CN103427156A - Broadband antenna - Google Patents
Broadband antenna Download PDFInfo
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- CN103427156A CN103427156A CN2012101471101A CN201210147110A CN103427156A CN 103427156 A CN103427156 A CN 103427156A CN 2012101471101 A CN2012101471101 A CN 2012101471101A CN 201210147110 A CN201210147110 A CN 201210147110A CN 103427156 A CN103427156 A CN 103427156A
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- feedback point
- segmentation
- electrically connected
- antenna
- wide frequency
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Abstract
The invention provides a broadband antenna which is installed in a wireless electronic device. The broadband antenna comprises a printed circuit board, a feeding device, a first antenna radiating body and a second antenna radiating body, wherein the first antenna radiating body and the second antenna radiating body are arranged on the surface of the printed circuit board. A gap is formed between the first antenna radiating body and the second antenna radiating body. The first antenna radiating body is of an n-shaped structure having the broadband function and comprises a first middle section, a first subsection and a second subsection, wherein the first subsection and the second subsection are connected with the first middle section, and the length of the first subsection is not equal to that of the second subsection. One end, close to the gap, of the first subsection and one end, close to the gap, of the second antenna radiating body are provided with a first feeding point and a second feeding point respectively. The feeding device is electrically connected with the first feeding point and the second feeding point and conducts feeding on the first antenna radiating body and the second antenna radiating body through the first feeding point and the second feeding point. One end, not electrically connected with the second feeding point, of the feeding device makes contact with a metal structure of the wireless electronic device so as to be grounded.
Description
Technical field
The present invention relates to a kind of wide frequency antenna.
Background technology
The built-in antenna that Fig. 1 is a kind of WiFi wireless device, the operating frequency of being used is the 5GHz frequency range, this antenna is to take the general PIFA form antenna of using as basis.Wherein, the main structure that a1 is the wireless radiation body, a2 is ground structure, and a3 is load point (Feed), and a4 is earth point (shorting), and a5 is nonmetal retaining piece, b1 is for connecting the RF coaxial line between wireless transceiver units and antenna.The operation principle of this antenna is to produce surface current through the high low potential difference between a3 and a4 at a1, when the distribution of surface current just is 1/4 λ of operating frequency, can produce the aerial radiation effect.The built-in antenna that existing wireless product is used mostly adopts identical concept, in structure, nothing more than ground structure, and increases ground structure and will be conducive to increase antenna bandwidth.This antenna sees through ground structure and contacts to reach the purpose that increases ground connection with the metal structure of wireless device.This type antenna is at the lower competence exertion optimum efficiency of enough contact areas (also needing to increase the area of ground structure).Yet the area that increases ground structure can increase the size of antenna undoubtedly, is unfavorable for the miniaturization of antenna.
Summary of the invention
Be necessary to provide a kind of wide frequency antenna that does not need ground structure and can reach the wideband effect.
A kind of wide frequency antenna, it is installed in wireless electron device.Lip-deep the first antenna radiator and the second antenna radiator that wide frequency antenna comprises printed circuit board (PCB), feeder equipment and is arranged at described printed circuit board (PCB).The first antenna radiator and second day beta radiation body form a gap, the first antenna radiator is " n " shape structure with wideband effect, comprise the first interlude and the first segmentation be connected with the first interlude respectively and the second segmentation, and the length of the first segmentation and the second segmentation is unequal.This first segmentation and the second antenna radiator are respectively equipped with the first feedback point and the second feedback point near an end in gap, this feeder equipment and the first feedback point and the second feedback point are electrically connected, and by the first feedback point and the second feedback point to the first antenna radiator and the second antenna radiator feed, this feeder equipment does not contact with ground connection with the metal structure of wireless electron device with an end of the second feedback point electric connection.
Above-mentioned wide frequency antenna, produce two kinds of current paths on the surface of the first antenna radiator and the second antenna radiator by feeder equipment, because of different current path length and then reach the wideband effect.Compared with prior art, this case only contacts with ground connection with the metal structure of wireless electron device by feeder equipment, do not need separately ground structure to be set on wide frequency antenna and not to need the area by increasing ground structure to reach the wideband effect, meet the design concept of wide frequency antenna miniaturization.
The accompanying drawing explanation
Fig. 1 is the structure chart of antenna of the prior art.
Fig. 2 is the plane structure chart of the wide frequency antenna of the first better embodiment.
Fig. 3 is the voltage standing wave ratio resolution chart of wide frequency antenna shown in Fig. 2.
Fig. 4 is the efficiency chart of wide frequency antenna shown in Fig. 2.
Fig. 5 is the plane structure chart of the wide frequency antenna of the second better embodiment.
Fig. 6 is the voltage standing wave ratio resolution chart of wide frequency antenna shown in Fig. 5.
Fig. 7 is the efficiency chart of wide frequency antenna shown in Fig. 5.
The main element symbol description
| |
1、9 |
| Printed circuit board (PCB) | 2 |
| The |
3 |
| The |
33 |
| The |
31 |
| The |
32 |
| The |
4 |
| The |
43 |
| The |
41 |
| The |
42 |
| |
5 |
| The |
51 |
| The |
52 |
Following embodiment further illustrates the present invention in connection with above-mentioned accompanying drawing.
Embodiment
Please refer to shown in Fig. 2, the plane structure chart of its wide frequency antenna that is the first better embodiment 1, wide frequency antenna 1 comprises printed circuit board (PCB) 2, the first antenna radiator 3, the second antenna radiator 4 and feeder equipment 5.The first antenna radiator 3 and the second antenna radiator 4 are arranged at the surface of printed circuit board (PCB) 2, and particularly, the first antenna radiator 3 and the second antenna radiator 4 are to adopt electric conducting material to be printed in the same surface of printed circuit board (PCB) 2.In other embodiments, the first antenna radiator 3 and the second antenna radiator 4 are positioned at the different surfaces of printed circuit board (PCB) 2.
The first antenna radiator 3 roughly is " n " shape structure, comprises the first interlude 33 and the first segmentation 31 be connected with the first interlude 33 respectively and the second segmentation 32.The length of the first segmentation 31 and the second segmentation 32 is unequal.
The second antenna radiator 4 roughly is " n " shape structure, comprises the second interlude 43 and the 3rd segmentation 41 be connected with the second interlude 43 respectively and the 4th segmentation 42.The length of the 3rd segmentation 41 and the 4th segmentation 42 is unequal.The first segmentation 31 of the 3rd segmentation 41 and the first antenna radiator 3 is positioned at the same side of printed circuit board (PCB) 2.The length of the 3rd segmentation 41 is less than the length of the first segmentation 31.Certainly, be understandable that, in other embodiments, the length of the 3rd segmentation 41 also can be more than or equal to the length of the first segmentation 31.
The second interlude 43 and the first interlude 33 approach and one gap, interval.Wherein " n " shape structure of the first antenna radiator 3 has the wideband effect, and the length of finely tuning the first segmentation 31 and the second segmentation 32 can correspondingly obtain different operating frequencies.The end that one end in the first segmentation 31 close gaps of the first antenna radiator 3 is provided with the 3rd segmentation 41 close gaps of the first feedback point 51, the second antenna radiators 4 is provided with the second feedback point 52.Be understandable that, in other embodiments, the second feedback point 52 also can be arranged in the second interlude 43 of the second antenna radiator 4 or the 4th segmentation 42 end near gap.In addition, the second antenna radiator 4 structure etc. that also can be square, in the case, the second feedback point 52 is ends that are arranged on the second antenna radiator 4 near gap.
In other embodiments, feeder equipment 5 is for being arranged at the first metal clips and the second metal clips on printed circuit board (PCB) 2, described the first metal clips and the second metal clips are electrically connected with the first feedback point 51 and the second feedback point 52 respectively, this first metal clips is not electrically connected with an end and wireless transceiver units that the first feedback point 51 is electrically connected, and this second metal clips is not connected with the earth point on printed circuit board (PCB) 2 with the end that the second feedback point 52 is electrically connected.
Be understandable that, feeder equipment 5 also can be the first wire and the second wire, described the first wire and the second wire are electrically connected with the first feedback point 51 and the second feedback point 52 respectively, this first wire is electrically connected with wireless transceiver units with the end that the first feedback point 51 is electrically connected, this second wire with an end of the second feedback point 52 electric connections, with earth point on printed circuit board (PCB) 2, be not connected or with the metal structure electrical contact of wireless electron device.
Above-mentioned wide frequency antenna 1 has the effect of wideband, and is applicable to 5.15GHz～5.85GHz frequency range.The performance that the wide frequency antenna 1 of the present embodiment is described below by resolution chart reaches the specification requirement in application on above-mentioned frequency range.Fig. 3 is voltage standing wave ratio (VSWR) resolution chart of wide frequency antenna shown in Fig. 21, the voltage standing wave ratio that this wide frequency antenna 1 records under the frequency of 5.15GHz, 5.35GHz, 5.42GHz, 5.725GHz and 5.85GHz is respectively 1.3208,1.2339,1.1757,1.2962 and 1.0482, all reaches the design specification requirement that VSWR is less than 2.0.Fig. 4 is the efficiency chart that wide frequency antenna shown in Fig. 21 records under the frequency of 5.15GHz, 5.25GHz, 5.35GHz, 5.47GHz, 5.60GHz, 5.725GHz, 5.785GHz, 5.85GHz.
The various measurement data demonstrations of Fig. 3 to Fig. 4, the technical indicator of wide frequency antenna 1 of the present invention has reached the requirement of industry practicality.
Please refer to Fig. 5, the plane structure chart of its wide frequency antenna that is the second better embodiment 9, the difference of the wide frequency antenna 1 of this wide frequency antenna 9 and the first better embodiment is: feeder equipment 5 is a coaxial cable, comprise the conduction inner shaft core of mutual electrical isolation and outside woven mesh layer (in figure all not label), wherein the inner shaft core is connected with the second feedback point 52, and outside woven mesh layer is connected with the first feedback point 51.The inner shaft core is electrically connected with the wireless transceiver units (not shown) with the end that the second feedback point 52 is electrically connected, outside woven mesh layer not with the metal structure (not shown) electrical contact of an end of the first feedback point 51 electric connections and wireless electron device with ground connection.
Fig. 6 is the voltage standing wave ratio resolution chart of the wide frequency antenna 9 shown in Fig. 5 in this coordinate system, the voltage standing wave ratio that this wide frequency antenna 9 records under the frequency of 5.15GHz, 5.35GHz, 5.42GHz, 5.725GHz and 5.85GHz is respectively 1.1505,1.3188,1.4945,1.7053 and 1.6522, all reaches the design specification requirement that VSWR is less than 2.0.Fig. 7 is the efficiency chart that wide frequency antenna shown in Fig. 59 records under the frequency of 5.15GHz, 5.25GHz, 5.35GHz, 5.47GHz, 5.60GHz, 5.725GHz, 5.785GHz, 5.85GHz.
The various measurement data demonstrations of Fig. 6 to Fig. 7, the technical indicator of wide frequency antenna 9 of the present invention has reached the requirement of industry practicality.Different and " n " the shape structure of the second antenna radiator 4 of the length of wide frequency antenna 1 of the present invention and 9 " n " by the first antenna radiator 3 shape structure and the first and second segmentations 31,32 and the length difference of the third and fourth segmentation 41,42 can make antenna have the effect of wideband, can be applicable in the radio area network electronic installation of IEEE802.11a standard of 5GHz frequency range and in the Mobile Communications electronic installation of various standards.
Above-mentioned wide frequency antenna 1 and 9, produce two kinds of current paths on the surface of the first antenna radiator 3 and the second antenna radiator 4 by feeder equipment 5, because of different current path length and then reach the wideband effect.Compared with prior art, this case only contacts with ground connection with the metal structure of wireless electron device (not shown) by feeder equipment 5, do not need separately ground structure to be set on wide frequency antenna and not to need the area by increasing ground structure to reach the wideband effect, meet the design concept of wide frequency antenna miniaturization.
Those skilled in the art will be appreciated that; above execution mode is only for the present invention is described; and not be used as limitation of the invention; as long as within connotation scope of the present invention, within the appropriate change that above embodiment is done and variation all drop on the scope of protection of present invention.
Claims (10)
1. a wide frequency antenna, it is installed in wireless electron device, this wide frequency antenna comprises printed circuit board (PCB), feeder equipment and lip-deep the first antenna radiator and the second antenna radiator that are arranged at described printed circuit board (PCB), this first antenna radiator and second day beta radiation body form a gap, it is characterized in that: the first antenna radiator is " n " shape structure with wideband effect, comprise the first interlude and the first segmentation be connected with the first interlude respectively and the second segmentation, and the length of the first segmentation and the second segmentation is unequal, this first segmentation and the second antenna radiator are respectively equipped with the first feedback point and the second feedback point near an end in gap, this feeder equipment and the first feedback point and the second feedback point are electrically connected, and by the first feedback point and the second feedback o'clock to the first antenna radiator and the second antenna radiator feed, this feeder equipment does not contact with ground connection with the metal structure of wireless electron device with the end that the second feedback point is electrically connected.
2. wide frequency antenna as claimed in claim 1, it is characterized in that: this second antenna radiator is " n " shape structure with wideband effect, comprise the second interlude and the 3rd segmentation be connected with the second interlude respectively and the 4th segmentation, and the length of the 3rd segmentation and the 4th segmentation is unequal, this second interlude and the first interlude approach and described gap, interval; The second feedback point is located at the 3rd segmentation near on an end in gap.
3. wide frequency antenna as claimed in claim 2, it is characterized in that: the length of the 3rd segmentation is less than the length of the first segmentation.
4. wide frequency antenna as claimed in claim 3, it is characterized in that: described feeder equipment is a coaxial cable, comprises inner shaft core and the outside woven mesh layer at electrical interval; Described inner shaft core and outside woven mesh layer are electrically connected with the first feedback point and the second feedback point respectively, this inner shaft core is electrically connected with wireless transceiver units with the end that the first feedback point is electrically connected, this outside woven mesh layer not with the metal structure electrical contact of an end of the second feedback point electric connection and wireless electron device with ground connection.
5. wide frequency antenna as claimed in claim 3, it is characterized in that: described feeder equipment is a coaxial cable, comprises inner shaft core and the outside woven mesh layer at electrical interval; Described inner shaft core and outside woven mesh layer are electrically connected with the second feedback point and the first feedback point respectively, this inner shaft core is electrically connected with wireless transceiver units with the end that the second feedback point is electrically connected, this outside woven mesh layer not with the metal structure electrical contact of an end of the first feedback point electric connection and wireless electron device with ground connection.
6. wide frequency antenna as claimed in claim 3, it is characterized in that: described feeder equipment is the first metal clips and the second metal clips be arranged on printed circuit board (PCB), described the first metal clips and the second metal clips are electrically connected with the first feedback point and the second feedback point respectively, this first metal clips is not electrically connected with an end and wireless transceiver units that the first feedback point is electrically connected, and this second metal clips is not connected with the earth point on printed circuit board (PCB) with the end that the second feedback point is electrically connected.
7. wide frequency antenna as claimed in claim 3, it is characterized in that: described feeder equipment is the first wire and the second wire, described the first wire and the second wire are electrically connected with the first feedback point and the second feedback point respectively, this first wire is electrically connected with wireless transceiver units with the end that the first feedback point is electrically connected, this second wire with an end of the second feedback point electric connection, with earth point on printed circuit board (PCB), be not connected or with the metal structure electrical contact of wireless electron device.
8. wide frequency antenna as claimed in claim 1, it is characterized in that: this first antenna radiator and second day beta radiation body are positioned at the same surface of printed circuit board (PCB).
9. wide frequency antenna as claimed in claim 1, it is characterized in that: this first antenna radiator and second day beta radiation body are positioned at the different surfaces of printed circuit board (PCB).
10. wide frequency antenna as claimed in claim 2, it is characterized in that: the 3rd segmentation and the first segmentation are positioned at the same side of printed circuit board (PCB).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101471101A CN103427156A (en) | 2012-05-14 | 2012-05-14 | Broadband antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101471101A CN103427156A (en) | 2012-05-14 | 2012-05-14 | Broadband antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103427156A true CN103427156A (en) | 2013-12-04 |
Family
ID=49651584
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012101471101A Pending CN103427156A (en) | 2012-05-14 | 2012-05-14 | Broadband antenna |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103427156A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104412449A (en) * | 2014-03-03 | 2015-03-11 | 华为终端有限公司 | Antenna and wireless terminal |
| WO2015131356A1 (en) * | 2014-03-05 | 2015-09-11 | 华为技术有限公司 | Frame sending and frame detection methods, sending end device, and receiving end device |
| CN109524769A (en) * | 2018-11-27 | 2019-03-26 | 英业达科技有限公司 | The multi-frequency antenna device of more feed-ins |
-
2012
- 2012-05-14 CN CN2012101471101A patent/CN103427156A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104412449A (en) * | 2014-03-03 | 2015-03-11 | 华为终端有限公司 | Antenna and wireless terminal |
| WO2015131320A1 (en) * | 2014-03-03 | 2015-09-11 | 华为终端有限公司 | Antenna and wireless terminal |
| CN104412449B (en) * | 2014-03-03 | 2016-10-12 | 华为终端有限公司 | A kind of antenna and wireless terminal |
| WO2015131356A1 (en) * | 2014-03-05 | 2015-09-11 | 华为技术有限公司 | Frame sending and frame detection methods, sending end device, and receiving end device |
| CN109524769A (en) * | 2018-11-27 | 2019-03-26 | 英业达科技有限公司 | The multi-frequency antenna device of more feed-ins |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20131204 |