D outer of annulus paster is main
The low-frequency resonant point of impact broad-band antenna, and the increase with Douter, the low-frequency resonant point of broad-band antenna
Change in location larger, and the impact to other two low-frequency resonant points is less；From fig. 10 it can be seen that
What gap width SLOT_W of annular groove mainly affected is the resonant intensity of broad-band antenna.
So, based on above-mentioned situation of change, when making the broad-band antenna of the present invention, can carry out different
Select the broad-band antenna of the suitable application to obtain optimum.
Referring to shown in Figure 11, Figure 12, the embodiment of the present invention also provides a kind of broad-band antenna, including ground connection group
Part 1,2,4 grounding probes 3 of disk paster and signal feed-in assembly 4；Wherein, described disk paster 2
On there is U-type groove 52, and the central point of described disk paster 2 is by described signal feed-in assembly 4 and institute
State mobile terminal to connect, the edge of described disk paster 2 pass through described 4 grounding probes 3 respectively with described
Grounding assembly 1 connects.
Specifically, compared with the broad-band antenna shown in Fig. 1, the broad-band antenna in Figure 11 adopts U-type groove,
Described U-type groove is used for changing disk chip surface current direction, to reach the purpose of broadening bandwidth.
Likewise, for the performance determining the broad-band antenna shown in Figure 11, being entered using HFSS simulation software
Row emulation, wherein, the diameter D of low section bodyGNDFor 100mm, the diameter Dpatch of described disk paster 2
For 20mm, the cell body height W of described U-type groove is 9.6mm, and cell body length L is 12.4mm, groove
Wall thickness b is 1mm, and thickness of groove bottom c is 1mm.
According to above-mentioned emulation, the S11 parametric plot obtaining is as shown in figure 13, it can be seen that：Institute
The mid frequency stating broad-band antenna is 2.4GHz, in return loss S11<During 10db, described broad-band antenna
Impedance band be 2.08～2.72GHz, relative bandwidth reached 27%, met the requirement of broad-band antenna.
Below, taking U-type groove as a example, introduce fluting can broadening bandwidth the reason.
Referring to shown in Figure 14, Figure 15, Figure 14 represents ordinary rectangular paster antenna schematic diagram and its equivalent electric
Lu Tu, Figure 15 represent the rectangular patch antenna schematic diagram and its equivalent circuit diagram adding U-type groove.Wherein, from
Figure 14 can be seen that ordinary rectangular paster antenna and can be equivalent to a simple LC resonant tank, electricity
Stream I flows out from distributing point Q, flows to radiating side along paster, and L and C in equivalent LC resonant tank
Value depend on flowing to the path of the electric current of radiating side along paster.
After having U-type groove on rectangular patch, as shown in figure 15, its equivalent circuit can change.Tool
Body, in the electric current of rectangular patch intermediate flow, its sense of current and path almost do not change, this
Partly equivalent LC resonant tank is held essentially constant, and still occurs one at original resonant frequency
Resonance point.However, in the place deviateing rectangular patch center, due to the presence of U-type groove, electric current can edge
The edge flowing of U-type groove so as to path accordingly increases, be reacted to be equivalent on equivalent circuit and increased
A part of series inductance, that is, the equivalent circuit of this part increased series inductance for LC resonant tank.
So, through the rectangular patch antenna of slot treatment, equivalent circuit is just by original single resonant tank
It is changed into double resonance circuit form, two resonance points occur.And pass through rational slot treatment, can be by two
Resonance point connects together, and forms broadband.
The above is only the preferred embodiment of the present invention it is noted that common for the art
For technical staff, under the premise without departing from the principles of the invention, some improvements and modifications can also be made,
These improvements and modifications also should be regarded as protection scope of the present invention.
Claims (7)
1. a kind of broad-band antenna, for a mobile terminal it is characterised in that including grounding assembly, disk
Paster, at least one grounding probe and signal feed-in assembly；
Wherein, described disk paster has fluting, described disk paster passes through at least one short circuit described and visits
Pin is connected with described grounding assembly, and described disk paster is by described signal feed-in assembly and described mobile terminal
Connect, described signal feed-in assembly is connected with described grounding assembly.
2. broad-band antenna according to claim 1 it is characterised in that described fluting be annular groove,
Described disk paster is divided into the first separate disk paster and annulus paster by described annular groove, described
First disk paster is connected with described mobile terminal by described signal feed-in assembly, and described annulus paster passes through
At least one grounding probe described is connected with described grounding assembly.
3. broad-band antenna according to claim 1 is it is characterised in that described fluting is U-type groove.
4. according to the arbitrary described broad-band antenna of claim 1-3 it is characterised in that described disk paster
Central point be connected with described mobile terminal by described signal feed-in assembly.
5. broad-band antenna according to claim 1 is it is characterised in that described signal feed-in assembly is
One coaxial line, outer layer is connected with described grounding assembly, and centre is dielectric layer, and internal layer is feed copper core, and one
End is connected with described disk paster, and the other end is connected with described mobile terminal.
6. broad-band antenna according to claim 1 is it is characterised in that the material of described disk paster
Cover the printed circuit board (PCB) of copper using one side.
7. broad-band antenna according to claim 2 is it is characterised in that the slit width of described annular groove
Spend for 1mm, a diameter of 8mm of described first disk paster, the internal diameter of described annulus paster is 10mm
And external diameter is 20mm.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510472759.4A CN106450710A (en) | 2015-08-04 | 2015-08-04 | Broadband antenna |
| PCT/CN2016/079669 WO2016180183A1 (en) | 2015-08-04 | 2016-04-19 | Broadband antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510472759.4A CN106450710A (en) | 2015-08-04 | 2015-08-04 | Broadband antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106450710A true CN106450710A (en) | 2017-02-22 |
Family
ID=57247739
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510472759.4A Pending CN106450710A (en) | 2015-08-04 | 2015-08-04 | Broadband antenna |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN106450710A (en) |
| WO (1) | WO2016180183A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107785659A (en) * | 2017-10-16 | 2018-03-09 | 广东曼克维通信科技有限公司 | Aircraft and its airborne ultra-wideband omni-directional antenna |
| CN108011196A (en) * | 2017-11-20 | 2018-05-08 | 电子科技大学 | A kind of one-dimensional wide angle scanning Phased Array Antenna based on multi-mode |
| CN109037929A (en) * | 2018-07-11 | 2018-12-18 | 广州吉欧电子科技有限公司 | A kind of measurement type GNSS antenna |
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| CN203521600U (en) * | 2013-09-30 | 2014-04-02 | 上海海积信息科技有限公司 | Strip-shaped multimode satellite antenna |
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| CN104103900A (en) * | 2014-07-10 | 2014-10-15 | 电子科技大学 | Low-profile broadband dual-polarization omnidirectional antenna |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107785659A (en) * | 2017-10-16 | 2018-03-09 | 广东曼克维通信科技有限公司 | Aircraft and its airborne ultra-wideband omni-directional antenna |
| CN108011196A (en) * | 2017-11-20 | 2018-05-08 | 电子科技大学 | A kind of one-dimensional wide angle scanning Phased Array Antenna based on multi-mode |
| CN108011196B (en) * | 2017-11-20 | 2019-08-13 | 电子科技大学 | A kind of one-dimensional wide angle scanning Phased Array Antenna based on multi-mode |
| CN109037929A (en) * | 2018-07-11 | 2018-12-18 | 广州吉欧电子科技有限公司 | A kind of measurement type GNSS antenna |
| CN109037929B (en) * | 2018-07-11 | 2024-04-05 | 广州吉欧电子科技有限公司 | Measurement type GNSS antenna |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2016180183A1 (en) | 2016-11-17 |
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