CN102800931A - Mobile communication terminal antenna device - Google Patents
Mobile communication terminal antenna device Download PDFInfo
- Publication number
- CN102800931A CN102800931A CN2012103013023A CN201210301302A CN102800931A CN 102800931 A CN102800931 A CN 102800931A CN 2012103013023 A CN2012103013023 A CN 2012103013023A CN 201210301302 A CN201210301302 A CN 201210301302A CN 102800931 A CN102800931 A CN 102800931A
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- Prior art keywords
- communication terminal
- mobile communication
- antenna
- metal
- radiant body
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
- H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
- H01Q1/241—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM
- H01Q1/242—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use
- H01Q1/243—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use with built-in antennas
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/30—Arrangements for providing operation on different wavebands
- H01Q5/378—Combination of fed elements with parasitic elements
- H01Q5/385—Two or more parasitic elements
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
- H01Q9/04—Resonant antennas
- H01Q9/30—Resonant antennas with feed to end of elongated active element, e.g. unipole
- H01Q9/42—Resonant antennas with feed to end of elongated active element, e.g. unipole with folded element, the folded parts being spaced apart a small fraction of the operating wavelength
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Telephone Set Structure (AREA)
- Support Of Aerials (AREA)
- Details Of Aerials (AREA)
Abstract
The invention discloses a mobile terminal antenna device which comprises a metal frame arranged on a mobile communication terminal shell, a first radiating body and a second radiating body arranged on an antenna carrier and a main circuit board arranged in a mobile communication terminal, wherein a main earth point on the main circuit board is connected with the metal frame; the first radiating body is provided with a coupling gap and is connected with a radio-frequency feed source on the main circuit board via a conducting connector, and an earth point on the first radiating body is connected with the metal frame via a conducting connector; and the second radiating body as a double-grounded parasitic antenna branch of the antenna device is used for expanding low-frequency bandwidth. The mobile terminal antenna device is a coupled feed-in type monopole antenna device. Compared with the prior art, the mobile terminal antenna device has the advantages of ultralow low-frequency bandwidth, good antenna performance, high efficiency and the like, the problem that a large metal part of the mobile communication terminal and the antenna coexist is also well solved, and the metal texture of the appearance of the mobile communication terminal is better ensured on the shape.
Description
Technical field
The present invention relates to a kind of mobile communication terminal antenna device, be specifically related to a kind of monopole antenna device that is applied to the coupling feed-in type of mobile phone.
Background technology
Along with the development of wireless communication technique, also increasingly high to the requirement of wireless telecommunications system, the antenna that receives and send as electromagnetic wave has also had multiple structure to adapt to the requirement of communication apparatus, and therefore the performance of antenna or structure have also had bigger challenge.Wireless communication technique flourish; Make that the information submodule that carries on the mobile terminal system is also more and more; Generally carry multiple sub-communication module like the system of current smart mobile phone, the increase of this a little communication module will inevitably cause the expansion of antenna frequency band and the increase of antenna structure complexity.Simultaneously, hand-held terminal devices such as smart mobile phone develop towards the direction of slimming and strong metal textureization, and the hand-held terminal device of slimming and strong metal texture has brought great challenge for undoubtedly the design of antenna.
Current mobile communication terminal built-in antenna generally adopts planar inverted-F antenna (PIFA) and unipole antenna (Monopole Antenna).Planar inverted-F antenna has been owing to the having relatively high expectations of area and height, seriously limited the layout of complete machine and lightening, simultaneously because many antenna arrangements are limit, and planar inverted-F antenna limits by its radiation mechanism, causes its poor-performing, thereby not by a large amount of employings.And with regard to unipole antenna, the existence of the big metalwork of close region has fatal influence to its antenna performance.Therefore, existing mobile communication terminal built-in antenna haves much room for improvement.
Summary of the invention
Be the problem that overcomes the not enough of prior art and exist; The present invention provides a kind of mobile communication terminal antenna device; This antenna assembly is the unipole antenna form of coupling feed-in type; Have wide very wide, the advantage such as antenna performance is good of low-frequency band, also solved the problem of antenna simultaneously well with big metalwork coexistence.
The present invention realizes through following technical scheme: a kind of mobile communication terminal antenna device; Comprise metal edge frame, the antenna carrier be located on the mobile communication terminal housing, be located at the circuit main board in the mobile communication terminal, said circuit main board is provided with the radio frequency feedder of this antenna assembly; Antenna carrier is provided with first radiant body and second radiant body of this antenna assembly; Wherein, described first radiant body is provided with distributing point and earth point, and described distributing point is connected with radio frequency feedder through Elecrical connector; Described earth point is connected with metal edge frame through Elecrical connector, is used to form a unipole antenna; The two ends of described second radiant body respectively are provided with an earth point; One earth point is connected with ground on the circuit main board through Elecrical connector; Another earth point is connected with metal edge frame through Elecrical connector, is used to form the two ground connection passive antenna branch of said antenna assembly; Being connected on described metal edge frame and the circuit main board, metal edge frame is provided with one or more slit mainly, is provided with a slit at least in the side edge near the metal edge frame of second radiant body.
Further, described first radiant body is provided with the feed-in mode that is used to make radio frequency feedder is become the coupling feed-in by direct feed-in coupling slit; This coupling slit is arranged between the earth point and distributing point on first radiant body, and the end of slit near earth point that should be coupled.
Further, the described second radiant body integral body is rectangle, and is arranged on the antenna carrier near a side of distributing point on first radiant body.
Preferably, described metal edge frame is arranged at the front at display screen of mobile communication terminal place, and this metal edge frame comprises is located at the positive last Metal decorative part of mobile communication terminal, following Metal decorative part and left metal moulding, right metal moulding; Left side metal moulding, right metal moulding all with circuit main board on be connected mainly; Described upward Metal decorative part, right metal moulding, following Metal decorative part connect successively, and described slit is arranged between the left metal moulding and following Metal decorative part near second radiant body.
The present invention compared with prior art; Have the low frequency bandwidth ultra wide, antenna performance good, the efficient advantages of higher; Also solve simultaneously the big metalwork of mobile communication terminal and the problem of antenna coexistence well, in moulding, guaranteed the metal-like of mobile communication terminal outward appearance better.
Description of drawings
Fig. 1 is the structural representation of metal edge frame on handset shell in the embodiment of the invention;
Fig. 2 is the structural representation that antenna assembly is arranged at the mobile phone back side in the embodiment of the invention;
Fig. 3 is the perspective view of the antenna assembly of the embodiment of the invention when removing handset shell.
Among the figure: Metal decorative part, the right metal moulding of 103-, 104-left side metal moulding, 105-slit under 1-metal edge frame, 10-phonate hole, the last Metal decorative part of 101-, the 102-; 201-first radiant body, 202-second radiant body, the 201-1-slit that is coupled; 301,302,303,304-Elecrical connector; 4-circuit main board, 401-radio frequency feedder, 5-antenna carrier, 6-display screen.
Embodiment
For the ease of those skilled in the art's understanding,, be that specific embodiment further describes the present invention with the antenna assembly that is applied to mobile phone below in conjunction with accompanying drawing.
Like accompanying drawing 1, Fig. 2 and shown in Figure 3, a kind of antenna for mobile telephone set comprises metal edge frame 1, the antenna carrier 5 be located on the handset shell; Be located at the circuit main board 4 in the mobile phone; Said circuit main board 4 is provided with the radio frequency feedder 401 of this antenna assembly, and antenna carrier 5 is provided with first radiant body 201 and second radiant body 202 of this antenna assembly, wherein; Described first radiant body 201 is provided with distributing point and earth point; Described distributing point is connected with radio frequency feedder 401 through Elecrical connector, and described earth point is connected with metal edge frame 1 through Elecrical connector, is used to form a unipole antenna; The two ends of described second radiant body 202 respectively are provided with an earth point; One earth point is connected with ground on the circuit main board 4 through Elecrical connector; Another earth point is connected with metal edge frame 1 through Elecrical connector, is used to form the two ground connection passive antenna branch of said antenna assembly; Being connected on described metal edge frame 1 and the circuit main board 4 mainly; At least be provided with a slit 105 on the metal edge frame 1; The position that this slit 105 is provided with is relevant with second radiant body 202, and slit 105 is arranged on the side frame near the metal edge frame 1 of second radiant body 202.Certainly, also can on other positions of metal edge frame 1, other slits be set as required, detail no longer for example here.
Described first radiant body 201 is provided with the feed-in mode that is used to make radio frequency feedder 401 is become the coupling feed-in by direct feed-in coupling slit 201-1; This coupling slit 201-1 is arranged between the earth point and distributing point on first radiant body 201, and the end of slit 201-1 near earth point that should be coupled.Described second radiant body, 202 integral body are rectangle, and are arranged on the antenna carrier 5 near a side of distributing point on first radiant body 201.
Shown in accompanying drawing 1, described metal edge frame 1 is arranged at the mobile phone front at mobile phone display screen 6 places, and this metal edge frame 1 comprises the positive last Metal decorative part 101 of mobile phone, following Metal decorative part 102 and left metal moulding 103, right metal moulding 104; Said upward Metal decorative part 101, right metal moulding 104, following Metal decorative part 102 connect successively; Metal edge frame 1 is provided with slit 105; The position that this slit 105 is provided with is relevant with the position of second radiant body 202 on being arranged at antenna carrier 5, and it is arranged between the left metal moulding 103 and following Metal decorative part 102 near second radiant body 202.Left side metal moulding 103, right metal moulding 104 all with circuit main board 4 on be connected mainly, the quantity of ground connection and position can be adjusted according to concrete needs.In addition, be provided with the phonate hole 10 of a mobile phone loud speaker in the middle of the last Metal decorative part 101.Metal edge frame 1 can be installed on the plastic casing of mobile phone through structure buckle, mode such as inlay, and becomes the appearance of mobile phone, in moulding, guarantees the metal-like of cell phone appearance better.
Shown in accompanying drawing 2, the handset shell back side is provided with the antenna carrier 5 of plastic material, and antenna carrier 5 is arranged at the lower end of handset shell, and the following Metal decorative part 102 of its upright projection and metal edge frame 1 is in the same end of handset shell.First radiant body 201, second radiant body 202 are arranged on the antenna carrier 5.From the angle at the handset shell back side, first radiant body 201 is positioned at the left side of antenna carrier 5, and second radiant body 202 is positioned at the right side of antenna carrier 5.Wherein, first radiant body 201 be provided with the coupling slit 201-1, this coupling slit 201-1 be arranged at Elecrical connector 303 near.First radiant body 201, second radiant body 202 can pass through process Installation such as FPC, sheet material or LDS on antenna carrier 5.
Shown in accompanying drawing 3; Circuit main board 4 is located between first radiant body 201 and the following Metal decorative part 102; First radiant body 201, circuit main board 4 and down Metal decorative part 102 threes form " sandwich " structure, first radiant body 201, second radiant body 202 are in the same plane.The earth point of first radiant body 201 is positioned on the end near first radiant body 201 at handset shell edge, and this earth point is connected with the following Metal decorative part 102 of metal edge frame 1 through Elecrical connector 303; The distributing point of first radiant body 201 is positioned on first radiant body 201 near second radiant body 202, and this distributing point is connected with radio frequency feedder 401 on the circuit main board 4 through Elecrical connector 301.Coupling slit 201-1 on first radiant body 201 is arranged between earth point and the distributing point and on the position near earth point.Second radiant body 202 is positioned at a side of the distributing point of first radiant body 201, and its integral body is rectangle.Second radiant body, 202 two ends respectively are provided with an earth point; Earth point near the distributing point of first radiant body 201 is connected with the ground of circuit main board 4 through Elecrical connector 302; Another earth point is connected with the following Metal decorative part 102 of metal edge frame 1 through Elecrical connector 304; Wherein, the shape of Elecrical connector 301,302,303,304 and position all can be adjusted according to actual needs.
The main resonance mechanism of this antenna for mobile telephone set is: (1) is by Elecrical connector 301, first radiant body 201, Elecrical connector 303, Metal decorative part 102 connects successively down; Radio frequency feedder 401 on the mainboard 4 forms the coupling feed antenna of a Monopole (one pole) through Elecrical connector 301 feed-ins.The resonance principle of antenna can be known thus: this antenna quarter-wave resonance is in the 900MHz of mobile phone frequency range; / 2nd wave resonance of this antenna are in the DCS of mobile phone (Digital Cellular System simultaneously; 1710 MHz-1880MHz) frequency range, PCS (personal communication service) band segment; The coupling slit 201-1 that is provided with on first radiant body 201; Make radio frequency feedder 401 become the coupling feed-in from the mode of direct feed-in; Thereby changed the CURRENT DISTRIBUTION on the antenna loop; When the user held the slit 105 on the tight metal edge frame 1, therefore the performance of antenna can not receive influence, had solved the problem of antenna for mobile phone with big metalwork coexistence simultaneously well yet.(2) by Elecrical connector 302, second radiant body 202, Elecrical connector 304 and down Metal decorative part 102 connect successively; Form the two ground connection passive antenna branch of this antenna assembly; Main 850MHz frequency range, the resonance of PCS, UMTS (UMTS) part high-frequency band of producing.This antenna for mobile phone adopts the Monopole antenna form, has low frequency bandwidth ultra wide (its low frequency bandwidth can reach 700MHz-1000MHz), good, the efficient advantages of higher of antenna performance, has guaranteed the excellent performance for wireless communications of mobile phone.
The foregoing description is the preferable implementation of the present invention, is not to be to qualification of the present invention, and under the prerequisite that does not break away from the present invention's design, any conspicuous replacement is all within protection scope of the present invention.
Claims (7)
1. mobile communication terminal antenna device; Comprise metal edge frame (1), the antenna carrier (5) be located on the mobile communication terminal housing; Be located at the circuit main board (4) in the mobile communication terminal; Said circuit main board is provided with the radio frequency feedder (401) of this antenna assembly, and antenna carrier is provided with first radiant body (201) and second radiant body (202) of this antenna assembly, it is characterized in that:
Described first radiant body (201) is provided with distributing point and earth point, and distributing point is connected with radio frequency feedder (401) through Elecrical connector (301), and earth point is connected with metal edge frame through Elecrical connector (303), is used to form a unipole antenna;
The two ends of described second radiant body (202) respectively are provided with an earth point; One earth point is connected with ground on the circuit main board (4) through Elecrical connector (302); Another earth point is connected with metal edge frame through Elecrical connector (304), is used to form the two ground connection passive antenna branch of said antenna assembly;
Being connected on described metal edge frame (1) and the circuit main board, metal edge frame is provided with one or more slit mainly, is provided with a slit (105) at least in the side edge near the metal edge frame of second radiant body.
2. mobile communication terminal antenna device according to claim 1 is characterized in that: described first radiant body (201) is provided with the feed-in mode that is used to make radio frequency feedder (401) is become the coupling feed-in by direct feed-in coupling slit (201-1).
3. mobile communication terminal antenna device according to claim 2 is characterized in that: described coupling slit (201-1) is arranged between the earth point and distributing point on first radiant body (201), and the end of slit near earth point that should be coupled.
4. mobile communication terminal antenna device according to claim 3 is characterized in that: described second radiant body (202) integral body is rectangle, and is arranged on the antenna carrier (5) near a side of distributing point on first radiant body.
5. according to each described mobile communication terminal antenna device of claim 1-4; It is characterized in that: described metal edge frame (1) is arranged at the front at display screen of mobile communication terminal (6) place, and this metal edge frame comprises is located at the positive last Metal decorative part (101) of mobile communication terminal, following Metal decorative part (102) and left metal moulding (103), right metal moulding (104).
6. according to the described mobile communication terminal antenna device of claim 5; It is characterized in that: described upward Metal decorative part (101), right metal moulding (104), following Metal decorative part (102) connect successively, and described slit (105) are arranged near between the left metal moulding (103) of second radiant body (202) and the following Metal decorative part (102).
7. according to the described mobile communication terminal antenna device of claim 6, it is characterized in that: described left metal moulding (103), right metal moulding (104) all with circuit main board (4) on be connected mainly.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103013023A CN102800931A (en) | 2012-08-23 | 2012-08-23 | Mobile communication terminal antenna device |
| PCT/CN2012/082485 WO2014029156A1 (en) | 2012-08-23 | 2012-09-29 | Antenna device for mobile communication terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103013023A CN102800931A (en) | 2012-08-23 | 2012-08-23 | Mobile communication terminal antenna device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102800931A true CN102800931A (en) | 2012-11-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012103013023A Pending CN102800931A (en) | 2012-08-23 | 2012-08-23 | Mobile communication terminal antenna device |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN102800931A (en) |
| WO (1) | WO2014029156A1 (en) |
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