CN102110877A - Planar antenna structure and communication terminal using same - Google Patents
Planar antenna structure and communication terminal using same Download PDFInfo
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- CN102110877A CN102110877A CN2010106173701A CN201010617370A CN102110877A CN 102110877 A CN102110877 A CN 102110877A CN 2010106173701 A CN2010106173701 A CN 2010106173701A CN 201010617370 A CN201010617370 A CN 201010617370A CN 102110877 A CN102110877 A CN 102110877A
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- antenna radiator
- antenna structure
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Abstract
The invention provides a planar antenna structure and a communication terminal using the same. The planar antenna structure comprises an earth plate, an antenna radiator and a coupler, wherein the antenna radiator comprises an earth pin connected with the earth plate; the coupler is electromagnetically coupled to the antenna radiator and comprises a feed pin; the antenna radiator is arranged between the coupler and the earth plate, and comprises a through hole; and the feed pin passes through the through hole, and is not electrically contacted with the antenna radiator. Compared with the prior art, the planar antenna structure has larger frequency bandwidth, and is short and particularly suitable for light and thin communication electronic products.
Description
Technical field
The present invention relates to a kind of antenna structure, particularly a kind of plane antenna structure, and the communication terminal of this plane antenna structure of application with frequency bandwidth of broad.
Background technology
At present, each electronic product combines with communication module, and as mobile phone, PDA, panel computer etc., it makes the user can be advantageously connected to Local Area Network, or communicates connection each other.Planar inverted F-shape antenna (Planar Inver ted F Antenna, hereinafter to be referred as PIFA) be a kind of Antenna Design scheme that is widely used in various telecom terminal products, its basic structure is to adopt a planar radiation unit as radiant body, and with a big ground plane as reflecting surface, the pin that two vicinities are arranged on the radiant body is respectively in order to ground connection (Ground) with as feedback point (feed pad).
See also Fig. 1, Fig. 1 is the schematic diagram of a kind of planar inverted-F antenna structure of the prior art.This antenna structure comprises ground plate 11 and antenna radiator 12, and antenna radiator 12 comprises grounding pin 13 and feed pin 14.Ground plate 11 is general to be arranged in parallel with antenna radiator 12, and grounding pin 13 and feed pin 14 are arranged at respectively on the side of antenna radiator 12, and wherein grounding pin 13 is connected with ground plate 11, feed pin 14 with present point (scheming not show) and be connected.But the frequency bandwidth of this antenna structure is always not enough for the modern communications device.
Summary of the invention
At above-mentioned technical problem, the present invention utilizes the technology of Coupled Feedback, allows direct Contact antenna radiant body of feed side itself, but by a coupled structure energy conduction is arrived antenna, and then reaches the purpose of broad frequency range.
Plane antenna structure provided by the invention comprises ground plate, antenna radiator and coupling body.Antenna radiator comprises grounding pin, and grounding pin is connected with ground plate.Coupling body is electromagnetically coupled to antenna radiator, and coupling body comprises feed pin.Wherein, antenna radiator is arranged between coupling body and the ground plate, and antenna radiator comprises through hole, and feed pin is passed through hole, and does not electrically contact with antenna radiator.
According to plane antenna structure of the present invention, coupling body is parallel to antenna radiator, and on the direction perpendicular to antenna radiator, has spacing between the two.
According to plane antenna structure of the present invention, coupling body is a sheet metal.
According to plane antenna structure of the present invention, antenna radiator is parallel to ground plate, and on the direction perpendicular to antenna radiator, has spacing between the two.
According to plane antenna structure of the present invention, offer L shaped, U-shaped or the two fluting on the antenna radiator in conjunction with shape.
According to plane antenna structure of the present invention, an end of feed pin and coupling body electrically connect, and the other end of feed pin is connected with ground plate.
The present invention also provides a kind of communication terminal, comprises aforesaid plane antenna structure.
Compared with prior art, plane antenna structure of the present invention has wideer frequency bandwidth, and antenna structure is short and small, is specially adapted to lightening communications electronics product.
Description of drawings
Fig. 1 is the schematic diagram of a kind of planar inverted-F antenna structure of the prior art.
Fig. 2 is the schematic diagram of the plane antenna structure of one embodiment of the invention.
Fig. 3 is the end view of the plane antenna structure of one embodiment of the invention.
Fig. 4 is the frequency characteristic curve diagram of the plane antenna structure of one embodiment of the invention.
Embodiment
For making purpose of the present invention, structure, feature and function thereof there are further understanding, cooperate embodiment to be described in detail as follows now.
See also Fig. 2 and Fig. 3, Fig. 2 is the schematic diagram of the plane antenna structure of one embodiment of the invention, and Fig. 3 is the end view of the plane antenna structure of one embodiment of the invention.Plane antenna structure provided by the invention comprises ground plate 21, antenna radiator 22 and coupling body 23.Antenna radiator 22 comprises grounding pin 221, and grounding pin 221 is connected with ground plate 21.Coupling body 23 is electromagnetically coupled to antenna radiator 22, and coupling body 23 comprises feed pin 231.Wherein, antenna radiator 22 is arranged between coupling body 23 and the ground plate 21, and antenna radiator 22 comprises through hole 220, and feed pin 231 is passed through hole 220, and does not electrically contact with antenna radiator 22.
Preferably, coupling body 23 is parallel to antenna radiator 22, and on the direction perpendicular to antenna radiator 22, has spacing between the two.Coupling body 23 can be sheet metal.One end of feed pin 231 and coupling body 23 electrically connect, and the other end of feed pin 231 is connected with ground plate 21.
In one embodiment, antenna radiator 22 is parallel to ground plate 21 and is provided with, and on the direction perpendicular to antenna radiator 22, has spacing between the two.Ground plate 21 for example can be the circuit board in the communicator (PCB), is provided with earth point (ground pad) and feedback point (feed pad) above, and earth point is used for being connected with grounding pin 221, and the feedback point is used for being connected with feed pin 231.
In actual applications, often offer L shaped, U-shaped or the two fluting on the antenna radiator 22 in conjunction with shape.As shown in Figure 2, it has a U-shaped and falls the fluting 229 on L shaped combination the (shared one side).About the design and the effect of slotting on the antenna radiator belongs to those skilled in the art's known techniques means, and do not belong to emphasis of the present invention, so do not give unnecessary details at this.
Compared with prior art, electric feed signal of the present invention is passed antenna radiator 22 by feed pin 231, and feed pin 231 does not have electrical Contact antenna radiant body 22, but by coupling body 23 energy conduction is arrived antenna radiator 22, thereby reaches the frequency range response of broad.
Plane antenna structure of the present invention can be applied to kind of a communication terminal, and this communication terminal includes but not limited to mobile phone, PDA, panel computer etc.Plane antenna structure of the present invention has wideer frequency bandwidth, and antenna structure is short and small, is specially adapted to lightening communications electronics product.
See also Fig. 4, Fig. 4 is the frequency characteristic curve diagram of the plane antenna structure of one embodiment of the invention, and its expression reflection coefficient s11 is with the curve of frequency change.Curve 41 is corresponding to antenna structure frequency characteristic shown in Figure 1, and curve 42 is corresponding to the frequency characteristic of antenna structure shown in Figure 2 under the same terms.As can be seen, frequency bandwidth obviously broadens, particularly, in GSM850 (0.85GHz), GSM900 (0.9GHz), GSM1800 (1.8GHz), GSM1900 (1.9GHz) and five frequency ranges of WCDMA2100 (2.1GHz) commonly used, the reflecting system of antenna all under-10dB (decibel), shows to possess goodish coupling and radiant power.
The present invention is described by above-mentioned related embodiment, yet the foregoing description is only for implementing example of the present invention.Must be pointed out that the embodiment that has disclosed does not limit the scope of the invention.On the contrary, change of being done and retouching without departing from the spirit and scope of the present invention all belongs to scope of patent protection of the present invention.
Claims (7)
1. a plane antenna structure comprises ground plate and antenna radiator, and this antenna radiator comprises grounding pin, and this grounding pin is connected with this ground plate, it is characterized in that this plane antenna structure also comprises:
Coupling body is electromagnetically coupled to this antenna radiator, and this coupling body comprises feed pin;
Wherein, this antenna radiator is arranged between this coupling body and this ground plate, and this antenna radiator comprises through hole, and this feed pin is passed this through hole, and does not electrically contact with this antenna radiator.
2. plane antenna structure as claimed in claim 1 is characterized in that: this coupling body is parallel to this antenna radiator, and on the direction perpendicular to this antenna radiator, has spacing between the two.
3. plane antenna structure as claimed in claim 1 is characterized in that: this coupling body is a sheet metal.
4. plane antenna structure as claimed in claim 1 is characterized in that: this antenna radiator is parallel to this ground plate, and on the direction perpendicular to this antenna radiator, has spacing between the two.
5. plane antenna structure as claimed in claim 1 is characterized in that: offer L shaped, U-shaped or the two fluting in conjunction with shape on this antenna radiator.
6. plane antenna structure as claimed in claim 1 is characterized in that: an end of this feed pin and this coupling body electrically connect, and the other end of this feed pin is connected with this ground plate.
7. a communication terminal is characterized in that comprising as any described plane antenna structure among the claim 1-6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010106173701A CN102110877A (en) | 2010-12-31 | 2010-12-31 | Planar antenna structure and communication terminal using same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010106173701A CN102110877A (en) | 2010-12-31 | 2010-12-31 | Planar antenna structure and communication terminal using same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102110877A true CN102110877A (en) | 2011-06-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010106173701A Pending CN102110877A (en) | 2010-12-31 | 2010-12-31 | Planar antenna structure and communication terminal using same |
Country Status (1)
| Country | Link |
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| CN (1) | CN102110877A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104733834A (en) * | 2013-12-23 | 2015-06-24 | 联想(北京)有限公司 | Antenna and mobile terminal provided with same |
| CN104733888A (en) * | 2015-03-11 | 2015-06-24 | 东莞劲胜精密组件股份有限公司 | Built-in type antenna connector and mobile terminal equipment |
| WO2020024432A1 (en) * | 2018-08-01 | 2020-02-06 | 中兴通讯股份有限公司 | Communication device |
| CN112751182A (en) * | 2020-12-28 | 2021-05-04 | Oppo广东移动通信有限公司 | Antenna assembly and electronic equipment |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001013461A1 (en) * | 1999-08-13 | 2001-02-22 | Rangestar Wireless, Inc. | Diversity antenna system for lan communication system |
| CN101093912A (en) * | 2006-06-23 | 2007-12-26 | 仁宝电脑工业股份有限公司 | Structure of plane antenna |
| CN101114733A (en) * | 2006-07-28 | 2008-01-30 | 连展科技电子（昆山）有限公司 | Integrated multi-frequency antenna with wide band function |
-
2010
- 2010-12-31 CN CN2010106173701A patent/CN102110877A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001013461A1 (en) * | 1999-08-13 | 2001-02-22 | Rangestar Wireless, Inc. | Diversity antenna system for lan communication system |
| CN101093912A (en) * | 2006-06-23 | 2007-12-26 | 仁宝电脑工业股份有限公司 | Structure of plane antenna |
| CN101114733A (en) * | 2006-07-28 | 2008-01-30 | 连展科技电子（昆山）有限公司 | Integrated multi-frequency antenna with wide band function |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104733834A (en) * | 2013-12-23 | 2015-06-24 | 联想(北京)有限公司 | Antenna and mobile terminal provided with same |
| CN104733888A (en) * | 2015-03-11 | 2015-06-24 | 东莞劲胜精密组件股份有限公司 | Built-in type antenna connector and mobile terminal equipment |
| WO2020024432A1 (en) * | 2018-08-01 | 2020-02-06 | 中兴通讯股份有限公司 | Communication device |
| CN112751182A (en) * | 2020-12-28 | 2021-05-04 | Oppo广东移动通信有限公司 | Antenna assembly and electronic equipment |
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| PB01 | Publication | ||
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20110629 |