CN103779670A - Antenna - Google Patents
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- CN103779670A CN103779670A CN201410062346.4A CN201410062346A CN103779670A CN 103779670 A CN103779670 A CN 103779670A CN 201410062346 A CN201410062346 A CN 201410062346A CN 103779670 A CN103779670 A CN 103779670A
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Abstract
The invention relates to the field of wireless communication, and particularly provides an antenna. The antenna comprises a first antenna part, a second antenna part and a switch part. The first end of the first antenna part serves as the antenna transmitting end, the first end of the second antenna part is connected with one point on the first antenna part, and the switch part is used for being connected with the driving signal end, providing a signal channel between the driving signal end and the second end of the first antenna part in the first operating state, and providing a signal channel between the driving signal end and the second end of the second antenna part in the second operating state. According to the antenna, due to the fact that different radiating frequency bands can be selected by selecting different antenna lengths in different operating states, the radiating efficiency of the antenna in each radiating frequency band is improved, then different working sub-frequency bands can be selected by selecting different matching impedances for the selected radiating frequency bands, and complete covering of the LTE frequency bands is achieved.
Description
Technical field
The present invention relates to wireless communication field, and relate more specifically to a kind of antenna.
Background technology
In recent years, flourish along with wireless communication industry, the portable radio communication device of for example mobile phone and so on becomes the necessity of people's life.In portable radio communication device, antenna assembly is being played the part of the key player who transmits with reception wireless signal, and therefore the operating characteristic of antenna assembly has directly affected wireless signal transmitting-receiving ability and the quality of radio communication device.
Along with the low frequency band spreading of radio communication, except needs are supported global system for mobile communications 900 (GSM90, its frequency band is about 880～960MHz), global system for mobile communications 850 (GSM850, its frequency band is about 824～894MHz) outside, also need to support LTE frequency range (its frequency band is about 698～960MHz).
Traditional antenna assembly is generally made up of inverted F type plane antenna device, and it is only applicable to the single communication applications of low frequency.In addition, proposed a kind of antenna assembly of switch-able band, as shown in Figure 1, it can be applicable to global system for mobile communications 850 (GSM850) and global system for mobile communications 900 (GSM900) simultaneously.
The antenna assembly 2 of switch-able band is as shown in Figure 1 made up of inverted F type plane antenna device, and there is the structures such as Department of Radiation 21, feed side 22, the first earth terminal 23 and the second earth terminal 24, wherein, Department of Radiation 21 has the 21a of first paragraph portion, kink 21b and the 21c of second segment portion, feed side 22, the first earth terminal 23 and the second earth terminal 24 are all arranged on the 21a of first paragraph portion of Department of Radiation 21, and feed side 22 is connected with the first end 21d of the 21a of first paragraph portion.The first earth terminal 23 is adjacent to feed side 22, and is arranged between feed side 22 and the second earth terminal 24, and the second 24 of earth terminals are arranged between the kink 21b of the first earth terminal 23 and Department of Radiation 21.
The antenna assembly 2 of switch-able band as shown in Figure 1 can be realized certain limit frequency band by switching earth point switches, but the frequency band range of this switching is very limited, only can meet the requirement of low-frequency range double frequency-band, can realize the switching of GSM850 and GSM900, this does not reach the frequency range requirement of LTD far away.This is because LTE mobile phone not merely will meet the frequency range requirement of 2G/3G, but also will meet the frequency range requirement of LTE, so require LTE mobile phone can cover the frequency band range of 698-960MHz simultaneously.
Therefore, need a kind of antenna that can realize the covering of LTE full frequency band, it can realize all standing of low-frequency range 698MHz to 960MHz frequency band range.
Summary of the invention
In order to solve the problems of the technologies described above, the invention provides a kind of antenna, first it select one of two antenna lengths to select one of two different radiation frequency ranges and then to select one of two matched impedances of selected radiation frequency range to select one of two frequency sub-band in selected radiation frequency range, can realize the switching of four frequency sub-band, thereby further realize all standing of LTE frequency range.
According to the embodiment of the present invention, a kind of antenna is provided, for portable set, comprise: the first antenna part and the second antenna part, wherein, the first end of described the first antenna part is as antenna transmission end, the first end of described the second antenna part and being a bit connected in described the first antenna part; Switch sections, for being connected with pumping signal end, and under the first mode of operation, between described pumping signal end and the second end of described the first antenna part, provide signal path, under the second mode of operation, between described pumping signal end and the second end of described the second antenna part, provide signal path.
According to the embodiment of the present invention, described switch sections comprises input, the first output and the second output, described input is connected with described pumping signal end, and described the first output is connected with the second end of described the first antenna part, and described the second output is connected with the second end of described the second antenna part, described switch sections also comprises the first compatible portion being located between described input and described the first output, be located at the second compatible portion between described input and described the second output, and diverter switch, the first end of described diverter switch connects the described input of described switch sections, the second end of described diverter switch connects the first end of described the first compatible portion, the 3rd end of described switch connects the first end of described the second compatible portion, the second end of described the first compatible portion connects described first output of described switch sections, the second end of described the second compatible portion connects described second output of described switch sections, under described the first mode of operation, described the first compatible portion work, described antenna operation is in the first frequency range, and under described the second mode of operation, described the second compatible portion work, described antenna operation is in the second frequency range.
In one embodiment, described the first compatible portion comprises the first sub-switch, the first sub-compatible portion and the second sub-compatible portion; The first end of described the first sub-switch connects the first end of described the first compatible portion; The second end of described the first sub-compatible portion is connected the second end of described the first compatible portion with the second end of the second sub-compatible portion; The second end of the first end of described the first sub-compatible portion and described the first sub-switch is connected, and the 3rd end of the first end of described the second sub-compatible portion and described the first sub-switch is connected; Described the first mode of operation comprises the first child-operation state and the second child-operation state; Under described the first child-operation state, described the first sub-compatible portion work, first frequency sub-band of described antenna operation in the first frequency range; Under described the second child-operation state, described the second sub-compatible portion work, second frequency sub-band of described antenna operation in the first frequency range.
In one example, described the first sub-compatible portion comprises the first impedance, and the first end of described the first impedance is connected with the second end with the first end of described the first sub-compatible portion, and the second end ground connection of described the first impedance; Described the second sub-compatible portion comprises the second impedance and the 3rd impedance, the first end of described the second impedance is connected with the first end of described the second sub-compatible portion, the second end of described the second impedance is connected with the first end of described the 3rd impedance with the second end of described the second sub-compatible portion and is connected, the second end ground connection of described the 3rd impedance.
In this embodiment, described the second compatible portion comprises the second sub-switch, the 3rd sub-compatible portion and the 4th sub-compatible portion; The first end of described the second sub-switch connects the first end of described the second compatible portion; The second end of described the 3rd sub-compatible portion is connected the second end of described the second compatible portion with the second end of the 4th sub-compatible portion; The second end of the first end of described the 3rd sub-compatible portion and described the second sub-switch is connected, and the 3rd end of the first end of described the 4th sub-compatible portion and described the second sub-switch is connected; Described the second mode of operation comprises the 3rd child-operation state and the 4th child-operation state; Under described the 3rd child-operation state, described the 3rd sub-compatible portion work, three frequency sub-band of described antenna operation in the second frequency range; Under described the 4th child-operation state, described the 4th sub-compatible portion work, four frequency sub-band of described antenna operation in the second frequency range.
In one example, described the 3rd sub-compatible portion comprises the 4th impedance, and the first end of described the 4th impedance is connected with the second end with the first end of described the 3rd sub-compatible portion, and the second end ground connection of described the 4th impedance; Described the 4th sub-compatible portion comprises the 5th impedance and the 6th impedance, the first end of described the 5th impedance is connected with the first end of described the 4th sub-compatible portion, the second end of described the 5th impedance is connected with the first end of described the 6th impedance with the second end of described the 4th sub-compatible portion and is connected, the second end ground connection of described the 6th impedance.
In one example, described the first impedance has the first inductance value, and described the second impedance has the first capacitance, described the 3rd impedance has the second inductance value, described the 4th impedance has the 3rd inductance value, and described the 5th impedance has the second capacitance, and described the 6th impedance has the 4th inductance value.
In another embodiment, described the first compatible portion comprises the first impedance, the second impedance and the first sub-switch, the first end of described the first impedance, the second end of described the second impedance and the second end of described the first sub-switch and the second end of described the first compatible portion are connected, the second end ground connection of described the first impedance, the first end of the first end of described the second impedance and described the first sub-switch is connected with the first end of described the first compatible portion; Described the first mode of operation comprises the first child-operation state and the second child-operation state; Under described the first child-operation state, described the first sub-switch conduction, first frequency sub-band of described antenna operation in the first frequency range; Under described the second child-operation state, described the first sub-switch disconnects, second frequency sub-band of described antenna operation in the first frequency range.
In this another embodiment, described the second compatible portion comprises the 3rd impedance, the 4th impedance and the second sub-switch, first end, the second end of described the 4th impedance and second end of described the second sub-switch of described the 3rd impedance are connected with the second end of described the second compatible portion, the second end ground connection of described the 3rd impedance, the first end of the first end of described the 4th impedance and described the second sub-switch is connected with the first end of described the second compatible portion; Described the second mode of operation comprises the 3rd child-operation state and the 4th child-operation state; Under described the 3rd child-operation state, described the second sub-switch conduction, three frequency sub-band of described antenna operation in the second frequency range; Under described the 4th child-operation state, described the second sub-switch disconnects, four frequency sub-band of described antenna operation in the second frequency range.
In one example, described the first impedance has the first inductance value, and described the second impedance has the first capacitance, and described the 3rd impedance has the second inductance value, and described the 4th impedance has the second capacitance.
Adopt according to the antenna of the embodiment of the present invention, can be under mobile phone environment, realize the design of LTE full frequency band, and can realize good antenna radiation efficiency in LTE full frequency band.
Other features and advantages of the present invention will be set forth in the following description, and, partly from specification, become apparent, or understand by implementing the present invention.Object of the present invention and other advantages can be realized and be obtained by specifically noted structure in specification, claims and accompanying drawing.
Accompanying drawing explanation
Accompanying drawing is used to provide a further understanding of the present invention, and forms a part for specification, for explaining the present invention, is not construed as limiting the invention together with embodiments of the present invention.In the accompanying drawings:
Fig. 1 illustrates the structural representation of a kind of antenna assembly of switch-able band in prior art;
Fig. 2 illustrates according to the structural representation of the antenna of the embodiment of the present invention;
Fig. 3 illustrates according to the structural representation of the switch sections in the antenna of the embodiment of the present invention;
Fig. 4 illustrates according to the concrete layout example of the one of the antenna of the embodiment of the present invention;
Fig. 5 illustrates according to the structural representation of the first compatible portion shown in Fig. 3 of first embodiment of the invention;
Fig. 6 illustrates according to the first sub-compatible portion shown in Fig. 5 of first embodiment of the invention and the structural representation of the second sub-compatible portion;
Fig. 7 illustrates according to the structural representation of the second compatible portion shown in Fig. 3 of first embodiment of the invention;
Fig. 8 illustrates according to the 3rd sub-compatible portion shown in Fig. 7 of first embodiment of the invention and the structural representation of the 4th sub-compatible portion;
Fig. 9 illustrates according to the structural representation of the first compatible portion shown in Fig. 3 of second embodiment of the invention;
Figure 10 illustrates according to the structural representation of the second compatible portion shown in Fig. 3 of second embodiment of the invention
Figure 11 illustrates the standing wave pattern in each frequency range according to the antenna of the embodiment of the present invention.
Figure 12 illustrates according to the antenna of the embodiment of the present invention and arrives the efficiency chart between the frequency range of 960MHz at 700MHz.
Embodiment
In order to make object, technical scheme and the advantage of the embodiment of the present invention more obvious, describe in detail below with reference to accompanying drawings according to each embodiment of the present invention.Obviously, described embodiment is only a part of embodiment of the present invention, rather than whole embodiment of the present invention.Based on the embodiment describing in the present invention, within all other embodiment that those skilled in the art obtain in the situation that not paying creative work should fall into protection scope of the present invention.
Here, it should be noted that in the accompanying drawings, identical Reference numeral is given and substantially had part identical or similar structures and function, and will omit being repeated in this description about them.
At present, under mobile phone environment, Antenna Design need to be limited in very little space, for example, and width 30mm, height 5mm, headroom 5mm.In addition,, in mobile phone environment, Antenna Design also needs to consider the impact of the metal devices such as USB interface is placed in the middle, loud speaker, microphone, motor.
According to conventional Antenna Design, under above-mentioned mobile phone environment, can realize at the most the design of low frequency one-segment, for example: 880MHz-960MHz, obtain the bandwidth about 80MHz, this only can meet the requirement of GSM900.
In addition, coordinate conventional handoff technique or coordinate the earth point handoff technique shown in Fig. 1, also can only meet at most the design of low frequency two-band, be i.e. 824MHz-960MHz, the approximately bandwidth of 136MHz left and right.But this does not reach the frequency range requirement of LTE far away.
In conventional handoff technique, same antenna pattern (pattern) can not cover the radiation bandwidth of the about 270MHz between 698MHz-960MHz simultaneously.That is to say, even if conventional handoff technique can obtain the standing wave bandwidth of the about 270MHz between 698MHz-960MHz, but because the radiation efficiency in a big chunk frequency range of its about 270MHz between 698MHz-960MHz is very low, therefore the last antenna efficiency obtaining is also correspondingly very low.
Consider above-mentioned factor, the present invention is to improve the radiation efficiency of antenna as starting point, thereby in the frequency range of the about 270MHz between 698MHz-960MHz, obtains good antenna operating efficiency.
Fig. 2 shows according to the structural representation of the antenna of the embodiment of the present invention, can be in the portable set of for example portable communication appts, portable computer, personal digital assistant, panel computer and so on according to the antenna of the embodiment of the present invention.
As shown in Figure 2, comprise according to the antenna 1 of the embodiment of the present invention: the first antenna part 11, the second antenna part 12 and switch sections 13.
The first end 111 of described the first antenna part 11 is as antenna transmission end, the first end 121 of described the second antenna part 12 and being a bit connected in described the first antenna part 11.
Fig. 3 shows according to the structural representation of the switch sections 13 in the antenna 1 of the embodiment of the present invention.
As shown in Figure 3, described switch sections 13 comprises input 131, the first output 132 and the second output 133.
Described input 131 is connected with described pumping signal end, and described the first output 132 is connected with the second end 112 of described the first antenna part 11, and described the second output 133 is connected with the second end 122 of described the second antenna part 12.
In addition, as shown in Figure 3, described switch sections 13 also comprises the first compatible portion 134 being located between described input 131 and described the first output 132, be located at the second compatible portion 135 between described input 131 and described the second output 133, and diverter switch 136, the first end 1361 of described diverter switch 136 connects the described input 131 of described switch sections 13, the second end 1362 of described diverter switch 136 connects the first end 1341 of described the first compatible portion 134, the second end 1363 of described diverter switch 136 connects the first end 1351 of described the second compatible portion 135, the second end 1342 of described the first compatible portion 134 connects described first output 132 of described switch sections 12, the second end 1352 of described the second compatible portion 135 connects described second output 133 of described switch sections 12.
As shown in Figure 3, under described the first mode of operation, the first end 1361 of described diverter switch 136 connects the described input 131 of described switch sections 13, the second end 1362 of described diverter switch 136 connects the first end 1341 of described the first compatible portion 134, described the first compatible portion 134 is worked, and operates in the first frequency range according to the antenna 1 of the embodiment of the present invention.
As shown in Figure 3, under described the second mode of operation, the first end 1361 of described diverter switch 136 connects the described input 131 of described switch sections 13, the second end 1362 of described diverter switch 136 connects the first end 1351 of described the second compatible portion 135, described the second compatible portion 135 is worked, and operates in the second frequency range according to the antenna 1 of the embodiment of the present invention.
Fig. 4 shows according to the concrete layout example of the one of the antenna 1 of the embodiment of the present invention.
As shown in Figure 4, the first end 111 of the first antenna part 11 is as antenna transmission end, the first end 121 of the second antenna part 12 is connected with the M point in described the first antenna part 11, M point be in described the first antenna part 11 between first end 111 and the second end 112 a bit.
The input 131 of switch sections 13 is connected with pumping signal end (not shown), the first output 132 of described switch sections 13 is connected with the second end 112 of the first antenna part 11, and the second output 133 of described switch sections 13 is connected with the second end 122 of the second antenna part 12.
Under the first mode of operation, described switch sections 13 provides signal path between described pumping signal end and the second end 112 of described the first antenna part 11,, described switch sections 13 is received its input 131 pumping signal from described pumping signal termination is delivered to the second end 112 of described the first antenna part 11 via the first output 132, in the case, comprise whole length of the first antenna part 11 according to the practical operation part of the antenna 1 of the embodiment of the present invention, from first end 111 to second ends 112 of the first antenna part 11.
Under the second mode of operation, described switch sections 13 provides signal path between described pumping signal end and the second end 122 of described the second antenna part 12, , described switch sections 13 is received its input 131 pumping signal from described pumping signal termination is delivered to the second end 122 of described the second antenna part 12 via the second output 133, in the case, comprise the partial-length of whole length and first antenna part 11 of the second antenna part 12 according to the practical operation part of the antenna 1 of the embodiment of the present invention, comprise particularly the length from M point to its first end 111 in whole length of the second antenna part 12 and the first antenna part 11.Can select the position that in the first antenna part 11, M is ordered according to actual conditions.In one example, the second end 112 of very close described the first antenna part 11 of described M point, that is to say, the length of the first antenna part 11 from M point to first end 111 is no better than whole length of the first antenna part 11.
According to the embodiment of the present invention, described the first antenna part 11 can be arranged on support, can be similar to conventional Antenna Design, and described the second antenna part 12 can be etched in above the PCB of support below, be similar to transmission line, and below the empty regions of antenna.
According to the embodiment of the present invention, by the operation of described switch sections 13, first still pumping signal is sent to the first antenna part again via the second antenna part by selecting directly pumping signal to be sent to the first antenna part, can realize the switching of two different radiation frequency ranges, for example, the centre frequency of two radiation frequency ranges can be respectively 880MHz and 750MHz.
According to the embodiment of the present invention, under the first mode of operation and the second mode of operation, change antenna length by basis, under the first mode of operation, can obtain first day line length, and described antenna operation is in the first frequency range, under the second mode of operation, can obtain the second antenna length, and described antenna operation is in the second frequency range, and first day line length is shorter than the second antenna length.Because antenna length and antenna operation frequency are inverse ratio, the first frequency range therefore obtaining under the first mode of operation is higher than obtain the second frequency range under described the second mode of operation.
In a concrete example, described the first frequency range can be that 824MHz-960MHz and its centre frequency can be 880MHz, and described the second frequency range can be that 698MHz-820MHz and its centre frequency can be 750MHz.
According to the embodiment of the present invention, after having selected radiation frequency range by described switch sections 13, can also select two kinds of different couplings for selected radiation frequency by described switch sections 13, thereby can more described the first frequency range (higher frequency band) be divided into switchable two frequency sub-band 824MHz-894MHz and 880MHz-960MHz, and can more described the first frequency range (higher frequency band) be divided into switchable two frequency sub-band 698MHz-760MHz and 760MHz-820MHz.
According to the embodiment of the present invention, in one example, in Fig. 4, in the second antenna part 12, the width of each section is identical, and in Fig. 4, in the first antenna part 11, the width of each section is identical, and the width of the width of the first antenna part 11 and the second antenna part 12 can be similar and different.But, the invention is not restricted to this.
The first embodiment
Fig. 5 shows according to the structural representation of the first compatible portion 134 shown in Fig. 3 of first embodiment of the invention.
As shown in Figure 5, described the first compatible portion 134 comprises the first sub-switch 341, the first sub-compatible portion 342 and the second sub-compatible portion 343.
The first end 3411 of described the first sub-switch 341 connects the first end 1341 of described the first compatible portion 134, and the second end 3422 of described the first sub-compatible portion 342 is connected the second end 1342 of described the first compatible portion 134 with the second end 3432 of the second sub-compatible portion 343.
The second end 3412 of the first end 3421 of described the first sub-compatible portion 342 and described the first sub-switch 341 is connected, and the 3rd end 3413 of the first end 3431 of described the second sub-compatible portion 343 and described the first sub-switch 341 is connected.
In the case, described the first mode of operation can also comprise the first child-operation state and the second child-operation state.
Under described the first child-operation state, the first end 1361 of described diverter switch 136 connects the described input 131 of described switch sections 13, the second end 1362 of described diverter switch 136 connects the first end 1341 of described the first compatible portion 134, electrical connection between described its first end 1361 of diverter switch 136 conductings and its second end 1362, the first end 1341 of described the first compatible portion 134 connects the first end 3411 of described the first sub-switch 341, the second end 3412 of described the first sub-switch 341 connects the first end 3421 of described the first sub-compatible portion 342, electrical connection between described first sub-its first end 3411 of switch 341 conductings and its second end 3412, the second end 3422 of described the first sub-compatible portion 342 connects the second end 1342 of described the first compatible portion 134, described the first sub-compatible portion 342 is worked thus, operate in the first frequency sub-band in the first frequency range according to the described antenna 1 of the embodiment of the present invention.
Under described the second child-operation state, the first end 1361 of described diverter switch 136 connects the described input 131 of described switch sections 13, the second end 1362 of described diverter switch 136 connects the first end 1341 of described the first compatible portion 134, electrical connection between described its first end 1361 of diverter switch 136 conductings and its second end 1362, the first end 1341 of described the first compatible portion 134 connects the first end 3411 of described the first sub-switch 341, the 3rd end 3413 of described the first sub-switch 341 connects the first end 3431 of described the second sub-compatible portion 343, electrical connection between described first sub-its first end 3411 of switch 341 conductings and Qi tri-ends 3413, the second end 3422 of described the first sub-compatible portion 342 connects the second end 1342 of described the first compatible portion 134, described the second sub-compatible portion 343 is worked thus, operate in the second frequency sub-band in the first frequency range according to the described antenna 1 of the embodiment of the present invention.
Fig. 6 shows the first sub-compatible portion 342 shown in Fig. 5 and the structural representation of the second sub-compatible portion 343.
As shown in Figure 6, described the first sub-compatible portion 342 comprises the first impedance Z 1, and the first end A1 of described the first impedance Z 1 is connected with the first end 3421 of described the first sub-compatible portion 342 and the second end 3422, and the second end B1 ground connection of described the first impedance Z 1.
Described the second sub-compatible portion 343 comprises the second impedance Z 2 and the 3rd impedance Z 3, the first end A2 of described the second impedance Z 2 is connected with the first end 3431 of described the second sub-compatible portion 343, the second end B2 of described the second impedance Z 2 is connected with the second end 3432 of described the second sub-compatible portion 343 with the first end A3 of described the 3rd impedance Z 3, the second end B3 ground connection of described the 3rd impedance Z 3.
In a concrete example, described the first impedance Z 1 has the first inductance value, and described the second impedance Z 2 has the first capacitance, and described the 3rd impedance Z 3 has the second inductance value, and described the first inductance value and described the second inductance value can be identical or different.
Fig. 7 shows the structural representation of the second compatible portion 135 shown in Fig. 3.
As shown in Figure 7, described the second compatible portion 135 comprises the second sub-switch 351, the 3rd sub-compatible portion 352 and the 4th sub-compatible portion 353.
The first end 3511 of described the second sub-switch 351 connects the first end 1351 of described the second compatible portion 135, and the second end 3522 of described the 3rd sub-compatible portion 352 is connected the second end 1352 of described the second compatible portion 135 with the second end 3532 of the 4th sub-compatible portion 353.
The second end 3512 of the first end 3521 of described the 3rd sub-compatible portion 352 and described the second sub-switch 351 is connected, and the 3rd end 3513 of the first end 3531 of described the 4th sub-compatible portion 353 and described the second sub-switch 351 is connected.
In the case, described the second mode of operation can also comprise the 3rd child-operation state and the 4th child-operation state.
Under described the 3rd child-operation state, the first end 1361 of described diverter switch 136 connects the described input 131 of described switch sections 13, the 3rd end 1363 of described diverter switch 136 connects the first end 1351 of described the second compatible portion 135, electrical connection between described its first end 1361 of diverter switch 136 conductings and Qi tri-ends 1363, the first end 1351 of described the second compatible portion 135 connects the first end 3511 of described the second sub-switch 351, the second end 3512 of described the second sub-switch 351 connects the first end 3521 of described the 3rd sub-compatible portion 352, electrical connection between described second sub-its first end 3511 of switch 351 conductings and its second end 3512, the second end 3522 of described the 3rd sub-compatible portion 352 connects the second end 1352 of described the second compatible portion 135, described the 3rd sub-compatible portion 352 is worked thus, operate in the 3rd frequency sub-band in the second frequency range according to the described antenna 1 of the embodiment of the present invention.
Under described the 4th child-operation state, the first end 1361 of described diverter switch 136 connects the described input 131 of described switch sections 13, the 3rd end 1363 of described diverter switch 136 connects the first end 1351 of described the second compatible portion 135, electrical connection between described its first end 1361 of diverter switch 136 conductings and Qi tri-ends 1363, the first end 1351 of described the second compatible portion 135 connects the first end 3511 of described the second sub-switch 351, the second end 3512 of described the second sub-switch 351 connects the first end 3531 of described the 4th sub-compatible portion 353, electrical connection between described second sub-its first end 3511 of switch 351 conductings and Qi tri-ends 3513, the second end 3532 of described the 4th sub-compatible portion 353 connects the second end 1352 of described the second compatible portion 135, described the 4th sub-compatible portion 353 is worked thus, operate in the 4th frequency sub-band in the second frequency range according to the described antenna 1 of the embodiment of the present invention.
Fig. 8 shows the 3rd sub-compatible portion 352 shown in Fig. 7 and the structural representation of the 4th sub-compatible portion 353.
As shown in Figure 8, described the 3rd sub-compatible portion 353 comprises the 4th impedance Z 4, and the first end A4 of described the 4th impedance Z 4 is connected with the second end 3522 with the first end 3521 of described the 3rd sub-compatible portion 353, and the second end B4 ground connection of described the 4th impedance Z 4.
Described the 4th sub-compatible portion 354 comprises the 5th impedance Z 5 and the 6th impedance Z 6, the first end A5 of described the 5th impedance Z 5 is connected with the first end 3531 of described the 4th sub-compatible portion 354, the second end B5 of described the 5th impedance Z 5 is connected with the second end 3532 of described the 4th sub-compatible portion 353 with the first end A6 of described the 6th impedance Z 6, the second end B6 ground connection of described the 6th impedance Z 6.
In a concrete example, described the 4th impedance Z 4 has the 3rd inductance value, and described the 5th impedance Z 5 has the second capacitance, and described the 6th impedance Z 6 has the 4th inductance value, and described the 3rd inductance value and described the 4th inductance value can be identical or different.
In another concrete example, described the first inductance value is different from described the 3rd inductance value, and described the second inductance value is different from described the 4th inductance value, and described the first capacitance is different from described the second capacitance.
Although described diverter switch 136 comprises first end, the second end and the 3rd end in the above embodiments, but should be appreciated that the invention is not restricted to diverter switch 136 described in this also can comprise first end and the second end, the second end can switch the first end 1341 that is connected to described the first compatible portion 134 or the first end 1351 that is connected to described the second compatible portion 135.Similarly, described the first sub-switch 341 also can comprise first end and the second end, and the second end can switch the first end 3421 that is connected to described the first sub-compatible portion 342 or the first end 3431 that is connected to described the second sub-compatible portion 343; Described the second sub-switch 351 also can comprise first end and the second end, and the second end can switch the first end 3521 that is connected to described the 3rd sub-compatible portion 352 or the first end 3531 that is connected to described the 4th sub-compatible portion 353.According to concrete application, can select the specific implementation form of described diverter switch, described the first sub-switch, described the second sub-switch.
According to first embodiment of the invention, by antenna and internal structure thereof shown in Fig. 3 and Fig. 5-8, by the operation of described switch sections 13, first still pumping signal is sent to the first antenna part again via the second antenna part by selecting directly pumping signal to be sent to the first antenna part, can under the first mode of operation and the second mode of operation, obtain different antenna lengths, thereby realize the switching of two different radiation frequency ranges; Then, be two kinds of different couplings of selected radiation Frequency Band Selection by described switch sections 13, thereby can obtain two frequency sub-band for each radiation frequency range.
For the full frequency band of realizing LTE covers, for example, described the first frequency range can be 824MHz-960MHz, described the first frequency sub-band can be 880MHz-960MHz, described the second frequency sub-band can be 824MHz-894MHz, described the second frequency range can be 698MHZ-820MHZ, and described the 3rd frequency sub-band can be 740MHz-820MHz, and described the 4th frequency sub-band can be 698MHZ-760MHZ.
The second embodiment
Fig. 9 shows according to the structural representation of the first compatible portion 134 shown in Fig. 3 of second embodiment of the invention.
As shown in Figure 9, described the first compatible portion 134 can comprise the first impedance Z Z1, the second impedance Z Z2 and the first sub-switch SW 1, the second end BZ2 of the first end AZ1 of described the first impedance Z Z1, described the second impedance is connected with the second end 1342 of described the first compatible portion 134 with the second end of described the first sub-switch SW 1, the second end ground connection of described the first impedance Z Z1, the first end AZ2 of described the second impedance Z Z2 is connected with the first end 1341 of described the first compatible portion 134 with the first end of described the first sub-switch SW.
Described the first mode of operation also can comprise the first child-operation state and the second child-operation state.
Under described the first child-operation state, described the first sub-switch SW 1 conducting, first frequency sub-band of described antenna operation in the first frequency range; Under described the second child-operation state, described the first sub-switch SW 1 disconnects, second frequency sub-band of described antenna operation in the first frequency range.
Figure 10 shows according to the structural representation of the second compatible portion 135 shown in Fig. 3 of second embodiment of the invention.
Described the second compatible portion 135 comprises the 3rd impedance Z Z3, the 4th impedance Z Z4 and the second sub-switch SW 2, the first end AZ3 of described the 3rd impedance Z Z3, the second end BZ4 of described the 4th impedance Z Z4 and the second end of described the second sub-switch SW 2 and the second end 1352 of described the second compatible portion 135 are connected, the second end ground connection of described the 3rd impedance Z Z3, the first end AZ4 of described the 4th impedance Z Z4 is connected with the first end 1351 of described the second compatible portion 135 with the first end of described the second sub-switch SW 2.
Described the second mode of operation also can comprise the 3rd child-operation state and the 4th child-operation state;
Under described the 3rd child-operation state, described the second sub-switch SW 2 conductings, three frequency sub-band of described antenna operation in the second frequency range; Under described the 4th child-operation state, described the second sub-switch SW 2 disconnects, four frequency sub-band of described antenna operation in the second frequency range.
In one example, described the first impedance has the first inductance value, and described the second impedance has the first capacitance, and described the 3rd impedance has the second inductance value, and described the 4th impedance has the second capacitance.Advantageously, described the first inductance value is different with described the second inductance value, and described the first capacitance is different with described the second capacitance.
According to second embodiment of the invention, by antenna and internal structure thereof shown in Fig. 3, Fig. 9 and Figure 10, by the operation of described switch sections 13, first still pumping signal is sent to the first antenna part again via the second antenna part by selecting directly pumping signal to be sent to the first antenna part, can under the first mode of operation and the second mode of operation, obtain different antenna lengths, thereby realize the switching of two different radiation frequency ranges; Then, be two kinds of different couplings of selected radiation Frequency Band Selection by described switch sections 13, thereby can obtain two frequency sub-band for each radiation frequency range.
For the full frequency band of realizing LTE covers, for example, described the first frequency range can be 824MHz-960MHz, described the first frequency sub-band can be 880MHz-960MHz, described the second frequency sub-band can be 824MHz-894MHz, described the second frequency range can be 698MHZ-820MHZ, and described the 3rd frequency sub-band can be 740MHz-820MHz, and described the 4th frequency sub-band can be 698MHZ-760MHZ.
Figure 11 illustrates the standing wave pattern in each frequency range according to the antenna of the embodiment of the present invention, and Figure 12 illustrates according to the antenna of the embodiment of the present invention at 700MHz to the efficiency chart between the frequency range of 960MHz.
By the input of described switch sections 13 131 being connected with the first output 132 and the first compatible portion 134 in described switch sections 13 provides the impedance of mating with described the first frequency sub-band (880MHz-960MHz), can obtain the standing wave curve 1 in Figure 11, it can obtain good standing wave on the first frequency sub-band, as the 4th crest from left to right in Figure 11, correspondingly can on the first frequency sub-band, obtain good antenna overall efficiency, as the 4th crest from left to right in Figure 12.
By the input of described switch sections 13 131 being connected with the first output 132 and the first compatible portion 134 in described switch sections 13 provides the impedance of mating with described the second frequency sub-band (824MHz-894MHz), can obtain the standing wave curve 2 in Figure 11, it can obtain good standing wave on the second frequency sub-band, as the 3rd crest from left to right in Figure 11, correspondingly can on the second frequency sub-band, obtain good antenna overall efficiency, as the 3rd crest from left to right in Figure 12.
By providing the impedance of mating with described the 3rd frequency sub-band (740MHz-820MHz) by the input of described switch sections 13 131 with the second output 133 and the second compatible portion 135 in described switch sections 13, can obtain the standing wave curve 3 in Figure 11, it can obtain good standing wave on the 3rd frequency sub-band, as second crest from left to right in Figure 11, correspondingly can on the 3rd frequency sub-band, obtain good antenna overall efficiency, as second crest from left to right in Figure 12.
By providing the impedance of mating (698MHZ-760MHZ) with described the 4th frequency sub-band by the input of described switch sections 13 131 with the second output 133 and the second compatible portion 135 in described switch sections 13, can obtain the standing wave curve 4 in Figure 11, it can obtain good standing wave on the 4th frequency sub-band, as first crest from left to right in Figure 11, correspondingly can on the 4th frequency sub-band, obtain good antenna overall efficiency, as first crest from left to right in Figure 12.
Should be appreciated that, first embodiment of the invention and the second embodiment can use separately or also can be combined with.
According to the embodiment of the present invention, by first selecting one of two antenna lengths to select one of two different radiation frequency ranges and then to select one of two matched impedances of selected radiation frequency range to select one of two frequency sub-band in selected radiation frequency range, can realize the switching of four frequency sub-band, thereby further realize all standing of LTE frequency range.In addition,, according to the embodiment of the present invention, the bandwidth of each frequency sub-band, within 80MHz, therefore can guarantee the radiation efficiency in each frequency sub-band according to the antenna of the embodiment of the present invention, correspondingly also can guarantee the overall efficiency of antenna.
Describe each embodiment of the present invention in the above in detail.But, it should be appreciated by those skilled in the art that without departing from the principles and spirit of the present invention, can carry out various modifications to these embodiment, combination or sub-portfolio, and such modification should fall within the scope of the present invention.
Claims (10)
1. an antenna, for portable set, comprising:
The first antenna part and the second antenna part, wherein, the first end of described the first antenna part is as antenna transmission end, the first end of described the second antenna part and being a bit connected in described the first antenna part;
Switch sections, for being connected with pumping signal end, and under the first mode of operation, between described pumping signal end and the second end of described the first antenna part, provide signal path, under the second mode of operation, between described pumping signal end and the second end of described the second antenna part, provide signal path.
2. antenna as claimed in claim 1, wherein, described switch sections comprises input, the first output and the second output;
Described input is connected with described pumping signal end, and described the first output is connected with the second end of described the first antenna part, and described the second output is connected with the second end of described the second antenna part;
Described switch sections also comprises the first compatible portion being located between described input and described the first output, be located at the second compatible portion between described input and described the second output, and diverter switch, the first end of described diverter switch connects the described input of described switch sections, the second end of described diverter switch connects the first end of described the first compatible portion, the 3rd end of described switch connects the first end of described the second compatible portion, the second end of described the first compatible portion connects described first output of described switch sections, the second end of described the second compatible portion connects described second output of described switch sections,
Under described the first mode of operation, described the first compatible portion work, described antenna operation is in the first frequency range; And
Under described the second mode of operation, described the second compatible portion work, described antenna operation is in the second frequency range.
3. antenna as claimed in claim 2, wherein,
Described the first compatible portion comprises the first sub-switch, the first sub-compatible portion and the second sub-compatible portion;
The first end of described the first sub-switch connects the first end of described the first compatible portion;
The second end of described the first sub-compatible portion is connected the second end of described the first compatible portion with the second end of the second sub-compatible portion;
The second end of the first end of described the first sub-compatible portion and described the first sub-switch is connected, and the 3rd end of the first end of described the second sub-compatible portion and described the first sub-switch is connected;
Described the first mode of operation comprises the first child-operation state and the second child-operation state;
Under described the first child-operation state, described the first sub-compatible portion work, first frequency sub-band of described antenna operation in the first frequency range;
Under described the second child-operation state, described the second sub-compatible portion work, second frequency sub-band of described antenna operation in the first frequency range.
4. antenna as claimed in claim 3, wherein,
Described the first sub-compatible portion comprises the first impedance, and the first end of described the first impedance is connected with the second end with the first end of described the first sub-compatible portion, and the second end ground connection of described the first impedance;
Described the second sub-compatible portion comprises the second impedance and the 3rd impedance, the first end of described the second impedance is connected with the first end of described the second sub-compatible portion, the second end of described the second impedance is connected with the first end of described the 3rd impedance with the second end of described the second sub-compatible portion and is connected, the second end ground connection of described the 3rd impedance.
5. antenna as claimed in claim 4, wherein,
Described the second compatible portion comprises the second sub-switch, the 3rd sub-compatible portion and the 4th sub-compatible portion;
The first end of described the second sub-switch connects the first end of described the second compatible portion;
The second end of described the 3rd sub-compatible portion is connected the second end of described the second compatible portion with the second end of the 4th sub-compatible portion;
The second end of the first end of described the 3rd sub-compatible portion and described the second sub-switch is connected, and the 3rd end of the first end of described the 4th sub-compatible portion and described the second sub-switch is connected;
Described the second mode of operation comprises the 3rd child-operation state and the 4th child-operation state;
Under described the 3rd child-operation state, described the 3rd sub-compatible portion work, three frequency sub-band of described antenna operation in the second frequency range;
Under described the 4th child-operation state, described the 4th sub-compatible portion work, four frequency sub-band of described antenna operation in the second frequency range.
6. antenna as claimed in claim 5, wherein,
Described the 3rd sub-compatible portion comprises the 4th impedance, and the first end of described the 4th impedance is connected with the second end with the first end of described the 3rd sub-compatible portion, and the second end ground connection of described the 4th impedance;
Described the 4th sub-compatible portion comprises the 5th impedance and the 6th impedance, the first end of described the 5th impedance is connected with the first end of described the 4th sub-compatible portion, the second end of described the 5th impedance is connected with the first end of described the 6th impedance with the second end of described the 4th sub-compatible portion and is connected, the second end ground connection of described the 6th impedance.
7. antenna as claimed in claim 2, wherein,
Described the first impedance has the first inductance value, and described the second impedance has the first capacitance, and described the 3rd impedance has the second inductance value,
Described the 4th impedance has the 3rd inductance value, and described the 5th impedance has the second capacitance, and described the 6th impedance has the 4th inductance value.
8. antenna as claimed in claim 2, wherein,
Described the first compatible portion comprises the first impedance, the second impedance and the first sub-switch, the first end of described the first impedance, the second end of described the second impedance and the second end of described the first sub-switch and the second end of described the first compatible portion are connected, the second end ground connection of described the first impedance, the first end of the first end of described the second impedance and described the first sub-switch is connected with the first end of described the first compatible portion;
Described the first mode of operation comprises the first child-operation state and the second child-operation state;
Under described the first child-operation state, described the first sub-switch conduction, first frequency sub-band of described antenna operation in the first frequency range;
Under described the second child-operation state, described the first sub-switch disconnects, second frequency sub-band of described antenna operation in the first frequency range.
9. antenna as claimed in claim 8, wherein,
Described the second compatible portion comprises the 3rd impedance, the 4th impedance and the second sub-switch, first end, the second end of described the 4th impedance and second end of described the second sub-switch of described the 3rd impedance are connected with the second end of described the second compatible portion, the second end ground connection of described the 3rd impedance, the first end of the first end of described the 4th impedance and described the second sub-switch is connected with the first end of described the second compatible portion;
Described the second mode of operation comprises the 3rd child-operation state and the 4th child-operation state;
Under described the 3rd child-operation state, described the second sub-switch conduction, three frequency sub-band of described antenna operation in the second frequency range;
Under described the 4th child-operation state, described the second sub-switch disconnects, four frequency sub-band of described antenna operation in the second frequency range.
10. antenna as claimed in claim 9, wherein,
Described the first impedance has the first inductance value, and described the second impedance has the first capacitance, and described the 3rd impedance has the second inductance value, and described the 4th impedance has the second capacitance.
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| CN201410062346.4A CN103779670A (en) | 2014-02-24 | 2014-02-24 | Antenna |
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| CN201410062346.4A CN103779670A (en) | 2014-02-24 | 2014-02-24 | Antenna |
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Application publication date: 20140507 |