CN103390796A - Mobile phone terminal antenna - Google Patents

Mobile phone terminal antenna Download PDF

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Publication number
CN103390796A
CN103390796A CN2013103218136A CN201310321813A CN103390796A CN 103390796 A CN103390796 A CN 103390796A CN 2013103218136 A CN2013103218136 A CN 2013103218136A CN 201310321813 A CN201310321813 A CN 201310321813A CN 103390796 A CN103390796 A CN 103390796A
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China
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described
antenna
part
end
mobile phone
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CN2013103218136A
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Chinese (zh)
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CN103390796B (en
Inventor
何其娟
孙劲
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上海安费诺永亿通讯电子有限公司
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Publication of CN103390796A publication Critical patent/CN103390796A/en
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Abstract

The invention provides a mobile phone terminal antenna. The antenna comprises a metal casing, as well as a main antenna and an auxiliary antenna which are connected with the metal casing through insulating medium, wherein the main antenna is used for receiving and emitting wireless signals; the auxiliary antenna, as a diversity antenna, is used for emitting and receiving signals of GPS/WIFI frequency band; the main antenna is arranged at the lower end of the metal casing and comprises a main antenna radiation body, a first feeding part, an inductor and a second circuit part, the first feeding part and the inductor are positioned at an upper end surface of the connecting part of the main antenna radiation body and the metal casing, and the second circuit part is positioned at a lower end surface of the connecting part of the main antenna radiation body and the metal casing; a switch is arranged in the second circuit part and controls the second circuit part to be grounded or not so as to realize different working frequencies. According to the antenna, the metal casing and the antenna part are integrally formed through injection moulding and other processes. Besides, the switch and the inductor are also arranged, the working states of two frequency bands are realized to meet multi-band communication; the antenna design can be conveniently adjusted.

Description

A kind of mobile phone terminal antenna

Technical field

The present invention relates to the Antenna Design technical field, relate in particular to a kind of mobile phone terminal antenna.

 

Background technology

The Miniaturized multiband built-in aerial is the developing direction of hand-held communication terminal antenna always, and existing antenna form comprises multi-frequency monopole sub antenna, monocycle or double loop antenna, inversion folded antenna (IFA), planar inverted folded antenna (PIFA).These antenna type respectively has condition and the performance of its use in different hand-held communication terminal environment, according to different requirements, can select different antenna forms.

Usually mobile terminal device comprises GSM850/900, DCS, PCS, UMTS, and its frequency range is 0.824GHz-0.96GHz, 1.71GHz-2.17GHz.Along with the development of LTE technology, the frequency of 1700MHz, 3.5GHz, 4GHz partly receives much concern.More and more many mobile phones need antenna to meet simultaneously traditional 2G network frequency range and LTE frequency range, and the development of the mobile terminals such as mobile phone is more and more diversified.

Have in prior art and much realize the method for designing of metal as an antenna part.The patent No. is the form that the patent of EP1858112B1 adopts slot antenna, with the part of metallic plate as antenna.The patent No. is the patent of US2012206302A1, adopts loop antenna that handset mode is coupled to antenna, and in disclosed technology, a day wire spoke beam is placed in the above and below of metal shell or left and right side; Wherein disclosed a kind of embodiment is that metal shell one end is low-frequency antenna, and other end high frequency antenna is implemented the double-fed structure, but if this programme is only used a feed, the double-fed structure needs duplexer to realize; Simultaneously, this antenna structure needs Supporting Media, the antenna cover medium, and for convenience of the fluting of feed, low-and high-frequency takies larger space for two antennas independently, also need consider isolating problem simultaneously.

 

Summary of the invention

 

Be that 700MHz-960MHz and frequency range are the problem of 1710MHz-2170MHz for solving metal shell individual antenna wideband covering frequence scope, adapt to better the large-screen handset size as 5 cun mobile phone display screens, be other antenna headspace simultaneously, the invention provides a kind of mobile phone terminal antenna, has the multi-plane shape structure, metal shell and antenna part can be fully-integrated, and technical performance is better, and method is simpler.

The present invention is a kind of mobile phone terminal antenna, is arranged in a mobile phone terminal and is used for transmitting and receiving wireless signal, it is characterized in that, described mobile phone terminal antenna comprises:

Housing, have electric conductivity;

Antenna part, comprise main antenna, and described main antenna comprises main antenna radiation body, and described main antenna radiation body is the lid shape of an end opening, and the openend of described main antenna radiation body is connected with the lower end of described housing by dielectric;

Wherein, described main antenna part also comprises the first feed part, the first circuit part and second circuit part, described the first feed part and described second circuit partly are connected on the upper surface of junction of described main antenna radiation body and described housing, described the first circuit part is connected on the lower surface of junction of described main antenna radiation body and described housing, and described feed part, the first circuit part are connected with second circuit and are all connected described housing and described main antenna radiation body.

In some embodiment, described antenna part also comprises slave antenna, described slave antenna comprises slave antenna radiation body, described slave antenna radiation body is the lid shape of an end opening, the openend of described slave antenna radiation body is connected with the upper end of described housing by dielectric, and described housing, described main antenna radiation body and described slave antenna radiation body have formed the shell of whole mobile phone terminal; Described slave antenna is diversity antenna, and described slave antenna is realized launching with the signal of described main antenna identical function and receiving, and perhaps described slave antenna is realized launching with the signal of described main antenna difference in functionality and receiving as multiplex antenna.

In some embodiment, described slave antenna part also comprises the second feed part, inductive part and grounded part, described inductive part, described grounded part and described the second feed part all are positioned on the upper surface of described housing and described slave antenna radiation body junction, and described inductive part, described grounded part be connected the second feed and partly all connect described housing and described slave antenna radiation body.

In some embodiment, be provided with inductance or inductance capacitance components and parts on described the first circuit part, described inductance or inductance capacitance components and parts connect described main antenna radiation body and described housing.

In some embodiment, the junction of described main antenna and described housing is provided with second circuit part contact, described second circuit part contact connects described housing and described main antenna, described second circuit part contact is positioned at the junction of described main antenna radiation body and described housing and with described feed, partly is positioned on same end face, and described second circuit part contact partly is connected with described second circuit.

In some embodiment, described second circuit partly comprises:

The second importation, an end is connected with described second circuit part contact;

Second switch, an end is connected with the other end of described the second importation, and described second switch ground connection;

The second Data Control line, an end is connected with described second switch, and the other end of described the second Data Control line is connected with a mobile terminal signal, and described mobile terminal signal is controlled the break-make of described second switch.

In some embodiment, described second circuit part also comprises output, and an end of described output is connected with the other end of described second switch, the other end ground connection of described output.

In some embodiment, an end of described second switch directly or indirectly is connected with described the second importation by inductance, the other end of described second switch directly or indirectly by inductance ground connection.

In some embodiment, described the first circuit part comprises:

The first importation, an end connects described housing and described main antenna radiation body by one first circuit part contact;

The multichannel inductance, an end is connected with the other end of the first importation;

The first switch, an end is connected with the other end of described multichannel inductance, and described the first switch ground connection;

The first Data Control line, an end is connected with the other end of described the first switch, and the other end of described the first Data Control line is connected with a mobile terminal signal, and described mobile terminal signal is controlled the break-make of described the first switch.

In some embodiment, an end of described the first switch directly or indirectly is connected with described the first importation by inductance, the other end of described the first switch directly or indirectly by inductance ground connection.

In some embodiment, described main antenna inside is provided with the mobile phone components such as USB, loud speaker.

In some embodiment, described dielectric adopts Shooting Technique to be connected with described antenna part with described housing.

In some embodiment, the material of described housing is metal or alloy.

In some embodiment, the distance between described antenna part and housing is 0.5mm-2mm.

In some embodiment, described dielectric is closed hoop.

The present invention, owing to adopting above technical scheme, makes it compared with prior art:

1) the invention solves the one-body molded design of metal shell and its antenna part, and adopt polyhedral structure outward appearance, have attractive in appearance, practical characteristics.

2) insertion switch of the present invention and device such as inductance, realized two working frequency range of mobile phone terminal antenna meeting GSM850, GSM900, DCS, PCS, UMTS, LTE700, the communication of LTE1500 multiband, and adjusted design antenna more easily.

3) the invention provides the several functions design of slave antenna, facilitate in practical application and optionally realize.

 

Description of drawings

By reference to the accompanying drawings,, by the detailed description of stating hereinafter, can more clearly understand above-mentioned and other feature and advantage of the present invention, wherein:

Fig. 1 is the positive three-dimensional structure schematic diagram of the embodiment of the present invention one;

Fig. 2 is the reverse side three-dimensional structure schematic diagram of the embodiment of the present invention one;

Fig. 3 is the end view of the embodiment of the present invention one;

Fig. 4 is the upward view of the embodiment of the present invention one;

Fig. 5 is the left and right side reduced graph of the embodiment of the present invention one;

Fig. 6 is the top and bottom reduced graph of the embodiment of the present invention one;

Fig. 7 is the explosive view of the embodiment of the present invention one;

Fig. 8 is the layout of the main antenna of the embodiment of the present invention one;

Fig. 9 is the structural representation of the main antenna of the embodiment of the present invention one;

Figure 10 is the schematic cross-section of the main antenna of the embodiment of the present invention one;

Figure 11 is the structural representation of the first circuit part of the embodiment of the present invention one;

Figure 12 is the return loss plot of the main antenna of the embodiment of the present invention one;

Figure 13 is the structural representation of the slave antenna of the embodiment of the present invention one;

Figure 14 is the schematic cross-section of the slave antenna of the embodiment of the present invention one;

Figure 15 is the return loss plot of the slave antenna of the embodiment of the present invention one;

Figure 16 is the structural representation of the main antenna of the embodiment of the present invention two;

Figure 17 is the first circuit part structural representation of the embodiment of the present invention three;

Figure 18 is the structural representation of the main antenna of the embodiment of the present invention four;

Figure 19 is the structural representation of the first circuit part of the embodiment of the present invention four;

Figure 20 is the return loss plot of the embodiment of the present invention three, four main antenna.

 

Embodiment

, referring to the accompanying drawing that the embodiment of the present invention is shown, hereinafter the present invention will be described in more detail.Yet the present invention can be with many multi-form realizations, and should not be construed as the restriction of the embodiment that is subjected in this proposition.On the contrary, it is abundant and complete open in order to reach proposing these embodiment, and makes those skilled in the art understand scope of the present invention fully.In these accompanying drawings, for clarity sake, may amplify size and the relative size in layer and zone.

Embodiment one

With reference to figure 1-12, a kind of mobile phone terminal antenna provided by the invention, be arranged on a mobile phone terminal 10 and carry out transmitting and receiving of wireless signal.This mobile phone terminal antenna comprises housing and antenna part, and antenna part is arranged at by dielectric on the upper end and/or lower end of housing, and wherein antenna part is the lid shape of an end opening, and housing and antenna part have been connected to form the shell of whole mobile phone terminal.

In the present embodiment, housing is the metal shell 12 with electric conductivity, certainly also can adopt the making material of alloy as housing, such as stainless steel, magnadure etc., and the making such as process is milled, forging and stamping obtain the profile as Fig. 3-Fig. 4.Metal shell 12 has polyhedron-shaped, comprising that left and right side, bottom surface and front are removed arranges display screen area, leave the opening that some devices in mobile phone terminal are set on the positive and negative of metal shell 12, for example shown in Fig. 1-2, also leave the position of main screen button 13, loud speaker 14, front-facing camera 15 etc. on the front of metal shell 12 except the position of leaving display screen 11, leave the position of post-positioned pick-up head 18 grades on the reverse side of metal shell 12, certainly the setting position of each parts can be adjusted as the case may be, is not restricted herein.

In the present embodiment, antenna part comprises main antenna 20 and slave antenna 30, main antenna 20 and slave antenna 30 all are the lid-like of an end opening, the opening part of main antenna 20 is connected with the lower end of metal shell 12 by dielectric 17, the opening part of slave antenna 30 is connected with the upper end of metal shell 12 by dielectric 16, main antenna 20 is connected with metal shell 12 and is used for receiving and wireless signal emission, slave antenna 30 is connected with metal shell 12 and is used for auxiliary main antenna reception wireless signal or WIFI/GPS antenna, and is used for this frequency range wireless signal transmission and reception; Dielectric 17 and dielectric 16 are used for cutting apart metal shell 12 and antenna part, and divided distance is that 0.5mm is to the 2mm left and right.Concrete, dielectric 16 and dielectric 17 can be closed ring-type, also can be in the form of sheets or rectangular-shaped etc.; Dielectric 16 and dielectric 17 can be the media such as high molecular polymer, and it adopts the techniques such as injection moulding and antenna part to be connected to form reduced graph as shown in Fig. 5-6.

It is the reduced graph of longitudinal cross-section of the whole shell of the mobile phone terminal that forms of antenna part and metal shell 12 with reference to figure 5, its longitudinal cross-section is octagon, symmetrical respectively up and down, specifically comprise paired limit 101, limit 102, limit 103 and limit 104, limit 102 is longer than on limit 101, and limit 103 is longer than on limit 102.The angle 105 on limit 101 and limit 102, limit 104 is greater than the angle 106 of limit 103 with limit 102, limit 104, and angle 106, greater than 90 degree, is obtuse angle.Intersect too sharp keenly for fear of the polygon adjacent edge, the polygon adjacent edge is all made fillet and is processed, and radius of corner is much smaller than the minor face of polygon.It is the reduced graph of lateral cross section of the whole shell of the mobile phone terminal that forms of antenna part and metal shell 12 with reference to figure 6, its lateral cross section also is for octagon, all symmetrical up and down, specifically comprise paired limit 201, limit 202, limit 203, limit 204, wherein limit 201 is the longest, and the length on limit 203 is more than or equal to the length on limit 202.The angle on limit 201 and limit 202, limit 204 is more than or equal to the angle 205 of limit 203 with limit 202, limit 204, and angle 205 is obtuse angle.Shape polyhedral structure as shown in Fig. 5-6 of being combined into of antenna part and metal shell 12, be in order to make it have effect attractive in appearance, certainly also can be made into other shapes, be not restricted herein in the present embodiment.

When the present embodiment applies in concrete mobile phone terminal, concrete with reference to 7, display screen 11 is set on the upper surface of metal shell 12, can places inner some devices commonly used of the mobile phone terminals such as pcb board 18, battery 19 in the space that metal shell 12, display screen 11 and antenna part form.

In the present embodiment, with reference to figure 8-10, main antenna 20 is arranged at the lower end of metal shell 12, and main antenna 20 comprises main antenna radiation body 22, the first feed part 21, the first circuit part and second circuit part 50.Concrete, main antenna radiation body 22 is the lid shape of an end opening, and the opening part of main antenna radiation body 22 is connected to the lower end of metal shell 12 by dielectric 17; The first feed part 21 is arranged on the upper surface of metal shell 12 and main antenna radiation body 22 junctions, and the first feed part 21 all is connected with metal shell 12 with main antenna radiation body 22, the first feed part 21 reception feed signals; The first circuit part is connected on the lower surface of metal shell 12 and main antenna radiation body 22 junctions.The first circuit part adopts inductance 27 in the present embodiment, inductance 27 is arranged on the lower surface of metal shell 12 and main antenna radiation body 22 junctions, and inductance 27 connects main antenna radiation body 22 and metal shell 12, and inductance 27 is used for the frequency of regulating whole mobile phone terminal antenna.Certainly inductance 27 device or the circuit that can be had an equivalent identical function replaces, and, as the folding line of the microstrip design of controllable impedance, antenna tuner, equivalent inductance, plane inductive coil, helix etc., do not limit herein.

In the present embodiment, main antenna 20 also comprises second circuit part 50, as shown in figure 11.Main antenna radiation body 22 is provided with second circuit part contact 26 with the junction of metal shell 12, and second circuit part contact 26 is connected with main antenna radiation body 22 with metal shell 12; In addition, second circuit part contact 26 is positioned at the junction of main antenna radiation body 22 and metal shell 12 and with the first feed part 21, is positioned on the same side, and inductance 27 is positioned on the heteropleural of second circuit part contact 26 and feed part 21 centres, as shown in Figure 9.

In the present embodiment, second circuit part 50 is positioned on the pcb board 18 of mobile phone terminal 10, has the function of the radio-frequency (RF) signal switch of realizing.Concrete, the second switch 51 that second circuit part 50 comprises, the second importation 52, output 53 and the second Data Control line 54, the second importation 52 1 ends are connected with second circuit part contact 26, and the other end is connected with second switch 51.Output 52 1 ends are connected with second switch 51, and the other end connects ground, and ground refers to the reference point of signal, in the present embodiment as pcb board 18 or metal shell 12; In the present embodiment, can seal in simultaneously the components and parts such as inductance or electric capacity on the second importation 52 and output 53, further Optimization Work frequency and bandwidth.Certainly, second circuit part 50 also can not arrange separately output 52, can be directly connected in the inside of second switch 51 ground, as be directly connected on pcb board, is not restricted herein.The second Data Control line 54 1 ends are connected with second switch 51, and the other end is connected with the mobile terminal signal on mobile phone terminal, and this mobile terminal signal is controlled conducting and the disconnection of second switch 51, thereby control whether ground connection of second circuit part contact 26.

In the present embodiment, the conducting of second switch 51 and the working frequency range that disconnects control main antenna 20, when switch is in off-state, circuit part tie point 26 disconnects with ground, main antenna is operated in the first frequency range, be that frequency range is the frequency range of 700MHz-960MHz, its return loss is as shown in the A in Figure 12.When second switch 51 is in conducting state, circuit part tie point 26 is connected with ground, and main antenna is operated in the second frequency range, and namely frequency range is the frequency range of 1400MHz-2200MHz, and its return loss is as shown in the B in Figure 12; By can draw in Figure 12 the first frequency range and the second frequency range can meet can meet GSM850, GSM900, DCS, PCS, UMTS, LTE700, the LTE1500 multiband is communicated by letter, the introducing of switch is the adjusted design antenna more easily.

Wherein, when the present invention was operated in the first frequency range, the resonance frequency of the first frequency range was regulated with the distance at metal shell 12 edges and the size of inductance value by adjusting inductance 27, and inductance value is larger, and operating frequency is lower; When the present invention was operated in the second frequency range, the resonance frequency of the second frequency range was carried out suitable adjustment by the distance of regulating between second circuit part tie point 26 and the first feed part 21.When regulating the frequency of the first frequency range and the second frequency range simultaneously, need to regulate by need the distance at the edge of the first feed part 21 and metal shell 12.The first feed part 21, the closer to the edge of metal shell 12, will reduce the resonance frequency of the first frequency range and the second frequency range.

In the present embodiment, the inside of main antenna 20 is hollow form, when specifically applying on mobile phone terminal, can carry out the setting of some related devices in main antenna 20 inside, and such as left and right loud speaker 43, USB socket 23 etc., as shown in Fig. 8-9.Left speaker is positioned at the top of feed part, right loud speaker is positioned at the below of second circuit part contact 26, the sender 24 of left and right loud speaker 43 extends to the bottom of main antenna 20, and USB socket 23 is arranged at the top of inductance 27, thereby the whole mobile phone terminal indoor design that makes is compacter.

With reference to figure 13-14, slave antenna 30 comprises slave antenna radiant body 32, the second feed part 31, inductive part 33 and grounded part 34.Slave antenna radiant body 32 is the lid shape of one section opening, and the opening of slave antenna radiant body 32 is connected to the upper end of metal shell 12 by dielectric 16.Can be provided with receiver opening etc. on slave antenna radiant body 32.The second feed part 31, inductive part 33 and grounded part 34 all are arranged on the upper surface of slave antenna radiant body 32 and metal shell 12 junctions, and inductive part 33 than grounded part 34 from the second feed part 31 more close to.

In the present embodiment, slave antenna 30 is diversity antenna, and diversity antenna does not transmit usually, is used for auxiliary main antenna 20 and receives wireless signal, improves simultaneously message transmission rate or strengthens the function that receives signal performance under adverse circumstances; The form of slave antenna 30 is optional, LET(Long Term Evolution for example can be set) diversity antenna, GPS (Global position System) antenna and WIFI (Wireless Fidelity, IEEE standard 802.11) antenna etc., it can select design according to the form of main antenna 20,, if slave antenna 30 is set to have with main antenna the diversity antenna of identical function, can, with reference to the design of main antenna, repeat no more herein; When mobile phone terminal adopts multiple-input and multiple-output MIMO(multiple input multiple output) during system, slave antenna 30 can be realized transmit and receive signal the same as main antenna 20, and main antenna 20 and slave antenna 30 need to be made certain balance according to isolation.In the present embodiment, slave antenna 30 works in the GPS/WIFI frequency range simultaneously, slave antenna 30 is used for the transmitting and receiving of signal of GPS/WIFI frequency range, Figure 15 is slave antenna 30 return loss plot when being used for the GPS/WIFI frequency band signals and transmitting and receiving, frequency bandwidth covers GPS frequency range 1570-1580MHz and WIFI frequency range 2.4-2.48GHz, as seen meets frequency and the bandwidth requirement of GPS/WIFI.

Embodiment two

With reference to Figure 16, be a kind of conversion embodiment of the present invention, the present embodiment is the modification of making on the basis of embodiment one.Concrete, the first circuit part directly adopts a ground connection branch 28 to realize in the present embodiment, and ground connection branch 28 is positioned on the lower surface of metal shell 12 and main antenna radiation body 22 junctions, the same connection metal housing 12 of ground connection branch 28 and main antenna 20.In the present embodiment, the adjusting of the frequency of the first frequency range of main antenna 20 work is realized by ground connection branch 28, more close the first feed part 21 is compared in the position of the inductance 27 in the position of ground connection branch 28 and embodiment one, regulates the frequency of the first frequency range by the distance between regulated ground branch 28 and the first feed part 21.Except above-mentioned improvement part, the remainder of the present embodiment is identical with embodiment one, repeats no more herein.

Embodiment three

With reference to Figure 17 and Figure 20, be a kind of conversion embodiment of the present invention, the present embodiment is the modification of making on the basis of embodiment one, makes main antenna 20 can realize two low frequency frequency ranges.Particularly, the first circuit part adopts switching circuit to realize in the present embodiment.The first switch 61 that the first circuit part 60 comprises, the first importation 62, the first multichannel inductance 67, the second multichannel inductance 68 and the first Data Control line 64; One end connection metal housing 12 and the main antenna radiation body 22 of the first importation 62, the other end is connected with 68 with multichannel inductance 67; The first switch 61 has many input ports, and many input ports connect respectively the first multichannel inductance 67 and the second multichannel inductance 68; The first switch 61 can have many outputs, and its output directly is connected with ground, and ground refers to the reference point of signal, in the present embodiment as pcb board 18 or metal shell 12; The first Data Control line 64 1 ends are connected with the first switch 61, and the other end is connected with the mobile terminal signal on mobile phone terminal, and this mobile terminal signal is controlled the break-make of the first switch 61, thereby control whether ground connection of the first circuit part.The frame mode of above main antenna, its return loss plot as shown in figure 20.Concrete, when second switch 51 disconnects, the return loss when the first switch 61 and the first multichannel inductance 67 conducting is as shown in curve E; When second switch 51 disconnects, the return loss when the first switch 61 and the second multichannel inductance 68 conducting is as shown in curve F; When second switch 51 closures, when the first switch 61 and the first multichannel inductance 67 or second multichannel inductance 68 any one conducting, return loss as shown in curve G, this shows that the frame mode of the present embodiment can be realized two low frequency frequency ranges.Except above-mentioned improvement part, the remainder of the present embodiment is identical with embodiment one, repeats no more herein.

Embodiment four

With reference to figure 18-20, be a kind of conversion embodiment of the present invention, the present embodiment is the modification of making on the basis of embodiment three, adopts a plurality of independent switch circuit can realize improving isolating problem in the multiple-input and multiple-output switching circuit.Particularly, the first circuit part adopts two physically independent switching circuits to realize in the present embodiment, the first circuit part comprises two identical circuit parts 70, and circuit part 70 comprises switch 71, importation 72, inductive part 77 and Data Control line 74, one end of importation 72 is connected with an end of switch 71, the other end of switch 71 is by inductive part 77 ground connection, and ground refers to the reference point of signal, in the present embodiment as pcb board 18 or metal shell 12; Data Control line 74 1 ends are connected with switch 71, and its other end is connected with the mobile terminal signal on mobile phone terminal, the break-make of this mobile terminal signal control switch 71.Two identical circuit parts 70 all are connected respectively on circuit part tie point 27-1 and circuit part tie point 27-2 by the other end of importation 72.The described main antenna frame mode of employing embodiment four also can obtain return loss plot as shown in figure 20, concrete, when second switch 51 disconnects, the return loss while being connected to the switch conduction in the circuit part on circuit part tie point 27-1 is as shown in curve E; When second switch 51 disconnects, the return loss while being connected to the switch conduction in the circuit part on circuit part tie point 27-2 is as shown in curve F; When second switch 51 closures, when being connected to the switch in circuit part on circuit part tie point 27-2 or being connected to any one conducting of switch in circuit part on circuit part tie point 27-2, return loss is as shown in curve G.Except above-mentioned improvement part, the remainder of the present embodiment is identical with embodiment three, repeats no more herein.

In sum, the invention provides a kind of mobile phone terminal antenna, comprise metal shell and the main antenna and the slave antenna that are attached thereto by dielectric, main antenna is connected with metal shell and is used for receiving and wireless signal emission, slave antenna is diversity antenna, be used for auxiliary main antenna and receive wireless signal or WIFI/GPS antenna, be used for this frequency range wireless signal transmission and reception.Main antenna is arranged at the lower end of metal shell, comprise aerial radiation body, feed part, inductance and circuit part, there are groove in aerial radiation body and housing, antenna body is connected with housing with circuit part by inductance, feed part and inductance are arranged on the upper surface of aerial radiation body and metal shell junction, circuit part is arranged on the upper surface of aerial radiation body and metal shell junction, the switch that circuit part arranges by inside is controlled its whether ground connection, realizes different working frequency range.The present invention has realized the one-body molded design by techniques such as injection mouldings of metal shell and antenna part, insertion switch and inductance in addition, realized the operating state of two frequency ranges, can meet GSM850, GSM900, DCS, PCS, UMTS, LTE700, the communication of LTE1500 multiband, and adjusted design antenna easily.

Those skilled in the art should be understood that the present invention can not break away from the spirit or scope of the present invention with many other concrete forms realizations.Although also described embodiments of the invention, the present invention should be understood and these embodiment should be restricted to, make and change and revise within the spirit and scope of the invention that those skilled in the art can define as appended claims.

Claims (15)

1. a mobile phone terminal antenna, be arranged in a mobile phone terminal and be used for transmitting and receiving wireless signal, it is characterized in that, described mobile phone terminal antenna comprises:
Housing, have electric conductivity;
Antenna part, comprise main antenna, and described main antenna comprises main antenna radiation body, and described main antenna radiation body is the lid shape of an end opening, and the openend of described main antenna radiation body is connected with the lower end of described housing by dielectric;
Wherein, described main antenna part also comprises the first feed part, the first circuit part and second circuit part, described the first feed part and described second circuit partly are connected on the upper surface of junction of described main antenna radiation body and described housing, described the first circuit part is connected on the lower surface of junction of described main antenna radiation body and described housing, and described feed part, the first circuit part are connected with second circuit and are all connected described housing and described main antenna radiation body.
2. mobile phone terminal antenna according to claim 1, it is characterized in that, described antenna part also comprises slave antenna, described slave antenna comprises slave antenna radiation body, described slave antenna radiation body is the lid shape of an end opening, the openend of described slave antenna radiation body is connected with the upper end of described housing by dielectric, and described housing, described main antenna radiation body and described slave antenna radiation body have formed the shell of whole mobile phone terminal; Described slave antenna is diversity antenna, and described slave antenna is realized launching with the signal of described main antenna identical function and receiving, and perhaps described slave antenna is realized launching with the signal of described main antenna difference in functionality and receiving as multiplex antenna.
3. mobile phone terminal antenna according to claim 2, it is characterized in that, described slave antenna part also comprises the second feed part, inductive part and grounded part, described inductive part, described grounded part and described the second feed part all are positioned on the upper surface of described housing and described slave antenna radiation body junction, and described inductive part, described grounded part be connected the second feed and partly all connect described housing and described slave antenna radiation body.
4. mobile phone terminal antenna according to claim 1 and 2, is characterized in that, is provided with inductance or inductance capacitance components and parts on described the first circuit part, and described inductance or inductance capacitance components and parts connect described main antenna radiation body and described housing.
5. mobile phone terminal antenna according to claim 1 and 2, it is characterized in that, the junction of described main antenna and described housing is provided with second circuit part contact, described second circuit part contact connects described housing and described main antenna, described second circuit part contact is positioned at the junction of described main antenna radiation body and described housing and with described feed, partly is positioned on same end face, and described second circuit part contact partly is connected with described second circuit.
6. mobile phone terminal antenna according to claim 5, is characterized in that, described second circuit partly comprises:
The second importation, an end is connected with described second circuit part contact;
Second switch, an end is connected with the other end of described the second importation, and described second switch ground connection;
The second Data Control line, an end is connected with described second switch, and the other end of described the second Data Control line is connected with a mobile terminal signal, and described mobile terminal signal is controlled the break-make of described second switch.
7. mobile phone terminal antenna according to claim 6, is characterized in that, described second circuit part also comprises output, and an end of described output is connected with the other end of described second switch, the other end ground connection of described output.
8. mobile phone terminal antenna according to claim 6, is characterized in that, an end of described second switch directly or indirectly is connected with described the second importation by inductance, the other end of described second switch directly or indirectly by inductance ground connection.
9. mobile phone terminal antenna according to claim 1 and 2, is characterized in that, described the first circuit part comprises:
The first importation, an end connects described housing and described main antenna radiation body by one first circuit part contact;
The multichannel inductance, an end is connected with the other end of the first importation;
The first switch, an end is connected with the other end of described multichannel inductance, and described the first switch ground connection;
The first Data Control line, an end is connected with the other end of described the first switch, and the other end of described the first Data Control line is connected with a mobile terminal signal, and described mobile terminal signal is controlled the break-make of described the first switch.
10. mobile phone terminal antenna according to claim 9, is characterized in that, an end of described the first switch directly or indirectly is connected with described the first importation by inductance, the other end of described the first switch directly or indirectly by inductance ground connection.
11. mobile phone terminal antenna according to claim 1, is characterized in that, described main antenna inside is provided with the mobile phone components such as USB, loud speaker.
12. mobile phone terminal antenna according to claim 1, is characterized in that, described dielectric adopts Shooting Technique to be connected with described antenna part with described housing.
13. mobile phone terminal antenna according to claim 1, is characterized in that, the material of described housing is metal or alloy.
14. mobile phone terminal antenna according to claim 1, is characterized in that, the distance between described antenna part and housing is 0.5mm-2mm.
15. mobile phone terminal antenna according to claim 1 and 2 is characterized in that described dielectric is closed hoop.
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