CN1836351B - Antenna structure and communication unit employing it - Google Patents
Antenna structure and communication unit employing it Download PDFInfo
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- CN1836351B CN1836351B CN2004800235730A CN200480023573A CN1836351B CN 1836351 B CN1836351 B CN 1836351B CN 2004800235730 A CN2004800235730 A CN 2004800235730A CN 200480023573 A CN200480023573 A CN 200480023573A CN 1836351 B CN1836351 B CN 1836351B
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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
- H01Q5/307—Individual or coupled radiating elements, each element being fed in an unspecified way
- H01Q5/342—Individual or coupled radiating elements, each element being fed in an unspecified way for different propagation modes
- H01Q5/357—Individual or coupled radiating elements, each element being fed in an unspecified way for different propagation modes using a single feed point
- H01Q5/364—Creating multiple current paths
- H01Q5/371—Branching current paths
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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
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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
- H01Q9/0407—Substantially flat resonant element parallel to ground plane, e.g. patch antenna
- H01Q9/0421—Substantially flat resonant element parallel to ground plane, e.g. patch antenna with a shorting wall or a shorting pin at one end of the element
-
- 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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- Computer Networks & Wireless Communication (AREA)
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Abstract
An antenna structure (1) comprising a substrate (2) on which a ground part is formed, a radiation electrode (3) arranged on one end side of the substrate (2), and a ground extension part (4) interconnecting the radiation electrode (3) and the ground part of the substrate (2). The ground extension part (4) connected with the opposite side edge parts of the radiation electrode (3) on the ground end (S) side is extended from the connecting part of the radiation electrode (3) connected with the ground end (S) side to the open end (K) side of the radiation electrode (3) and the fore ends of the ground extension part (4) is connected with the ground part of the substrate (2).
Description
Technical field
The present invention relates to a kind of antenna structure that is provided on the radio communications set (such as mobile phone), and relate to a kind of communicator of being furnished with this antenna structure.
Background technology
Figure 18 a is the schematic perspective view of the example of a kind of antenna structure (for example, consulting patent document 1).In antenna structure 30, emission electrode 31,32 is connected to each other by coupling part 33, and earthing conductor 34 is configured to towards emission electrode 31,32 and has certain distance betwixt.Emission electrode 31,32 all is connected in earthing conductor 34 by short-circuit conductor 35, and this short-circuit conductor 35 is connected in coupling part 33.In addition, coupling part 33 is connected to feed-through 36, and feed-through 36 for example is connected in radio circuit 37 so that radio communication to be provided with emission electrode 31,32 in communicator.
Patent document 1: do not examine Japanese patent application, publication number 2003-101336
Summary of the invention
Problem solved by the invention
This antenna structure 30 is by forming at position A, B shown in Figure 18 b and C curved conductor plate, and this conductor plate provides the shape shown in Figure 18 b by the stamping-out sheet metal.
Yet when the antenna mechanism among Figure 18 a 30 was observed from its side, antenna structure 30 had the U-shaped shape, and wherein emission electrode 31,32 and earthing conductor 34 are configured to toward each other.A conductor plate is bent and forms this U-shaped antenna structure 30 is quite to bother.Yet the antenna structure 30 of U-shaped shape requires at conductor plate also to be a problem very much under the situation of high surface area very.
An object of the present invention is to provide a kind of antenna structure cheaply that can be made easily, a kind of communicator that is equipped with this antenna structure is provided in addition.
The method that addresses this problem
Characteristics according to antenna structure of the present invention are: substrate with grounded part and the emission electrode of being formed and realized antenna operation by baseplate material are provided.One end of emission electrode is as earth terminal.The close subtend of emission electrode is set at the substrate top and forms certain distance and extend along the substrate surface of substrate between them in the part of the earth terminal other end.At least the subtend of the earth terminal of emission electrode is connected in the ground connection extension separately, and the ground connection extension extends from the other end of earth terminal to emission electrode.One end of each ground connection extension is connected in the grounded part of substrate.In addition, provide according to antenna structure of the present invention according to being characterized as of communicator of the present invention.
Advantage
Antenna structure according to the present invention comprises emission electrode and is connected to the ground connection extension of at least two subtends of emission electrode earth terminal.The other end of sending out in the earth terminal of the radio utmost point extends each ground connection extension from the tie point between ground connection extension and the emission electrode towards subtend.Except this configuration, when observing emission electrode and ground connection extension from the surface of emission electrode, emission electrode and ground connection extension do not overlap each other.Like this, can make antenna structure in the following manner easily.Especially, determine part that forms emission electrode and the part that forms the ground connection extension in the conductor plate upper punch.Subsequently, along vertical direction upwards bend emission electrode and with the earth terminal of emission electrode as the bottom.Then along the flatly folding crooked emission electrode in the centre position of emission electrode.Can easily form in a continuous manner thus according to emission electrode of the present invention and ground connection extension.Therefore, the present invention realizes the simplification manufacturing process of antenna structure, easily realizes the large-scale production of antenna structure thus.Therefore, can reduce the required manufacturing cost of antenna structure.
On the other hand, can form the ground connection extension by the identical width of width that the ground connection extension is provided between the side surface with the subtend of emission electrode.In this case, the ground connection extension is towards the surface of emission electrode and form certain distance betwixt and extend from the other end of the emission electrode of earth terminal towards subtend in earth terminal of emission electrode.In addition, an end of ground connection extension is connected in the grounded part of substrate.In this case, in order to form emission electrode and the ground connection extension that also forms certain distance betwixt and have same widths towards emission electrode above-mentioned with emission electrode, beneficially use pressurizing unit, it vertically makes metal parts (mould) displacement with the processing conductor plate with respect to conductor plate (sheet metal).Process conductor plate then in a continuous manner.Yet, this integration system that emission electrode and ground connection extension above-mentioned is carried out with technology above-mentioned bring up molded position be difficulty and need very high cost.
On the contrary, owing to can form emission electrode and ground connection extension by processing conductor plate continuously, can realize according to the present invention reducing advantages associated with the extensive manufacturing of the manufacturing process of simplifying antenna structure, antenna structure and the manufacturing cost of antenna structure.In detail, the antenna operation of response emission electrode, each ground connection extension is conduction current between the earth terminal of the grounded part of substrate and emission electrode.Even the ground connection extension has the width identical with emission electrode and has enough width towards emission electrode, the electric current that antenna operation produced of response emission electrode converges near all edges that are adjacent to the ground connection extension.In view of this aspect, even the zone in all edges that converge along electric current and the ground connection extension is set only, these ground connection extensions can not cause tangible unfavorable effect to the electrical characteristic of antenna structure.
Therefore, for example the ground connection extension usefully is arranged on the external position with respect to each side surface of emission electrode, and provides long and narrow shape so that the ground connection extension only is set in the fringe region that converges along electric current.The electrical characteristic that can prevent antenna structure like this produces disadvantageous effect, and can reduce simultaneously the surface area that is used to form the required conductor plate of emission electrode and ground connection extension.Therefore, this has reduced the material cost of antenna structure, thereby the cost that helps antenna structure reduces.
In addition, the bulk of being surrounded by emission electrode, ground connection extension and grounding parts branch is also referred to as the electric volume of emission electrode equally.The electric volume of emission electrode is corresponding to the radio-communication frequencies bandwidth of emission electrode.On the earth terminal of emission electrode and the tie point between each ground connection extension are set at respect to the external position of substrate one end and be positioned under the substrate so that subtend is positioned on the substrate in the emission electrode end of earth terminal.As a result, because the earth terminal of emission electrode protrudes from the substrate below, do not compare from the situation that protrude the substrate below with the earth terminal of emission electrode, the electric volume of emission electrode has more the amount of downward projection.Therefore, this helps to widen frequency band.
In addition; be set at emission electrode at extra ground connection extension and be arranged near the neutralization of the part of earth terminal under the situation between the surface, subtend of emission electrode, can further guarantee the emission electrode of substrate and the connection between the grounded part by the ground connection extension.
In addition, by emission electrode being divided into a plurality of emission electrode parts or a plurality of emission electrodes being configured to form side by side, for example the emission electrode part all can be carried out resonance further to widen frequency band or the radio communication of permission in different frequency with different resonance frequencys with emission electrode.
In addition, in emission electrode part at least one as feed type emission electrode part and remaining emission electrode part as non-feed type emission electrode part allow to be used for the wideer frequency band of radio communication because feed type emission electrode part and non-feed type emission electrode multi resonant partly shake.
In addition,, can prevent the distortion of ground connection extension, for example crooked and distortion by on one side of each ground connection extension, being provided for strengthening the rib of bending strength.In addition, by shear and the part of crooked emission electrode with formation feed electrode, can save the coupling part between emission electrode and the feed electrode.The connection fault that this prevents between emission electrode and feed electrode improves the reliability of antenna structure thus.
In addition, by provide dielectric part at least a portion of emission electrode, the electrical length of the emission electrode that effect produced increases because the wavelength of dielectric part shortens, and can reduce the size of emission electrode.
By providing for communicator according to antenna structure of the present invention, because the cost of antenna structure reduces, the cost of this communicator is reduced.In addition, the wideer frequency band of antenna structure helps carrying out new layout in communicator, such as the function that increases communicator.
The accompanying drawing summary
Fig. 1 a is the schematic diagram of expression according to the antenna structure of first embodiment.
Fig. 1 b is emission electrode and the schematic diagram of ground connection extension when observing from the bottom as shown in Figure 1a.
Fig. 1 c is the schematic diagram of an example that expression is used to form the conductor plate of emission electrode shown in Fig. 1 a and ground connection extension.
Fig. 2 is the end view according to the antenna structure of first embodiment.
Fig. 3 illustrates an example that is included in according to the manufacturing process of the emission electrode in the antenna structure of first embodiment.
Fig. 4 a illustrates the comparative example according to the antenna structure of first embodiment.
Fig. 4 b is the schematic diagram that an example of the conductor plate that is used to form emission electrode that Fig. 4 a represents and ground connection extension is shown.
Fig. 4 c shows electric current by being included in the path of the ground connection extension in the antenna structure shown in Fig. 4 a.
Fig. 5 a shows the simple manufacturing process according to the antenna structure of first embodiment.
Fig. 5 b shows the difficulty in the manufacturing of the antenna structure shown in Fig. 4 a.
Fig. 6 illustrates the correction example that is included in according to the emission electrode in the antenna structure of first embodiment.
Fig. 7 is the schematic diagram that expression is arranged on ribs each extensions C of emission electrode.
Fig. 8 a is the schematic diagram of another example that expression is used to form the conductor plate of emission electrode shown in Fig. 8 b and ground connection extension.
Fig. 8 b is another example of the ground connection extension represented with emission electrode of expression.
Fig. 9 illustrates the antenna structure according to second embodiment.
Figure 10 a illustrates another example that is included in according to the emission electrode in the antenna structure of second embodiment.
Figure 10 b illustrates another example that is included in according to the emission electrode in the antenna structure of second embodiment.
Figure 11 a illustrates the emission electrode that is included in according in the antenna structure of the 3rd embodiment.
Figure 11 b is emission electrode shown in Figure 11 a and the ground connection extension schematic diagram when observing from the bottom.
Figure 12 is the schematic diagram of expression according to the antenna structure of the 4th embodiment.
Figure 13 a illustrates the correction example according to the antenna structure of the 4th embodiment.
Figure 13 b is emission electrode shown in Figure 13 a and the ground connection extension schematic diagram when observing from the bottom.
Figure 14 illustrates another example of the feeder equipment that is used for emission electrode.
Figure 15 a illustrates another configuration example of emission electrode.
Figure 15 b illustrates another configuration example of emission electrode.
Figure 16 is the end view that emission electrode is provided with an example of dielectric part.
Figure 17 illustrates another example of emission electrode.
Figure 18 a illustrates an example of patent document 1 disclosed antenna structure.
Figure 18 b is the schematic diagram of an example that is used to form the conductor plate of antenna structure shown in Figure 18 a.
Reference number
1 antenna structure
2 substrates
3 emission electrodes
4,4 ' ground connection extension
5 conductor plates
8 feed electrodes
14 ribs
15,16,17 emission electrode parts
18 emission electrodes are separated slit
22 cutouts
The invention preferred forms
Now consulting accompanying drawing describes all embodiment of the present invention.
Fig. 1 a is the schematic perspective view according to the antenna structure of first embodiment.Fig. 2 is the schematic side elevation according to the antenna structure of first embodiment.Antenna structure 1 according to first embodiment comprises: the substrate 2 that is provided with grounded part (not shown); Be arranged on the emission electrode 3 of substrate 2 one ends; And the ground connection extension 4 that emission electrode 3 is connected in the grounded part of substrate 2.Substrate 2 is included in the circuit substrate in the radio communications set (such as mobile phone).
Shown in Fig. 1 c, form emission electrode 3 and ground connection extension 4 by the extruding and the conductor plate 5 of crooked rectangle.In detail, by along dotted line α shown in Fig. 1 c and curved conductor plate 5, conductor plate 5 is divided into first type surface part 3A and vertical part 3B.The end of first type surface part 3A is arranged in the subtend mode on the substrate surface of substrate 2, and is simultaneously spaced apart with substrate surface.On the other hand, vertically part 3B is vertically standing with respect to the external position place of substrate 2 ends that are provided with emission electrode 3.
Subtend edge K1, the K2 of conductor plate 5 is respectively equipped with slit 6 (6a, 6b), and they are shaped by extruding (stamping-out).Slit 6 extends into conductor plate 5 and extends to the earth terminal of emission electrode 3 subsequently from their each side.In first embodiment, the formation of slit 6 (6a, 6b) and produce ground connection extension 4, this means all ground connection extensions 4 be by respectively along subtend edge K1, K2 shear conductor plate 5 sidepiece so that these parts split from emission electrode 3.Each ground connection extension 4 is bent to extend to substrate 2 from its basic point, and basic point is the tie point 7 between ground connection extension 4 and the emission electrode 3.
In first embodiment, the earth terminal of emission electrode 3 is positioned at substrate 2 belows.In other words, the tie point between emission electrode 3 and each the ground connection extension 4 is positioned at substrate 2 belows.Each ground connection extension 4 has: along perpendicular to the direction of the vertical part 3B of emission electrode 3 from the tie point between emission electrode 3 and the ground connection extension 4 to first that substrate 2 extends; Along the end surfaces of substrate 2 that is provided with emission electrode 3 and vertical second portion; And by form and be connected in the third part of the grounded part of substrate 2 along the end face crooked second vertical end partly of substrate 2.
Can use link material (such as scolder) that ground connection extension 4 and substrate 2 are combined, or use securing member to bond them together.On the other hand, Fig. 2 illustrates an example, and wherein antenna structure 1 entirely is contained in the end of housing (lid) 10 of communicator, shown in chain-dotted line among the figure.According to embodiment shown in this Fig, the first type surface part 3A of emission electrode 3 receives from covering 10 downward pressure.Because from lid 10 this downward pressure, whole emission electrode 3 pushed downwards so that ground connection extension 4 by contacting the end face that is connected in substrate 2 with the pressure of end face.Therefore, ground connection extension 4 can be connected in substrate 2 with this pressure way of contact.As mentioned above, have the technology of multiple connection ground connection extension 4 and substrate 2 here, and therefore interconnection technique be not limited to above-mentioned those.
Fig. 1 b is emission electrode 3 shown in Fig. 1 a and ground connection extension 4 schematic diagram when observing from the bottom.Consult Fig. 1 a and 1b, according to first embodiment, the part of the first type surface part 3A of emission electrode 3 is to substrate 2 bendings, and sweep defines feed electrode 8 thus.The substrate surface that is provided with emission electrode 3 near substrate 2 ends partly has feed pad (not shown), and it is connected in radio circuit 11 (see figure 2)s of communicator.Radio circuit 11 is used for radio communication.Feed electrode 8 is connected in feed pad.Emission electrode 3 is via feed electrode 8 and feed pad and be connected in radio circuit 11.Feed electrode 8 and feed pad can by the fibre weldering or by from cover 10 put on emission electrode 3 pressure and each other the mode that contacts of pressure be connected to each other.Therefore, the interconnection technique between two parts is unrestricted.
For example, when the signal that sends when radio circuit 11 offers emission electrode 3 via feed electrode 8, supply with in response to this signal, as shown in Figure 1a, electric current I is through the ground connection extension 4 of emission electrode 3 and vertically part 3B is mobile to first type surface part 3A, thereby flows through emission electrode 3 with circulating current system.The stimulated emission electrode 3 thus, send by this signal by radio frequency send out.On the other hand, when emission electrode 3 during from the external source received signal, then response signal receives and the stimulated emission electrode.The signal that is received is sent to radio circuit 11 from emission electrode 3 via feed electrode 8 subsequently.
Then, shown in part M3, the outer rim of feed electrode 8 is by pressure and stamping-out shown in part M4, is bent downwardly feed electrode 8.Shown in part M5, ground connection extension 4 uses molded and bending forming.Subsequently, emission electrode 3 vertically be bent upwards and with the earth terminal of emission electrode 3 as the bottom.Then, shown in part M6, the emission electrode 3 that this is crooked is flatly folding along the centre position of emission electrode 3.Form the first type surface part 3A and the vertical part 3B of emission electrode 3 like this.Therefore, emission electrode 3, ground connection extension 4 and feed electrode 8 are formed.
According to this first embodiment, when emission electrode 3 and ground connection extension 4 when the top of Fig. 1 a is observed, emission electrode 3, ground connection extension 4 and feed electrode 8 do not overlap each other.For this reason, extruding of available continuation mode and bending metals thin slice 12 and formation emission electrode 3.As a result, the manufacturing process of antenna structure 1 is simplified, and can realize the large-scale production of antenna structure 1 thus easily.In addition, owing to use crooked mold shape simple, be used to design the required time of this mould also be shortened.
In addition, because emission electrode 3, ground connection extension 4 and feed electrode 8 form by processing monolithic conductor plate in first embodiment, this manufacturing process does not need to use the Connection Step that emission electrode 3 is connected in the Connection Step of ground connection extension 4 and emission electrode 3 is connected in feed electrode 8.In addition, owing to be to be connected in substrate 2 and the end of feed electrode 8 is connected in substrate 2 by all ends with ground connection extension 4 simply to form according to this antenna 1 of first embodiment, the assembling procedure of antenna structure 1 is simplified.
In addition, do not use link material (such as scolder) to be bonded to each other owing to emission electrode 3 and ground connection extension 4 also has emission electrode 3 and feed electrode 8, solved like this with emission electrode 3 and ground connection extension 4 and emission electrode 3 and feed electrode 8 between the relevant problem of connection fault.In addition, can for example prevent the variation of antenna performance, this may be caused by the variation of the connection status between the connection status between emission electrode 3 and the ground connection extension 4 and emission electrode 3 and the feed electrode 8.Therefore, this reliability that has improved antenna structure 1 and be equipped with the communicator of this antenna structure 1.
On the other hand, can be by form emission electrode 20 and the ground connection extension of representing with stereogram among Fig. 4 a 21 along the dotted line curved conductor plate shown in Fig. 4 b.Although comprise that at emission electrode 20 this emission electrode 20 is similar to the emission electrode 3 according to first embodiment on first type surface part 20A and vertical this aspect of part 20B, ground connection extension 21 is different with the ground connection extension 4 according to first embodiment.Especially, slit 6 forms by the sidepiece of conductor plate 5 is isolated out from emission electrode 3 according to the ground connection extension 4 of first embodiment.On the contrary, according to the configuration shown in Fig. 4 b, ground connection extension 21 only be the extension of emission electrode 20 and from an end of conductor plate along configuration first type surface part 20A and vertically the direction of part 20B extend.For this reason, according to the configuration shown in Fig. 4 a and Fig. 4 b, because this conductor plate needs this extension (promptly forming the part of the conductor plate of ground connection extension 21), compares the antenna structure 1 according to first embodiment, conductor plate needs bigger surface area to form emission electrode and ground connection extension.
On the other hand, when emission electrode 20 during from lateral observation, the identical (see figure 2) of end view of its end view and emission electrode 3.For this reason, if emission electrode 3 and 20 has identical size, these two electrodes have roughly the same electric volume.In other words, vertically part 3B has identical size with 30B if first type surface part 3A has identical size with 20A, if it is and identical with distance between vertical part 20B and the substrate 2 in the vertical distance between part 3B and the substrate 2, if and vertically part 3B protrudes identical length downwards with 20B, emission electrode 3 and 20 has roughly the same electric volume.
In addition, than ground connection extension 21, each is less on width according to the ground connection extension 4 of first embodiment.This can occur from the grounded part of substrate 2 and by ground connection extension 4 to emission electrode 3 flow electric current might produce the situation of adverse influence.Yet, even ground connection extension 21 is bigger on width, from substrate 2 to emission electrode 20 flow electric current converge near the edge of ground connection extension 21 the zone, shown in Fig. 4 c.Therefore, in emission electrode 3 both sides narrow frame shape ground connection extension 4 is set respectively first embodiment even resemble, also can prevent from substrate 2 and by ground connection extension 4 to emission electrode 3 flow electric current affect adversely.In other words, owing to form narrower ground connection extension 4, need not to worry that antenna performance can degenerate.
Therefore, compare the structure shown in Fig. 4 a, the antenna structure 1 that can make easily according to first embodiment for example prevents simultaneously because the deterioration of the electrical characteristic of the caused emission electrode of minimizing (antenna) of the electric volume of emission electrode.In addition, first embodiment also is being comparatively favourable aspect the surface area of cutting down the required conductor plate of formation emission electrode significantly.
In addition, emission electrode shown in Fig. 4 a 20 and ground connection extension 21 be by inference by for example make metal parts with respect to conductor plate vertically the pressurizing unit of displacement form with the curved conductor plate.In this case, such shown in solid line among Fig. 5 b, after emission electrode 20 is with respect to ground connection extension 21 bending vertically, shown in Fig. 5 b dotted line like that, wish metal parts 26 in the drawings vertical dislocation to by the position shown in the dotted line among Fig. 5 b to use the first type surface part 20A of the crooked emission electrode 20 of metal parts 26 along continuous straight runs (direction that is parallel to ground connection extension 21).Yet in the structure shown in Fig. 4 a, because the appearance of ground connection extension 21, metal parts 26 can't be set on the position of being represented by dotted line among the figure.For this reason, by make metal parts with respect to conductor plate vertically the pressurizing unit of displacement be very difficult with the structure that the curved conductor plate forms shown in Fig. 4 a.
On the contrary, according to the antenna structure 1 of first embodiment, at emission electrode 3 after solid line is bent upwards shown in Fig. 5 a, metal parts 26 can not be subjected to the interference of ground connection extension 4 along emission electrode 3 location of bending.Like this, can use the first type surface part 3A of the flatly crooked emission electrode 3 of metal parts 26.In other words, according to the configuration of first embodiment, can use to make metal parts make antenna structure 1 easily with the curved conductor plate with respect to the pressurizing unit of conductor plate displacement in vertical direction.
According to the above-mentioned explanation of reference Fig. 1, the subtend part of emission electrode 3 (conductor plate 5) forms ground connection extension 4 respectively.On the other hand, Fig. 6 shows one and revises example, and wherein the ground connection extension 4 except the subtend that is arranged on conductor plate 5 also provides additional ground connection extension 4 '.Specifically, additional ground connection extension 4 ' is set at the earth terminal place and is arranged between the subtend of conductor plate 5, and isolates from emission electrode 3 with ground connection extension formation slit and to open.This additional ground connection extension 4 ' helps having better connection reliability between ground connection extension 4 and substrate 2.In Fig. 6, emission electrode 3 and ground connection extension 4,4 ' are depicted as the appearance of observing (from beneath) from the nearside of substrate 2.Also have a kind of situation in addition, wherein the parts of communicator (such as loud speaker) be set at space Z near the outside of substrate 2 ends that are arranged on emission electrode 3 (in seeing that Fig. 1 is a), promptly by emission electrode 3 and ground connection extension 4 surround space Z.Under the situation that is provided with additional ground connection extension 4 ', the position and the width of additional ground connection extension 4 ' is set according to the location that is arranged on the parts among the Z of space.
In first embodiment, ground connection extension 4 is much narrower than emission electrode 3.For this reason, the influence that ground connection extension 4 may be out of shape, for example crooked or distortion.In order to prevent this situation, as shown in Figure 7, can bending strength ribs 14 be set along each ground connection extension 4.Can be folded to form each bending strength ribs 14 by the bossing on the edge that will be arranged on corresponding ground connection extension 4.
In addition, in Fig. 1, be arranged on ground connection extension in the conductor plate 5 and form slit 6 and extend into conductor plate 5 and extend to the earth terminal of emission electrode 3 from its each side.Perhaps, shown in Fig. 8 a, each slit 6 can extend to earth terminal by the open end along the respective side surface of conductor plate 5 from emission electrode 3 point-blank.Because these slits 6, ground connection extension 4 isolates out from emission electrode 3, forms the antenna structure of representing with stereogram 1 shown in Fig. 8 b thus.
The orientation of antenna structure 1 is not limited to orientation shown in Figure 1.For example, vertically mode is provided with substrate 2 or can be towards the bottom surface of substrate 2 and first type surface part 3A is set.
To describe second embodiment below, and below in the explanation of second embodiment, be endowed identical label with parts identical among first embodiment, and save explanation these parts.
With among second embodiment shown in the stereogram mode, emission electrode 3 (conductor plate 5) has two emission electrodes and separates slit 18 (18a, 18b) and have certain distance betwixt in Fig. 9.Emission electrode is separated the open end of slit 18a along the wherein side of emission electrode 3 all sides from emission electrode 3 and is extended to the earth terminal of emission electrode 3.On the other hand, emission electrode is separated slit 18b and is extended into emission electrode 3 and extend along the side of emission electrode 3 towards the earth terminal of emission electrode 3 from its opposite side.
Emission electrode is separated slit 18a, 18b emission electrode 3 is divided into a plurality of emission electrode parts 15,16,17. Emission electrode part 15,16,17 has first type surface subdivision (15A, 16A, 17A) and vertical subdivision (15B, 16B, 17B) respectively. Emission electrode part 15,16,17 locates to be interconnected in two ground connection extensions 4 of emission electrode 3 to be grounded on the grounded part of substrate 2 in the bottom (earth terminal) of vertical part 3B (15B, 16B, 17B).
In a second embodiment, emission electrode part 15 is provided with by the feed electrode of shearing and the part of the surperficial subdivision 15A of curved major forms 8.Emission electrode part 15 is thus as feed type emission electrode part.On the other hand, Sheng Xia emission electrode part 16,17 is as non-feed type emission electrode part.Each non-feed type emission electrode part 16,17 electromagnetic coupled is in feed type emission electrode part 15 and realize that with emission electrode part 15 antenna operation is to produce the multi resonant state that shakes thus.
According to second embodiment, the multi resonant that is produced by a plurality of emission electrode parts 15,16,17 shakes and allows this antenna structure 1 that wideer frequency band is used for radio communication, or the radio communication of permission in different frequency bands.
In a second embodiment, emission electrode 3 is provided with two emission electrodes separation slits 18.Perhaps, consider required frequency bandwidth based on the size of emission electrode 3 or specification, emission electrode 3 can only be provided with that an emission electrode is separated slit 18 or three or more emission electrode is separated slit 18.In the previous case, emission electrode 3 is separated into two emission electrode parts, and under latter event, emission electrode 3 is divided into four or a plurality of emission electrode part.
In addition, in a second embodiment, ground connection extension 4 is set on the subtend (conductor plate 5) of emission electrode 3.Perhaps, as first embodiment is described,, also can provide the additional ground connection extension 4 ' shown in Fig. 6 except the ground connection extension 4 on the subtend that is arranged on emission electrode 3.
In addition, in second embodiment shown in Figure 9, one in only a plurality of emission electrode parts 15,16,17 as feed type emission electrode part.Perhaps shown in Figure 10 a, for example according to specification, at least two in a plurality of emission electrode parts can be provided with feed electrode 8 so that a plurality of feed type emission electrode parts to be provided.The another kind of selection is that any non-feed type emission electrode part is not provided, and all emission electrode parts can be the feed types.
In addition, shown in Figure 10 b, the end that each emission electrode is separated slit 18 close earth terminals is set at than on the higher position, position shown in Figure 9.In detail, shown in Figure 10 b, for example the distance of separating the end of slit 18 to each emission electrode from the basic point of vertical part 3B is configured to 0.5mm or more.Therefore, this has increased the intensity of emission electrode 3.
To describe the 3rd embodiment below, below in the explanation to the 3rd embodiment, those with first and second embodiment in identical parts be endowed identical label, and save explanation to these parts.
Figure 11 a and Figure 11 b are the schematic perspective view that is included in according to the emission electrode in the antenna structure of the 3rd embodiment.Emission electrode 3 when Figure 11 a represents to observe from substrate 2 tops.Emission electrode 3 when Figure 11 b illustrates from substrate 2 beneath.
In the 3rd embodiment, ground connection extension 4 is separately positioned on the subtend of the earth terminal of emission electrode 3.In addition, Fu Jia ground connection extension 4 ' is set at the earth terminal place and is arranged between the subtend of emission electrode 3.In addition, emission electrode 3 is provided with cut part 22, and extend to the open end of first type surface part 3A from the cut groove Q corresponding to additional ground connection extension 4 ' this cut part 22.Cut groove Q and cut part 22 are defined emission electrode together and are separated slit, and emission electrode 3 is divided into a plurality of emission electrode parts 15,16 thus.
In the 3rd embodiment shown in Figure 11 a and Figure 11 b, of emission electrode part 15,16 is provided with feed electrode 8 with as the feed type, and another emission electrode is partly as non-feed type.Feed type and non-feed type emission electrode part 15,16 produces the multi resonants state that shakes.This multi resonant shakes and allows wideer frequency band, or allows the radio communication in different frequency bands.
Although in the 3rd embodiment shown in Figure 11 a and Figure 11 b, in the emission electrode part 15,16 one as the feed type and another emission electrode partly as non-feed type, yet two emission electrode parts 15,16 all can be used as the feed type.
In addition, in the 3rd embodiment shown in Figure 11 a and Figure 11 b, although only provide an additional ground connection extension 4 ' (it is by shearing and the part of crooked emission electrode 3 forms), yet emission electrode 3 also can be provided with a plurality of additional ground connection extensions 4 '.Under the sort of situation, provide a plurality of cut parts 22 of each the cutting groove Q place beginning continuous extension corresponding with additional ground connection extension 4 '.Cut groove Q and cut part 22 form emission electrode and separate slit, and it is divided into three or more emission electrode part with emission electrode 3.Under the sort of situation, but emission electrode part resonance in different resonance frequencys further widening frequency bandwidth, or allow the radio communication under different frequency bands.
Now the 4th embodiment is described, below in the explanation to the 4th embodiment, those with first to the 3rd embodiment in identical parts be endowed identical label, and omit explanation to those parts.
In the antenna structure of the 4th embodiment shown in Figure 12, an end of substrate 2 is provided with a plurality of emission electrodes 3 (3 α, 3 β), their separate certain distances.At least one has the configuration according to the emission electrode 3 of first to the 3rd embodiment in the emission electrode 3 (3 α, 3 β).
In the 4th embodiment shown in Figure 12, will be provided with abreast corresponding to the emission electrode 3 (3 α) of a plurality of emission electrode parts 15,16 of having of second embodiment and as emission electrode 3 (3 β) corresponding to the change example of the emission electrode 3 of first embodiment.As making ground connection extension 4 be connected in the replacement of the subtend of emission electrode 3 β earth terminals, correction type emission electrode 3 β only have a ground connection extension 4 (4 β) that is connected in earth terminal one side of emission electrode 3 β.In this case, emission electrode 3 β be not provided with the non-feed type electrode of feed electrode 8 and electromagnetic coupled in the emission electrode part 15 of emission electrode 3 α of feed type electrode to produce the multi resonant state that shakes.
As the alternative form of configuration shown in Figure 12, the configuration shown in for example also can application drawing 13a.Especially, in example shown in Figure 13 a, a plurality of emission electrodes 3 (3 α, 3 β) be arranged side by side so that each emission electrode 3 with consistent according to the type of first embodiment.In this case, among emission electrode 3 α, 3 β as the feed type and another is as non-feed type.Emission electrode 3 α, 3 β shown in Figure 13 a when Figure 13 b represents to observe from the nearside (from the bottom) of substrate 2.In example shown in Figure 13 a, Figure 13 b, although emission electrode 3 α, 3 β one as the feed type and another as non-feed type, also can make two emission electrode 3 α, 3 β all as the feed type.
Shown in Figure 13 a and Figure 13 b, in the 4th embodiment, a plurality of emission electrodes 3 according to any one same type of first to the 3rd embodiment are arranged side by side and are formed betwixt certain distance, or also can be arranged side by side according to the combination of the dissimilar emission electrode of first to the 3rd embodiment, perhaps, according at least one emission electrode of first to the 3rd embodiment with can be arranged side by side and be formed betwixt certain distance with the emission electrode that has different configurations according to first to the 3rd embodiment.
With combination is arranged side by side according to the emission electrode of first to the 3rd identical or different type of embodiment situation under, can when being in their state arranged side by side, form emission electrode by extruding and bending metals thin slice 12.
To describe the 5th embodiment now, the 5th embodiment relates to a kind of communicator.Is furnished with antenna structure 1 on the communicator according to the 5th embodiment according to first to fourth embodiment.Antenna structure 1 is had been described in detail owing to top, will omit this explanation below.Except the configuration of antenna structure 1, this communicator can have polytype configuration in addition, and therefore the configuration of any kind can be applicable to this communicator.Therefore will omit explanation below to this class configuration.
Technical scope of the present invention is not limited only to first to the 5th embodiment, and the modification of carrying out in scope and spirit of the present invention allows.For example, in first to the 5th embodiment, although the part that feed type emission electrode 3 (or emission electrode part 15) is gone up by shearing and curved major surface portion 3A (15A) is provided with feed electrode 8, the device that is used for feed type emission electrode 3 (emission electrode part 15) is connected in the radio circuit 11 of communicator is not limited to the feed electrode.For example, the feed pin of representing with end view among Figure 14 23 that is formed by conductor material also can be employed.This feed pin 23 has elasticity and the radio circuit that is connected on the substrate surface that is arranged on substrate 2 connects on the feed pad (not shown).
In addition, although be by shearing and the part of the first type surface part 3A of crooked emission electrode 3 forms feed electrode 8, the position of this feed electrode 8 is unrestricted.For example, feed electrode 8 also can form by shearing with the crooked vertically part of part 3B.In addition, the tie point between feed pin 23 and the emission electrode 3 is not limited to the point in the example shown in Figure 14.Can consider the resistors match between the emission electrode 3 and radio circuit 11 for example and feed placement in the emission electrode 3 is set, and therefore the feed placement in the emission electrode 3 is not limited to for example position shown in Figure 14.
In addition, although each ground connection extension 4 is connected in substrate 2 in first to the 5th embodiment, yet the end of each ground connection extension 4 also can be connected in as the housing on ground or as the end with each ground connection extension 4 and is connected in the replacement of substrate 2 and is connected in the grounded part that is arranged in the housing that is formed by insulating material.This is suitable for a kind of situation, promptly be accommodated in the housing of communicator and housing itself formed and by the conductor material such as magnesium alloy, perhaps make the housing that forms by insulating material be provided with conductor part (being grounded part) as ground such as resin thus as ground connection according to the antenna structure 1 of first to the 5th embodiment.
In addition, although each of first to the 5th embodiment adopts the direct feed technology so that emission electrode 3 is directly connected in radio circuit 11 via feed electrode 8, but also can adopt the electric capacity feeding technique, wherein emission electrode 3 is connected in radio circuit 11 via electric capacity.
In addition, for example be contained at antenna structure 1 under the situation of lid 10 ends of communicator, shown in Figure 15 a and Figure 15 b, emission electrode 3 can have the shape of extending along the inner surface of lid 10 ends and maximize with the electric volume with emission electrode 3.Specifically, in example shown in Figure 15 a, vertically part 3B is positioned at substrate 2 belows with respect to first type surface part 3A, and first type surface part 3A has the part corresponding with the shape of covering 10 and cuts the conical surface.On the other hand, in example shown in Figure 15 b, the coupling part between first type surface part 3A and the vertical part 3B is not vertical but provides the corresponding circular shape of shape a kind of and lid 10.
In addition, shown in the end view of Figure 16, in order to reduce the size of emission electrode 3, emission electrode 3 can partly or wholly be provided with dielectric part 24 near on the surface of substrate 2.Wavelength effect based on dielectric part 24 shortens can reduce emission electrode 3 dimensionally.
In addition, can for example dielectric part 24 be arranged on abreast between all emission electrodes part of emission electrode 3 or between a plurality of emission electrode.Select as another, with emission electrode 3 ends of emission electrode 3 earth terminal subtends can be to substrate 2 bendings, shown in the end view of Figure 17 like that.
Commercial Application
Therefore, the present invention realizes small size, low cost, high performance antenna structure and the communicator of being furnished with this antenna structure. Therefore, the present invention can for example usefully be applied to common small size radio communications set and the antenna structure that comprises these devices.
Claims (12)
1. antenna structure, comprise substrate with grounded part and the emission electrode that forms and carry out antenna operation by panel material, wherein, emission electrode comprises that changing bearing of trend with respect to the surperficial upwardly extending vertical part of substrate and from the end of vertical part becomes the first type surface part of extending along the direction of substrate surface, this first type surface part and substrate surface are turned up the soil at interval and are extended and have a end as open end, wherein, the bottom of the vertical part of emission electrode is as earth terminal, extend at two ends from the Width of vertical part the ground connection extension, these two ends are connected in earth terminal, and the ground connection extension extends by the open end of outer fix towards the first type surface part with respect to the two ends on the Width of first type surface part, the end of each ground connection extension is connected in the grounded part of substrate, wherein, if first type surface part, vertically part and ground connection extension all extend in one plane, then the ground connection extension has one to separate slit between dividing with vertical part and main surface portion, and wherein, emission electrode and two ground connection extensions are around a space is arranged.
2. antenna structure as claimed in claim 1, it is characterized in that, described emission electrode and ground connection extension are accommodated in as in the housing on ground or be contained in the housing with grounded part, and the end of each ground connection extension is connected to as the housing on ground or is connected in the grounded part that is arranged in the housing, as the housing on ground or be arranged on the grounded part that grounded part in the housing replaces substrate.
3. antenna structure as claimed in claim 1, it is characterized in that, the close earth terminal of emission electrode and the part between surface, emission electrode subtend are sheared, to be formed for forming the slit of ground connection extension in emission electrode, the described part that is sheared defines an additional ground connection extension.
4. antenna structure as claimed in claim 1, it is characterized in that, the earth terminal of emission electrode is set at the outer fix with respect to substrate one end, wherein the tie point between the earth terminal of emission electrode and each the ground connection extension is positioned at the substrate below, and wherein the open end of the first type surface of emission electrode part is positioned at the substrate top.
5. antenna structure as claimed in claim 1 is characterized in that, emission electrode is provided with at least one and separates slit to the emission electrode that earth terminal extends, and emission electrode is divided into a plurality of emission electrode parts thus.
6. antenna structure as claimed in claim 5, it is characterized in that, in the emission electrode part at least one is as feed type emission electrode part, and remaining emission electrode is partly as non-feed type emission electrode part, non-feed type emission electrode part electromagnetic coupled is in feed type emission electrode part, realizes producing the shake antenna operation of state of multi resonant with feed type emission electrode part thus.
7. antenna structure comprises a plurality ofly keeping certain distance each other and the emission electrode that is provided with at substrate one end that at least one in wherein a plurality of emission electrodes is as claim 1,5 or 6 described emission electrodes.
8. antenna structure as claimed in claim 1 is characterized in that, the part of emission electrode is sheared and to curved substrate, emission electrode is connected in the feed pad that is arranged on the substrate, feed pad is connected in radio circuit to described part as the feed electrode.
9. antenna structure as claimed in claim 1 is characterized in that described substrate surface is provided with the feed pad that is connected in radio circuit, and described feed pad and position emission electrode thereon are connected to each other with the rubber-like conductor.
10. antenna structure as claimed in claim 1 is characterized in that at least a portion of emission electrode is provided with dielectric part.
11. antenna structure as claimed in claim 1 is characterized in that, one side each ground connection extension be provided with the rib that is used to strengthen bending strength.
12. communicator that comprises antenna structure as claimed in claim 1.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2003299138 | 2003-08-22 | ||
| JP299138/2003 | 2003-08-22 | ||
| PCT/JP2004/011995 WO2005020371A1 (en) | 2003-08-22 | 2004-08-20 | Antenna structure and communication unit employing it |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1836351A CN1836351A (en) | 2006-09-20 |
| CN1836351B true CN1836351B (en) | 2010-08-18 |
Family
ID=34213746
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2004800235730A Expired - Fee Related CN1836351B (en) | 2003-08-22 | 2004-08-20 | Antenna structure and communication unit employing it |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP1657785A4 (en) |
| JP (1) | JP4013978B2 (en) |
| CN (1) | CN1836351B (en) |
| WO (1) | WO2005020371A1 (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005076409A1 (en) | 2004-01-30 | 2005-08-18 | Fractus S.A. | Multi-band monopole antennas for mobile network communications devices |
| WO2007098810A2 (en) * | 2005-04-14 | 2007-09-07 | Fractus, S.A. | Antenna contacting assembly |
| WO2007014737A2 (en) | 2005-08-01 | 2007-02-08 | Fractus, S.A. | Antenna with inner spring contact |
| KR100881639B1 (en) | 2007-03-20 | 2009-02-04 | 삼성탈레스 주식회사 | Antenna for ultra high frequency |
| GB2449910B (en) * | 2007-06-07 | 2009-08-26 | Cameo Comm Inc | Antenna and wireless network device having the same |
| CN102484313B (en) | 2010-07-05 | 2015-07-01 | 松下电器（美国）知识产权公司 | Antenna device, and wireless communication device |
| EP2592692A4 (en) * | 2010-07-05 | 2014-04-23 | Panasonic Corp | Antenna device, and wireless communication device |
| JP5475730B2 (en) | 2011-08-26 | 2014-04-16 | 学校法人智香寺学園 | Plate-shaped inverted F antenna |
| JP5475729B2 (en) * | 2011-08-26 | 2014-04-16 | 学校法人智香寺学園 | Plate-shaped inverted F antenna |
| EP3336963A1 (en) * | 2016-12-16 | 2018-06-20 | Thomson Licensing | Edge mount low-profile radio frequency antenna |
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| US5635942A (en) * | 1993-10-28 | 1997-06-03 | Murata Manufacturing Co., Ltd. | Microstrip antenna |
| US5757326A (en) * | 1993-03-29 | 1998-05-26 | Seiko Epson Corporation | Slot antenna device and wireless apparatus employing the antenna device |
| EP0851531A2 (en) * | 1996-12-23 | 1998-07-01 | Nokia Mobile Phones Ltd. | Antenna assembly |
| CN1322392A (en) * | 1999-09-30 | 2001-11-14 | 株式会社村田制作所 | Surface-mount antenna and communication device with surface-mount antenna |
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| JPH01245721A (en) * | 1988-03-28 | 1989-09-29 | Matsushita Electric Works Ltd | Radio equipment |
| JP3473087B2 (en) * | 1993-03-29 | 2003-12-02 | セイコーエプソン株式会社 | Slot antenna device and wireless device using this antenna device |
| JPH08111609A (en) * | 1994-10-11 | 1996-04-30 | Murata Mfg Co Ltd | Antenna system |
| JP3344415B2 (en) * | 1995-02-14 | 2002-11-11 | 三菱電機株式会社 | Antenna device |
| EP0818847A3 (en) * | 1996-07-10 | 1998-12-02 | Ascom Tech Ag | Antenna construction |
| JP3467164B2 (en) * | 1997-01-10 | 2003-11-17 | シャープ株式会社 | Inverted F antenna |
| WO2001033665A1 (en) * | 1999-11-04 | 2001-05-10 | Rangestar Wireless, Inc. | Single or dual band parasitic antenna assembly |
| JP2000068736A (en) * | 1998-08-21 | 2000-03-03 | Toshiba Corp | Multi-frequency antenna |
| JP2001251118A (en) * | 2000-03-07 | 2001-09-14 | Nec Corp | Portable radio equipment |
| SE0002387L (en) * | 2000-06-26 | 2001-12-27 | Allgon Ab | Antenna device |
| JP3873684B2 (en) * | 2001-07-31 | 2007-01-24 | 株式会社日本自動車部品総合研究所 | Wireless communication equipment |
| JP2003078333A (en) * | 2001-08-30 | 2003-03-14 | Murata Mfg Co Ltd | Radio communication apparatus |
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| JP2003218628A (en) * | 2002-01-17 | 2003-07-31 | Ngk Insulators Ltd | Connection structure for plate antenna and circuit board built in wireless installation |
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2004
- 2004-08-20 JP JP2005513308A patent/JP4013978B2/en not_active Expired - Fee Related
- 2004-08-20 WO PCT/JP2004/011995 patent/WO2005020371A1/en active Application Filing
- 2004-08-20 EP EP04771956.2A patent/EP1657785A4/en not_active Withdrawn
- 2004-08-20 CN CN2004800235730A patent/CN1836351B/en not_active Expired - Fee Related
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| US5757326A (en) * | 1993-03-29 | 1998-05-26 | Seiko Epson Corporation | Slot antenna device and wireless apparatus employing the antenna device |
| US5635942A (en) * | 1993-10-28 | 1997-06-03 | Murata Manufacturing Co., Ltd. | Microstrip antenna |
| EP0851531A2 (en) * | 1996-12-23 | 1998-07-01 | Nokia Mobile Phones Ltd. | Antenna assembly |
| CN1322392A (en) * | 1999-09-30 | 2001-11-14 | 株式会社村田制作所 | Surface-mount antenna and communication device with surface-mount antenna |
Also Published As
| Publication number | Publication date |
|---|---|
| JPWO2005020371A1 (en) | 2007-11-01 |
| EP1657785A1 (en) | 2006-05-17 |
| JP4013978B2 (en) | 2007-11-28 |
| WO2005020371A1 (en) | 2005-03-03 |
| EP1657785A4 (en) | 2013-12-11 |
| CN1836351A (en) | 2006-09-20 |
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