CN201063610Y - Radio device - Google Patents
Radio device Download PDFInfo
- Publication number
- CN201063610Y CN201063610Y CNU2007200536616U CN200720053661U CN201063610Y CN 201063610 Y CN201063610 Y CN 201063610Y CN U2007200536616 U CNU2007200536616 U CN U2007200536616U CN 200720053661 U CN200720053661 U CN 200720053661U CN 201063610 Y CN201063610 Y CN 201063610Y
- Authority
- CN
- China
- Prior art keywords
- antenna
- circuit board
- metal shielding
- point
- shielding casing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses a wireless device which comprises a metal shielding casing, an insulating casing, a circuit board and an aerial, wherein the metal shielding casing and the insulating casing are combined to receive the circuit board and the aerial; the circuit board is provided with a signal feed-in point as well as a first earthing point and a second earthing point which are adjacent to the signal feed-in point; the aerial has a feed-in part connected with the signal feed-in point and an earthing part. The first earthing point and the second earthing point are respectively connected with the metal shielding casing through a first electric conductor and a second electric conductor to form a double-electric property contact point and increase the earthing area of the circuit board; the earthing part of the aerial is connected with the metal shielding casing to increase the earthing area of the aerial. Therefore, the circuit board and the aerial are respectively connected with the metal shielding casing through the first electric conductor and the second electric conductor and the earthing part to increase the earthing area, thereby the wireless device obtains better aerial efficiency and gain.
Description
Affiliated technical field
The utility model relates to a kind of wireless device, relates in particular to a kind of circuit board of wireless device and the ground structure of antenna, makes the antenna of wireless device have better performance.
Background technology
Along with science and technology development, the volume of electronic product is more and more littler, function is more and more complete and price is more and more cheaper, thereby be subjected to liking of more and more people, especially with our being most widely used of closely bound up mobile communication product of living, along with current panoramic communication product is constantly weeded out the old and bring forth the new, people are also more and more higher for the functional requirement of communication product, whether communication product provides more convenient, more efficient and more function and service, the tight important pointer of estimating this communication product that so become.
Along with radio communication product emerge in multitude on the market, the primary clustering antenna of playing an important role in communication process also is subjected to the attention of manufacturer, in general wireless telecommunication system, the effect of antenna is used for transmitting and receiving electromagnetic wave energy, whether its electrical characteristic well is enough to influence the quality of communication, and pointer as radio communication product transmitting-receiving signal strength quality, therefore for present a lot of radio communication product and merchants of antenna maker, the electric wave reception or the launching effect of trying every possible means invariably and improving antenna, and the quality of lifting product.
Along with radio communication product develops towards short and small direction frivolous and that carry easily, built-in antenna and its antenna performance also become one of important consideration, in existing radio communication product, its inside is placed with assemblies such as antenna battery radio-frequency module mostly, owing to influencing because distance too closely produces bad inductance coupling between antenna and other assembly, and then cause antenna performance to reduce, also make wireless communication apparatus when the configuration antenna, need to consider the influence of antenna surrounding environment, increased the degree of difficulty of Antenna Design.In order to reduce the degree of inductance coupling, present radio communication product is arranged at antenna mostly on the circuit board and the grounding parts of antenna is electrically connected the ground connection of circuit board, increases the contact area of antenna by the ground connection of circuit board, and the inductance coupling influence is reduced.
Fig. 7 has disclosed a kind of existing wireless communication apparatus 900, this wireless communication apparatus 900 has a shielding casing 90 and one and the plastic casing 91 of shielding casing 90 combination, shielding casing 90 is accommodated a printed circuit board (PCB) 92 after making up with plastic casing 91, printed circuit board (PCB) 92 is provided with communication module 93 and antenna module 94, antenna module 94 has a load point 95 and an earth point 96, the load point 95 of antenna module 94 electrically connects communication module 93, and the earth point 96 of antenna module 94 electrically connects the ground connection of printed circuit board (PCB) 93.Therefore, antenna module 94 can increase its contact area via the ground connection of printed circuit board (PCB) 92, and the inductance coupling influence is reduced.
But, after the load point 95 of antenna module 94 and earth point 96 and printed circuit board (PCB) 92 form and electrically connect, be arranged on the printed circuit board (PCB) 92 and form the electronic building brick that electrically connects and all form capacitive character or inductive according to separately electrical characteristic with the load point 95 of antenna module 94 and earth point 96.When antenna module 94 operates in wireless telecommunications, the capacitive character that the electronic building brick of above-mentioned electric connection antenna module 94 has or inductive electrical characteristic all can influence the electrical characteristic of antenna module 94, so the antenna performance of antenna module 94 and antenna gain are influenced by it all can and reduce.In addition, along with the miniaturization of wireless communication apparatus 900, the area of printed circuit board (PCB) 92 is reduction day by day also, and therefore, the contact area of the printed circuit board (PCB) 92 of wireless communication apparatus 900 is reduction day by day also.After antenna module 94 and printed circuit board (PCB) 92 electrically connected, antenna performance and antenna gain that the contact area of printed circuit board (PCB) 92 also dwindles antenna module 94 all caused bad influence.
So, how designing a kind of circuit board of wireless communication apparatus and ground structure of antenna of improving, the antenna performance that further promotes antenna is one of present goal in research of radio communication product and the merchant of antenna maker.
The utility model content
Main purpose of the present utility model is to provide a kind of wireless device, and this wireless device can increase the contact area of antenna and promote antenna performance and antenna gain.
For achieving the above object, wireless device provided by the utility model, have metal shielding casing, insulation shell, circuit board and antenna, metal shielding casing and insulation shell combination are also accommodated circuit board and antenna, circuit board is provided with first earth point and second earth point of signal feed-in point and adjacent signal load point, and antenna has the grounding parts that a feeding portion and that electrically connects the signal feed-in point of circuit board electrically connects the metal shielding casing.First earth point of circuit board and second earth point electrically connect the metal shielding casing by first electric conductor and second electric conductor respectively.
As shown in the above description, wireless device of the present utility model electrically connects the metal shielding casing to increase the antenna ground area and to promote antenna performance and antenna gain by the grounding parts of antenna.In addition, electrically connect first earth point and second earth point and the metal shielding casing of circuit board and form two electrically contact points by first electric conductor and second electric conductor, to increase the contact area of circuit board, further promote the antenna performance and the antenna gain of antenna.
Description of drawings
In Figure of description:
Fig. 1 is the three-dimensional exploded view of the utility model wireless device.
Fig. 2 is that the antenna ground portion of the utility model wireless device electrically connects the metal shielding casing, and circuit board covers the Smith chart (Smith Chart) that hull shape becomes single electrical contact point with metal.
Fig. 3 is that the antenna ground portion of the utility model wireless device electrically connects the metal shielding casing, and circuit board covers voltage standing wave ratio (Voltage Standing WaveRatio, the VSWR) resolution chart that hull shape becomes single electrical contact point with metal.
Fig. 4 is that the antenna ground portion of the utility model wireless device electrically connects the metal shielding casing, and circuit board covers the Smith charts (Smith Chart) that hull shape becomes two electrical contact points with metal.
Fig. 5 is that the antenna ground portion of the utility model wireless device electrically connects the metal shielding casing, and circuit board covers voltage standing wave ratio (Voltage Standing WaveRatio, the VSWR) resolution charts that hull shape becomes two electrical contact points with metal.
Fig. 6 is that the grounding parts of the antenna of the utility model wireless device electrically connects the metal shielding casing, and circuit board forms single electrically contact point with the metal shielding casing and circuit board forms pair antenna performance comparison diagrams of electrical contact points with the metal shielding casing.
Fig. 7 is the three-dimensional exploded view of the wireless communication apparatus of prior art.
The description of reference numerals of each element is as follows among the figure:
Second electric conductor, 10 insulation shells 2
3 first 30 of circuit boards
Second 31 wireless communication module 32
Signal feed-in point 33 first earth points 34
Second earth point, 35 first electric conductors 36
Printed circuit board (PCB) 92 communication modules 93
Earth point 96
Embodiment
By describing technology contents of the present utility model, structural feature in detail, realized purpose and effect, below give explanation especially exemplified by embodiment and conjunction with figs. are detailed.
See also Fig. 1, wireless device 100 of the present utility model has metal shielding casing 1, insulation shell 2, circuit board 3 and antenna 4, and metal shielding casing 1 is used to accommodate circuit board 3 and antenna 4 with insulation shell 2 combinations.Circuit board 3 has relative first 30 and second 31, and first 30 of circuit board 3 is provided with wireless communication module 32 and signal feed-in point 33, second 31 first earth point 34 and second earth point 35 that is provided with near signal feed-in point 33 of circuit board 3.
After metal shielding casing 1 and circuit board 3 make up, form electric connection by first electric conductor 36 between first earth point 34 and the metal shielding casing 1, electrically connect by 10 formation of second electric conductor between second earth point 35 and the metal shielding casing 1.In the present embodiment, first electric conductor 36 is a conducting strip, and second electric conductor 10 is for being arranged on the elastic conductor of metal shielding casing 1 inwall.Therefore, circuit board 3 forms two electrically contact points with first electric conductor 36 and second electric conductor 10 with metal shielding casing 1 respectively by first earth point 34 and second earth point 35.
Therefore, antenna 4 can increase its contact area via metal shielding casing 1, promotes its antenna performance and antenna gain.In addition, circuit board 3 forms two electrically contact points with metal shielding casing 1 and increases the contact area of circuit board 3, therefore can reduce electric coupling influence that 3 pairs of antennas 4 of circuit board are produced and antenna performance and the antenna gain that promotes antenna 4.
See also Fig. 2, for the grounding parts 41 of the antenna 4 of wireless device 100 of the present utility model electrically connects metal shielding casings 1, and first earth point 34 of circuit board 3 and metal shielding casing 1 form the Smith chart of wireless device 100 input impedance of the present utility model behind single electrically contact point.When antenna 4 operates in 2.4GHz, matched impedance is 50.688 Ω (the real part numerical value of number in the figure 1), when antenna 4 operates in 2.441GHz, matched impedance is 42.556 Ω (the real part numerical value of number in the figure 2), when antenna 4 operated in 2.48GHz, matched impedance was 25.936 Ω (the real part numerical value of number in the figure 3).
See also Fig. 3, for the grounding parts 41 of the antenna 4 of wireless device 100 of the present utility model electrically connects metal shielding casings 1, and first earth point 34 of circuit board 3 forms single electrically voltage standing wave ratio (Voltage Standing Wave Ratio, the VSWR) resolution chart of contact point with metal shielding casing 1.When antenna 4 operates in 2.4GHz, voltage standing wave ratio is 1.8073 (number in the figure 1), and when antenna 4 operated in 2.441GHz, voltage standing wave ratio was 1.2503 (number in the figure 2), when antenna 4 operated in 2.48GHz, voltage standing wave ratio was 1.8947 (number in the figure 3).
See also Fig. 4, for the grounding parts 41 of the antenna 4 of wireless device 100 of the present utility model electrically connects metal shielding casings 1, and first earth point 34 of circuit board 3 and second earth point 35 and metal shielding casing 1 form wireless device 100 input impedance of the present utility model behind two electrically contact points, Smith chart.When antenna 4 operates in 2.4GHz, matched impedance is 66.944 Ω (the real part numerical value of number in the figure 1), when antenna 4 operates in 2.441GHz, matched impedance is 43.861 Ω (the real part numerical value of number in the figure 2), when antenna 4 operated in 2.48GHz, matched impedance was 23.778 Ω (the real part numerical value of number in the figure 3).
Please join Reading Fig. 5, for the grounding parts 41 of the antenna 4 of wireless device 100 of the present utility model electrically connects metal shielding casings 1, and first earth point 34 of circuit board 3 and second earth point 35 form two electrically voltage standing wave ratio (Voltage Standing Wave Ratio, the VSWR) resolution charts of contact point with metal shielding casing 1.When antenna 4 operates in 2.4GHz, voltage standing wave ratio is 1.6206 (number in the figure 1), and when antenna 4 operated in 2.441GHz, voltage standing wave ratio was 1.1823 (number in the figure 2), when antenna 4 operated in 2.48GHz, voltage standing wave ratio was 2.1020 (number in the figure 3).
Via after Fig. 2 to Fig. 5 explanation as can be known, grounding parts 41 electric connection metal shielding casings 1 when antenna 4, and when first earth point 34 of circuit board 3 and metal shielding casing 1 form single electrically contact point, antenna 4 operates in the matched impedance of 2.4GHz, 2.441GHz and 2.48GHz all near central value 50 Ω, and the voltage standing wave ratio that antenna 4 operates in 2.4GHz, 2.441GHz and 2.48GHz is all in minimum value below 2.Grounding parts 41 electric connection metal shielding casings 1 when antenna 4, and when first earth point 34 of circuit board 3 and second earth point 35 and metal shielding casing 1 form two electrically contact point, antenna 4 operates in the matched impedance of 2.4GHz, 2.441GHz and 2.48GHz all near central value 50 Ω, and antenna 4 operates in the voltage standing wave ratio of 2.4GHz, 2.441GHz and 2.48GHz all very near minimum value 2.
Please join Reading Fig. 6, for the grounding parts 41 of the antenna 4 of wireless device 100 of the present utility model electrically connects metal shielding casings 1, and circuit board 3 forms single electrically contact point with metal shielding casing 1 and circuit board 3 forms two electrically antenna performance comparison diagrams of contact points with metal shielding casing 1.When the grounding parts 41 of the antenna 4 of wireless device 100 electrically connects metal shielding casings 1, and when circuit board 3 and metal shielding casing 1 formed single electrically contact point, antenna 4 was between 41 33 percent to percent in the antenna performance of 2.4GHz to 2.48GHz frequency band.
When the grounding parts 41 of the antenna 4 of wireless device 100 electrically connects metal shielding casings 1, and when circuit board 3 and metal shielding casing 1 formed two electrically contact point, antenna 4 was between 62 46 percent to percent in the antenna performance of 2.4GHz to 2.48GHz frequency band.Therefore, when the grounding parts 41 of antenna 4 electrically connects metal shielding casings 1, and circuit board 3 and metal shielding casing 1 be when forming two electrically contact point, and antenna 4 has preferable impedance matching, voltage standing wave ratio and antenna performance.
By after the above explanation as can be known, the grounding parts of the antenna 4 of the wireless device 100 of this utility model 41 forms with metal shielding casing 1 and electrically connects, to increase the antenna ground area and to promote antenna performance and antenna gain.In addition, first earth point 34 of circuit board 3 and second earth point 35 form two electrically contact points by first electric conductor 36 and second electric conductor 10 with metal shielding casing 1 respectively, to increase the contact area of circuit board 3, the electric coupling influence that makes 3 pairs of antennas 4 of circuit board be produced reduces, and promotes the antenna performance and the antenna gain of antenna 4.
Claims (6)
1. wireless device comprises:
One metal shielding casing;
One insulation shell is with this metal shielding casing combination;
One circuit board is contained in metal shielding casing and the insulation shell;
One antenna is contained in metal shielding casing and the insulation shell, and antenna has a feeding portion and a grounding parts;
It is characterized in that: this circuit board is provided with a signal feed-in point and one first earth point and one second earth point that are arranged at the contiguous place of this signal feed-in point, first earth point of this circuit board and one first electric conductor electrically connect, this first electric conductor and this metal shielding casing electrically connect, second earth point of this circuit board and one second electric conductor electrically connect, this second electric conductor and this metal shielding casing electrically connect, the feeding portion of this antenna electrically connects number load point of circuit board letter, and the grounding parts of this antenna electrically connects this metal shielding casing.
2. wireless device according to claim 1 is characterized in that: described circuit board has corresponding two sides, and signal feed-in point is arranged on the one side of circuit board, and first earth point and second earth point are arranged on the another side of circuit board.
3. wireless device according to claim 1 is characterized in that: described antenna is an inverted-F antenna.
4. wireless device according to claim 1 is characterized in that: described antenna is arranged on the insulation shell.
5. wireless device according to claim 1 is characterized in that: described first electric conductor is a conducting strip.
6. wireless device according to claim 1 is characterized in that: described second electric conductor is the elastic conductor that is arranged on the metal shielding casing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200536616U CN201063610Y (en) | 2007-06-29 | 2007-06-29 | Radio device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200536616U CN201063610Y (en) | 2007-06-29 | 2007-06-29 | Radio device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201063610Y true CN201063610Y (en) | 2008-05-21 |
Family
ID=39451996
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200536616U Expired - Fee Related CN201063610Y (en) | 2007-06-29 | 2007-06-29 | Radio device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201063610Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101640312A (en) * | 2008-07-31 | 2010-02-03 | 深圳富泰宏精密工业有限公司 | Mobile communication terminal |
| WO2013033958A1 (en) * | 2011-09-08 | 2013-03-14 | 广东欧珀移动通信有限公司 | Antenna device of handheld terminal |
| CN104025378A (en) * | 2011-10-31 | 2014-09-03 | 松下电器产业株式会社 | Wireless terminal |
| CN105305078A (en) * | 2015-11-11 | 2016-02-03 | 小米科技有限责任公司 | Mobile terminal |
| CN106454608A (en) * | 2016-12-05 | 2017-02-22 | 深圳市科奈信科技有限公司 | Low-loss wireless Bluetooth headset |
| CN106856259A (en) * | 2015-12-08 | 2017-06-16 | 宏碁股份有限公司 | Electronic installation |
-
2007
- 2007-06-29 CN CNU2007200536616U patent/CN201063610Y/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101640312A (en) * | 2008-07-31 | 2010-02-03 | 深圳富泰宏精密工业有限公司 | Mobile communication terminal |
| WO2013033958A1 (en) * | 2011-09-08 | 2013-03-14 | 广东欧珀移动通信有限公司 | Antenna device of handheld terminal |
| CN104025378A (en) * | 2011-10-31 | 2014-09-03 | 松下电器产业株式会社 | Wireless terminal |
| CN105305078A (en) * | 2015-11-11 | 2016-02-03 | 小米科技有限责任公司 | Mobile terminal |
| CN105305078B (en) * | 2015-11-11 | 2019-03-15 | 小米科技有限责任公司 | Mobile terminal |
| CN106856259A (en) * | 2015-12-08 | 2017-06-16 | 宏碁股份有限公司 | Electronic installation |
| CN106856259B (en) * | 2015-12-08 | 2019-10-25 | 宏碁股份有限公司 | Electronic device |
| CN106454608A (en) * | 2016-12-05 | 2017-02-22 | 深圳市科奈信科技有限公司 | Low-loss wireless Bluetooth headset |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080521 Termination date: 20140629 |
|
| EXPY | Termination of patent right or utility model |