CN101645531A

CN101645531A - FM antenna device and portable electronic device comprising same

Info

Publication number: CN101645531A
Application number: CN200810144923A
Authority: CN
Inventors: 王传锋; 孙岱辉
Original assignee: Laird Technologies Beijing Co Ltd
Current assignee: Laird Technologies Beijing Co Ltd
Priority date: 2008-08-07
Filing date: 2008-08-07
Publication date: 2010-02-10

Abstract

The invention provides an FM antenna device and a portable electronic device comprising the same. The antenna device (24) used for the portable electronic device comprises a slender and conductive radiation and/or radiation receiving element (24) used for connecting a first antenna contact area, wherein the conductive element comprises main sections (25, 26, 27, 28 and 30); the main sections are used for fastening in the portable electronic device and jointing a first elastic incline section (32) which is separated from the main sections at an end position; and the incline section (32) is provided with a contact end (33) used for contacting the first antenna contact area in the portable electronic device.

Description

FM antenna assembly and comprise the portable electron device of this FM antenna assembly

Technical field

The present invention relates generally to antenna, and relates more specifically to a kind of antenna assembly that is used for portable electron device.The invention still further relates to a kind of portable electron device that comprises this antenna assembly.

Background technology

The FM antenna that is used for portable electron device is normally external, promptly is arranged on the outside of related device.A kind of such antenna for example is the flexible cord (cord) of the portable handsfree device that is provided with relatively with cell phone.

But, use inner FM antenna, promptly be built in the antenna in the device itself, benefit.

Some prior aries relate to this aspect.

For example, GB 2439601 has described the FM antenna that is integrated in the electronic installation housing of (such as, mobile phone).

EP 1689021 discloses the FM loop aerial that is positioned at housing and has advised that also antenna can be set to screw thread (thread).

WO 05/006579 discloses the FM loop aerial that is positioned at housing.

US 2007/0054693 shows by the FM antenna in the parcel line housing that form, that be installed in mobile phone.

US 2006/0111163 shows housing and the FM transmitting antenna between the covering plate (flattop antenna or printed antenna) that is installed in portable communication appts.

But, when this built-in FM antenna is set, go wrong aspect the circuit board carrying out fastening to it and be connected to.There is improved space in this respect.

Summary of the invention

The portable electron device that the object of the present invention is to provide a kind of antenna assembly and comprise this antenna assembly, wherein the antenna of antenna assembly can be installed on the circuit board with simple and flexible way.

According to a first aspect of the invention, by realizing above-mentioned purpose as the antenna assembly that limits in the claim 1.

According to a second aspect of the invention, by realizing above-mentioned purpose as the portable electron device that limits in the claim 10.

Define favourable modification of the present invention in the dependent claims.

The invention provides a kind of antenna assembly and a kind of portable electron device, wherein the antenna assembly of radiation by comprising conduction and/or radiation receiving element has solved the simpler and problem that install more neatly of proof, the radiation of this conduction and/or radiation receiving element have the principal piece that is used to be fastened on portable electron device inside, this principal piece engages with the elasticity tilting section that tilts to leave from described principal piece at one end, and wherein this tilting section has the contact jaw that is used for contacting in the inside of described portable electron device the first antenna contact area.

For the ease of the installation of described antenna assembly, described portable electron device comprises holding unit that keeps described antenna and the circuit board with at least one antenna contact area.The contact jaw of the tilting section of described antenna is squeezed into described antenna contact area by described holding unit and electrically contacts.

Description of drawings

Below by example also with reference to the accompanying drawings to describe the present invention, wherein:

Fig. 1 shows the front view according to portable electron device of the present invention;

Fig. 2 shows the cutaway view according to portable electron device of the present invention;

Fig. 3 shows the stereogram that antenna according to the present invention is seen from the top;

Fig. 4 shows the stereogram that the antenna in the antenna bearing part is seen from the top that is installed among Fig. 3;

Fig. 5 has illustrated the amplifier section that antenna and antenna bearing part are seen from the top with different stereograms;

Fig. 6 shows the stereogram that the antenna that is installed in the antenna bearing part is seen from the below;

Fig. 7 shows the stereogram of the top observation of the antenna bearing part that protected location is installed;

Fig. 8 show the antenna bearing part with and on the stereogram of the antenna of circuit board from beneath has been installed; And

Fig. 9 shows the view of seeing from the below of the antenna, antenna bearing part and the circuit board that are installed together.

Embodiment

To provide detailed description hereinafter to the preferred implementation of antenna according to the present invention and portable electron device.In described explanation, the purpose unrestricted for explanation set forth detail, to understand the present invention fully.But, it will be understood by those skilled in the art that the present invention can be applied in from other execution modes of these details.In other examples, become obscure in order not make explanation of the present invention because of unnecessary details, omitted the detailed description of known unit, mechanism and circuit.

Fig. 1 shows the front view such as the portable electron device 10 of mobile phone.Yet this portable electron device can be the device of other types, such as laptop computer, palmtop computer, electronic notebook, game machine or media player.As embodiment, device 10 is provided with and is positioned near the display in its upper end 12 and is positioned near the keyboard 14 in its lower end.These all are arranged on the housing of device 10.But, should understand that this device also can not be provided with display and/or keyboard.Device 10 also is provided with at least one antenna.But all antennas all are arranged in the device, promptly are arranged on the inside of device.

Fig. 2 shows the diagrammatic side view of device 10, and it is the cross section through housing 16.Understand element essential to the invention in order to make explanation of the present invention clear understandable, only to be included as.Therefore, omitted the many unit in the device here, example is display and keyboard as shown in Figure 1.Here, device 10 comprises the circuit board 20 that holding unit 18 is installed on it.This holding unit here is an antenna bearing part 18.Also have radio circuit 22 on circuit board 20, it can for example be used for the radio signal that demodulation is received by the antenna that is installed in the antenna bearing part.Here, radio signal is can be by the FM radio signal of reception of the antenna in the antenna bearing part or emission.Therefore, antenna is set in frequency band and operates, and this frequency band here is the FM frequency band.Here, antenna bearing part 18 can be arranged on the upper end of portable electron device or lower end and can with other possible antennas (being similar to the cellular network antenna) at a distance of distance far away as far as possible.

Fig. 3 shows the stereogram that antenna 24 according to the present invention is seen from the top, and this antenna is kept by the antenna bearing part.That antenna 24 comprises is thin, elastic conduction, elongate radiation and/or radiation receiving element 24.This element 24 preferably is set to the single metal line, and it can for example be made by stainless steel, phosphor-copper, copper or aluminium.This material also can for example can be handled for the thick nickel coating of 2-3 μ m by covering on whole element.This element 24 has principal piece.Here, this principal piece comprises first straight line portion 25, and this first straight line portion is so that form the mode of approximate an angle of 90 degrees and engage with second straight line portion 27 via first sweep 26 between first straight line portion 25 and second straight line portion 27.Therefore, first sweep 26 can be configured as circular or an oval-shaped part, for example is 1/4th of circle.Here, second straight line portion 27 is also so that form the mode of approximate an angle of 90 degrees and engage with the 3rd straight line portion 30 via second sweep 28 between second straight line portion 27 and the 3rd straight line portion 30.Therefore, second sweep 28 also can be configured as circular or an oval-shaped part, for example is 1/4th of circle.This principal piece is arranged between first tilting section 32 and second tilting section 34.Here, the first 25 of principal piece engages with first tilting section 32, and the third part 30 of principal piece engages with second tilting section 34.Here, tilting

section

32 and 34 is provided with corresponding contact jaw 33 and 35.Here, these contact jaws are for hook-shaped and can provide improved contact performance at the contact jaw place by suitable surface treatment.This surface treatment can by for example utilize one or more noble metals (such as, gold and/or platinum) carry out coating and realize that this coating can for example have the thickness of about 0.6 μ m.As a kind of optional mode, entire antenna 24 all can be carried out this processing.

Here, all

parts

25,26,27,28 and 30 of principal piece all are arranged in the antenna plane.Here, tilting section 32 all points to the contact plane parallel with this antenna plane from antenna plane with 34 at a distance.Each tilting section also can himself with principal piece and respective end that this tilting section engages between have identical angle.Here, first tilting section 32 therefore can be arranged to respect to first straight line portion 25 at an angle and second tilting section 34 can be arranged to be equal angular with respect to the 3rd straight line portion 30.But described angle also can be different.In addition, each tilting section can only have perpendicular to the extension of antenna plane and at the length direction of the end that engages of principal piece (here, length direction at corresponding straight line portion) extension on, therefore in antenna plane, on direction, there is not extension perpendicular to the length direction of the respective end of principal piece.Hook portion also can be pointed to equidirectional with respect to the respective end of principal piece, for example deviate from this end, perhaps point in opposite direction with respect to the respective end of principal piece, as shown in Figure 3, wherein the hook portion of first contact jaw 33 curves away from the first 25 of principal piece, and the hook portion of second contact jaw 35 faces the third part 30 of principal piece.Two contact jaws all are arranged in parallel with antenna plane and the isolated contact area plane usually.Like this, beveled end can be used for contact jaw 33 and 35 with

tilting section

32 and 34 and is connected to antenna connector on the foregoing circuit plate.Tilting section can also be flexible.

Can be placed on the inside of portable electron device by utilizing holding unit (being the antenna bearing part here) according to antenna of the present invention.In Fig. 4 with stereogram signal show from above see be installed in antenna this antenna bearing part.Fig. 5 shows another stereogram that the part of antenna bearing part and antenna is seen from the top, and this part is exaggerated than Fig. 4.In Fig. 6 with stereogram further schematically show from below the bearing part that has antenna seen.

In this embodiment, antenna bearing part 18 has leading flank 36, and it is provided with the slit 38 that size is suitable for the principal piece of reception antenna 24.The size in slit can make it be arranged to closely center on the principal piece of antenna.Like this, the slit with the fixed-site of antenna in bearing part.Therefore this slit 38 forms described antenna plane when antenna is installed in this bearing part.Here, slit 38 has: first end is provided with first guidance unit that is first hole, 40 forms in this first end; And second end, in this second end, being provided with second guidance unit that is second hole, 42 forms, stretch along the direction towards second opposite sides 46 of bearing part 18 this two Kong Juncong, first side 36.Here, these two

holes

40 and 42 are through hole.This means that they arrive second opposite sides 46 from first side 36 through bearing part 18 then through antenna bearing part 18.Here, through

hole

40 and 42 openings in second side end to form the plane on contact area plane.

Therefore, first through hole 40 will receive first tilting section, and second through hole 42 will receive second tilting section.Therefore, when the principal piece of antenna was placed and remains in the slit 38, first tilting section was placed in first through hole 40 and second tilting section is placed in second through hole 42.Thus, antenna 24 is kept by antenna bearing part 18.Here, tilting section and through hole can tilt less than 90 degree and 45 degree that can for example tilt with respect to antenna plane.Here, the

contact jaw

33 and 35 of tilting section also stretches and exceeds the opening of through

hole

40 and 42 in second side of antenna bearing part.Therefore, they stretch out by opening.

As shown in Figure 7, the figure shows another stereogram that antenna bearing part 18 is seen from the top, on first side 36 of antenna bearing part 18, protected location 44 can be set.This protected location 44 can be welded on the antenna bearing part, covers entire antenna, promptly covers slit and opening on first side 36 as lid, helps thus antenna is remained in the bearing part.Here, first side 36 can be provided with the groove of the same size of size and protected location 44.Like this, first side 36 of antenna bearing part 18 can provide flat surfaces with protected location 44.

Can be under the situation of not using protected location fastening antenna.For example, can fix antenna element by ultrasonic bonding or heat energy weldering in the Chosen Point place in the slit.In this case, also can save protected location.

Antenna bearing part and protected location can be made of plastics.If desired, in bearing part, also can comprise extra unit, such as extra antenna, protective cover, liner, loud speaker, camera, connector, vibrator, fastener, contact device or conveyer.

Antenna bearing part 18 can be installed on the circuit board 20, and Fig. 8 shows circuit board 20 from the below with stereogram with illustrating property, and Fig. 9 schematically shows circuit board 20 with direct view from the below.In Fig. 9, circuit board is also illustrated translucently, so that two relations between the element to be described.In the drawings, entire circuit plate 20 is not shown, and only shows the placement of circuit board and the part of antenna bearing part 18 is installed.Clipped remainder here.Antenna bearing part 18 preferably is arranged on an end place of circuit board 20, and this circuit board can be arranged on the upper end or the lower end of portable electron device.Antenna bearing part 18 can utilize suitable secure component (such as screw or hasp) to be installed on the circuit board.

Circuit board 20 correspondingly is provided with the first antenna contact area 48 and the optional second antenna contact area 50.Each

contact area

48 and 50 can be set to contact pad and be arranged on the side of second side arrangement of adjacent antennas bearing part 18 of circuit board 20.Here, each

contact area

48 and 50 all also with corresponding through-hole alignment, thereby the contact jaw 33 of each tilting section can be connected with 50 with corresponding contact area 48 with 35.In the

contact area

48 and 50 one or two can be connected to radio circuit among Fig. 2 by being arranged on conductor on the circuit board 20 then.One of them of contact area also can provide earth potential.Therefore, these through holes are the guidance unit or the guide structure of the contact jaw of the respective antenna contact area guiding tilting section on circuit board.

Here, the size of contact area can be set to always contact with corresponding tilting section when the antenna bearing part is pressed against on the circuit board.When the antenna bearing part that has antenna was mounted to circuit board, the tilting section of antenna was bent away from owing to they have elasticity.Therefore, contact area may cover respective through hole from the initial contact point when not having pressure or insufficient pressure until the contact point when installation is exerted pressure at least.This means, this contact area with the through hole on second side of cover antenna bearing part, from this through hole do not have pressure or pressure to have to prescribe a time limit corresponding tilting section from the point that wherein stretches out until this through hole when in installation process, under pressure, placing tilting section tilting section will move to the zone of position.Acting on pressure on the antenna will make tilting section increase with respect to the angle of principal piece and therefore make contact jaw further remove from the respective end of principal piece.Therefore, contact area must be enough big, to guarantee providing contact on the direction of motion in contact plane always.For example, this zone can be 2 * 3mm.

The size of antenna can be set to be complementary with radio circuit.For example, length can be chosen as about 80mm length.Here, also can select the surface treatment of antenna to strengthen the coupling and/or the performance of antenna.This can be undertaken by utilizing a surface treatment, and this surface treatment can give the impedance that antenna strengthens coupling and/or performance desirable characteristics.

Antenna can for itself or be looked at as antenna assembly when combining with holding unit.This combination of antenna and holding unit can be used as an integral body and sells.

Have many advantages according to antenna assembly of the present invention and portable electron device. The present invention Antenna assembly simply and flexibly installing with respect to circuit board is provided. Tilting section and circuit board connect Touch and because they are flexible, so they can be compressed in circuit by holding unit On the antenna contact area of plate. Weld with regard to not needing like this. By utilizing hook-shaped contact jaw, So that contact area can carry out Elastic Contact and so that Elastic Contact simplify, and can scratch these Contact area.

Can carry out many changes to antenna assembly of the present invention and portable electron device. Antenna with And only the principal piece of antenna can have different shapes. Antenna can be straight. Antenna also Other shapes that can have the meander-shaped of being similar to. Can only use one between antenna and the circuit board Individual contact point. In this case, certainly can only have a through hole. The antenna bearing part also can The slit is not set. Equally, can omit protected location. Above-mentioned antenna bearing part is arranged on circuit One end place of plate. Yet, will be appreciated that this antenna bearing part also can be arranged on arbitrary section of circuit board The office. In fact the antenna bearing part can at random be installed with respect to circuit board. Therefore, antenna holds Holder can be arranged on the circuit board, under the circuit board, or is arranged to side by side structure with circuit board. And holding unit is not limited to have the bearing part of through hole. Holding unit also can be in the phone Central dividing plate or or even housing. When providing holding unit by housing, the principal piece of antenna by Inwardly keeping towards the inner side of device of housing. Therefore, this housing can be combined with replaceable Guidance unit (for example, pipe), be used for the contact area guiding corresponding contact on circuit board The contact jaw of section. At last, what should mention is, except the FM frequency band, described antenna also available other In the frequency band, for example AM frequency band (MW and/or LW) or SW frequency band.

Therefore, the present invention only is subjected to the restriction of appended claim.

Claims

1, a kind of antenna assembly (18,24) that is used for portable electron device (10), this antenna assembly can be operated in frequency band, and comprises:

Elongated and conduct electricity radiation and/or radiation receiving element (24), it is used for being connected with the first antenna contact area (48);

Wherein said conducting element comprises principal piece (25,26,27,28,30), and this principal piece is used to be fastened on the inside of described portable electron device (10) and engages with the first elasticity tilting section (32) that tilts to leave from described principal piece at one end,

Wherein said first tilting section (32) has the contact jaw (33) that is used for contacting in the inside of described portable electron device the described first antenna contact area (48).

2, antenna assembly (18 according to claim 1,24), wherein said principal piece engages with the second elasticity tilting section (34) at an opposite end place, and this second elasticity tilting section tilts to leave and has a contact jaw (35) that is used for contacting in the inside of described portable electron device (10) the second antenna contact area (50) from described principal piece.

3, antenna assembly (18 according to claim 2,24), the principal piece of wherein said antenna is arranged in the antenna plane, and described first and second tilting sections (32,34) point to the distant place from described antenna plane, so that two described contact jaws all be arranged on one with the isolated abreast contact area of described antenna area plane in, described antenna is connected to described antenna contact area.

4, antenna assembly according to claim 1 (18,24), wherein all contact jaws are hook-shaped.

5, antenna assembly according to claim 1 (18,24), wherein said conducting element is made by metal wire.

6, antenna assembly according to claim 1 (18,24), wherein said frequency band are FM, AM or SW frequency band.

7, antenna assembly according to claim 1 (18,24), this antenna assembly also comprises holding unit (18), this holding unit is used for the principal piece of described antenna is remained on the inside of described portable electron device.

8, antenna assembly (18 according to claim 7,24), this antenna assembly also is included as and is provided with contact jaw (33,35) each tilting section (32,34) guidance unit (40 that is provided with respectively, 42), and each this guidance unit all be configured to corresponding tilting section contact jaw is guided and the contact of corresponding antenna contact area (48,50).

9, antenna assembly according to claim 8, wherein said holding unit (18) has first side (36) and second opposite sides (46) and the guidance unit for the principal piece of fastening described antenna, described guidance unit is the one or more through holes (40 that stretch to this second side (46) from this first side (36), 42) form, each tilting section with contact jaw all stretches through corresponding through hole (40,42).

10, a kind of portable electron device (10), this portable electron device comprises:

The holding unit (18) that keeps antenna (24);

Circuit board (20) with at least one first antenna contact area (48); And

The antenna that can in frequency band, operate (24), this antenna comprises:

Elongated and conduct electricity radiation and/or radiation receiving element (24), it is used for being connected with described antenna contact area (48);

Wherein said conducting element (24) comprises principal piece (25,26,27,28,30), and this principal piece is fastened to described holding unit (18) and engages with the first elasticity tilting section (32) that tilts to leave from described principal piece at one end; And

Described first tilting section (32) has by described holding unit (18) and is squeezed into the contact jaw (33) that electrically contacts with the described first antenna contact area (48).

11, portable electron device according to claim 10 (10), wherein said circuit board (20) has the second antenna contact area (50), and the described principal piece (25 of described antenna (24), 26,27,28,30) engage with the second elasticity tilting section (34) that tilts to leave from described principal piece in end opposite, wherein said second tilting section has by described holding unit (18) and is squeezed into the contact jaw (35) that electrically contacts with the second antenna contact area (50).

12, portable electron device according to claim 10 (10), this portable electron device also is included as and is provided with contact jaw (33,35) each tilting section (32,34) guidance unit (40 that is provided with respectively, 42), and each this guidance unit all be configured to corresponding tilting section contact jaw guide with described circuit board (20) on the contact of corresponding antenna contact area (48,50).

13, portable electron device according to claim 12 (10), wherein said holding unit (18) has first side (36) for the principal piece of fastening described antenna (24), and second opposite sides (46) and guidance unit, described guidance unit is one or more through holes (40,42) form, each through hole (40 wherein, 42) stretch towards second side (46) from first side (36), near and each tilting section that antenna contact area (48) on the wherein said circuit board is arranged on second side (46) of described holding unit (18) all stretches by corresponding through hole (40,42).

14, portable electron device according to claim 13 (10), first side (36) of wherein said holding unit (18) is provided with slit (38), the principal piece (26 of described antenna (24), 28,30) remain in this slit, described slit has two ends, and wherein each through hole (40,42) is arranged on the respective end place in described slit.

15, portable electron device according to claim 12 (10), wherein each antenna contact area is aimed at corresponding guiding unit.

16, portable electron device according to claim 10 (10), wherein said antenna (24) is made by metal wire.

17, portable electron device according to claim 10 (10), wherein said frequency band are FM, AM or SW frequency band.

18, portable electron device according to claim 10 (10), this portable electron device also comprises protected location (44), first side (36) of the contiguous described holding unit of this protected location (18) also covers described antenna.

19, portable electron device according to claim 10 (10), wherein said holding unit (18), circuit board (20) and antenna (24) are arranged on the inside of described portable electron device (10).

20, portable electron device according to claim 10 (10), this portable electron device also comprise the radio circuit (22) that is connected with at least one antenna contact area (48).

21, portable electron device according to claim 20 (10), the length of wherein said antenna are selected as making described antenna and described radio circuit to be complementary.

22, portable electron device according to claim 20 (10), wherein said antenna has carried out surface treatment, so that antenna has performance and/or the impedance for matching that improves described antenna.