CN101615719A - Antenna assembly - Google Patents
Antenna assembly Download PDFInfo
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- CN101615719A CN101615719A CN200810131762A CN200810131762A CN101615719A CN 101615719 A CN101615719 A CN 101615719A CN 200810131762 A CN200810131762 A CN 200810131762A CN 200810131762 A CN200810131762 A CN 200810131762A CN 101615719 A CN101615719 A CN 101615719A
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Abstract
A kind of antenna assembly comprises a metal level, one first plate aerial, one second plate aerial and a plain conductor.Wherein, first plate aerial has one first earth terminal that is electrically connected to metal level.Second plate aerial has the metal level of being electrically connected to one second earth terminal.Plain conductor is connected between first plate aerial and second plate aerial.In whole start, first plate aerial and second plate aerial be in order to transmitting with the frequency range electromagnetic signal, and the coupling effect between two plate aerials can reduce along with the formation of the loop current of plain conductor.
Description
Technical field
The present invention is about a kind of antenna assembly, and is connected the antenna assembly that plain conductor between two plate aerials reduces the antenna coupling effect especially in regard to a kind of utilization.
Background technology
In recent years in order to satisfy the consumer to computer and various peripheral equipment, the connection requirement that increases day by day between the consumer products device, electronic installation now often must built-in diversified wireless transmission be used, for example: global positioning system (Global Positioning System, GPS), global system for mobile communications (Global System for Mobile Communications, GSM), WLAN (Wireless Local Area Network, WLAN), wireless all can network (Wireless MetropolitanArea Network, WMAN) and Digital Television (Digital TV) etc.
Along with the hardware device and the development of technology development of wireless transmission, systems such as GSM now, WLAN and WMAN gradually adopt multiple-input and multiple-output (Multi Input Multi Output, MIMO) technology.The MIMO technology is the mode that adopts many antennas to operate simultaneously.Compare with the system of traditional single antenna running, mimo system has the characteristics such as confidence level, transmission speed and collection of letters scope of elevator system itself, and becomes the main flow of following radio communication gradually.
Yet in the wireless network based on the MIMO technology, electronic installation must be installed the mechanism that many antennas just can be finished the multipath transmission.In addition, for fear of the coupling effect between the antenna, existing electronic installation reduces the influence of coupling effect mostly with the distance between the increase antenna.This kind practice not only can't be avoided the generation of coupling effect effectively, and has also expended the huge hardware space of electronic installation.
Summary of the invention
The present invention proposes a kind of antenna assembly, comprises a metal level, one first plate aerial, one second plate aerial and a plain conductor.Wherein, first plate aerial has one first earth terminal that is electrically connected to metal level.Second plate aerial has the metal level of being electrically connected to one second earth terminal.Plain conductor is connected between first plate aerial and second plate aerial.In addition, first plate aerial and second plate aerial are in order to transmit together frequency range electromagnetic signal.
The present invention is that the two ends with plain conductor are electrically connected to first plate aerial and second plate aerial respectively, and forms a current circuit and reduce coupling effect between first plate aerial and second plate aerial.Distance between the antenna just can reduce thus, so help the development of antenna assembly aspect microminiaturized.
For above-mentioned feature and advantage of the present invention can be become apparent, preferred embodiment cited below particularly, and conjunction with figs. are described in detail below.
Description of drawings
Fig. 1 is the structural representation according to the antenna assembly of first embodiment of the invention.
Fig. 2 is the equivalent circuit diagram in order to the antenna assembly 100 of key diagram 1 embodiment.
Fig. 3 is the structural representation according to the antenna assembly of second embodiment of the invention.
Fig. 4 is the structural representation according to the antenna assembly of third embodiment of the invention.
Embodiment
In the following description, for presenting consistency, so in different embodiment, if having function and the same or analogous element of structure to use components identical symbol and title to explanation of the present invention.
First embodiment
Fig. 1 is the structural representation according to the antenna assembly of first embodiment of the invention.With reference to Fig. 1, antenna assembly 100 comprises a substrate 110, one first plate aerial 120, one second plate aerial 130 and a plain conductor 140.Wherein, dispose a metal level 111 on the substrate 110, and substrate 110 for example is a printed circuit board (PCB).In addition, first plate aerial 120, second plate aerial 130 and plain conductor 140 all are that the side SD1 with metal level 111 is that benchmark is arranged on the substrate 110.
On overall architecture, first plate aerial 120 and second plate aerial 130 are along the side SD1 of metal level 111 mutually side by side.In addition, first plate aerial 120 and second plate aerial 130 all are electrically connected to the side SD1 of metal level 111.On the other hand, plain conductor 140 is the side SD1 that are parallel to metal level 111, is configured between first plate aerial 120 and second plate aerial 130.Moreover the two ends of plain conductor 140 are electrically connected to first plate aerial 120 and second plate aerial 130 respectively.
In whole start, first plate aerial 120 and second plate aerial 130 are in order to transmit together frequency range electromagnetic signal.It should be noted that two plate aerials 120 and 130 in the process that transmits electromagnetic signal, formed coupling effect between two plate aerials 120 and 130 can reduce significantly by plain conductor 140 formed current circuits.Wherein, 140 pairs two plate aerials 120 of plain conductor and 130 formed current circuits, as described below.
Fig. 2 is the equivalent circuit diagram in order to the antenna assembly 100 of key diagram 1 embodiment.Please be simultaneously with reference to Fig. 1 and Fig. 2, on circuit design, first plate aerial 120 is modelling roughly, and this model is by a radiation resistance (radiation resistance) Ra2 and an inductance L eq2, parallel with one another being formed by connecting of a capacitor C eq2.Similarly, second plate aerial 130 also can carry out modelling, and its model is by a radiation resistance Ra3 and an inductance L eq3, parallel with one another being formed by connecting of a capacitor C eq3.
When the allocation position of two plate aerials 120 and 130 is too close, will forms stray capacitance CST21 and CST22 between two plate aerials 120 and 130, and then cause the coupling effect between two plate aerials 120 and 130.But when plain conductor 140 was electrically connected between two plate aerials 120 and 130, plain conductor 140 can equivalence one-tenth inductance L wire as shown in Figure 2.At this moment, with reference to Fig. 1, plain conductor 140 can form current circuit CL11, and and then reduce coupling effect between two plate aerials 120 and 130.
It should be noted that in first embodiment radiation mechanism of first plate aerial 120 and second plate aerial 130 is also inequality, wherein first plate aerial 120 is made of slot antenna, and second plate aerial 130 is made of inverted F shaped antenna.At this moment, first plate aerial 120 comprises that a upper zone 121 and an earth terminal 123, the second plate aerials 130 then comprise a feed side 131 and an earth terminal 132.
On overall architecture, the earth terminal 123 of first plate aerial 120 is electrically connected to metal level 111, and its upper zone 121 is connected with earth terminal 123 and forms a groove 122.On the other hand, the feed side 131 of second plate aerial 130 is adjacent to the upper zone 121 of first plate aerial 120.Moreover the earth terminal 132 of second plate aerial 130 is electrically connected to metal level 111, and its feed side 131 is electrically connected to plain conductor 140.
What deserves to be mentioned is that first plate aerial 120 and second plate aerial, 130 formed current circuits can be different along with the difference of its radiation mechanism.Wherein, first plate aerial 120 from the formed current circuit of its signal feed-in point P11 shown in label CL13, second plate aerial 130 from the formed current circuit of its signal feed-in point P12 then shown in label CL12.
As can be seen from Figure 1, plain conductor 140 formed current circuit CL11 can have influence on second plate aerial, 130 formed current circuit CL12.Therefore, in first embodiment, antenna assembly 100 also comprises two metal wirings 151 and 152.Wherein, two metal wirings 151 and 152 are located on the substrate 110, and are configured in the both sides of the feed side 131 of second plate aerial 130 respectively.
Moreover two metal wirings 151 and 152 are electrically connected to metal level 111 respectively.Whereby, as shown in Figure 2, on circuit design, two metal wirings 151 and 152 can equivalence be capacitor C m, and then reduce the influence that reflection coefficient caused of current circuit CL11 to second plate aerial 130.In other words, two metal wirings 151 and 152 will help to promote the matching degree of second plate aerial 130.
It should be noted that, as shown in Figure 2, after antenna assembly 100 adds plain conductors 140 and two metal wirings 151 and 152, the reflection coefficient S11 that sees into by the circuit end Port1 of first plate aerial 120 and will be lowered by the reflection coefficient S22 that the circuit end Port2 of second plate aerial 130 sees into.In addition, the isolation between two plate aerials 120 and 130 (coupling coefficient S21) will be enhanced, and then help the lifting of the characteristic of antenna assembly 100.
In addition, as shown in Figure 1, on entity application, the length L H120 of first plate aerial 120 is equal to the length L H130 of second plate aerial 130 approximately.In addition, the length L H140 at the two ends of plain conductor 140 is not more than half of length of first plate aerial 120 or second plate aerial 130.In other words, two plate aerials 120 and 130 can not influence transmission characteristic each other because of the hypotelorism of two antennas in configuration, and then help to reduce the hardware space of antenna assembly 100.
Second embodiment
Fig. 3 is the structural representation according to the antenna assembly of second embodiment of the invention.Please refer to Fig. 3, the main difference of second embodiment and first embodiment is, in a second embodiment, first plate aerial 120 ' is identical with the radiation mechanism of second plate aerial 130 ', and first plate aerial 120 ' and second plate aerial 130 ' are made of an inverted F shaped antenna respectively.
Specifically, in antenna assembly 300, first plate aerial 120 ' comprises a feed side 311 and an earth terminal 312.Similarly, second plate aerial 130 ' comprises a feed side 321 and an earth terminal 322.On configured in one piece, the earth terminal 312 of first plate aerial 120 ' is adjacent to the earth terminal 322 of second plate aerial 130 '.In addition, first plate aerial 120 ' is electrically connected to metal level 111 and plain conductor 140 by its earth terminal 312.Similarly, second plate aerial 130 ' is electrically connected to metal level 111 and plain conductor 140 by its earth terminal 322.
In addition, similar to first embodiment, two plate aerials 120 ' and 130 ' are in order to transmit the electromagnetic signal of same frequency range.And when two plate aerials 120 ' and 130 ' are transmitting in the process of electromagnetic signal, be configured in the plain conductor 140 between two plate aerials 120 ' and 130 ', can reduce formed coupling effect between two plate aerials 120 ' and 130 ' effectively.
The 3rd embodiment
Fig. 4 is the structural representation according to the antenna assembly of third embodiment of the invention.Please refer to Fig. 4, the main difference of the 3rd embodiment and previous embodiment is, in the 3rd embodiment, first plate aerial 120 " with second plate aerial 130 " radiation mechanism identical, and first plate aerial 120 " with second plate aerial 130 " constituted by a slot antenna respectively.
Specifically, in antenna assembly 400, first plate aerial 120 " comprise a upper zone 411 and an earth terminal 413.Wherein, upper zone 411 is connected with earth terminal 413 and forms a groove 412.On the other hand, second plate aerial 130 " comprise a upper zone 421 and an earth terminal 423.Wherein, upper zone 421 is connected with earth terminal 423 and forms a groove 422.
Yet, similar to previous embodiment, two plate aerials 120 " and 130 " in order to transmit the electromagnetic signal of same frequency range.In addition, two plate aerials 120 " and 130 " between dispose plain conductor 140.Whereby, plain conductor 140 formed current circuits can reduce by two plate aerials 120 " and 130 " between formed coupling effect.
In sum, the present invention utilizes the plain conductor be configured between two plate aerials to reduce coupling effect between the antenna.Whereby, the antenna assembly distance that need not increase between the antenna just can be kept the original characteristic of plate aerial.In other words, antenna assembly of the present invention need not expend huge hardware space and dispose inner plate aerial, and then helps the development of antenna assembly in microminiaturization.
Though the present invention with preferred embodiment openly as above; right its is not in order to limit the present invention; have in the technical field under any and know the knowledgeable usually; without departing from the spirit and scope of the present invention; when can doing a little change and retouching, so protection scope of the present invention is as the criterion when looking claims person of defining.
Claims (15)
1. an antenna assembly is characterized in that, comprising:
Metal level;
First plate aerial has first earth terminal, is electrically connected to above-mentioned metal level;
Second plate aerial has second earth terminal, is electrically connected to above-mentioned metal level; And
Plain conductor is connected between above-mentioned first plate aerial and above-mentioned second plate aerial, and wherein above-mentioned first plate aerial and above-mentioned second plate aerial are in order to transmit with the frequency range electromagnetic signal.
2. antenna assembly according to claim 1 is characterized in that, wherein above-mentioned first plate aerial is a slot antenna, and above-mentioned second plate aerial is an inverted F shaped antenna.
3. antenna assembly according to claim 2 is characterized in that, wherein above-mentioned slot antenna comprises:
Above-mentioned first earth terminal is electrically connected to above-mentioned metal level; And
Upper zone, above-mentioned upper zone are connected with above-mentioned first earth terminal and form groove.
4. antenna assembly according to claim 3 is characterized in that, wherein above-mentioned plain conductor is connected in above-mentioned upper zone and the above-mentioned first earth terminal junction.
5. antenna assembly according to claim 2 is characterized in that, wherein above-mentioned inverted F shaped antenna comprises:
Above-mentioned second earth terminal is electrically connected to above-mentioned metal level; And
The feed side, adjacent with above-mentioned second earth terminal.
6. antenna assembly according to claim 5 is characterized in that, wherein above-mentioned plain conductor is connected on the above-mentioned feed side.
7. antenna assembly according to claim 5 is characterized in that, also comprises two metal wirings, be configured in the next door, both sides of above-mentioned feed side respectively, and above-mentioned two metal wirings is electrically connected to above-mentioned metal level.
8. antenna assembly according to claim 1 is characterized in that, wherein above-mentioned first plate aerial and above-mentioned second plate aerial are inverted F shaped antenna.
9. antenna assembly according to claim 8 is characterized in that, wherein above-mentioned inverted F shaped antenna comprises:
Above-mentioned second earth terminal is electrically connected to above-mentioned metal level, and is electrically connected to above-mentioned plain conductor; And
The feed side, adjacent with above-mentioned second earth terminal.
10. antenna assembly according to claim 1 is characterized in that, wherein above-mentioned first plate aerial and above-mentioned second plate aerial are slot antenna.
11. antenna assembly according to claim 10 is characterized in that, wherein above-mentioned slot antenna comprises:
Above-mentioned first earth terminal is electrically connected to above-mentioned metal level; And
Upper zone, above-mentioned upper zone are connected with above-mentioned first earth terminal and form groove.
12. antenna assembly according to claim 1 is characterized in that, the length of wherein above-mentioned first plate aerial equals the length of above-mentioned second plate aerial.
13. antenna assembly according to claim 1 is characterized in that, wherein the length of above-mentioned plain conductor is less than or equal to half of length of above-mentioned first plate aerial or above-mentioned second plate aerial.
14. antenna assembly according to claim 1 is characterized in that, above-mentioned metal level, above-mentioned first plate aerial, above-mentioned second plate aerial and above-mentioned plain conductor are incorporated on the substrate.
15. antenna assembly according to claim 1 is characterized in that, wherein aforesaid substrate is a printed circuit board (PCB).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200810131762 CN101615719B (en) | 2008-06-27 | 2008-06-27 | Antenna device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200810131762 CN101615719B (en) | 2008-06-27 | 2008-06-27 | Antenna device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101615719A true CN101615719A (en) | 2009-12-30 |
| CN101615719B CN101615719B (en) | 2013-09-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200810131762 Active CN101615719B (en) | 2008-06-27 | 2008-06-27 | Antenna device |
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| CN (1) | CN101615719B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103155280A (en) * | 2010-10-15 | 2013-06-12 | 三菱综合材料株式会社 | Antenna-device substrate and antenna device |
| CN103855467A (en) * | 2012-11-30 | 2014-06-11 | 鸿富锦精密工业（深圳）有限公司 | Multiple-input-multiple-output antenna system structure |
| CN104577330A (en) * | 2013-10-09 | 2015-04-29 | 国基电子（上海）有限公司 | MIMO antenna |
| TWI489692B (en) * | 2012-07-26 | 2015-06-21 | Univ Nat Kaohsiung Marine | MIMO dipole antenna |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050062656A1 (en) * | 2003-09-19 | 2005-03-24 | Lee Jae Chan | Internal diversity antenna |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0884796A3 (en) * | 1997-06-11 | 1999-03-24 | Matsushita Electric Industrial Co., Ltd. | Antenna device consisting of bent or curved portions of linear conductor |
| US7109923B2 (en) * | 2004-02-23 | 2006-09-19 | Nokia Corporation | Diversity antenna arrangement |
-
2008
- 2008-06-27 CN CN 200810131762 patent/CN101615719B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050062656A1 (en) * | 2003-09-19 | 2005-03-24 | Lee Jae Chan | Internal diversity antenna |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103155280A (en) * | 2010-10-15 | 2013-06-12 | 三菱综合材料株式会社 | Antenna-device substrate and antenna device |
| TWI489692B (en) * | 2012-07-26 | 2015-06-21 | Univ Nat Kaohsiung Marine | MIMO dipole antenna |
| CN103855467A (en) * | 2012-11-30 | 2014-06-11 | 鸿富锦精密工业（深圳）有限公司 | Multiple-input-multiple-output antenna system structure |
| CN103855467B (en) * | 2012-11-30 | 2018-04-24 | 鸿富锦精密工业（深圳）有限公司 | Multi-input multi-output antenna system structure |
| CN104577330A (en) * | 2013-10-09 | 2015-04-29 | 国基电子（上海）有限公司 | MIMO antenna |
| CN104577330B (en) * | 2013-10-09 | 2018-02-13 | 国基电子（上海）有限公司 | Multi-input/output antenna |
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| Publication number | Publication date |
|---|---|
| CN101615719B (en) | 2013-09-04 |
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