CN101924803B - Hand-held electronic device - Google Patents
Hand-held electronic device Download PDFInfo
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- CN101924803B CN101924803B CN 200910149426 CN200910149426A CN101924803B CN 101924803 B CN101924803 B CN 101924803B CN 200910149426 CN200910149426 CN 200910149426 CN 200910149426 A CN200910149426 A CN 200910149426A CN 101924803 B CN101924803 B CN 101924803B
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- balanced type
- electric device
- type antenna
- portable electric
- radiant body
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Abstract
A handheld electronic device comprises a shell, a receiver, a balanced antenna and a body. The shell comprises a top end and a bottom end. The receiver is disposed in the housing and adjacent to the top end, and the balanced antenna is disposed in the housing and adjacent to the bottom end. The body is arranged in the shell and is electrically connected to the telephone receiver and the balanced antenna.
Description
Technical field
The invention relates to a kind of portable electric device, and particularly about a kind of portable electric device that reduces electromagnetic interference.
Background technology
When the user operates mobile phone; Near the signal that is given off the receiver of mobile phone (receiver) can and hearing aids (Hearing Aid) between produce and interfere with each other; So (Federal Communications Commission of FCC; FCC) compatibility of requirement test mobile phone and hearing aids; And propose relevant for hearing aid compatibility (Hearing Aid Compatibility, HAC) standard, with define hearing aids and multiple communication equipment and with property and fail safe.
Table 1
| Grade | Electric field transmitted restriction (V/m) | Emission of magnetic field restriction (A/m) |
| M1 | 149.6-266.1 | 0.45-0.8 |
| M2 | 84.1-149.6 | 0.25-0.45 |
| M3 | 47.3-84.1 | 0.15-0.25 |
| M4 | ＜33.5 | ＜0.15 |
Please with reference to above-mentioned table 1; Under the standard of hearing aid compatibility; The manufacturer of mobile phone must be limited in the electromagnetic interference (EMI) of mobile phone below one rated value (threshold), and wherein so-called electromagnetic interference comprises that electric field and magnetic field are to the interference of hearing aids and the influence of tolerance.In other words, general HAC not single just electric field to be solved also will solve the interference of magnetic field to hearing aids simultaneously to the influence of hearing aids.And FCC requires mobile phone must reach the M3 grade of table 1.That is to say that the electric field value of mobile phone must be less than 84.1V/m, and the magnetic field value of mobile phone must be less than 0.25A/m.So how making mobile phone meet the hearing aid compatibility standard promptly becomes the present important topic of being badly in need of solution.
Summary of the invention
The present invention is about a kind of portable electric device, and it comprises following advantage at least:
One, the induced current on the reduction substrate.
Two, meet hearing aid compatibility (Hearing Aid Compatibility, HAC) standard.
According to an aspect of the present invention, a kind of portable electric device is proposed.Portable electric device comprises housing, receiver, balanced type antenna and body.Housing comprises top and bottom.Receiver is arranged in the housing and is configured near the top end, and balanced type antenna is arranged in the housing and is configured near the bottom end position.Body is arranged in the housing and is coupled to receiver and balanced type antenna.
For letting the foregoing of the present invention can be more obviously understandable, hereinafter is special lifts a preferred embodiment, and conjunction with figs., elaborates as follows:
Description of drawings
Shown in Figure 1 for being calcspar according to a kind of portable electric device of the embodiment of the invention.
Shown in Figure 2 for being the front schematic view of receiver in the position of portable electric device.
Fig. 3 and the back position perspective view that is respectively balanced type antenna in the different angles of portable electric device shown in Figure 4.
Fig. 4 A and Fig. 4 B illustrate the structural representation of unbalanced antenna and balanced type antenna respectively.
Shown in Figure 5 for being receiver and the relative position sketch map of balanced type antenna in portable electric device.
Shown in Figure 6 for being the subelement perspective view of portable electric device.
Fig. 7 A and Fig. 7 B are respectively the stereogram of balanced type antenna different angles.
The main element symbol description
10: portable electric device
110: housing
112: the top
114: the bottom
120: receiver
130: balanced type antenna
131: feeding portion
133: grounding parts
132: radiant body is positive
134: the radiant body back side
136: the radiant body side
140: body
142: system ground
144: conducting strip
146: inhale wave plate
150: substrate
230: the unbalanced antenna
Embodiment
In order to meet the hearing aid compatibility standard, following embodiment provides a kind of portable electric device, and it has the function of wireless mobile communications, explain with mobile phone in the present embodiment, but not as limit.Portable electric device comprises housing, receiver, balanced type antenna and body.Housing comprises top and bottom.Receiver is arranged in the housing and is configured near the top end, and balanced type antenna is arranged in the housing and is configured near the bottom end position.The body of portable electric device is arranged in the housing and is electrically connected to receiver and balanced type antenna.After state further and will specify as follows with embodiment:
Embodiment
Please be simultaneously referring to figs. 1 through Fig. 4; Shown in Figure 1 for being calcspar according to a kind of portable electric device of the embodiment of the invention; Shown in Figure 2 is that receiver is in the position view of portable electric device; Fig. 3 and the position perspective view that is respectively the different angles of balanced type antenna in portable electric device shown in Figure 4, shown in Figure 5 for being receiver and the relative position sketch map of balanced type antenna in mobile communications device.Portable electric device 10 for example be mobile phone (Mobile Phone), intelligent mobile phone (Smart Phone), personal digital assistant (Personal Digital Assistant, PDA), satellite navigator.Portable electric device 10 comprises housing 110, receiver 120, balanced type antenna (BalancedAntenna) 130 and body 140, and balanced type antenna 130 is between housing 110 and body 140.Receiver 120, balanced type antenna 130 and body 140 are arranged in the housing 110, and body 140 is coupled to receiver 120 and balanced type antenna 130.Body 140 is via balanced type antenna 130 transmitting/receiving wireless signals, and the wireless signal that balanced type antenna 130 is received is play output via receiver 120 again after match circuit, RF circuit and a succession of interlock circuit are handled.Balanced type antenna 130 for example is the loop antenna (Loop Antenna) of three-dimensional structure, and the body 140 of portable electric device is a substrate for example, and disposes many relevant electronic circuit components on the substrate.
Please with reference to Fig. 4 A, Fig. 4 A is depicted as the structural representation of unbalanced antenna and substrate.Unbalanced antenna 230 electrically connects with substrate 150.Electric current I a=I1+I2 in the unbalanced antenna 230.Because I1 does not flow back to the system ground in the substrate 150, so current Ib is not equal to electric current I a.Based on law of conservation of energy, induced current Ir certainly will will be produced accordingly on the substrate 150, so that electric current I a=Ib+Ir.Because therefore the generation of substrate 150 induced currents Ir causes receiver 130 adjacent domains to produce the electric charge uneven distribution, and produces the change of electric field.Thus, will have influence on hearing aid compatibility (Hearing Aid Compatibility, test HAC).
Please with reference to Fig. 4 B and Fig. 5, Fig. 4 B is depicted as the structural representation into balanced type antenna and substrate.Balanced type antenna 130 electrically connects with substrate 150.Because the electric current I a=Ib in the balanced type antenna 130, so will can not produce any induced current Ir on the substrate 150.Thus, near the CHARGE DISTRIBUTION of the electric field the receiver 130 just can not change yet, so can more meet the compatibility specification of HAC.
Please, shown in Figure 6 for being the subelement perspective view of portable electric device with reference to Fig. 6.Aforementioned body 140 also comprises system ground 142, conducting strip 144 and inhales wave plate 146.System ground 142 is connected to the grounding parts 133 of balanced type antenna 130, and conducting strip 144 is connected near the side and 112 places, adjacent top of system ground 142, to increase the current density of system ground 142.Inhale wave plate 146 and increase formed changes of magnetic field because of current density in order to control.In general therefore the areas of high current density multidigit inhales the zone line that wave plate 146 preferably is arranged on system ground 142 in the middle of system ground 142.Aforementioned portable electric device 10 can further suppress electromagnetic interference through conducting strip 144 and suction wave plate 146; Make portable electric device 10 more meet (the Federal Communications Commission of FCC; Hearing aid compatibility (Hearing AidCompatibility, HAC) standard of FCC) working out.
Please be simultaneously with reference to Fig. 7 A and Fig. 7 B, Fig. 7 A and Fig. 7 B are respectively the stereogram of balanced type antenna different angles, and the mode of in Fig. 7 B, more drawing with hacures more clearly demonstrates the actual form (pattern) of antenna.Aforementioned balanced type antenna 130 comprises radiant body front 132, the radiant body back side 134 and radiant body side 136, and balanced type antenna 130 comprises feeding portion 131 and grounding parts 133 in addition, and wherein feeding portion 131 is electrically connected to body 140 respectively with grounding parts 133.More clearly; Forms feeding portion 131 and grounding parts 133 individually by radiant body positive 132 two strips (strip) part that 134 extensions bend out towards the radiant body back side, and this feeding portion 131 and grounding parts 133 respectively by a shell fragment (springfinger) to do electric connection with body 140.Radiant body positive 132 is parallel and relative with the radiant body back side 134.Radiant body side 136 is electrically connected at the radiant body positive 132 and the radiant body back side 134, and perpendicular to the radiant body positive 132 and the radiant body back side 134.Because conventional balanced formula antenna oversize, and mobile communications device stresses compact design again, therefore can't balanced type antenna be widely applied to mobile communications device in the past.Balanced type antenna 130 shown in Fig. 7 A and Fig. 7 B is by the mode of folding (folded); (also being interpreted as portable electric device operates under certain CF to dwindle the required current path of balanced type antenna; The radiation resonant path that wireless signal is required); It can be set in the portable electric device 10, and balanced type antenna 130 is benchmark with transversal A-A, forms the structure of left and right sides symmetrical expression (symmetry).More importantly; Balanced type antenna 130 is a loop antenna (loop antenna); Because the electric current that flows into balanced type antenna 130 equals to flow out the electric current of balanced type antenna 130; Therefore can further avoid on substrate, producing induced current, so can improve the electromagnetic interference of portable electric device 10 significantly.
The disclosed mobile communications device of the above embodiment of the present invention has multiple advantages, below just lists and lifts the explanation of part advantage as follows:
One, the induced current on the reduction substrate.
Two, meet hearing aid compatibility (Hearing Aid Compatibility, HAC) standard.
In sum, though the present invention with a preferred embodiment openly as above, so it is not in order to limit the present invention.Have common knowledge the knowledgeable in the technical field under the present invention, do not breaking away from the spirit and scope of the present invention, when doing various changes and retouching.Therefore, protection scope of the present invention is as the criterion when looking claims person of defining.
Claims (9)
1. portable electric device comprises:
One housing has a top and a bottom;
One receiver is arranged in this housing and adjacent this top; And
One balanced type antenna is arranged in this housing and adjacent this bottom; And
One body is arranged in this housing and is electrically connected to this receiver and this balanced type antenna,
Wherein this body also comprises:
One ground plane is electrically connected to this balanced type antenna;
One conducting strip electrically connects this ground plane and adjacent this top.
2. portable electric device according to claim 1, the electric current that wherein flows into this balanced type antenna equals to flow out the electric current of this balanced type antenna.
3. portable electric device according to claim 1, wherein this balanced type antenna is between this housing and this body.
4. portable electric device according to claim 1, wherein this balanced type antenna is a loop antenna.
5. portable electric device according to claim 4, wherein this loop antenna is a three-dimensional structure.
6. portable electric device according to claim 5, wherein this loop antenna comprises:
One first radiant body;
One second radiant body, parallel and relative with this first radiant body; And
One the 3rd radiant body connects this first radiant body and this second radiant body, and respectively perpendicular to this first radiant body and this second radiant body;
Wherein this loop antenna forms the structure of a symmetrical expression.
7. portable electric device according to claim 6 wherein extends the two strips part that bends out by this first radiant body towards this second radiant body and forms a feeding portion and a grounding parts individually, and this feeding portion and this grounding parts are electrically connected to body respectively.
8. portable electric device according to claim 1 also comprises:
One inhales wave plate, increases formed changes of magnetic field in order to the current density of controlling because of this balanced type antenna of flowing through.
9. portable electric device according to claim 8, wherein this suction wave plate is arranged on the zone line of this ground plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910149426 CN101924803B (en) | 2009-06-16 | 2009-06-16 | Hand-held electronic device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910149426 CN101924803B (en) | 2009-06-16 | 2009-06-16 | Hand-held electronic device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101924803A CN101924803A (en) | 2010-12-22 |
| CN101924803B true CN101924803B (en) | 2012-12-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200910149426 Active CN101924803B (en) | 2009-06-16 | 2009-06-16 | Hand-held electronic device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101924803B (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1284762A (en) * | 1999-08-06 | 2001-02-21 | 索尼公司 | Aerial device and portable wireless mobile telephone |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4510244B2 (en) * | 2000-07-19 | 2010-07-21 | パナソニック株式会社 | Antenna device |
| KR101409871B1 (en) * | 2007-10-25 | 2014-06-20 | 엘지전자 주식회사 | Portable terminal |
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2009
- 2009-06-16 CN CN 200910149426 patent/CN101924803B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1284762A (en) * | 1999-08-06 | 2001-02-21 | 索尼公司 | Aerial device and portable wireless mobile telephone |
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| Publication number | Publication date |
|---|---|
| CN101924803A (en) | 2010-12-22 |
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