CN103236583B - A kind of novel LTE metal frame antenna strengthening bandwidth - Google Patents
A kind of novel LTE metal frame antenna strengthening bandwidth Download PDFInfo
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- CN103236583B CN103236583B CN201310147544.6A CN201310147544A CN103236583B CN 103236583 B CN103236583 B CN 103236583B CN 201310147544 A CN201310147544 A CN 201310147544A CN 103236583 B CN103236583 B CN 103236583B
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Abstract
The invention provides a kind of novel LTE metal frame antenna strengthening bandwidth, including the pcb board of handheld terminal and the metal outer frame that is connected with the edge of pcb board, also include antenna part and the electric part being connected with antenna part, antenna part is positioned at the clearance zone of setting on pcb board and is connected with pcb board, and antenna part mainly includes metal edge frame, feed section, grounded part, loop radiant section and earth point electric connecting member; Electrical fitting and the reactance device with break-make radiofrequency signal is mainly included in electric part, there is radio frequency earth terminal inside electrical fitting for the ground connection that is connected with pcb board, and electrical fitting and a mobile terminal signal are connected thus controlling the break-make of electrical fitting. A kind of novel LTE metal frame antenna strengthening bandwidth provided by the invention, effectively utilizes part metals housing and adds electrical fitting, by controlling the break-make of electrical fitting thus realizing strengthening the effect of bandwidth, can cover many frequency ranges of GSM, UMTS, LTE.
Description
Technical field
The present invention relates to the design field of antenna for mobile phone, particularly relate to a kind of novel LTE metal frame antenna strengthening bandwidth.
Background technology
Miniaturized multiband built-in aerial is always up the developing direction of hand-held communication terminal antenna. Existing antenna form includes multi-frequency monopole sub antenna (monopoleantenna), monocycle or double loop antenna (singleloopanddualloopantenna), inverted folded antenna (IFA), planar inverted folded antenna (PIFA). These antenna type is respectively arranged with condition and the performance of its use in different hand-held communication terminal environment. Different antenna forms can be selected according to different requirements.
Usual mobile terminal device includes GSM850/900, DCS, PCS, UMTS, its frequency range 0.824GHz-0.96GHz, 1.71GHz-2.17GHz. Along with the development of LTE technology, 3.5GHz, 4GHz receives much concern. More and more many mobile phones need antenna to meet traditional 2G network frequency range and LTE frequency range simultaneously, but the thickness of mobile phone is more and more thinner, require also more and more higher to Antenna Design, and traditional antenna is difficult to reach the requirement of client. The development of the mobile terminals such as mobile phone is more and more diversified. Iphone series mobile phone employs the part participation radiation as antenna of the part mobile phone hardware all audaciously from 4 series to iphone5. But iphone4 is wireloop antenna, iphone5 is dynamic metal loop antenna. Hardware participates in Antenna Design, is conducive to further with the confined space, size reduction.
Summary of the invention
It is desirable to provide a kind of novel LTE metal frame antenna strengthening bandwidth, this antenna effectively utilizes part metals housing, and adds electrical fitting and realize broadband feature, can cover many frequency ranges of GSM, UMTS, LTE.
The present invention is a kind of novel LTE metal frame antenna strengthening bandwidth, it is characterized in that, including the pcb board of handheld terminal and the metal outer frame that is connected with the edge of described pcb board, one end of described pcb board is provided with clearance zone, and the two ends of described metal outer frame extend respectively in the clearance zone of described pcb board;The novel LTE metal frame antenna of described enhancing bandwidth also includes antenna part and the electric part being connected with described antenna part, described antenna part is positioned at the clearance zone of described pcb board and is connected with described pcb board, described ground electrical parts and described electric part and a mobile terminal signal are connected, and described mobile terminal signal controls described electric part whether ground connection; Wherein, described antenna part includes:
Metal edge frame, is positioned at the clearance zone of pcb board, and the two ends of described metal edge frame form the first gap and the second gap respectively with the two ends of described metal outer frame;
Feed section, is connected with a feed signal end;
Grounded part, ground connection and being connected with described pcb board;
Loop radiant section, is connected with described feed section and described grounded part, and between described feed section and described grounded part, described loop radiant section is also connected with described metal edge frame;
Earth point electric connecting member, is used for connecting described loop radiant section and described electric part.
In some embodiments, described antenna part also includes ground connection parasitic radiation sheet, and described ground connection parasitic radiation sheet is positioned at described first gap place and the one end with described metal outer frame is connected, and is used for optimizing resonant frequency.
In some embodiments, described loop radiant section includes loop radiation Part I, loop radiation Part II, loop radiation Part III and loop radiation Part IV, radiation Part II in wherein said loop radiates Part I by described loop and is connected with described feed section, radiation Part II in described loop is connected with described metal edge frame by described loop radiation Part III, and the radiation of described loop Part II is relative with described metal edge frame forms the 3rd gap, radiation Part II in described loop is connected with described grounded part by described loop radiation Part IV.
In some embodiments, described loop radiant section also includes loop radiation Part V, and described loop radiation Part V is positioned at described second gap place and is connected with described metal edge frame, is used for optimizing resonant frequency.
In some embodiments, described loop radiation Part II is connected with described electric part by described earth point electric connecting member.
In some embodiments, described electric part includes electrical fitting, described electrical fitting is the device with break-make radiofrequency signal, described electrical fitting be internally provided with radio frequency earth terminal for ground connection, described electrical fitting is additionally provided with control interface, for being connected with described mobile terminal signal, described mobile terminal signal controls the break-make of described electrical fitting.
In some embodiments, described electric part also includes the reactance device being connected with described electrical fitting.
In some embodiments, described electrical fitting is connected with described electric connecting member by described reactance device.
In some embodiments, described reactance device is inductance device or capacitive device.
Due to the fact that the above technical scheme of employing, so as to compared with prior art: effectively utilizing part metals housing and add electrical fitting, by controlling the break-make of electrical fitting thus realizing strengthening the effect of bandwidth, many frequency ranges of GSM, UMTS, LTE can be covered.
Accompanying drawing explanation
In conjunction with accompanying drawing, by hereafter state detailed description, the above-mentioned and other feature and advantage of the present invention can be more clearly understood that, wherein:
Fig. 1 inventive antenna assembles figure;
Fig. 2 inventive antenna surrounding enviroment figure;
Fig. 3 side view of the present invention;
Fig. 4 front view of the present invention;
Fig. 5 electric connecting mode one of the present invention;
Fig. 6 electric connecting mode two of the present invention;
Fig. 7 inventive antenna frequency response chart;
Fig. 8 inventive antenna efficiency by inputoutput test figure.
Symbol description:
100-PCB plate
101,102,103-metal outer frame
104-clearance zone
200-antenna part
201-feed section
202-loop radiation Part I
203-loop radiation Part II
204-loop radiation Part III
205-metal edge frame
206-loop radiation Part V
207-loop radiation Part IV
208-grounded part
209-electric connecting member
210-ground connection parasitic radiation sheet
211-the first gap
212-the second gap
213-the 3rd gap
300-electric part
301-reactance device
302-electrical fitting
303-controls interface
400-mobile phone component
Detailed description of the invention
Referring to the accompanying drawing illustrating the embodiment of the present invention, the present invention is described in more detail. But, the present invention can realize in many different forms, and should not be construed as by restriction of the embodiment of proposition at this. On the contrary, it is proposed to these embodiments are to reach fully and complete disclosure, and make those skilled in the art understand the scope of the present invention completely. In these accompanying drawings, for clarity sake, it is possible to be exaggerated size and the relative size in layer and region.
With reference to Fig. 1-6, a kind of novel LTE metal frame antenna strengthening bandwidth provided by the invention, it pcb board 100 including handheld terminal and metal outer frame 101,102,103, metal outer frame is arranged on the edge of pcb board 100 and is connected with pcb board 100, pcb board 100 is divided into clearance zone 104 and non-clearance zone, this clearance zone 104 is positioned at one end of pcb board 100, and the two ends of metal outer frame 101 and 102 extend on the outer ledge of clearance zone 104 of pcb board 100. Antenna part 200 and the electric part 300 being connected with antenna part 200 it is provided with in the clearance zone 104 of pcb board 100, electric part 300 is connected internally on pcb board ground connection, and electric part 300 is connected with a mobile terminal signal, mobile terminal signal controls electric part 300 whether ground connection. Wherein, antenna part includes metal edge frame 205, feed section 201, grounded part 208, loop radiant section 202-207 and earth point electric connecting member 209.
In the present embodiment, as Figure 2-3, metal edge frame 205 is arranged on the edge, base of pcb board clearance zone, and one end of metal edge frame 205 is relative with one end of metal outer frame 101 forms the first gap 211, the other end of metal edge frame 205 is relative with one end of metal outer frame 102 forms the second gap 212; The position in the first gap 211 and the second gap 212 can be moved as the case may be on the outer ledge of the clearance zone of pcb board 100, and first the big I in gap 211 and the second gap 212 be changed as the case may be, the suitable size regulating the first gap 211 and the second gap 212 can obtain good frequency range and impedance, and affects minimum during by optimizing design and reaching hand-held. First gap 211 place is additionally provided with the ground connection parasitic radiation sheet 210 in " U " font, ground connection parasitic radiation sheet 210 is longitudinally connected with one end of metal outer frame 101, ground connection parasitic radiation sheet 210 is used for optimizing resonant frequency, and the shape of certain ground connection parasitic radiation sheet 210 can be determined as the case may be; The length of ground connection parasitic radiation sheet 210 can be changed according to the length of metal outer frame 101, movement due to the position along with the first gap 211, the length of metal outer frame 101 can change therewith, the optimization of resonant frequency is carried out now by the length changing ground connection parasitic radiation sheet 210, certainly, when the length of metal outer frame 101 reaches necessarily to require, ground connection parasitic radiation sheet 210 also can disappear.
In the present embodiment, loop radiant section includes loop radiation Part I 202, loop radiation Part II 203, loop radiation Part III 204 and loop radiation Part IV 207. Loop radiation Part I 202 is connected with feed section 201, and feed section 201 is connected with a feed signal end; Loop radiation Part I 202 is connected on loop radiation Part II 203, loop radiation Part II 203 is connected on metal edge frame 205 by loop radiation Part III 204, the position of loop radiation Part III 204 is used for regulating antenna frequencies and impedance operator, its position can regulate as the case may be, during concrete enforcement, loop radiation Part III 204 can substitute with screw, so not only introduce flexible adjustment, structurally play the effect of reinforcing simultaneously; Loop radiation Part II 203 opens certain distance with metal edge frame 205 relative spacing, and forms the 3rd gap 213, and the 3rd gap 213 is for regulating loop frequency and impedance; Loop radiation Part II 203 is connected with grounded part 208 by loop radiation Part IV 207; Radiation Part II 203 in loop is connected to electric part 300 also by earth point electric connecting member 209, and earth point electric connecting member 209 can be determined with the distance of loop radiation Part II 203 end as the case may be with the link position of loop radiation Part II 203. Loop radiant section also includes loop radiation Part V 206, it is positioned at the second gap 212 place and the one end with metal edge frame 205 is connected, for optimizing resonant frequency, the length of loop radiation Part V 206 can be changed according to the length of metal edge frame 205, movement due to the position along with the second gap 212, the length of metal edge frame 205 can change therewith, now by changing back to the length of path radiation Part V 206 to carry out the optimization of resonant frequency, certainly, when the length of metal edge frame 205 reaches necessarily to require, loop radiation Part V 206 also can disappear. Comprehensive the above, loop radiation Part II 203, loop radiation Part III 204 are connected with metal edge frame 205, metal edge frame 205 radiates Part V 206 with loop again and is connected, radiation Part II 203 in loop radiates Part IV 207 with loop again and is connected final ground connection, loop radiation Part II 203 is connected with earth point electric connecting member 209 and enters electric part 300, ultimately forms radiant loop.
In the present embodiment, electric part 300 includes an electrical fitting 302, and electrical fitting 302 is the device with break-make radiofrequency signal, such as radio-frequency (RF) switch or PIN diode etc., there is radio frequency earth terminal for being connected with pcb board in the inside of electrical fitting 302, forms complete signal loop; Being provided with control interface 303 on electrical fitting 302, for being connected with a mobile terminal signal, mobile terminal signal control electric part 300 carries out the break-make of radiofrequency signal thus controlling electric part 300 whether ground connection. As described in Figure 7, in figure, f1 and f2 show respectively electrical fitting 302 frequency response design sketch of whole antenna when with conducting state in specific implementation process, as can be seen from Figure, when electrical fitting 302 is under state time, occur that the frequency range of response is low frequency 0.7GHz to 0.82GHz and high frequency 1.71GHz to 2.17GHz; When electrical fitting 302 in the on-state time, occur response frequency range be 0.824GHz to 0.96GHz and high frequency 2.5GHz to 2.69GHz.Thus we can realize antenna by the break-make of control electric part 300 occurs response in different frequency ranges, meet user's demand at different frequency range, thus reaching to increase the effect of bandwidth.
In the present embodiment, reactance device 301 it is additionally provided with in electric part 300, for the frequency in electric part 300 is finely tuned, in the present embodiment, reactance device 301 is inductance device, position reactance device 301 according to earth point electric connecting member 209 can be capacitive character or resistive device, certain reactance device 301 also can be not provided with, can according to specifically deciding as circumstances require. As it is shown in figure 5, be electric connecting mode one of the present invention, reactance device 301 is arranged between electrical fitting 302 and earth point electric connecting member 209. Certainly, reactance device 301 also can be integrated on reactance device 301, and earth point electric connecting member 209 is directly connected with electrical fitting 302, and electric connecting mode of the present invention two as shown in Figure 6, this mode can save space better.
With reference to Fig. 8, for embodiment of the present invention efficiency test figure, under state f1, required frequency range is low frequency 0.7GHz to 0.82GHz and high frequency 1.71GHz to 2.17GHz, and corresponding efficiency all reaches-4dB, and peak reaches-2dB. Under conducting state f2, required frequency range is low frequency 0.824GHz to 0.96GHz and high frequency 2.5GHz to 2.69GHz, and corresponding efficiency all reaches-4dB, and peak reaches-3dB.
In sum, the invention provides a kind of novel LTE metal frame antenna strengthening bandwidth, pcb board that the novel LTE metal frame antenna of this enhancing bandwidth includes handheld terminal and the metal outer frame being connected with the edge of pcb board, the two ends of metal outer frame extend respectively in the clearance zone arranged on pcb board; Also include antenna part and the electric part being connected with antenna part, antenna part is positioned at the clearance zone of pcb board and is connected with pcb board, and antenna part includes mainly including metal edge frame, feed section, grounded part, loop radiant section and earth point electric connecting member; Electrical fitting and the reactance device with break-make radiofrequency signal is mainly included in electric part, there is radio frequency earth terminal inside electrical fitting for the ground connection that is connected with pcb board, and electrical fitting and a mobile terminal signal are connected thus controlling the break-make of electrical fitting. A kind of novel LTE metal frame antenna strengthening bandwidth provided by the invention, effectively utilizes part metals housing, and adds electrical fitting, by controlling the break-make of electrical fitting thus realizing strengthening the effect of bandwidth, can cover many frequency ranges of GSM, UMTS, LTE.
Those skilled in the art should be understood that the present invention can be implemented without departing from the spirit or scope of the present invention with other concrete forms many. Although also have been described embodiments of the invention, it should be understood that the present invention should not be limited to these embodiments, those skilled in the art can change and modifications as made within spirit and scope of the invention that appended claims defines.
Claims (8)
1. the novel LTE metal frame antenna strengthening bandwidth, it is characterized in that, including the pcb board of handheld terminal and the metal outer frame that is connected with the edge of described pcb board, one end of described pcb board is provided with clearance zone, and the two ends of described metal outer frame extend respectively in the clearance zone of described pcb board; The novel LTE metal frame antenna of described enhancing bandwidth also includes antenna part and the electric part being connected with described antenna part, described antenna part is positioned at the clearance zone of described pcb board and is connected with described pcb board, described ground electrical parts and described electric part and a mobile terminal signal are connected, and described mobile terminal signal controls described electric part whether ground connection;Wherein, described antenna part includes:
Metal edge frame, is positioned at the clearance zone of pcb board, and the two ends of described metal edge frame form the first gap and the second gap respectively with the two ends of described metal outer frame;
Feed section, is connected with a feed signal end;
Grounded part, ground connection and being connected with described pcb board;
Loop radiant section, is connected with described feed section and described grounded part, and between described feed section and described grounded part, described loop radiant section is also connected with described metal edge frame;
Earth point electric connecting member, is used for connecting described loop radiant section and described electric part;
Described loop radiant section includes loop radiation Part I, loop radiation Part II, loop radiation Part III and loop radiation Part IV, radiation Part II in wherein said loop radiates Part I by described loop and is connected with described feed section, radiation Part II in described loop is connected with described metal edge frame by described loop radiation Part III, and radiation Part II formed threeth gap relative to described metal edge frame, described loop, radiation Part II in described loop is connected with described grounded part by described loop radiation Part IV.
2. the novel LTE metal frame antenna of enhancing bandwidth according to claim 1, it is characterized in that, described antenna part also includes ground connection parasitic radiation sheet, and described ground connection parasitic radiation sheet is positioned at described first gap place and the one end with described metal outer frame is connected, and is used for optimizing resonant frequency.
3. the novel LTE metal frame antenna of enhancing bandwidth according to claim 1, it is characterized in that, described loop radiant section also includes loop radiation Part V, and described loop radiation Part V is positioned at described second gap place and is connected with described metal edge frame, is used for optimizing resonant frequency.
4. the novel LTE metal frame antenna of enhancing bandwidth according to claim 1, it is characterised in that described loop radiation Part II is connected with described electric part by described earth point electric connecting member.
5. the novel LTE metal frame antenna of enhancing bandwidth according to claim 1, it is characterized in that, described electric part includes electrical fitting, described electrical fitting is the device with break-make radiofrequency signal, described electrical fitting be internally provided with radio frequency earth terminal for ground connection, being additionally provided with control interface on described electrical fitting, for being connected with described mobile terminal signal, described mobile terminal signal controls the break-make of described electrical fitting.
6. the novel LTE metal frame antenna of enhancing bandwidth according to claim 5, it is characterised in that described electric part also includes the reactance device being connected with described electrical fitting.
7. the novel LTE metal frame antenna of enhancing bandwidth according to claim 6, it is characterised in that described electrical fitting is connected with described electric connecting member by described reactance device.
8. the novel LTE metal frame antenna of enhancing bandwidth according to claim 6, it is characterised in that described reactance device is inductance device or capacitive device.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310147544.6A CN103236583B (en) | 2013-04-25 | 2013-04-25 | A kind of novel LTE metal frame antenna strengthening bandwidth |
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| CN201310147544.6A CN103236583B (en) | 2013-04-25 | 2013-04-25 | A kind of novel LTE metal frame antenna strengthening bandwidth |
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| CN103236583B true CN103236583B (en) | 2016-06-08 |
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