CN103682638B - There is antenna structure and the manufacture method thereof of three operational frequency bands - Google Patents

Abstract

It relates to have antenna structure and the manufacture method thereof of three operational frequency bands.A kind of antenna structure with three operational frequency bands comprises Department of Radiation.This Department of Radiation comprises the first conductor branch path, the second conductor branch path and the 3rd conductor branch path.This second conductor branch path is electrically connected to this first conductor branch path；3rd conductor branch path comprises the extension additionally extended from this second conductor branch path.This second and the 3rd conductor branch path the first this first, this second and the 3rd longest path in conductor branch path.This longest path comprises its shared region of more than 1/3rd of covering；This shared region is shared in this second conductor branch path and the 3rd conductor branch path.

Description

There is antenna structure and the manufacture method thereof of three operational frequency bands

Technical field

The present invention is about a kind of antenna structure, and has multiple operation frequency especially with regard to one The antenna structure of band.

Background technology

In the epoch now that development in science and technology is maked rapid progress, sizes or the light and handy antenna of kenel Develop, to apply at the lightest and the handiest portable electric device of various sizes (such as, Mobile phone or mobile computer) in or radio transmitting device (such as, access point, nothing Gauze card or wireless card bus) in.For example, light structure, transmission usefulness good and Planar inverted F-antenna (the Planar of portable electric device inwall can be arranged on easily Inverted F Antenna, PIFA) or unipole antenna (Monopole Antenna) is Exist, and be widely used in radio transmitting device or the notes of multiple portable electric device In type computer or wireless communication apparatus.In the prior art, mostly by the internal layer of coaxial cable Conductor layer and peripheral conductors layer are respectively welded the signal feed point in PIFA and signal ground point, To export the signal to be transmitted via PIFA.Can apply in the prior art in multifrequency system A PIFA antenna on system has that structure is complicated, be difficult to the character that adjusts each frequency band.

Taiwan I351, No. 787 a kind of prior art of issued patents record, it discloses one Three-frequency antenna.Taiwan I333, No. 715 a kind of prior art of issued patents record, it is taken off Dew a kind of miniaturization three frequency rhombus co-planar waveguide formula antenna.The U.S. the 7,256,743rd B2 bulletin Patent notes one prior art, it discloses a kind of internal multiband antenna.The U.S. 7,242,352 B2 issued patents record a kind of prior art, its disclose a kind of many bands or Broad-band antenna.

Summary of the invention

One purpose of the present invention be to provide a kind of antenna structure with three operational frequency bands and The method manufacturing an antenna structure with three operational frequency bands.

One embodiment of the invention is to provide a kind of antenna structure with three operational frequency bands.Should Antenna structure comprises a Department of Radiation.This Department of Radiation comprise feed terminal, one first conductor branch path, One second conductor branch path and one the 3rd conductor branch path.This second conductor branch path electricity It is connected to this first conductor branch path；3rd conductor branch path comprises from this second conductor The extension that individual path additionally extends.This is second and its of the 3rd conductor branch path years old One be this first, this second and the 3rd longest path in conductor branch path.This is the longest Path comprises its shared region of more than 1/3rd of covering；This second conductor branch path and This shared region is shared in 3rd conductor branch path；This first, this second and the 3rd conductor divide Branch path is positioned at the same side of this feed terminal and is respectively provided with three prime directions, and this three starting side In to, the first angle between any two directions is less than 90 degree；This first, this second and the 3rd leads Body individual path all directly extends from this feed terminal；This second conductor branch path and the 3rd conductor The shared conductor branch path with this shared region is comprised between individual path；This shared conductor divides Branch path also comprise the first angle position, between this feed terminal and this first angle position first Subpath and the second subpath between this first angle position and this node, and by this One subpath and this first angle position extend directly into this node from this feed terminal；This second conductor Individual path comprises this shared conductor branch path and the second extension, this second extension subpackage Containing the second angle position, and extend to first terminal position by this second angle position from this node； This first terminal position is arranged between this second angle position and this first subpath；3rd leads Body individual path also comprises this shared conductor branch path；And this first extension comprises the 3rd Angle position, and extend to the second terminal location by this method of three turning angles position from this node.

The still another embodiment of the present invention is to provide a kind of antenna knot with three operational frequency bands Structure.This antenna structure comprises a Department of Radiation.This Department of Radiation comprises a feed terminal and from this feed terminal The three conductor branch paths directly extended.This three conductor branch path is positioned at the same of this feed terminal Side and be respectively provided with three prime directions, and in this three prime direction between any two directions one Angle be less than 90 degree, wherein: this three conductor branch path be the first conductor branch path, second Conductor branch path and the 3rd conductor branch path, and the most directly extend from this feed terminal；This is years old Two and the 3rd conductor branch path this three conductor branch path of the first in longest path； Shared conductor branch road is comprised between this second conductor branch path and the 3rd conductor branch path Footpath；This shared conductor branch path comprises the first angle position, this feed terminal and this first turn The first subpath between Angle Position and between this first angle position and this node second Subpath, and directly extended from this feed terminal by this first subpath and this first angle position To this node；This second conductor branch path also comprises this shared conductor branch path and first and prolongs Extending portion is divided, and this first extension comprises the second angle position, and by this second angle position First terminal position is extended to from this node；This first terminal position is arranged at this second corner position Put between this first subpath；And the 3rd conductor branch path also comprise this shared conductor Individual path and the second extension, this second extension comprises method of three turning angles position, and logical Cross this method of three turning angles position and extend to the second terminal location from this node.

Accompanying drawing explanation

The application detailed description by drawings below so that gain more insight into:

Figure 1A, Figure 1B and Fig. 1 C: be respectively an antenna structure in an embodiment of the present invention Face, isogonism and local front elevational schematic；And

Fig. 2: for the voltage standing wave ratio of antenna structure in Figure 1A, Figure 1B and Fig. 1 C (VSWR) test result figure.

Detailed description of the invention

Referring to Figure 1A, Figure 1B and Fig. 1 C, it is respectively the most in an embodiment of the present invention one The facing of antenna structure 20, isogonism and local front elevational schematic.Antenna structure 20 has three behaviour Make frequency band FB1, FB2, FB3, and comprise a Department of Radiation 30.In one embodiment, radiation Portion 30 comprise a feed terminal 35 and the three conductor branch paths 31 directly extended from feed terminal 35, 32、33.Three conductor branch paths 31,32,33 are positioned at the same side and the difference of feed terminal 35 There is three prime directions 31D, 32D, 33D, and at three prime directions 31D, 32D, 33D In angle DR1 between any two directions less than 90 degree.

In one embodiment, conductor branch path 31 extends directly into a terminal from feed terminal 35 Position TP1, and comprise length LT1, prolong to the one of terminal location TP1 from feed terminal 35 Stretch direction 31A, an edge EA1 and the edge EA2 on EA1 opposite, edge.Conductor Individual path 32 is electrically connected to conductor branch path 31 and comprises length LT2.Conductor branch Path 33 comprises length LT3.In one embodiment, its of conductor branch path 32,33 One is a longest path (the such as conductor branch path in conductor branch path 31,32,33 33).This longest path (such as conductor branch path 33) comprise covering its more than 1/3rd A shared region QC1.This shared region QC1 is shared in conductor branch path 32,33.

In one embodiment, comprise between conductor branch path 32,33 there is shared region QC1 Conductor branch path 34 is shared with the one of length LT4.Such as, length LT4 is more than length / 3rd of LT3.In one embodiment, shared region QC1 covers the two of this longest path More than/mono-, and bearing of trend 31A is close with prime direction 31D or aligns；Such as, long Degree LT4 is more than 1/2nd of length LT3.

In one embodiment, share conductor branch path 34 and extend directly into one from feed terminal 35 Node ND1, and also comprise one and initiate extension 341, angle position CP1, from feed terminal 35 arrive a bearing of trend 34A of angle position CP1, at initial extension 341 and angle position A subpath 342 between CP1 and the son between angle position CP1 and node ND1 Path 343.Initial extension 341 comprise relative to feed terminal 35 a side 3411 and One side 3412 on side 3411 opposite, wherein side 3411 is coupled in conductor branch path 31, And side 3412 comprises a short-circuit end SC1.

In one embodiment, bearing of trend 34A and prime direction 32D, 33D each close Or alignment.Subpath 342 comprises an edge EB1 and the edge on EB1 opposite, edge EB2.Subpath 343 comprises an edge EC1 and the edge EC2 on EC1 opposite, edge. Such as, an acute angle is comprised between bearing of trend 31A, 34A；And specific region QC1 extends from Short-circuit end SC1, feed terminal 35 and conductor branch path 31.

In one embodiment, conductor branch path 32 also comprises shared conductor branch path 34 He An extension 321 of a terminal location TP2 is extended to from node ND1.Extension 321 Comprise an angle position CP2, between angle position CP2 and terminal location TP2 one son Path 3211.Subpath 3211 comprises an edge ED1 and the one side on ED1 opposite, edge Edge ED2.Such as, a right angle is made or close to a right angle at angle position CP2 in extension 321 Turning.Conductor branch path 33 also comprises shared conductor branch path 34 and from node ND1 Extend to an extension 331 of a terminal location TP3.Extension 331 comprises a corner Position CP3, a subpath 3311 between angle position CP3 and terminal location TP3. Subpath 3311 comprises an edge EE1 and the edge EE2 on EE1 opposite, edge.Example As, a right angle or the turning close to a right angle are made at angle position CP3 in extension 331.

In one embodiment, antenna structure 20 also comprises substrate 21, grounding parts 22, Short-circuit conductor portion 23, one gap structure 24, gap structure 25 and a feeding connecting portion 26. Substrate 21 comprises a surface 211, and wherein surface 211 comprises an edge EF1 and edge EF1 An adjacent lateral section 2111 and the body part partially around lateral section 2111 2112, and Department of Radiation 30 is arranged on lateral section 2111.Such as, substrate 21 is a dielectric Matter substrate.Feeding connecting portion 26 is electrically connected between feed terminal 35 and a module end, and has One specified impedance.Such as, this module end is an antenna port, and this specified impedance is equal to 50 Ω Or 75 Ω.Such as, feeding connecting portion 26 is a cable.

In one embodiment, grounding parts 22 is arranged on this body part 2112, and comprise with An angle position CP4 adjacent for edge EF1 of the substrate 21 and edge EF1 of substrate 21 An adjacent angle position CP5, with distance DT11 and angle position CP4 apart one short Terminal SC2, between angle position CP4 and short-circuit end SC2 partially around Department of Radiation 30 An edge EG1 and between angle position CP5 and short-circuit end SC2 partially around spoke Penetrate an edge EG2 in portion 30.

In one embodiment, short-circuit conductor portion 23 on lateral section 2111 from short-circuit end SC2 Extend to short-circuit end SC1, and comprise an angle position CP6, in short-circuit end SC2 and corner position Put the body 231 between CP6, between angle position CP6 and short-circuit end SC1 one Extension 232, from a bearing of trend 23A of angle position CP6 to short-circuit end SC1.Body 231 comprise an edge EH1, an edge EH2 on EH1 opposite, edge and have a longitudinal axis One longitudinal axis AX1 of direction AX1A, and longitudinal axis AX1 is by short-circuit end SC2.Extension 232 Comprise an edge EK1 and the edge EK2 on EK1 opposite, edge.Such as, extension side It is an oblique 23B to 23A；Short-circuit conductor portion 23 makees turning of an obtuse angle at angle position CP6 Curved；Longitudinal axis AX1 is parallel with edge EA2 or close to parallel；And longitudinal axis AX1 and edge EB2 Vertical or near vertical.Such as, longitudinal axis AX1 is parallel with edge EC1 or close to parallel；And An obtuse angle is comprised between edge EB1, EC1.

In one embodiment, gap structure 24 is arranged at the edge EG1 of grounding parts 22, short circuit Between conductor portion 23 and shared conductor branch path 34.Gap structure 25 is arranged at short circuit and leads Between body 23, Department of Radiation 30 and the edge EG2 of grounding parts 22.In one embodiment, Gap structure 24 is arranged at the edge EG1 of grounding parts 22, short-circuit conductor portion 23 and subpath Between 342.In one embodiment, Department of Radiation 30, grounding parts 22 and short-circuit conductor portion 23 are Coplanar.The edge EG2 of grounding parts 22 comprises as a sub-edge of stratum bottom EG21, as a sub-edge EG22 of intermediate strata, at angle position CP5 and sub-edge A sub-edge EG23 between EG21, between sub-edge EG21 and sub-edge EG22 One sub-edge EG24 and the sub-edge between short-circuit end SC2 and sub-edge EG22 EG25。

In one embodiment, gap structure 25 comprises four spaces 251,252,253,254. Space 251 is arranged at short-circuit conductor portion 23, conductor branch path 31, sub-edge EG21, son Between edge EG24, sub-edge EG22 and sub-edge EG25；Space 252 is arranged at conductor Between individual path 31 and conductor branch path 32；Space 253 is arranged at subpath 3311 And between sub-edge EG23；Space 254 is arranged at extension 331 and sub-edge EG21 Between.

In one embodiment, between the edge EH1 and the edge EF1 of substrate 21 of body 231 Comprise distance DT12.One is comprised between the edge EH2 and sub-edge EG22 of body 231 Distance DT13.Distance DT14 is comprised between feed terminal 35 and sub-edge EG24.Conductor Distance DT15 is comprised between the edge EA2 and sub-edge EG21 of individual path 31.Terminal Distance DT16 is comprised between the edge EE1 of position TP1 and subpath 3311.Conductor divides A distance is comprised between the edge EA1 and the edge ED2 of subpath 3211 of branch path 31 DT17.Comprise between the edge ED1 and the edge EC2 of subpath 343 of subpath 3211 One distance DT18.Comprise between the edge EB2 of terminal location TP2 and subpath 342 one away from From DT19.A distance is comprised between the edge EE2 and sub-edge EG23 of subpath 3311 DT20.A distance is comprised between the edge EA2 in terminal location TP3 and conductor branch path 31 DT21.Distance DT22 is comprised between feed terminal 35 and longitudinal axis AX1.Such as, distance DT12, DT13、DT14、DT15、DT16、DT17、DT18、DT19、DT20、DT21、 DT22 is multiple vertical dimension respectively.

In one embodiment, one jiao is comprised between y direction AX1A and bearing of trend 34A Degree AG1.Angle A G2 is comprised between y direction AX1A and bearing of trend 23A.Example As, angle A G1, AG2 are respectively two acute angles.This antenna structure 20 utilizes conductor branch road Footpath 31,32,33 forms operational frequency bands FB1, FB2, FB3 respectively.Distance DT16 is It is changeable that to make operational frequency bands FB1 be moveable.Distance DT19 is changeable making Operational frequency bands FB2 is moveable.Distance DT21 is changeable to make operational frequency bands FB3 It is moveable.Such as, distance DT21 is varied to make operational frequency bands FB3 special from one first Determine frequency band and move to one second special frequency band.Such as, distance DT19 is varied to make operation frequency Band FB2 moves to one the 4th special frequency band from one the 3rd special frequency band.Such as, distance DT16 It is varied to make operational frequency bands FB1 move to one the 6th special frequency band from one the 5th special frequency band.

In one embodiment, antenna structure 20 comprises a conductor structure 28, and conductor structure 28 Comprise Department of Radiation 30 and short-circuit conductor portion 23.Distance DT12, DT13, DT14, DT15, DT17, DT18, DT20, DT22 and angle A G1, angle A G2 at least within it One is changeable to make antenna structure 20 have a desired impedance matching.Such as, wire knot Structure 28 comprises an impedance R1；Distance DT12, DT13, DT14, DT15, DT17, DT18, DT20, DT22 and angle A G1, angle A G2 at least one be varied to change Impedance R1, so that antenna structure 20 has this desired impedance matching.Such as, this is desired Impedance matching is relevant to this specified impedance of impedance R1 and feeding connecting portion 26.

In one embodiment, angle A G3 is comprised between y direction AX1A and edge EB1 (indicating through translation)；Angle A G4 is comprised between y direction AX1A and edge EK1 (indicating through translation)；Angle A G5 is comprised between y direction AX1A and edge EK2. Distance DT11, DT12, DT13, DT14, DT15, DT17, DT18, DT20, DT22, With angle A G1, AG2, AG3, AG4, AG5 at least one be changeable come Antenna structure 20 is made to have a desired impedance matching.Such as, distance DT11, DT12, DT13, DT14, DT15, DT17, DT18, DT20, DT22 and angle A G1, At least one of AG2, AG3, AG4, AG5 is varied to change impedance R1, with Antenna structure 20 is made to have this desired impedance matching.

In the embodiment provided according to Figure 1A, Figure 1B and Fig. 1 C, one has three Operational frequency bands FB1, the antenna structure 20 of FB2, FB3 comprise a Department of Radiation 30, wherein this spoke Penetrate portion 30 and comprise conductor branch path 31,32,33.Conductor branch path 32 is electrically connected to lead Body individual path 31；Conductor branch path 33 comprises and additionally extends from conductor individual path 32 One extension 331.The first conductor branch path 31 in conductor branch path 32,33,32, A longest path (such as conductor branch path 33) in 33.This longest path (such as conductor Individual path 33) comprise its shared region QC1 of more than 1/3rd of covering；Conductor branch This shared region QC1 is shared in path 32,33.

In the embodiment provided according to Figure 1A, Figure 1B and Fig. 1 C, a kind of manufacture has The method having an antenna structure 20 of three operational frequency bands FB1, FB2, FB3 comprises the steps of One substrate 21 is provided；Form a grounding parts 22 on the base plate (21 and there are three conductor branch roads One Department of Radiation 30 in footpath 31,32,33, wherein this three conductor branch path 31,32,33 it The part (such as initiateing extension 341 and subpath 342) of one has a bearing of trend 34A； One short-circuit conductor portion 23, wherein short-circuit conductor portion is set between grounding parts 22 and Department of Radiation 30 23 comprise and have a body 231 of a longitudinal axis AX1 and from body 231 toward an oblique 23B The extension 232 extended, and oblique 23B and bearing of trend 34A be positioned at longitudinal axis AX1 not Homonymy；And determine that oblique 23B and this bearing of trend 34A at least one of both are relative to the longitudinal axis The relation of AX1, and make antenna structure 20 have a desired impedance matching.

In one embodiment, Department of Radiation 30 also comprises feed terminal 35 and centre of form HC1.Lead Body individual path 31 extends directly into a terminal location TP1 from feed terminal 35, and comprises relatively An outer ledge (such as edge EA2) in centre of form HC1.Conductor branch path 32 and leading Comprise between body individual path 33 and share conductor branch path 34.Share conductor branch path 34 extend directly into a node ND1 from feed terminal 35, and also comprise one initiate extension 341, One angle position CP1 and the Yi Zilu between initial extension 341 and angle position CP1 Footpath 342.Subpath 342 comprises one first (the such as limit, inside edge relative to centre of form HC1 Edge EB2).

In one embodiment, conductor branch path 32 comprise shared conductor branch path 34 and from Node ND1 extends to extension 321, wherein an extension of a terminal location TP2 321 comprise an angle position CP2.Conductor branch path 33 comprises shared conductor branch path 34 and extend to the extension 331 of a terminal location TP3 from node ND1.Extension Points 331 comprise an angle position CP3 and angle position CP3 and terminal location TP3 it Between a subpath 3311, wherein subpath 3311 comprises one second relative to centre of form HC1 Inside edge (such as edge EE1).Terminal location TP1 and this second inside edge are (such as Edge EE1) between comprise one first vertical dimension (such as distance DT16).Terminal location One second vertical dimension (ratio is comprised between TP2 and this first inside edge (such as edge EB2) Such as distance DT19).Between terminal location TP3 and this outer ledge (such as edge EA2) Comprise one the 3rd vertical dimension (such as distance DT21).

In one embodiment, the method manufacturing antenna structure 20 also comprises the steps of profit Operational frequency bands FB1, FB2, FB3 is formed respectively with conductor branch path 31,32,33； Via determining that this first vertical dimension (such as distance DT16) determines operational frequency bands FB1； Via determining that this second vertical dimension (such as distance DT19) determines operational frequency bands FB2； And via determining that the 3rd vertical dimension (such as distance DT21) determines operational frequency bands FB3.

In the embodiment provided according to Figure 1A, Figure 1B and Fig. 1 C, antenna structure 20 It is a kind of printing type aerial structure, and is used in a radio transmitting device (not shown). In one embodiment, antenna structure 20 is used on a printed circuit board (PCB), has and is prone to adjust A geometry, and can apply for operational frequency bands LTE-Band 20 (790～870MHz), LTE-Band 3 (1770～1880MHz), LTE-Band 7 (2500～2700MHz) have a specific device (such as one wireless telecommunications of a band system band demand Device) on.Such as, this wireless communication apparatus be a mobile computer, a mobile phone, One access point (AP) or comprise TV or the Video CD (DVD) of Wi-Fi technology Machine etc..Such as, antenna structure 20 can apply to use Long Term Evolution (LTE (Long Term Evolution)) Band 20, Band 3, the system of Band 7.Such as, antenna The frequency band of structure 20 can be slightly re and make antenna structure 20 apply at other operation three frequency The wireless telecommunication system of band.

In one embodiment, antenna structure 20 is prone in different environment for required Frequency band and be adjusted.Such as, the conductive structure of antenna structure 20 (comprises Department of Radiation 30, connects Ground portion 22, short-circuit conductor portion 23) it is printed directly on a substrate 21 (such as one circuit board) On；So, it is possible to reduce the die cost expenditure of stereoscopic antenna and the cost of production and assembly, And apply in the Wi-Fi device of various environment.

In one embodiment, antenna structure 20 is a PIFA antenna structure, and comprises substrate 21, grounding parts 22 and a conductor structure 28.Conductor structure 28 comprises Department of Radiation 30 and short circuit Conductor portion 23.Such as, conductor structure 28 is a microstrip line, is printed on the side of substrate 21 In part 2111, and comprise feed terminal 35 and short-circuit end SC2.Feed terminal 35 is as a signal Feed side, and short-circuit end SC2 is as a signal ground end.Substrate 21 is also included in surface 211 One reverse side on opposite.A first surface part corresponding with lateral section 2111 in this reverse side is not Print a grounding metal plane.A second surface portion not corresponding with conductor structure 28 in this reverse side Divide and can print a grounding metal plane (in the case of three ply board), or can be entirely without metal (in the case of doubling plate).Such as, during antenna structure 20 is built into a radio transmitting device.

In one embodiment, Department of Radiation 30 comprises the conductor branch directly extending from feed terminal 35 Path 31,32,33.Conductor branch path 31,32,33 is respectively provided with for forming resonance Length LT1, LT2, LT3.Conductor branch path 31,32,33 is respectively used to be formed Operational frequency bands FB1 to be designed, FB2, FB3.Operational frequency bands FB1, FB2, FB3 divide Do not comprise one first operation frequency, one second operation frequency and one the 3rd operation frequency.This is first years old Operation frequency, this second operation frequency and the 3rd operation frequency are respectively provided with one first resonance wave Length, one second resonant wavelength and one the 3rd resonant wavelength.This first resonant wavelength 1/4th, / 4th of/4th of this second resonant wavelength and the 3rd resonant wavelength are respectively one the One length, one second length and one the 3rd length.Length LT1, LT2, LT3 difference are the most rough Equal to this first length, this second length and the 3rd length, so, Department of Radiation 30 is that is available In emission band signal.

In one embodiment, short-circuit conductor portion 23 extends from the short-circuit end SC1 of Department of Radiation 30 To short-circuit end SC2.Such as, short-circuit end SC2 and a signal ground of a PIFA antenna structure End correspondence, and be connected with the earthed system of system.Short-circuit conductor portion 23 can adjust antenna simultaneously The impedance matching of structure 20 so that the voltage standing wave ratio (VSWR) of antenna structure 20 is permissible Reach the specification and requirement of industry.In one embodiment, operational frequency bands FB1, FB2, FB3 It is respectively provided with independent Regulation mechanism, so, can facilitate independent and be easily adjusted each behaviour Make the operating point of frequency band, to reach systematic application.

In one embodiment, feeding connecting portion 26 be electrically connected to feed terminal 35 and a module end it Between, and be a cable with 50 Ω impedances.One end of this cable is directly welded at feed terminal 35 to feed an aerial signal, and one end of this cable then can arbitrarily extend.Such as, this module end Comprising a radio frequency feed-in signal end and a radio frequency feed-in signal ground end, this radio frequency FD feed connects Ground end arbitrarily can extend according to product form.In one embodiment, conductor branch path 31 Length LT1 be adjustable so that this first operation frequency of operational frequency bands FB1 is adjustable Whole；The length of subpath 3211 be adjustable so that operational frequency bands FB2 this second behaviour Working frequency is adjustable；The length of subpath 3311 is adjustable so that operational frequency bands FB3 The 3rd operation frequency be adjustable.Such as, short-circuit end SC2 and PIFA antenna knot One signal ground end of structure is corresponding, and is connected with the earthed system of system.Such as, grounding parts 22 An earth terminal as system.Such as, substrate 21 is a dielectric layer of a printed circuit board (PCB).

Referring to Fig. 2, it is the voltage of antenna structure 20 in Figure 1A, Figure 1B and Fig. 1 C The test result figure of standing-wave ratio (VSWR).Fig. 2 show antenna structure 20 VSWR and Relation curve CV1 and CV2 between frequency, be derived from relation curve CV1 frequency band FB3, With frequency band FB2, the FB1 being derived from relation curve CV2.As in figure 2 it is shown, have frequency In the frequency band FB3 of scope 0.775GHz～0.875GHz, VSWR drops to be intended to maximum " 2 " below, and frequency band FB3 instruction 100MHz a frequency range；There is frequency range In the frequency band FB2 of 1.70GHz～1.90GHz, VSWR drops to be intended to maximum " 2 " below, And a frequency range of frequency band FB2 instruction 200MHz；There is frequency range In the frequency band FB1 of 2.40GHz～2.75GHz, VSWR drops to be intended to maximum " 2 " below, And a frequency range of frequency band FB1 instruction 350MHz；Described frequency range is encompassed by LTE frequency band mark The frequency range of the wireless telecommunications under Zhun.

Embodiment

1. an antenna structure 20 with three operational frequency bands FB1, FB2, FB3, comprises One Department of Radiation 30, wherein this Department of Radiation 30 comprises feed terminal 35, a 1 first conductor branch road Conductor branch path, footpath 31,1 second 32 and one the 3rd conductor branch path 33.This second is led Body individual path 32 is electrically connected to this first conductor branch path 31；And the 3rd conductor divide Branch path 33 comprises one first extension additionally extended from this second conductor branch path 32 331.This second and the 3rd conductor branch path 32,33 the first this first, this second With the longest path in the 3rd conductor branch path 31,32,33；This longest path comprises Cover its shared region QC1 of more than 1/3rd；This second conductor branch path 32 He This shared region QC1 is shared in 3rd conductor branch path 33；This first, this second and should 3rd conductor branch path 31,32,33 is positioned at the same side of this feed terminal 35 and is respectively provided with Three prime directions 31D, 32D, 33D, and in this three prime directions 31D, 32D, 33D One first angle DR1 between any two directions is less than 90 degree；This first, this second and should 3rd conductor branch path 31,32,33 all directly extends from this feed terminal 35；This second is led Comprise between body individual path 32 and the 3rd conductor branch path 33 and there is this shared region The one of QC1 shares conductor branch path 34；This shared conductor branch path 34 also comprises one One angle position CP1, between this feed terminal 35 and this first angle position CP1 one One subpath 342 and between this first angle position CP1 and a node ND1 one second Subpath 343, and by this first subpath 342 and this first angle position CP1 from this feedback Sending end 35 extends directly into this node ND1；This second conductor branch path 32 comprises this and shares Conductor branch path 34 and one second extension 321, this second extension 321 comprises one Second angle position CP2, and extended from this node ND1 by this second angle position CP2 To a first terminal position TP2；This first terminal position TP2 is arranged at this second angle position Between CP2 and this first subpath 342；3rd conductor branch path 33 also comprises this altogether Enjoy conductor branch path 34；And this first extension 331 comprises a method of three turning angles position CP3, and extend to one second terminal position by this method of three turning angles position CP3 from this node ND1 Put TP3.

2. according to the antenna structure described in embodiment 1, wherein: this first conductor branch path 31 extend directly into a third terminal position TP1 from this feed terminal 35, and also comprise one first Edge EA1 and one of this EA1 opposite, the first edge in this first conductor branch path 31 Second edge EA2；This shared conductor branch path 34 also comprise one initiate extension 341 and From this feed terminal 35 to the one first bearing of trend 34A of this first angle position CP1, wherein This first subpath 342 be positioned at this initial extension 341 and this first angle position CP1 it Between；This initial extension 341 comprise the first side 3411 relative to this feed terminal 35, With the second side 3412 on this opposite, first side 3411, this first side 3411 couples In this first conductor branch path 31, and this second side 3412 comprises one first short-circuit end SC1；This first subpath 342 comprises one first edge EB1 and at this first subpath 342 The one second edge EB2 on this EB1 opposite, the first edge；This second subpath 343 comprises one First edge EC1 and on the one of this EC1 opposite, the first edge of this second subpath 343 Two edge EC2；This second extension 321 is also included in this second angle position CP2 and is somebody's turn to do One the 3rd subpath 3211 between the TP2 of first terminal position；3rd subpath 3211 wraps Containing one first edge ED1 and on this ED1 opposite, the first edge of the 3rd subpath 3211 One second edge ED2；This first extension 331 is also included in this method of three turning angles position One the 4th subpath 3311 between CP3 and this second terminal location TP3；And the 4th Subpath 3311 comprise one first edge EE1 and the 4th subpath 3311 this first The one second edge EE2 on EE1 opposite, edge.

3. also comprise substrate 21, ground connection according to the antenna structure described in embodiment 1 to 2 Short-circuit conductor portion of portion 22, one 23, one feeds connecting portion 26,1 first gap structure 24 and Second gap structure 25.This substrate 21 comprises a first surface 211, wherein this first surface 211 comprise the side that one first edge EF1 is adjacent with this first edge EF1 of this substrate 21 Rim portion 2111 and the body part 2112 partially around this lateral section 2111, and This Department of Radiation 30 is arranged on this lateral section 2111.This grounding parts 22 is arranged at this body Divide on 2112, and comprise one fourth corner adjacent with this first edge EF1 of this substrate 21 One the 5th angle position that position CP4 is adjacent with this first edge EF1 of this substrate 21 CP5, with one first distance DT11 and the 4th angle position CP4 one second short circuit apart Hold SC2, partly enclose between the 4th angle position CP4 and this second short-circuit end SC2 Around this Department of Radiation 30 one first edge EG1 and the 5th angle position CP5 and this Partially around one second edge EG2 of this Department of Radiation 30 between two short-circuit end SC2.This is short Road conductor portion 23 on this lateral section 2111 from this second short-circuit end SC2 extend to this first Short-circuit end SC1, and comprise one the 6th angle position CP6, this second short-circuit end SC2 and should A body 231 between 6th angle position CP6, from the 6th angle position CP6 to this The one second bearing of trend 23A of one short-circuit end SC1, wherein this body 231 comprises one first limit Edge EH1, one second edge EH2 on this EH1 opposite, the first edge of this body 231, And there is the longitudinal axis AX1 of a y direction AX1A, and this longitudinal axis AX1 by this second Short-circuit end SC2.This feeding connecting portion 26 is electrically connected to this feed terminal 35.This first space is tied Structure 24 is arranged at this first edge EG1 of this grounding parts 22, this short-circuit conductor portion 23 and is somebody's turn to do Share between conductor branch path 34.This Second gap structure 25 is arranged at this short-circuit conductor portion 23, between this second edge EG2 of this Department of Radiation 30 and this grounding parts 22.

4. according to the antenna structure described in embodiment 1 to 3, wherein: this Department of Radiation 30, should Grounding parts 22 and this short-circuit conductor portion 23 are coplanar；This second edge of this grounding parts 22 EG2 comprises as one first sub-edge EG21 of stratum bottom, as intermediate strata One second sub-edge EG22, at the 5th angle position CP5 and this first sub-edge EG21 Between one the 3rd sub-edge EG23, at this first sub-edge EG21 and this second sub-edge One the 4th sub-edge EG24 between EG22 and this second short-circuit end SC2 and this second One the 5th sub-edge EG25 between sub-edge EG22；This Second gap structure 25 comprises one First space 251, Second gap 252, the 3rd space 253 and one the 4th space 254； This first space 251 is arranged at this short-circuit conductor portion 23, this first conductor branch path 31, is somebody's turn to do First sub-edge EG21, the 4th sub-edge EG24, this second sub-edge EG22 and this Between five sub-edge EG25；This Second gap 252 is arranged at this first conductor branch path 31 And between this second conductor branch path 32；3rd space 253 is arranged at the 4th subpath 3311 and the 3rd between sub-edge EG23；4th space 254 is arranged at this second extension Between part 331 and this first sub-edge EG21；This first edge EH1 of this body 231 And comprise a second distance DT12 between this first edge EF1 of this substrate 21；This body One the 3rd distance is comprised between this second edge EH2 and this second sub-edge EG22 of 231 DT13；One the 4th distance DT14 is comprised between this feed terminal 35 and the 4th sub-edge EG24； This second edge EA2 in this first conductor branch path 31 and this first sub-edge EG21 it Between comprise one the 5th distance DT15；This third terminal position TP1 and the 4th subpath 3311 This first edge EE1 between comprise one the 6th distance DT16；This first conductor branch path Wrap between this first edge EA1 and this second edge ED2 of the 3rd subpath 3211 of 31 Containing one the 7th distance DT17；This first edge ED1 of the 3rd subpath 3211 and this second One the 8th distance DT18 is comprised between this second edge EC2 of subpath 343；This first end One the 9th is comprised between this second edge EB2 of end position TP2 and this first subpath 342 Distance DT19；This second edge EE2 of the 4th subpath 3311 and the 3rd sub-edge The tenth distance DT20 is comprised between EG23；This second terminal location TP3 and this first conductor The 11st distance DT21 is comprised between this second edge EA2 of individual path 31；This feeding The 12nd distance DT22 is comprised between end 35 and this longitudinal axis AX1；This y direction AX1A And comprise one second angle A G1 between this first bearing of trend 34A；This y direction AX1A And comprise third angle AG2 between this second bearing of trend 23A；This three operational frequency bands FB1, FB2, FB3 are one first operational frequency bands FB1, one second operational frequency bands FB2 and 1 respectively Three operational frequency bands FB3；This antenna structure 20 utilize this first, this second and the 3rd conductor divide Branch path 31,32,33 formed respectively this first, this second and the 3rd operational frequency bands FB1, FB2、FB3；6th distance DT16 is changeable to make this first operational frequency bands FB1 It is moveable；9th distance DT19 is changeable to make this second operational frequency bands FB2 It is moveable；11st distance DT21 is changeable to make the 3rd operational frequency bands FB3 It is moveable；And this second distance DT12, the 3rd distance DT13, the 4th distance DT14, the 5th distance DT15, the 7th distance DT17, the 8th distance DT18, should Tenth distance DT20, the 12nd distance DT22, this second angle A G1 and this third angle At least one of degree AG2 is that changeable to make this antenna structure 20 have one desired Impedance matching.

5. manufacture has the method for an antenna structure for three operational frequency bands, and the method comprises The following step a: substrate is provided；Form a grounding parts on the substrate and there are three conductors divide One Department of Radiation of branch path, wherein the part in one of this three conductor branch path has an extension Direction；Arranging a short-circuit conductor portion between this grounding parts and this Department of Radiation, wherein this short circuit is led Body comprise have a longitudinal axis a body and from this body toward one first extend obliquely out one prolong Extending portion, and this first oblique not homonymy being positioned at this longitudinal axis with this bearing of trend；And determine to be somebody's turn to do First oblique with this bearing of trend at least one of both relative to the relation of this longitudinal axis, and make this sky Line structure has a desired impedance matching.

6. according to the method described in embodiment 5, wherein: this Department of Radiation also comprises a feed terminal With a centre of form；This three conductor branch path is one first conductor branch path respectively, one second leads Body individual path and this one the 3rd conductor branch path；This first conductor branch path is from this feeding End extends directly into a first terminal position, and comprises the outer ledge relative to this centre of form； Comprise between this second conductor branch path and the 3rd conductor branch path and share conductor branch Path；This shared conductor branch path extends directly into a node from this feed terminal, and also comprises One initiates extension, one first angle position and in this initial extension and this first corner position One first subpath between putting；In this first subpath comprises relative to the one first of this centre of form Lateral edges；This second conductor branch path comprises this shared conductor branch path and prolongs from this node Reach one first extension of one second terminal location；This first extension comprises one second Angle position；3rd conductor branch path comprises this shared conductor branch path and from this node Extend to one second extension of a third terminal position；This second extension comprises one Method of three turning angles position and one second son between this method of three turning angles position and this third terminal position Path；This second subpath comprises one second inside edge relative to this centre of form；This first end One first vertical dimension is comprised between end position and this second inside edge；This second terminal location And between this first inside edge, comprise one second vertical dimension；This third terminal position is outer with this One the 3rd vertical dimension is comprised between lateral edges；And this three operational frequency bands is one first behaviour respectively Make frequency band, one second operational frequency bands and one the 3rd operational frequency bands.

7. according to the method described in embodiment 5 to 6, also comprise the steps of utilize this One, this second and the 3rd conductor branch path formed respectively this first, this second and this Three operational frequency bands；Via determining that this first vertical dimension determines this first operational frequency bands；Via Determine that this second vertical dimension determines this second operational frequency bands；And via determining that the 3rd hangs down Straight distance and determine the 3rd operational frequency bands.

8. an antenna structure 20 with three operational frequency bands FB1, FB2, FB3, comprises One Department of Radiation 30.This Department of Radiation 30 comprises a feed terminal 35 and directly prolongs from this feed terminal 35 The three conductor branch paths 31,32,33 stretched, 31,32,33, this three conductor branch path In the same side of this feed terminal 35 and be respectively provided with three prime directions 31D, 32D, 33D, and One first angle DR1 between any two directions in this three prime directions 31D, 32D, 33D Less than 90 degree, wherein: this three conductor branch path 31,32,33 is one first conductor branch Conductor branch path, path 31,1 second 32 and one the 3rd conductor branch path 33, and the most straight Connect and extend from this feed terminal 35；This is second and the one in the 3rd conductor branch path 32,33 years old It it is the longest path in this three conductor branch path 31,32,33；This second conductor branch road Comprise between footpath 32 and the 3rd conductor branch path 33 and share conductor branch path 34；Should Share conductor branch path 34 comprise one first angle position CP1, this feed terminal 35 and should One first subpath 342 between first angle position CP1 and at this first angle position One second subpath 343 between CP1 and a node ND1, and by this first subpath 342 This node ND1 is extended directly into from this feed terminal 35 with this first angle position CP1；This is years old Two conductor branch paths 32 also comprise this shared conductor branch path 34 and one first extension 321, this first extension 321 comprises one second angle position CP2, and by this second Angle position CP2 extends to a first terminal position TP2 from this node ND1；This first end End position TP2 is arranged between this second angle position CP2 and this first subpath 342； And the 3rd conductor branch path 33 also comprise this shared conductor branch path 34 and one second Extension 331, this second extension 331 comprises a method of three turning angles position CP3, and logical Cross this method of three turning angles position CP3 and extend to one second terminal location TP3 from this node ND1.

9. according to the antenna structure described in embodiment 8, wherein: this first conductor branch path 31 extend directly into a third terminal position TP1 from this feed terminal 35, and comprise one first limit Edge EA1 and one of this EA1 opposite, the first edge in this first conductor branch path 31 Two edge EA2；This second conductor branch path 32 is electrically connected to this first conductor branch path 31；This longest path comprises its shared region QC1 of more than 1/3rd of covering；This is second years old This shared region QC1 is shared in conductor branch path 32 and the 3rd conductor branch path 33；Should Share conductor branch path 34 and there is this shared region QC1；This shared conductor branch path 34 Also comprise one and initiate extension 341 and from this feed terminal 35 to this first angle position CP1 One first bearing of trend 34A, wherein this first subpath 342 is positioned at this initial extension 341 And between this first angle position CP1；This initial extension 341 comprises relative to this feed terminal One first side 3411 of 35 and in a second side 3412 on this opposite, first side 3411, This first side 3411 is coupled in this first conductor branch path 31, and this second side 3412 Comprise one first short-circuit end SC1；This first subpath 342 comprise one first edge EB1 and The one second edge EB2 on this EB1 opposite, the first edge of this first subpath 342；This is years old Two subpaths 343 comprise one first edge EC1 and this second subpath 343 this first The one second edge EC2 on EC1 opposite, edge；This first extension 321 be also included in this One the 3rd subpath 3211 between two angle position CP2 and this first terminal position TP2； 3rd subpath 3211 comprises one first edge ED1 and at the 3rd subpath 3211 The one second edge ED2 on this ED1 opposite, the first edge；This second extension 331 also comprises One the 4th subpath between this method of three turning angles position CP3 and this second terminal location TP3 3311；And the 4th subpath 3311 comprise one first edge EE1 and on the 4th sub-road The one second edge EE2 on this EE1 opposite, the first edge in footpath 3311.This antenna structure 20 is also Comprise one substrate 21, grounding parts 22, short-circuit conductor portion 23, a feeding connecting portion 26, One first gap structure 24 and a Second gap structure 25.This substrate 21 comprises a first surface 211, wherein this first surface 211 comprise one first edge EF1 and this substrate 21 this One lateral section 2111 adjacent for edge EF1 and partially around this lateral section 2111 A body part 2112, and this Department of Radiation 30 is arranged on this lateral section 2111.This connects Ground portion 22 is arranged on this body part 2112, and comprises this first edge with this substrate 21 This first edge EF1 phase of one the 4th adjacent for EF1 angle position CP4 and this substrate 21 Adjacent one the 5th angle position CP5, with one first distance DT11 and the 4th angle position CP4 One second short-circuit end SC2 apart, at the 4th angle position CP4 and this second short-circuit end Partially around one first edge EG1 of this Department of Radiation 30 and at the 5th turn between SC2 Partially around the one of this Department of Radiation 30 between Angle Position CP5 and this second short-circuit end SC2 Two edge EG2.This short-circuit conductor portion 23 on this lateral section 2111 from this second short-circuit end SC2 extends to this first short-circuit end SC1, and comprise one the 6th angle position CP6, this A body 231 between two short-circuit end SC2 and the 6th angle position CP6, from the 6th turn Angle Position CP6 is to the one second bearing of trend 23A of this first short-circuit end SC1, wherein this body 231 comprise one first edge EH1, on this EH1 opposite, the first edge of this body 231 one Second edge EH2 and there is the longitudinal axis AX1 of a y direction AX1A, and this longitudinal axis AX1 is by this second short-circuit end SC2.This feeding connecting portion 26 is electrically connected to this feed terminal 35. This first gap structure 24 is arranged at this first edge EG1 of this grounding parts 22, this short circuit is led Between body 23 and this shared conductor branch path 34.This Second gap structure 25 is arranged at This second edge EG2 of this short-circuit conductor portion 23, this Department of Radiation 30 and this grounding parts 22 it Between.

10. according to the antenna structure described in embodiment 8 to 9, wherein: this Department of Radiation 30, should Grounding parts 22 and this short-circuit conductor portion 23 are coplanar；This second edge of this grounding parts 22 EG2 comprises as one first sub-edge EG21 of stratum bottom, as intermediate strata One second sub-edge EG22, at the 5th angle position CP5 and this first sub-edge EG21 Between one the 3rd sub-edge EG23, at this first sub-edge EG21 and this second sub-edge One the 4th sub-edge EG24 between EG22 and this second short-circuit end SC2 and this second One the 5th sub-edge EG25 between sub-edge EG22；This Second gap structure 25 comprises one First space 251, Second gap 252, the 3rd space 253 and one the 4th space 254； This first space 251 is arranged at this short-circuit conductor portion 23, this first conductor branch path 31, is somebody's turn to do First sub-edge EG21, the 4th sub-edge EG24, this second sub-edge EG22 and this Between five sub-edge EG25；This Second gap 252 is arranged at this first conductor branch path 31 And between this second conductor branch path 32；3rd space 253 is arranged at the 4th subpath 3311 and the 3rd between sub-edge EG23；4th space 254 is arranged at this second extension Between part 331 and this first sub-edge EG21；This first edge EH1 of this body 231 And comprise a second distance DT12 between this first edge EF1 of this substrate 21；This body One the 3rd distance is comprised between this second edge EH2 and this second sub-edge EG22 of 231 DT13；One the 4th distance DT14 is comprised between this feed terminal 35 and the 4th sub-edge EG24； This second edge EA2 in this first conductor branch path 31 and this first sub-edge EG21 it Between comprise one the 5th distance DT15；This third terminal position TP1 and the 4th subpath 3311 This first edge EE1 between comprise one the 6th distance DT16；This first conductor branch path Wrap between this first edge EA1 and this second edge ED2 of the 3rd subpath 3211 of 31 Containing one the 7th distance DT17；This first edge ED1 of the 3rd subpath 3211 and this second One the 8th distance DT18 is comprised between this second edge EC2 of subpath 343；This first end One the 9th is comprised between this second edge EB2 of end position TP2 and this first subpath 342 Distance DT19；This second edge EE2 of the 4th subpath 3311 and the 3rd sub-edge The tenth distance DT20 is comprised between EG23；This second terminal location TP3 and this first conductor The 11st distance DT21 is comprised between this second edge EA2 of individual path 31；This feeding The 12nd distance DT22 is comprised between end 35 and this longitudinal axis AX1；This y direction AX1A And comprise one second angle A G1 between this first bearing of trend 34A；This y direction AX1A And comprise third angle AG2 between this second bearing of trend 23A；This three operational frequency bands FB1, FB2, FB3 are one first operational frequency bands FB1, one second operational frequency bands FB2 and 1 respectively Three operational frequency bands FB3；This antenna structure 20 utilize this first, this second and the 3rd conductor divide Branch path 31,32,33 formed respectively this first, this second and the 3rd operational frequency bands FB1, FB2、FB3；6th distance DT16 is changeable to make this first operational frequency bands FB1 It is moveable；9th distance DT19 is changeable to make this second operational frequency bands FB2 It is moveable；11st distance DT21 is changeable to make the 3rd operational frequency bands FB3 It is moveable；And this second distance DT12, the 3rd distance DT13, the 4th distance DT14, the 5th distance DT15, the 7th distance DT17, the 8th distance DT18, should Tenth distance DT20, the 12nd distance DT22, this second angle A G1 and this third angle At least one of degree AG2 is that changeable to make this antenna structure 20 have one desired Impedance matching.

As described above is only the preferred embodiment of the application, all those skilled in the art, The equivalence made according to the application spirit is modified or change, all should be covered by with purgation claim In the range of.

Primary clustering symbol description

20: antenna structure

21: substrate

211: surface

2111: lateral section

2112: body part

22: grounding parts

23: short-circuit conductor portion

231: body

232: extension

23A, 31A, 34A: bearing of trend

23B: oblique

24,25: gap structure

251,252,253,254: space

26: feeding connecting portion

28: conductor structure

30: Department of Radiation

31,32,33: conductor branch path

31D, 32D, 33D: prime direction

321,331: extension

3211,3311,342,343: subpath

34: share conductor branch path

341: initial extension

3411,3412: side

35: feed terminal

AG1, AG2, AG3, AG4, AG5: angle

AX1: the longitudinal axis

AX1A: y direction

CP1, CP2, CP3, CP4, CP5, CP6: angle position

DR1: angle

DT11、DT12、DT13、DT14、DT15、DT16、DT17、DT18、DT19、 DT20, DT21, DT22: distance

EA1、EA2、EB1、EB2、EC1、EC2、ED1、ED2、EE1、EE2、 EF1, EG1, EG2, EH1, EH2, EK1, EK2: edge

EG21, EG22, EG23, EG24, EG25: sub-edge

FB1, FB2, FB3: operational frequency bands

HC1: the centre of form

LT1, LT2, LT3, LT4: length

ND1: node

QC1: shared region

R1: impedance

SC1, SC2: short-circuit end

TP1, TP2, TP3: terminal location

Claims (7)

1. having an antenna structure for three operational frequency bands, comprise a Department of Radiation, wherein this Department of Radiation comprises:

Feed terminal；

First conductor branch path；

Second conductor branch path, is electrically connected to this first conductor branch path；And

3rd conductor branch path, comprises the first extension additionally extended from this second conductor branch path, wherein:

This second and the 3rd conductor branch path the first this first, this second and the 3rd longest path in conductor branch path；

This longest path comprises its shared region of more than 1/3rd of covering；

This shared region is shared in this second conductor branch path and the 3rd conductor branch path；

This first, this second and the 3rd conductor branch path be positioned at the same side of this feed terminal and be respectively provided with three prime directions, and in this three prime direction the first angle between any two directions less than 90 degree；

This first, this second and the 3rd conductor branch path all directly extend from this feed terminal；

The shared conductor branch path with this shared region is comprised between this second conductor branch path and the 3rd conductor branch path；

This shared conductor branch path also comprises the first angle position, the first subpath between this feed terminal and this first angle position and the second subpath between this first angle position and node, and extends directly into this node by this first subpath and this first angle position from this feed terminal；

This second conductor branch path comprises this shared conductor branch path and the second extension, and this second extension comprises the second angle position, and extends to first terminal position by this second angle position from this node；

This first terminal position is arranged between this second angle position and this first subpath；

3rd conductor branch path also comprises this shared conductor branch path；And

This first extension comprises method of three turning angles position, and extends to the second terminal location by this method of three turning angles position from this node.

2. antenna structure as claimed in claim 1, wherein:

This first conductor branch path extends directly into third terminal position from this feed terminal, and also comprises the first edge and second edge on this opposite, the first edge in this first conductor branch path；

This shared conductor branch path also comprises initial extension and the first bearing of trend from this feed terminal to this first angle position, and wherein this first subpath is between this initial extension and this first angle position；

This initial extension comprises relative to the first side of this feed terminal with in the second side on this opposite, first side, and this first side is coupled in this first conductor branch path, and this second side comprises the first short-circuit end；

This first subpath comprises the first edge and second edge on this opposite, the first edge at this first subpath；

This second subpath comprises the first edge and second edge on this opposite, the first edge at this second subpath；

This second extension is also included in the 3rd subpath between this second angle position and this first terminal position；

3rd subpath comprises the first edge and second edge on this opposite, the first edge at the 3rd subpath；

This first extension is also included in the 4th subpath between this method of three turning angles position and this second terminal location；And

4th subpath comprises the first edge and second edge on this opposite, the first edge at the 4th subpath.

3. antenna structure as claimed in claim 2, also comprises:

Substrate, comprises first surface, and wherein this first surface comprises the first edge lateral section adjacent with this first edge of this substrate and the body part partially around this lateral section, and this Department of Radiation is arranged on this lateral section；

Grounding parts, be arranged on this body part, and comprise fourth angle position adjacent with this first edge of this substrate, fiveth angle position adjacent with this first edge of this substrate, with the first distance and the 4th angle position the second short-circuit end apart, between the 4th angle position and this second short-circuit end partially around the first edge of this Department of Radiation and between the 5th angle position and this second short-circuit end partially around the second edge of this Department of Radiation；

Short-circuit conductor portion, this lateral section extends to this first short-circuit end from this second short-circuit end, and comprise the 6th angle position, body between this second short-circuit end and the 6th angle position, from the second bearing of trend of the 6th angle position to this first short-circuit end, wherein this body comprise the first edge, at second edge on this opposite, the first edge of this body and have the longitudinal axis of y direction, and this longitudinal axis is by this second short-circuit end；

Feeding connecting portion, is electrically connected to this feed terminal；

First gap structure, is arranged between this first edge of this grounding parts, this short-circuit conductor portion and this shared conductor branch path；And

Second gap structure, is arranged between this second edge of this short-circuit conductor portion, this Department of Radiation and this grounding parts.

4. antenna structure as claimed in claim 3, wherein:

This Department of Radiation, this grounding parts and this short-circuit conductor portion are coplanar；

This second edge of this grounding parts comprises the as bottom stratum first sub-edge, as the second sub-edge of intermediate strata, the 3rd sub-edge, the 4th sub-edge between this first sub-edge and this second sub-edge and the 5th sub-edge between this second short-circuit end and this second sub-edge between the 5th angle position and this first sub-edge；

This Second gap structure comprises the first space, Second gap, the 3rd space and the 4th space；

This first space be arranged at this short-circuit conductor portion, this first conductor branch path, this first sub-edge, the 4th sub-edge, between this second sub-edge and the 5th sub-edge；

This Second gap is arranged between this first conductor branch path and this second conductor branch path；

3rd space is arranged between the 4th subpath and the 3rd sub-edge；

4th space is arranged between this second extension and this first sub-edge；

Second distance is comprised between this first edge and this first edge of this substrate of this body；

The 3rd distance is comprised between this second edge and this second sub-edge of this body；

The 4th distance is comprised between this feed terminal and the 4th sub-edge；

The 5th distance is comprised between this second edge and this first sub-edge in this first conductor branch path；

The 6th distance is comprised between this third terminal position and this first edge of the 4th subpath；

The 7th distance is comprised between this first edge and this second edge of the 3rd subpath in this first conductor branch path；

The 8th distance is comprised between this first edge and this second edge of this second subpath of 3rd subpath；

The 9th distance is comprised between this second edge of this first terminal position and this first subpath；

The tenth distance is comprised between this second edge and the 3rd sub-edge of 4th subpath；

The 11st distance is comprised between this second edge in this second terminal location and this first conductor branch path；

The 12nd distance is comprised between this feed terminal and this longitudinal axis；

The second angle is comprised between this y direction and this first bearing of trend；

Third angle is comprised between this y direction and this second bearing of trend；

This three operational frequency bands is the first operational frequency bands, the second operational frequency bands and the 3rd operational frequency bands respectively；

This antenna structure utilize this first, this second and the 3rd conductor branch path formed respectively this first, this second and the 3rd operational frequency bands；

6th distance is that changeable to make this first operational frequency bands be moveable；

9th distance is that changeable to make this second operational frequency bands be moveable；

11st distance is that changeable to make the 3rd operational frequency bands be moveable；And

This second distance, the 3rd distance, the 4th distance, the 5th distance, the 7th distance, the 8th distance, the tenth distance, the 12nd distance, this second angle and this third angle at least one be changeable to make this antenna structure have desired impedance matching.

5. there is an antenna structure for three operational frequency bands, comprise:

Department of Radiation, comprise feed terminal and the three conductor branch paths directly extended from this feed terminal, this three conductor branch path is positioned at the homonymy of this feed terminal and is respectively provided with three prime directions, and in this three prime direction, the first angle between any two directions is less than 90 degree, wherein:

This three conductor branch path is the first conductor branch path, the second conductor branch path and the 3rd conductor branch path, and the most directly extends from this feed terminal；

This second and the 3rd conductor branch path this three conductor branch path of the first in longest path；

Shared conductor branch path is comprised between this second conductor branch path and the 3rd conductor branch path；

This shared conductor branch path comprises the first angle position, the first subpath between this feed terminal and this first angle position and the second subpath between this first angle position and node, and extends directly into this node by this first subpath and this first angle position from this feed terminal；

This second conductor branch path also comprises this shared conductor branch path and the first extension, and this first extension comprises the second angle position, and extends to first terminal position by this second angle position from this node；

This first terminal position is arranged between this second angle position and this first subpath；And

3rd conductor branch path also comprises this shared conductor branch path and the second extension, and this second extension comprises method of three turning angles position, and extends to the second terminal location by this method of three turning angles position from this node.

6. antenna structure as claimed in claim 5, wherein:

This first conductor branch path extends directly into third terminal position from this feed terminal, and comprises the first edge and second edge on this opposite, the first edge in this first conductor branch path；

This second conductor branch path is electrically connected to this first conductor branch path；

This longest path comprises its shared region of more than 1/3rd of covering；

This shared region is shared in this second conductor branch path and the 3rd conductor branch path；

This shared conductor branch path has this shared region；

This shared conductor branch path also comprises initial extension and the first bearing of trend from this feed terminal to this first angle position, and wherein this first subpath is between this initial extension and this first angle position；

This initial extension comprises relative to the first side of this feed terminal with in the second side on this opposite, first side, and this first side is coupled in this first conductor branch path, and this second side comprises the first short-circuit end；

This first subpath comprises the first edge and second edge on this opposite, the first edge at this first subpath；

This second subpath comprises the first edge and second edge on this opposite, the first edge at this second subpath；

This first extension is also included in the 3rd subpath between this second angle position and this first terminal position；

3rd subpath comprises the first edge and second edge on this opposite, the first edge at the 3rd subpath；

This second extension is also included in the 4th subpath between this method of three turning angles position and this second terminal location；

4th subpath comprises the first edge and second edge on this opposite, the first edge at the 4th subpath；And

This antenna structure also comprises:

Substrate, comprises first surface, and wherein this first surface comprises the first edge lateral section adjacent with this first edge of this substrate and the body part partially around this lateral section, and this Department of Radiation is arranged on this lateral section；

Grounding parts, be arranged on this body part, and comprise fourth angle position adjacent with this first edge of this substrate, fiveth angle position adjacent with this first edge of this substrate, with the first distance and the 4th angle position the second short-circuit end apart, between the 4th angle position and this second short-circuit end partially around the first edge of this Department of Radiation and between the 5th angle position and this second short-circuit end partially around the second edge of this Department of Radiation；

Short-circuit conductor portion, this lateral section extends to this first short-circuit end from this second short-circuit end, and comprise the 6th angle position, body between this second short-circuit end and the 6th angle position, from the second bearing of trend of the 6th angle position to this first short-circuit end, wherein this body comprise the first edge, at second edge on this opposite, the first edge of this body and have the longitudinal axis of y direction, and this longitudinal axis is by this second short-circuit end；

Feeding connecting portion, is electrically connected to this feed terminal；

First gap structure, is arranged between this first edge of this grounding parts, this short-circuit conductor portion and this shared conductor branch path；And

Second gap structure, is arranged between this second edge of this short-circuit conductor portion, this Department of Radiation and this grounding parts.

7. antenna structure as claimed in claim 6, wherein:

This Department of Radiation, this grounding parts and this short-circuit conductor portion are coplanar；

This second edge of this grounding parts comprises the as bottom stratum first sub-edge, as the second sub-edge of intermediate strata, the 3rd sub-edge, the 4th sub-edge between this first sub-edge and this second sub-edge and the 5th sub-edge between this second short-circuit end and this second sub-edge between the 5th angle position and this first sub-edge；

This Second gap structure comprises the first space, Second gap, the 3rd space and the 4th space；

This first space be arranged at this short-circuit conductor portion, this first conductor branch path, this first sub-edge, the 4th sub-edge, between this second sub-edge and the 5th sub-edge；

This Second gap is arranged between this first conductor branch path and this second conductor branch path；

3rd space is arranged between the 4th subpath and the 3rd sub-edge；

4th space is arranged between this second extension and this first sub-edge；

Second distance is comprised between this first edge and this first edge of this substrate of this body；

The 3rd distance is comprised between this second edge and this second sub-edge of this body；

The 4th distance is comprised between this feed terminal and the 4th sub-edge；

The 5th distance is comprised between this second edge and this first sub-edge in this first conductor branch path；

The 6th distance is comprised between this third terminal position and this first edge of the 4th subpath；

The 7th distance is comprised between this first edge and this second edge of the 3rd subpath in this first conductor branch path；

The 8th distance is comprised between this first edge and this second edge of this second subpath of 3rd subpath；

The 9th distance is comprised between this second edge of this first terminal position and this first subpath；

The tenth distance is comprised between this second edge and the 3rd sub-edge of 4th subpath；

The 11st distance is comprised between this second edge in this second terminal location and this first conductor branch path；

The 12nd distance is comprised between this feed terminal and this longitudinal axis；

The second angle is comprised between this y direction and this first bearing of trend；

Third angle is comprised between this y direction and this second bearing of trend；

This three operational frequency bands is the first operational frequency bands, the second operational frequency bands and the 3rd operational frequency bands respectively；

This antenna structure utilize this first, this second and the 3rd conductor branch path formed respectively this first, this second and the 3rd operational frequency bands；

6th distance is that changeable to make this first operational frequency bands be moveable；

9th distance is that changeable to make this second operational frequency bands be moveable；

11st distance is that changeable to make the 3rd operational frequency bands be moveable；And

This second distance, the 3rd distance, the 4th distance, the 5th distance, the 7th distance, the 8th distance, the tenth distance, the 12nd distance, this second angle and this third angle at least one be changeable to make this antenna structure have desired impedance matching.