CN110474150B - Antenna without clearance area - Google Patents
Antenna without clearance area Download PDFInfo
- Publication number
- CN110474150B CN110474150B CN201910831195.7A CN201910831195A CN110474150B CN 110474150 B CN110474150 B CN 110474150B CN 201910831195 A CN201910831195 A CN 201910831195A CN 110474150 B CN110474150 B CN 110474150B
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- Prior art keywords
- antenna
- branch
- coupling
- ground
- clearance
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
- H01Q1/2258—Supports; Mounting means by structural association with other equipment or articles used with computer equipment
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- 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
-
- 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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
Abstract
The invention discloses an antenna without a clearance area, which comprises a metal shell, a microwave substrate, a projecting grounding part, a first antenna, a feed-in part, a first coupling antenna and a second coupling antenna. The microwave substrate is accommodated inside the metal case and abuts an edge side of the metal case. The projecting ground extends from the ground plane of the microwave substrate toward the edge side. The first antenna is connected with the convex grounding part, the first branch and the second branch of the first antenna extend in the direction away from each other and are parallel to the edge side, and the first branch is longer than the second branch. The feed-in part extends from the position of the projecting grounding part to the second branch and is connected with the feed-in end of the second branch. The first ground part of the first coupling antenna is connected with the ground plane, and the first end part is used for coupling energy by the first branch. The second ground of the second coupling antenna is connected to the protruding ground, and the second end portion is used for coupling energy by the second branch. The antenna of the invention does not use a clearance area and can save the space occupied by the antenna.
Description
Technical Field
The invention relates to an antenna, in particular to an antenna without a clearance area.
Background
Based on wireless communication technology and the development of internet, terminal devices such as notebook computers, tablet computers, all-in-one computers (all in one computers) and the like have a wireless data transmission function. In order to make the antenna performance meet the wireless specification, it is conventionally necessary to provide an antenna clearance area, such as an area free of metal (or conductor) interference on a circuit board, in order to facilitate the performance of the antenna.
However, the appearance design of the current terminal device is mainly designed to conform to aesthetic concepts such as visual aesthetics, simplicity, and texture, so that the antenna design is mainly a hidden antenna, and the appearance of the terminal device is not affected by hiding the antenna in the housing. However, in order to achieve the purpose of more tactile sensation and beauty, a concept of using a metal shell as a housing is common. As such, the antenna performance is easily affected by the shielding of the metal housing, and the conventional design concept of disposing the antenna clearance area is difficult to be applied to this type of product. In terms of the terminal device, the design requirements of the hidden antenna and the appearance requirements of the metal housing raise the difficulty of antenna design, so it is a challenge for the antenna research and development personnel to design the hidden antenna with the metal housing.
Disclosure of Invention
In view of the above-mentioned drawbacks of the prior art, an object of the present invention is to provide an antenna without a clearance area, which is suitable for a wireless terminal product having a metal housing, and can reduce the shielding effect of the housing and improve the radiation efficiency of the antenna.
The technical scheme of the invention is as follows: an antenna without a clearance zone, comprising:
a metal housing;
the microwave substrate is fixedly connected with the metal shell in a spacing way, accommodated in the inner side of the metal shell and adjacent to the edge side of the metal shell, and provided with a ground plane;
a protruding ground part located on the microwave substrate and extending from the ground plane toward the edge side of the metal shell;
a first antenna located on the microwave substrate and connected to the protruding ground, wherein the first antenna has a first branch, a second branch, a ground branch and a feed end, the first branch and the second branch extend in a direction away from each other, the first branch and the second branch are both parallel to the edge side of the metal housing, the first branch is longer than the second branch, wherein the ground branch is connected to the protruding ground, and the feed end is located on the second branch;
a feeding part extending from the position of the protruding grounding part to the second branch and connected to the feeding end of the second branch, wherein the feeding part and the grounding branch are parallel to each other;
a first coupling antenna located on the microwave substrate, the first coupling antenna having a first grounding portion and a first end portion, the first grounding portion being connected to the ground plane, the first end portion of the first coupling antenna and the first branch maintaining a first coupling distance for coupling energy; and
the second coupling antenna is positioned on the microwave substrate and provided with a second grounding part and a second tail part, the second grounding part is connected with the convex grounding part, and the second tail part and the second branch of the second coupling antenna keep a second coupling distance for coupling energy.
Further, the feed-in part is a center conductor of the coaxial cable.
Further, the microwave substrate has four sides, which are respectively a first side, a second side, a third side and a fourth side, the first side and the second side are opposite to each other, the third side is connected between the first side and the second side, the fourth side is closer to the edge side of the metal shell than the third side, and the fourth side is parallel to the edge side of the metal shell.
Further, the first branch of the first antenna extends toward the first side, and the second branch of the first antenna extends toward the second side.
Further, the first coupling antenna is L-shaped, the first ground portion and the first end portion of the first coupling antenna are connected perpendicularly to each other, and the first end portion of the first coupling antenna and the first branch of the first antenna are parallel to each other.
Further, the second ground portion of the second coupling antenna extends from the protruding ground portion toward the second side of the microwave substrate, the second end portion includes a connection portion and a coupling portion, the connection portion and the second ground portion are perpendicularly connected to each other, the connection portion and the coupling portion are perpendicularly connected to each other, and the coupling portion and the second branch of the first antenna are parallel to each other.
Further, the first branch of the first antenna operates in a 2.4GHz band, and the second branch of the first antenna, the first coupled antenna, and the second coupled antenna operate in a 5GHz band.
Further, the microwave substrate is kept at a distance of 4 mm from the edge side of the metal case.
Further, the metal casing is a casing of a notebook computer, the microwave substrate is connected with a circuit substrate, and the circuit substrate is a screen panel of the notebook computer.
Further, the notebook computer further comprises a clearance-free area symmetrical antenna, and the structure of the clearance-free area symmetrical antenna is symmetrical to the clearance-free area antenna.
The technical scheme provided by the invention has the advantages that the design of the projecting grounding part is utilized to be beneficial to better impedance matching and improving the radiation efficiency of the antenna under the condition of narrow available space of the antenna, the antenna has the characteristics of less occupied internal space of a machine body, low height of the antenna, applicability to at least dual-band wireless transmission and the like, is suitable for wireless terminal products with metal shells, and has high industrial application value.
Drawings
Fig. 1 is a schematic view illustrating an antenna without a clearance area according to an embodiment of the present invention installed in a metal housing.
Fig. 2 is a top view of the antenna without a clearance area according to the embodiment of the present invention mounted on a metal housing.
Fig. 3 is a schematic view illustrating the antenna without a clearance area according to the embodiment of the present invention installed in a metal casing of a notebook computer.
Fig. 4 is a front view of an antenna without a clearance area provided by an embodiment of the present invention.
Fig. 5 is a return loss diagram of an antenna without a clearance zone provided by an embodiment of the present invention.
Detailed Description
The present invention is further illustrated by the following examples, which are not to be construed as limiting the invention thereto.
Referring to fig. 1, 2 and 3, fig. 1 is a schematic diagram illustrating a non-clearance antenna installed in a metal casing according to an embodiment of the present invention, fig. 2 is a top view illustrating the non-clearance antenna installed in the metal casing according to the embodiment of the present invention, fig. 3 is a schematic diagram illustrating the non-clearance antenna installed in the metal casing of a notebook computer according to the embodiment of the present invention, the notebook computer is provided with the non-clearance antenna 1 on an upper side of a screen panel 9, and fig. 1 to 3 are diagrams illustrating the non-clearance antenna according to the embodiment of the present invention by removing a peripheral casing of the screen panel 9, a peripheral casing of the screen panel 9 is a non-metal (or non-conductor), and a back plate portion of the screen is a metal casing, so that a casing of the notebook computer is all metal. The antenna 1 of the present embodiment without a clearance is used for a notebook computer having a metal chassis, for example. Referring to fig. 3 again, the notebook computer in fig. 3 further includes a clearance-free symmetric antenna 1a, and the structure of the clearance-free symmetric antenna 1a is symmetric to the clearance-free antenna 1, so that the notebook computer can use two antennas with symmetric structures at the same time, and the two antennas can achieve better signal transceiving effect. Next, referring to fig. 1, please refer to a detailed structure of the antenna 1 without clearance area shown in fig. 4. The antenna 1 without clearance area includes a metal housing 11, a microwave substrate 12, a protruding ground portion 13, a first antenna 14, a feeding portion 15, a first coupling antenna 16 and a second coupling antenna 17. Referring to fig. 2, the microwave board 12 and the metal case 11 are fixed to each other with a space therebetween, and the microwave board 12 is accommodated inside the metal case 11 and adjacent to the edge side 111 of the metal case 11. When applied to wireless network specifications, the spacing may be as small as 4 millimeters (mm). The microwave substrate 12 has a ground plane 120. The protruding ground 13 is located on the microwave substrate 12 and extends from the ground plane 120 toward the edge 111 of the metal housing 11. The first antenna 14 is located on the microwave substrate 12 and connected to the protruding ground 13, wherein the first antenna 14 has a first branch 141, a second branch 142, a ground branch 143, and a feeding end 144, the first branch 141 and the second branch 142 extend in a direction away from each other, the first branch 141 and the second branch 142 are both parallel to the edge side 111 of the metal housing 11, the first branch 141 is longer than the second branch 142, the ground branch 143 is connected to the protruding ground 13, and the feeding end 144 is located on the second branch 142. The feeding portion 15 extends from the position of the protruding grounding portion 13 to the second branch 142, and is connected to the feeding end 144 of the second branch 142, wherein the feeding portion 15 and the grounding branch 143 are parallel to each other. The first coupling antenna 16 is located on the microwave substrate 12, the first coupling antenna 16 has a first ground portion 161 and a first end portion 162, the first ground portion 161 is connected to the ground plane 120, and the first end portion 162 of the first coupling antenna 16 and the first branch 141 keep a first coupling distance for coupling energy. The second coupling antenna 17 is located on the microwave substrate 12, the second coupling antenna 17 has a second grounding portion 171 and a second end portion 172, the second grounding portion 171 is connected to the protruding grounding portion 13, and the second end portion 172 of the second coupling antenna 17 and the second branch 142 keep a second coupling distance for coupling energy.
Furthermore, the feeding portion 15 is preferably a center conductor of a coaxial cable. Moreover, preferably, the microwave substrate 12 has four sides, which are respectively a first side 121, a second side 122, a third side 123 and a fourth side 124, the first side 121 and the second side 122 are opposite to each other, the third side 123 is connected between the first side 121 and the second side 122, the fourth side 124 is closer to the edge side 111 of the metal shell 11 than the third side 123, and the fourth side 124 is parallel to the edge side 111 of the metal shell 11. The first branch 141 of the first antenna 14 extends towards the first side 121 and the second branch 142 of the first antenna 14 extends towards the second side 122. Furthermore, the first coupling antenna 16 of the present embodiment is, for example, L-shaped, the first ground portion 161 and the first end portion 162 of the first coupling antenna 16 are connected perpendicularly to each other, and the first end portion 162 of the first coupling antenna 16 and the first branch 141 of the first antenna 14 are parallel to each other. The second ground portion 171 of the second coupling antenna 17 extends from the protruding ground portion 13 toward the second side 122 of the microwave substrate 12, the second end portion 172 includes a connection portion 172a and a coupling portion 172b, the connection portion 172a and the second ground portion 171 are perpendicularly connected to each other, the connection portion 172a and the coupling portion 172b are perpendicularly connected to each other, and the coupling portion 172b and the second branch 142 of the first antenna 14 are parallel to each other. Furthermore, when the metal casing 11 is a casing of a notebook computer, the microwave substrate 12 may be connected to a circuit substrate, which may be a screen panel of the notebook computer, such as the screen panel 9 shown in fig. 3.
Referring to the return loss diagram of fig. 5, when the wireless network specification is applied, the first branch 141 of the first antenna 14 operates in the 2.4GHz band, and the second branch 142 of the first antenna 14, the first coupling antenna 16 and the second coupling antenna 17 operate in the 5GHz band. When the length of the microwave substrate 12 is not more than 30 mm and the width is not more than 8.5 mm under the size restriction (that is, the fourth side 124 or the third side 123 is a long side and the length is not more than 30 mm, and the first side 121 or the second side 122 is a short side and the length is not more than 8.5 mm), and the distance between the microwave substrate 12 and the edge side 111 of the metal housing 11 is 4 mm, good impedance matching can be achieved, and the antenna efficiency can reach more than 40%.
In summary, the antenna without a clearance area provided by the embodiments of the present invention is suitable for a wireless terminal product having a metal housing, and the design of the protruding ground portion is favorable for better impedance matching and improving the radiation efficiency of the antenna in a situation that the available space of the antenna is narrow, so that the antenna has the characteristics of less occupied internal space of the body, low height of the antenna, applicability to at least dual-band wireless transmission, and the like, and has a high industrial application value. Particularly, the metal shell terminal device of the local wireless network has the competitiveness of the antenna product market.
Claims (9)
1. An antenna without a clearance area, comprising:
a metal housing;
the microwave substrate is fixedly connected with the metal shell in a spacing way, accommodated in the inner side of the metal shell and adjacent to the edge side of the metal shell, and provided with a ground plane;
a protruding ground part located on the microwave substrate and extending from the ground plane toward the edge side of the metal shell;
a first antenna located on the microwave substrate and connected to the protruding ground, wherein the first antenna has a first branch, a second branch, a ground branch and a feeding end, the first branch and the second branch are connected to the same end of the ground branch, the first branch and the second branch extend in a direction away from each other, the first branch and the second branch are both parallel to the edge side of the metal shell, the first branch is longer than the second branch, the ground branch is connected to the protruding ground, and the feeding end is located on the second branch;
the feed-in part is a central conductor of a coaxial cable, extends from the position of the projecting grounding part to the second branch and is connected with the feed-in end positioned on the second branch, wherein the feed-in part and the grounding branch are arranged in parallel at intervals, and the coaxial cable is superposed on the surface of the projecting grounding part;
a first coupling antenna located on the microwave substrate, the first coupling antenna having a first grounding portion and a first end portion, the first grounding portion being connected to the ground plane, the first end portion of the first coupling antenna and the first branch maintaining a first coupling distance for coupling energy; and
the second coupling antenna is positioned on the microwave substrate and provided with a second grounding part and a second tail part, the second grounding part is connected with the convex grounding part, and the second tail part and the second branch of the second coupling antenna keep a second coupling distance for coupling energy.
2. The antenna without clearance area of claim 1, wherein the microwave substrate has four sides, respectively, a first side, a second side, a third side and a fourth side, the first side and the second side are opposite to each other, the third side is connected between the first side and the second side, the fourth side is closer to the edge side of the metal shell than the third side, and the fourth side is parallel to the edge side of the metal shell.
3. The antenna of claim 2, wherein the first branch of the first antenna extends toward the first side and the second branch of the first antenna extends toward the second side.
4. The antenna without clearance area of claim 3, wherein the first coupling antenna is L-shaped, wherein the first ground portion and the first end portion of the first coupling antenna are connected perpendicular to each other, and wherein the first end portion of the first coupling antenna and the first branch of the first antenna are parallel to each other.
5. The antenna without clearance area as claimed in claim 3, wherein the second ground portion of the second coupling antenna extends from the convex ground portion toward the second side of the microwave substrate, the second end portion includes a connection portion and a coupling portion, the connection portion and the second ground portion are connected perpendicularly to each other, the connection portion and the coupling portion are connected perpendicularly to each other, and the coupling portion and the second branch of the first antenna are parallel to each other.
6. The antenna of claim 1, wherein the first branch of the first antenna operates in a 2.4GHz band, and the second branch of the first antenna, the first coupled antenna and the second coupled antenna operate in a 5GHz band.
7. The clearance-free area antenna as claimed in claim 6, wherein the microwave substrate is spaced apart from the edge side of the metal case by 4 mm.
8. The antenna without clearance area as claimed in claim 1, wherein the metal housing is a housing of a notebook computer, the microwave substrate is connected to a circuit substrate, and the circuit substrate is a screen panel of the notebook computer.
9. The clearance-free area antenna of claim 8, wherein the notebook comprises a clearance-free symmetric antenna, and wherein the clearance-free symmetric antenna is symmetrical to the clearance-free antenna.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910831195.7A CN110474150B (en) | 2019-09-04 | 2019-09-04 | Antenna without clearance area |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910831195.7A CN110474150B (en) | 2019-09-04 | 2019-09-04 | Antenna without clearance area |
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| Publication Number | Publication Date |
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| CN110474150A CN110474150A (en) | 2019-11-19 |
| CN110474150B true CN110474150B (en) | 2021-06-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910831195.7A Active CN110474150B (en) | 2019-09-04 | 2019-09-04 | Antenna without clearance area |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2706885Y (en) * | 2004-05-13 | 2005-06-29 | 富士康(昆山)电脑接插件有限公司 | Multi-frequency aerial |
| TW201021295A (en) * | 2008-11-17 | 2010-06-01 | Wistron Neweb Corp | Multi-band antenna for a wireless communication device |
| CN201540961U (en) * | 2009-11-18 | 2010-08-04 | 精乘科技股份有限公司 | Improvement structure of GPS multifrequency antenna |
| CN109390679A (en) * | 2017-08-03 | 2019-02-26 | 广达电脑股份有限公司 | Dual-band antenna structure |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI396331B (en) * | 2007-04-17 | 2013-05-11 | Quanta Comp Inc | Dual frequency antenna |
| CN103515696A (en) * | 2012-06-19 | 2014-01-15 | 深圳富泰宏精密工业有限公司 | Antenna assembly and wireless communication device therewith |
| TWI528640B (en) * | 2012-11-20 | 2016-04-01 | 啟碁科技股份有限公司 | Wideband antenna and wireless communication device |
| TWI602346B (en) * | 2016-03-09 | 2017-10-11 | 宏碁股份有限公司 | Mobile device |
| CN107293838A (en) * | 2016-03-31 | 2017-10-24 | 宏碁股份有限公司 | The communicator of antenna element with narrow ground plane clearance zone |
| TWI608659B (en) * | 2016-04-26 | 2017-12-11 | 泓博無線通訊技術有限公司 | Integrated module having antenna |
| CN106684526B (en) * | 2017-01-04 | 2019-01-18 | 常熟市泓博通讯技术股份有限公司 | Electronic device with mixed mode antenna |
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2019
- 2019-09-04 CN CN201910831195.7A patent/CN110474150B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2706885Y (en) * | 2004-05-13 | 2005-06-29 | 富士康(昆山)电脑接插件有限公司 | Multi-frequency aerial |
| TW201021295A (en) * | 2008-11-17 | 2010-06-01 | Wistron Neweb Corp | Multi-band antenna for a wireless communication device |
| CN201540961U (en) * | 2009-11-18 | 2010-08-04 | 精乘科技股份有限公司 | Improvement structure of GPS multifrequency antenna |
| CN109390679A (en) * | 2017-08-03 | 2019-02-26 | 广达电脑股份有限公司 | Dual-band antenna structure |
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| CN110474150A (en) | 2019-11-19 |
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