CN101931689A - Wireless communication device - Google Patents
Wireless communication device Download PDFInfo
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- CN101931689A CN101931689A CN2009103036771A CN200910303677A CN101931689A CN 101931689 A CN101931689 A CN 101931689A CN 2009103036771 A CN2009103036771 A CN 2009103036771A CN 200910303677 A CN200910303677 A CN 200910303677A CN 101931689 A CN101931689 A CN 101931689A
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- antenna
- communication device
- coupling part
- feeding portion
- radio communication
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Abstract
The invention relates to a wireless communication device which comprises a main circuit board, an antenna connected with the main circuit board and a coupler, wherein the antenna comprises a first feed-in part and a second feed-in part; the coupler comprises a first coupling part and a second coupling part; the first coupling part is opposite to the first feed-in part, and the second coupling part is vertical to the first coupling part; and the coupleris mutually coupled with the antenna so as to improve the radiation pattern of the antenna.
Description
Technical field
The present invention relates to a kind of radio communication device, relate in particular to a kind of radio communication device with preferable radiation pattern.
Background technology
Along with developing rapidly and the raising day by day of people's living standard of wireless communication technology, the information processing technology, (personal digital assistant PDA) waits portable radio communication device to become the indispensable part of people's daily life for mobile phone, personal digital assistant.
In these radio communication devices, be used for launching, receiving the antenna assembly of radio wave, beyond doubt one of most important assembly in the radio communication device.
Existing radio communication device is renovated or the mobile phone of slip lid is an example with one.The general top that all this antenna assembly can be arranged on this radio communication device is to avoid the hand-held radiation benefit that can influence this antenna assembly.So, when this mobile phone closed lid or do not slip off, an earth terminal that is arranged on this radio communication device can exert an influence to the distribution of this antenna current.Promptly this earth terminal will make this antenna produce downward radiation, and difficulty provides radiation upwards, causes the radiation pattern of this antenna top relatively poor.
Summary of the invention
In view of this, be necessary to provide a kind of radio communication device with preferable radiation pattern.
A kind of radio communication device, it comprises a circuit main board, an antenna that is connected with this circuit main board and a male part, this antenna comprises one first feeding portion and one second feeding portion, this male part comprises one first coupling part and one second coupling part, first coupling part is relative with first feeding portion, second coupling part is vertical mutually with first coupling part, and this male part and this antenna intercouple, to improve the radiation pattern of this antenna.
Compared to conventional art, radio communication device of the present invention is by being provided with a male part, and by first coupling part in this male part and second coupling part vertically are provided with mutually, and make this first coupling part relative with one first feeding portion in this antenna, make this male part be equivalent to another antenna, and mate mutually with this antenna impedance, thereby this antenna and male part produce resonance, improved the radiation pattern of this antenna, overcome radio communication device in the conventional art close radiation pattern when covering relatively poor etc. problem.
Description of drawings
Fig. 1 is the structural representation of radio communication device in the preferred embodiment of the present invention.
Fig. 2 is the structural representation at another visual angle of radio communication device shown in Figure 1.
Fig. 3 is the electromagnetic radiation field pattern figure of radio communication device in the preferred embodiment of the present invention.
Fig. 4 is the voltage standing wave ratio schematic diagram of radio communication device in the preferred embodiment of the present invention.
Electromagnetic radiation field pattern figure when Fig. 5 changes the length of male part for radio communication device in the preferred embodiment of the present invention.
Embodiment
See also Fig. 1, radio communication device 100 of the present invention can (personaldigital assistant PDA) etc., be that example is illustrated with a mobile phone in the present embodiment for mobile phone, personal digital assistant.
See also Fig. 1 and Fig. 2, this radio communication device 100 comprises a circuit main board 10, an antenna 20 and one and these antenna 20 corresponding male parts 30.This antenna 20 is connected with this circuit main board 10, and to transmit, to exchange radio data signal, this male part 30 is a metal material in order to emission, reception radio wave, and itself and this antenna 20 intercouples.
This circuit main board 10 is arranged in the housing (figure does not show) of radio communication device 100, it is provided with a signal feed side 12 and an earth terminal 14, this signal feed side 12 is used to receive the signal of these antenna 20 feedbacks and send a signal to this antenna 20, and this earth terminal 14 is that this circuit main board 10 plays the ground connection effect.
This antenna 20 can be an existing loop aerial, and it is used to receive the signal of this circuit main board 10 and it is sent, and the signal that will receive from the external world is delivered to this circuit main board 10 and handled simultaneously.This antenna 20 comprise one with the corresponding signal feed-in part in this signal feed side 12 22, one and these earth terminal 14 corresponding grounding parts 24, one first feeding portion 26 and one second feeding portion 28.This signal feed-in part 22 is roughly rectangle plates, the one edge is connected with this signal feed side 12 by lead etc., is used to receive signal that this circuit main board 10 transmits and will gives this circuit main board 10 from the signal feedback that first feeding portion 26 and second feeding portion 28 receive.This grounding parts 24 is connected with this earth terminal 14.
The roughly rectangular panel-like structure of this first feeding portion 26, its length variations can be adjusted the impedance of this antenna 20.This first feeding portion 26 is formed in this plane, signal feed-in part 22 place bending by the edge-perpendicular away from this signal feed side 12 in this signal feed-in part 22, and extends to grounding parts 24 place directions.The roughly rectangular panel-like structure of this second feeding portion 28, its length is shorter than the length of this first feeding portion 26 slightly.Second feeding portion 28 is in same plane with this signal feed-in part 22, and with this grounding parts 24 in away from another side edge of this earth terminal 14.This second feeding portion 28 is extended by grounding parts 24 and forms, and to first feeding portion, 26 place directions extend and vertical connection in this first feeding portion 26.
This male part 30 roughly is the inverted "L" shaped structure, and what it was unsettled is fixed in this housing, and relative with this antenna 20, it is used for when this antenna 20 of signal feed-in, be equivalent to another antenna, and intercouple, thereby improve the radiation pattern of this antenna 20 with this antenna 20.For making this antenna 20 and the coupling preferably mutually of this male part 30, the length of this male part 30 is about 1/2nd of these antenna 20 received signal wavelength in the present embodiment, and this male part 30 and this antenna 20 are at intervals.This male part 30 specifically comprises one first coupling part 32 and one second coupling part 34.The roughly rectangular sheet of this first coupling part 32, it is relative with this first feeding portion 26, and with these first feeding portion, 26 place plane parallel.This second coupling part 34 is formed perpendicular to this plane, first coupling part, 32 place bending by the end near this signal feed side 12 in this first coupling part 32.This second coupling part 34 and this antenna 20 and circuit main board 10 are positioned at the same side of this first coupling part 32 jointly.
In addition, the key dimension of this male part 30 is in this radio communication device 100: the length of this first coupling part 32 is 47mm, the length 37mm of second coupling part 34, and its both width equate, are 8mm.This first coupling part 32 and second coupling part 34 can be adjusted as required with the spacing of this antenna 20, and in the present embodiment, this first coupling part 32 is 4mm with the spacing of this antenna 20, and this second coupling part 34 is 3mm with the spacing of this antenna 20.
During these antenna 20 work, one radiofrequency signal enters from signal feeding portion 22, because this male part 30 is equivalent to an antenna, and its length is about 1/2nd of these antenna 20 received RF signal wavelength, so both impedances are mated mutually, this antenna 20 produces resonance with this male part 30, thereby improves the radiation pattern of this antenna 20.
See also Fig. 3, the electromagnetic radiation field pattern figure of this antenna 20 that records when dotted line 32 is not provided with male part 30 for radio communication device in the prior art among the figure.The electromagnetic radiation field pattern figure of this antenna 20 that solid line 34 records when being provided with male part 30 in the present embodiment among the figure.By test result as can be known, after this radio communication device 100 increases by a male part 30, because this male part 30 is equivalent to an antenna, and mate mutually with these antenna 20 impedances, and then this antenna 20 produces resonance with male part 30, thereby improve the radiation pattern of this antenna 20, even this antenna 20 has preferable radiation pattern.
This radio communication device 100 that solid line 42 and dotted line 44 are respectively preferred embodiment of the present invention in shown in Figure 4 is uncapped under the situation and is closed antenna 20 voltage standing wave ratioes (Voltage Standing Wave Ratio, VSWR) test result analysis figure under the situation of lid.Generally speaking, to be considered as the antenna acceptance rate near 2 the time good when voltage standing wave ratio.As shown in Figure 4, when the resonance frequency of this antenna 20 was 1640MHz, the voltage standing wave ratio of this antenna 20 under the situation of uncapping was 2.06, was 1.99 in the voltage standing wave ratio of closing under the situation of lid, and both are all near 2.So can think this antenna 20 after increasing by a male part 30, no matter uncap or close lid, the acceptance rate of this antenna 20 is all good.
In addition, through experiment test as can be known, when the resonance frequency of this antenna 20 is 1640MHz, this radio communication device 100 is respectively 88.6% and 78.5% in the radiation efficiency of uncapping and close under the situation of lid, promptly this antenna 20 is after increasing by a male part 30, no matter uncap or close lid, this antenna 20 all has preferable radiation efficiency.
When the length that is appreciated that this first coupling part 32 was fixed as 47mm, the length range of this second coupling part 34 was 2737mm.When the length of second coupling part 34 was fixed as 37mm, the length range of this first coupling part 32 was 3747mm.See also Fig. 5, wherein, dotted line 52 is the radiation pattern of this antenna 20 of recording among Fig. 5 when the length of this first coupling part 32 and second coupling part 34 is 37mm, and solid line 54 is the radiation pattern of this antenna 20 of recording when the length of this first coupling part 32 and second coupling part 34 is respectively 47mm and 27mm.The radiation pattern that records under these both situations all satisfies the requirement of radio communication.From this test result as can be known, when the fixing wherein length of a male part, when the reduction of the length of another male part was 10mm to the maximum, this antenna 20 still had good radiation pattern.That is, can regulate the radiation pattern of this antenna 20 by the length of regulating this first coupling part 32 and second coupling part 34.
Be appreciated that and the distance between this signal feed-in part 22 and the grounding parts 24 can also be regulated, be applied to different wireless communications environments to satisfy.
Obviously, radio communication device 100 of the present invention is by being provided with a male part 30, and by first coupling part 32 in this male part 30 and second coupling part 34 vertically are provided with mutually, and make this first coupling part 32 relative with one first feeding portion 26 in this antenna 20, make this male part 30 be equivalent to another antenna, and mate mutually with these antenna 20 impedances, thereby this antenna 20 produces resonance with this male part 30, improved the radiation pattern of this antenna 20, overcome that radio communication device closes the relatively poor problem of radiation pattern when covering in the conventional art.
In addition, those skilled in the art also can make various modifications, interpolation and the replacement on other forms and the details in claim of the present invention scope of disclosure and spirit.Certainly, these all should be included within the present invention's scope required for protection according to the variations such as various modifications, interpolation and replacement that spirit of the present invention is made.
Claims (9)
1. radio communication device, it comprises a circuit main board and an antenna that is connected with described circuit main board; It is characterized in that: described antenna comprises one first feeding portion and one second feeding portion, described radio communication device also comprises a male part, described male part comprises one first coupling part and one second coupling part, first coupling part is relative with first feeding portion, second coupling part is vertical mutually with first coupling part, described male part and described antenna intercouple, to improve the radiation pattern of described antenna.
2. radio communication device as claimed in claim 1, it is characterized in that: described circuit main board comprises a signal feed side and an earth terminal, described signal feed side is used to receive the signal of described antenna feedback and send a signal to described antenna, and described earth terminal is described circuit main board ground connection.
3. radio communication device as claimed in claim 2, it is characterized in that: described antenna also comprises a signal feed-in part and a grounding parts, described signal feed-in part is connected with described signal feed side, grounding parts is connected with earth terminal, and described signal feed-in part is used for the signal of receiving circuit mainboard transmission and gives described circuit main board with the signal feedback that receives.
4. radio communication device as claimed in claim 3, it is characterized in that: described first feeding portion is by bending forms in plane, described signal feed-in part place away from the edge-perpendicular of described signal feed side in the described signal feed-in part, and extend to described grounding parts place direction, the adjustable in length of described first feeding portion, thus the impedance of described antenna adjusted.
5. radio communication device as claimed in claim 3, it is characterized in that: described second feeding portion is formed by described grounding parts extension, and to the described first feeding portion place direction extend and vertical connection in described first feeding portion, described second feeding portion and described signal feed-in part are in same plane, and the length of described second feeding portion is less than the length of described first feeding portion.
6. radio communication device as claimed in claim 2, it is characterized in that: described first coupling part and the described first feeding portion place plane parallel, described second coupling part is formed perpendicular to the bending of plane, the described first coupling part place by the end near described signal feed side in described first coupling part, and described second coupling part and described antenna and described circuit main board are positioned at the same side of described first coupling part.
7. radio communication device as claimed in claim 1 is characterized in that: the length of described male part is 1/2nd of described antenna receiving signal wavelength.
8. radio communication device as claimed in claim 1 is characterized in that: described antenna is a loop aerial.
9. radio communication device as claimed in claim 1 is characterized in that: described male part is made by metal sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910303677.1A CN101931689B (en) | 2009-06-25 | 2009-06-25 | Wireless communication device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910303677.1A CN101931689B (en) | 2009-06-25 | 2009-06-25 | Wireless communication device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101931689A true CN101931689A (en) | 2010-12-29 |
| CN101931689B CN101931689B (en) | 2013-03-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910303677.1A Expired - Fee Related CN101931689B (en) | 2009-06-25 | 2009-06-25 | Wireless communication device |
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| Country | Link |
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| CN (1) | CN101931689B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103688406A (en) * | 2011-06-01 | 2014-03-26 | 讯宝科技公司 | Low-profile multiband antenna for wireless communication device |
| WO2015196429A1 (en) * | 2014-06-26 | 2015-12-30 | 华为技术有限公司 | Electronic device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101110497A (en) * | 2006-07-19 | 2008-01-23 | 鸿富锦精密工业（深圳）有限公司 | Antenna |
-
2009
- 2009-06-25 CN CN200910303677.1A patent/CN101931689B/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103688406A (en) * | 2011-06-01 | 2014-03-26 | 讯宝科技公司 | Low-profile multiband antenna for wireless communication device |
| CN103688406B (en) * | 2011-06-01 | 2016-07-06 | 讯宝科技公司 | The Low-profile multiband antenna of Wireless Telecom Equipment |
| WO2015196429A1 (en) * | 2014-06-26 | 2015-12-30 | 华为技术有限公司 | Electronic device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101931689B (en) | 2013-03-13 |
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