CN105826652A - Antenna device of mobile terminal and mobile terminal - Google Patents
Antenna device of mobile terminal and mobile terminal Download PDFInfo
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- CN105826652A CN105826652A CN201510740454.7A CN201510740454A CN105826652A CN 105826652 A CN105826652 A CN 105826652A CN 201510740454 A CN201510740454 A CN 201510740454A CN 105826652 A CN105826652 A CN 105826652A
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- radiant body
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
- H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
- H01Q1/241—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM
- H01Q1/242—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use
- H01Q1/243—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use with built-in antennas
Abstract
The present invention provides a mobile terminal of a mobile terminal and the mobile terminal. The antenna device comprises a first antenna radiator, a feed-in device, an antenna feed, a first switch module, a second switch module and a controller. The first antenna radiator is composed of a first antenna radiator branch and a second antenna radiator branch, wherein the first antenna radiator branch and the second antenna radiator branch are symmetrical. The antenna feed is respectively connected with the feed-in device and the main board of the mobile terminal. The first switch module is respectively connected with the first antenna radiator branch and the main board. The second switch module and the first switch module are symmetrically arranged. The second switch module is respectively connected with the second antenna radiator branch and the main board. The controller is connected with the first switch module and the second switch module, respectively. The controller controls the first switch module to be switched on and the second switch module to be switched off, or controls the first switch module to be switched off and the second switch module to be switched on. According to the technical scheme of the invention, only one antenna feed point and two switches are required to balance the fingerprint function at left and right ends. Therefore, the device is low in cost, small in switching loss and small in end-fingerprint absorption. Moreover, the Grasp of Dead problem can be solved.
Description
Technical field
The present invention relates to technical field of mobile terminals, particularly relate to the antenna assembly of a kind of mobile terminal and a kind of mobile terminal.
Background technology
In recent years, along with the mobile terminal with metal appearance is popularized, the antenna of mobile terminal often needs to utilize metal parts to realize, this makes number of people hands significantly increase the impact of antenna, the resonant frequency of antenna not only can be made after adding head and/or hands significantly to offset, cause severe mismatch, also can dramatically increase the absorption loss of antenna simultaneously, the problem that " dead holds " very likely occurs in antenna.After " dead holds " refers to hold antenna, the situation of mobile terminal signal fast-fading.
At present, Ge great operator and mobile terminal producer all take much count of mobile terminal wireless performance under number of people hand model, and the wireless performance of left and right head fingerprint is proposed specific requirement.But the difficult problem that the wireless performance difference how balancing left and right head fingerprint is still in industry.
In traditional antenna scheme, antenna feed point is positioned at certain side of mainboard, causes left and right head fingerprint performance there are differences, and generally, the left and right head fingerprint poor performance of program antenna is abnormal more than 3dB, can reach 10dB time serious.
In correlation technique, as shown in Figure 1, for traditional antenna scheme, a kind of improving countermeasure is proposed, in the program, same antenna radiator is by switching the antenna feed point (the first feed point 41 ', the second feed point 42 ') of both sides, thus realize head fingerprint performance difference about balance, promote an end fingerprint performance poor in traditional antenna.
But, the improving countermeasure in correlation technique there is also following defect:
Owing to using double-fed point (the first feed point 41 ', the second feed point 42 ') feed-in, need to additionally increase the match circuit (the first match circuit, the second match circuit) that three switches (the first switch 1 ', second switch 2 ', the 3rd switch 3 ') are similar with two-way, not only increase cost, also add and realize difficulty and debugging difficulty.Also bring along bigger switching loss simultaneously, be first that number of switches increases, cause switching loss to increase；Next to that switch is directly connected at antenna feed point, connect with match circuit the most again, cause the loss of switch to significantly increase.This is because by the DISTRIBUTION OF CURRENT of antenna it is recognised that electric current near antenna feed point maximum (antenna end electric current is minimum), then loss is big.
Summary of the invention
In view of the above problems, the purpose of the embodiment of the present invention is to provide the antenna assembly of a kind of mobile terminal and corresponding a kind of mobile terminal, high with the improving countermeasure cost solved in correlation technique, it is achieved difficulty and debugging difficulty are big, and the problem that switching loss is big.
In order to solve the problems referred to above, the embodiment of the invention discloses the antenna assembly of a kind of mobile terminal, including: first antenna radiant body, described first antenna radiant body includes first antenna radiant body branch and the second antenna radiator branch of symmetry；Feedthrough, described feedthrough is the wire being connected with described first antenna radiant body, or described feedthrough and described first antenna radiant body slot-coupled；Antenna feed, described antenna feed respectively with the mainboard of described feedthrough and mobile terminal be connected；First switch module, described first switch module respectively with described first antenna radiant body branch and described mainboard be connected；Second switch module, described second switch module is symmetrical with described first switch module, described second switch module respectively with described second antenna radiator branch and described mainboard be connected；Controller, described controller is connected with described first switch module and described second switch module respectively, described controller controls described first switch module Guan Bi, described second switch module disconnects, or controls described first switch module disconnection, described second switch module Guan Bi.
In order to solve the problems referred to above, the embodiment of the invention also discloses a kind of mobile terminal, including mainboard and the antenna assembly of described mobile terminal, be connected the antenna assembly of described mobile terminal and described mainboard.
The embodiment of the present invention includes advantages below: arrange feedthrough and first antenna radiant body slot-coupled, or feedthrough is the wire being connected with first antenna radiant body, antenna feed respectively with the mainboard of feedthrough and mobile terminal be connected, first switch module respectively with the first antenna radiant body branch of first antenna radiant body and mainboard be connected, second switch module is symmetrical with the first switch module, second switch module respectively with the second antenna radiator branch and mainboard be connected, and then control the first switch module Guan Bi by controller, second switch module disconnects, or control the first switch module disconnection, second switch module closes.Thus only need an antenna feed point (between antenna feed and first antenna radiant body) and two switches, head fingerprint function about balance can be realized, low cost, and reduce switching loss and the absorption of head fingerprint, reduce design difficulty and debugging difficulty, and the problem that " dead holds " can be solved.
Accompanying drawing explanation
Fig. 1 is the structural representation of the improving countermeasure in correlation technique；
Fig. 2 is the structured flowchart of the antenna assembly of the mobile terminal of the embodiment of the present invention；
Fig. 3 is the structural representation of the antenna assembly of the mobile terminal of one embodiment of the invention；
Fig. 4 is the structural representation of the antenna assembly of the mobile terminal of one embodiment of the invention；
Fig. 5 is the structural representation of the antenna assembly of the mobile terminal of one embodiment of the invention；
Fig. 6 is the antenna standing wave schematic diagram of the antenna assembly of the mobile terminal of one embodiment of the invention；
Fig. 7 is the offset direction schematic diagram of the antenna frequencies of the antenna assembly of the mobile terminal of one embodiment of the invention；
Fig. 8 is the structural representation of the antenna assembly of the mobile terminal of one embodiment of the invention；
Fig. 9 is the offset direction schematic diagram of the antenna frequencies of the antenna assembly of the mobile terminal of one embodiment of the invention；
Figure 10 is the structural representation of the antenna assembly of the mobile terminal of one embodiment of the invention；
Figure 11 is the offset direction schematic diagram of the antenna frequencies of the antenna assembly of the mobile terminal of one embodiment of the invention；
Figure 12 is the structural representation of the antenna assembly of the mobile terminal of one embodiment of the invention；
Figure 13 is the structural representation of the antenna assembly of the mobile terminal of one embodiment of the invention；
Figure 14 is the structural representation of the antenna assembly of the mobile terminal of one embodiment of the invention；
Figure 15 is the structural representation of the antenna assembly of the mobile terminal of one embodiment of the invention；
Figure 16 is the structural representation of the antenna assembly of the mobile terminal of one embodiment of the invention；
Figure 17 is the offset direction schematic diagram of the antenna frequencies of the antenna assembly of the mobile terminal of one embodiment of the invention；
Figure 18 is the structural representation of the antenna assembly of the mobile terminal of another embodiment of the present invention；
Figure 19 is the structural representation of the antenna assembly of the mobile terminal of one embodiment of the invention；
Figure 20 is the structural representation of the antenna assembly of the mobile terminal of one embodiment of the invention；
Figure 21 is the antenna standing wave schematic diagram of the antenna assembly of the mobile terminal of one embodiment of the invention；
Figure 22 is the structural representation of the antenna assembly of the mobile terminal of one specific embodiment of the present invention；
Figure 23 is the data and curves schematic diagram of the antenna assembly of the mobile terminal of one specific embodiment of the present invention；
Figure 24 is the data and curves schematic diagram of the antenna assembly of the mobile terminal of another specific embodiment of the present invention；
Figure 25 is the structural representation of the antenna assembly of the mobile terminal of one embodiment of the invention；
Figure 26 is the structural representation of the antenna assembly of the mobile terminal of one embodiment of the invention；
Figure 27 is the offset direction schematic diagram of the antenna frequencies of the antenna assembly of the mobile terminal of one embodiment of the invention.
Detailed description of the invention
Understandable for enabling the above-mentioned purpose of the present invention, feature and advantage to become apparent from, the present invention is further detailed explanation with detailed description of the invention below in conjunction with the accompanying drawings.
The present invention be inventor based on the finding that and research and propose:
Improving countermeasure in correlation technique, core concept is to change the position of antenna feed point, thus improve left and right head fingerprint performance, although the position changing antenna feed point has the effect of head fingerprint performance about improvement, but change antenna end position, head fingerprint performance about equally improving, and improve effect and become apparent from.
Further study show that, " dead holds " problem is mainly caused when certain side (the usually antenna end) in mobile terminal gap is close in the thumb side of hands, therefore if the position of antenna end can be changed, the problem that " dead hold " can be solved.
Therefore, one of core idea of the embodiment of the present invention is, changes antenna end position by the different parts of switching antenna radiator, thus improves left and right head fingerprint performance, and the problem solving " dead holds ".
With reference to Fig. 2, it is shown that the structured flowchart of the antenna assembly 10 of the mobile terminal of the embodiment of the present invention, specifically can include such as lower module: first antenna radiant body 1, antenna feed the 2, first switch module 3, second switch module 4, controller 5 and feedthrough 6.Wherein, first antenna radiant body 1 includes first antenna radiant body branch 11 and the second antenna radiator branch 12 of symmetry, first antenna radiant body branch 11 and the second antenna radiator branch 12 can be symmetrical relative to mobile terminal, now, first antenna radiant body branch 11 can be arranged on the left side of mobile terminal, second antenna radiator branch 12 can be arranged on the right of mobile terminal, and wherein, mobile terminal can be mobile phone, navigator, palm PC etc..Feedthrough 6 is the wire being connected with first antenna radiant body 1, or feedthrough 6 and first antenna radiant body 1 slot-coupled.Antenna feed 2 is connected with the mainboard ground 20 of feedthrough 6 and mobile terminal respectively, and now, antenna feed point is between antenna feed 2 and feedthrough 6.First switch module 3 is connected with first antenna radiant body branch 11 and mainboard ground 20 respectively.Second switch module 4 and the first switch module 3 are symmetrical, and second switch module 4 is connected with the second antenna radiator branch 12 and mainboard ground 20 respectively.Controller 5 is connected with the first switch module 3 and second switch module 4 respectively, and controller 5 controls that the first switch module 3 closes, second switch module 4 disconnects, or controls that the first switch module 3 disconnects, second switch module 4 closes.
Wherein, by the signal intensity that detection antenna assembly 10 receives, controller 5 can control that the first switch module 3 closes, second switch module 4 disconnects, or controls that the first switch module 3 disconnects, second switch module 4 closes.
It should be noted that, the shape of first antenna radiant body branch 11 and the second antenna radiator branch 12 can be flexible and changeable, both can be PIFA (PlanarInvertedF-shapedAntenna, planar inverted F-antenna) antenna, IFA (InvertedF-shapedAntenna, inverted-F antenna) antenna, Monopole (one pole) antenna or LOOP (annular) antenna etc., it is also possible to be the multiple resonant structures such as G type or F type.Additionally, it should be noted that, the antenna assembly 10 of the mobile terminal in the embodiment of the present invention is applicable not only to the mobile terminal of conventional plastic shell, is equally applicable to mobile terminal and the mobile terminal of other shells of the metal shells such as metal frame shell, full metal jacket or back metal battery cover shell.
Preferably, in one embodiment of the invention, first switch module 3 can include the first single pole multiple throw 31 such as SP3T switch, the first filter circuit 32 and the second filter circuit 33, and second switch module 4 includes the second single pole multiple throw 41 such as SP3T switch, the 3rd filter circuit 42 and the 4th filter circuit 43.Wherein, the common port of the first single pole multiple throw 31 is connected with first antenna radiant body branch 11, and the first switch terminal of the first single pole multiple throw 31 is unsettled, and the control end of the first single pole multiple throw 31 is connected with controller 5.First filter circuit 32 is connected with the second switch terminal and the mainboard ground 20 of the first single pole multiple throw 31 respectively.Second filter circuit 33 is connected with the 3rd switch terminal and the mainboard ground 20 of the first single pole multiple throw 31 respectively.Common port and the second antenna radiator branch 12 of the second single pole multiple throw 41 are connected, and the first switch terminal of the second single pole multiple throw 41 is unsettled, and the control end of the second single pole multiple throw 41 is connected with controller 5.3rd filter circuit 42 is connected with the second switch terminal and the mainboard ground 20 of the second single pole multiple throw 41 respectively.4th filter circuit 43 is connected with the 3rd switch terminal and the mainboard ground 20 of the second single pole multiple throw 41 respectively.Wherein, when the first single pole multiple throw 31 switchs for SP3T for SP3T switch, the second single pole multiple throw 41, the antenna assembly 10 of mobile terminal is as shown in Figure 3.Controller 5 is the most not shown.
It should be noted that the filter circuit in the embodiment of the present invention can be single original paper, such as inductance or electric capacity, it is also possible to be labyrinth, such as frequency electing and passing circuit, it is also possible to be that other have the circuit of identity function, do not enumerate.Wherein, frequency electing and passing circuit can be equivalent to short circuit in low-frequency range, is equivalent to inductance or electric capacity at high band.It addition, the filter circuit in the embodiment of the present invention can be replaced with match circuit.
Wherein, in one embodiment of the invention, first filter circuit 32 and the 3rd filter circuit 42 can be direct circuit, second filter circuit 33 and the 4th filter circuit 43 can be inductance or electric capacity etc., or the first filter circuit 32 and the 3rd filter circuit 42 can be first frequency gating circuit M1, second filter circuit 33 and the 4th filter circuit 43 can be second frequency gating circuit M2, and first frequency gating circuit M1 is different from second frequency gating circuit M2.It should be noted that the first filter circuit 32 and the 3rd filter circuit 42 can also be inductance or electric capacity etc., the second filter circuit 33 and the 4th filter circuit 43 can also be direct circuit.
Wherein, with reference to Fig. 4, in one embodiment of the invention, the antenna assembly 10 of mobile terminal is positioned over mobile terminal lower end, first filter circuit 32 is direct circuit, controller 5 controls the common port of the first single pole multiple throw 31 and switches to the second switch terminal of the first single pole multiple throw 31, second switch terminal of the common port and the first single pole multiple throw 31 that i.e. control the first single pole multiple throw 31 is connected, first switch module 3 leads directly to, the common port simultaneously controlling the second single pole multiple throw 41 switches to the first switch terminal of the second single pole multiple throw 41, second switch module 4 is unsettled.Now, the radiofrequency signal that antenna feed 2 produces is shorted toward the energy of first antenna radiant body branch 11 transmission, energy transmission direction is as shown in arrow S in Fig. 4, radiofrequency signal will be transmitted toward the second antenna radiator branch 12, and by the second antenna radiator branch 12 emittance, antenna end is also at the second antenna radiator branch 12 side, and energy transmission direction is as shown in arrow T in Fig. 4.Now, corresponding left head fingerprint performance is good, and frequency deviation is few, the Resolving probiems of " dead holds ".Controller 5 is the most not shown.
In like manner, in another embodiment of the present invention, the antenna assembly 10 of mobile terminal is positioned over mobile terminal lower end, 3rd filter circuit 42 is direct circuit, controller 5 controls the common port of the first single pole multiple throw 31 and switches to the first switch terminal of the first single pole multiple throw 31, first switch module 3 is unsettled, and the common port simultaneously controlling the second single pole multiple throw 41 switches to the second switch terminal of the second single pole multiple throw 41, and second switch module 4 leads directly to.Now, the energy that the radiofrequency signal that antenna feed 2 produces is transmitted toward the second antenna radiator branch 12 is shorted, radiofrequency signal will be transmitted toward first antenna radiant body branch 11, and by first antenna radiant body branch 11 emittance, antenna end is also at first antenna radiant body branch 11 side.Now, corresponding right head fingerprint performance is good, and frequency deviation is few, the Resolving probiems of " dead holds ".
Further, in one embodiment of the invention, when the first filter circuit 32 and the 3rd filter circuit 42 are first frequency gating circuit M1, the antenna assembly 10 of mobile terminal is capable of producing two resonant frequencies of high and low frequency simultaneously, and at the two resonance frequencies, the antenna assembly 10 of mobile terminal is respectively provided with head fingerprint characteristic about balance.
nullSuch as，With reference to Fig. 5，The second switch terminal of the first single pole multiple throw 31 is switched to when controller 5 controls the common port of the first single pole multiple throw 31，The common port simultaneously controlling the second single pole multiple throw 41 switches to the first switch terminal of the second single pole multiple throw 41，First filter circuit 32 is equivalent to short circuit in low-frequency range，When high band is equivalent to inductance，The then radiofrequency signal of the low frequency that antenna feed 2 produces，To transmit toward the second antenna radiator branch 12，And the radiofrequency signal of high frequency is due to the inductance effect of the first filter circuit 32，Resonance will be produced in first antenna radiant body branch 11，So that the radiofrequency signal of low frequency is by the second antenna radiator branch 12 emittance，Energy transmission direction is as shown in arrow L in Fig. 5，The radiofrequency signal of high frequency is mainly by first antenna radiant body branch 11 emittance，Energy transmission direction is as shown in arrow H in Fig. 5.Now corresponding A (being used for distinguishing right-hand man) head fingerprint performance is good in low-frequency range, and it is good at high band to be likely to B (being used for distinguishing right-hand man) head fingerprint performance, when the antenna assembly 10 of mobile terminal is positioned over mobile terminal lower end, A is left, and B is right.As shown in Figure 6, wherein, f1 is the antenna resonant frequency of low-frequency range to corresponding antenna standing wave, and f2 is the antenna resonant frequency of high band.Controller 5 is the most not shown.
In like manner, the first switch terminal of the first single pole multiple throw 31 is switched to when controller 5 controls the common port of the first single pole multiple throw 31, the common port simultaneously controlling the second single pole multiple throw 41 switches to the second switch terminal of the second single pole multiple throw 41, 3rd filter circuit 42 is equivalent to short circuit in low-frequency range, when high band is equivalent to inductance, then the radiofrequency signal of low frequency will be transmitted toward first antenna radiant body branch 11, and the radiofrequency signal of high frequency is due to the inductance effect of the 3rd filter circuit 42, resonance will be produced in the second antenna radiator branch 12, so that the radiofrequency signal of low frequency is by first antenna radiant body branch 11 emittance, the radiofrequency signal of high frequency is mainly by the second antenna radiator branch 12 emittance.Now corresponding B head fingerprint performance is good in low-frequency range, and it is good at high band to be likely to A head fingerprint performance.
Specifically, when in the antenna assembly 10 of the mobile terminal shown in Fig. 3, first filter circuit 32 and the 3rd filter circuit 42 are direct circuit, when second filter circuit 33 and the 4th filter circuit 43 are inductance or electric capacity, controller 5 controls the common port of the first single pole multiple throw 31 and switches between second switch terminal and the 3rd switch terminal of the first single pole multiple throw 31, or the common port controlling the second single pole multiple throw 41 switches between second switch terminal and the 3rd switch terminal of the second single pole multiple throw 41, the offset direction of antenna frequencies during corresponding switching can be as shown by the arrows in Figure 7.So that antenna frequencies can offset, antenna has frequency-tunable characteristic, it is achieved that further expand the beamwidth of antenna, and in this case, the antenna assembly 10 of mobile terminal has head fingerprint characteristic about balance equally.Wherein, about balance, head fingerprint principle is identical with head fingerprint principle about the antenna assembly 10 of the mobile terminal shown in above-mentioned Fig. 4, Fig. 5 balance, the most no longer repeats.Fig. 8 is the head hands state of mobile terminal when being left head and/or left hand state, and the schematic diagram of the antenna assembly 10 of mobile terminal, controller 5 is the most not shown.Now, controller 5 controls the common port of the first single pole multiple throw 31 and switches between second switch terminal and the 3rd switch terminal of the first single pole multiple throw 31, the common port controlling the second single pole multiple throw 41 switches to the first switch terminal of the second single pole multiple throw 41, controller 5 controls the common port of the first single pole multiple throw 31 when the second switch terminal of the first single pole multiple throw 31 switches to three switch terminal, the offset direction of antenna frequencies can be as shown by the arrows in Figure 7, wherein, solid line is the common port of the first single pole multiple throw 31 antenna standing wave when switching to the second switch terminal, dotted line is the common port of the first single pole multiple throw 31 antenna standing wave when switching to three switch terminal.Therefore, when the first switch module 3 and second switch module 4 are single pole multiple throw, when multiple switch terminal of single pole multiple throw connect a plurality of branch circuit such as inductance, electric capacity or frequency electing and passing circuit respectively, the antenna assembly 10 of mobile terminal can realize frequency continuously adjustabe function.
nullSpecifically，When in the antenna assembly 10 of the mobile terminal shown in Fig. 3，First filter circuit 32 and the 3rd filter circuit 42 are first frequency gating circuit M1，When second filter circuit 33 and the 4th filter circuit 43 are second frequency gating circuit M2，Controller 5 controls the common port of the first single pole multiple throw 31 and switches between second switch terminal and the 3rd switch terminal of the first single pole multiple throw 31、Or the common port controlling the second single pole multiple throw 41 switches between second switch terminal and the 3rd switch terminal of the second single pole multiple throw 41，The offset direction of antenna frequencies during corresponding switching can be as shown by the arrows in Figure 9，Thus be possible not only to so that antenna frequencies can offset，The high band of antenna and low-frequency range are respectively provided with frequency-tunable characteristic，Achieve and further expand the beamwidth of antenna，And in the case of being somebody's turn to do，The antenna assembly 10 of mobile terminal has head fingerprint characteristic about balance equally.Wherein, about balance, head fingerprint principle is identical with head fingerprint principle about the antenna assembly 10 of the mobile terminal shown in above-mentioned Fig. 4, Fig. 5 balance, the most no longer repeats.Figure 10 is the head hands state of mobile terminal when being left head and/or left hand state, and the schematic diagram of the antenna assembly 10 of mobile terminal, controller 5 is the most not shown.Now, controller 5 controls the common port of the first single pole multiple throw 31 and switches between second switch terminal and the 3rd switch terminal of the first single pole multiple throw 31, the common port controlling the second single pole multiple throw 41 switches to the first switch terminal of the second single pole multiple throw 41, the radio frequency energy transmission direction of low frequency is as shown in arrow L1 in Figure 10, and the radio frequency energy transmission direction of high frequency is as shown in arrow H1 in Figure 10.Controller 5 controls the common port of the first single pole multiple throw 31 when the second switch terminal of the first single pole multiple throw 31 switches to three switch terminal, as shown by the arrows in Figure 9, the offset direction of low-frequency range antenna frequencies is different from the offset direction of high band antenna frequencies, wherein, f3 is the antenna resonant frequency of low-frequency range, f4 is the antenna resonant frequency of high band, solid line is the common port of the first single pole multiple throw 31 antenna standing wave when switching to the second switch terminal, and dotted line is the common port of the first single pole multiple throw 31 antenna standing wave when switching to three switch terminal.
Specifically, in one embodiment of the invention, first filter circuit 32, second filter circuit 33, 3rd filter circuit 42 can be connected with the diverse location on mainboard ground 20 respectively with the 4th filter circuit 43, i.e. first filter circuit 32, second filter circuit 33, the most all there is a certain distance in the position that the 3rd filter circuit 42 is connected with mainboard ground 20 with the 4th filter circuit 43, now, in the ordinary course of things, when the first switch module 3 and second switch module 4 switch, the offset direction of low-frequency range antenna frequencies is different from the offset direction of high band antenna frequencies.
It should be noted that, in the embodiment of the present invention, the position of the first switch module 3 and second switch module 4 can be arranged according to the needs of resonant frequency, and the first switch module 3 and second switch module 4 can be separately positioned on first antenna radiant body branch 11 and close antenna feed 2 end of the second antenna radiator branch 12, first antenna radiant body branch 11 and the centre of the second antenna radiator branch 12 or first antenna radiant body branch 11 and the end of the second antenna radiator branch 12.In general, antenna assembly 10 for the mobile terminal shown in Fig. 3, if the first filter circuit 32 and the 3rd filter circuit 42 are inductance or electric capacity etc., then the position of the first switch module 3 and second switch module 4 is the closer to the end of antenna, the high-frequency resonant frequency of antenna is the highest, and low-frequency resonant frequency is the lowest, produce two resonance of low-and high-frequency.Such as, as shown in figure 11, when the first switch module 3 and second switch module 4 are positioned at antenna feed 2 end, antenna resonant frequency is f5；When the first switch module 3 and second switch module 4 are positioned at the end of antenna, the antenna resonant frequency of low-frequency range is f6, the antenna resonant frequency of high band is f7, wherein, the position of the first switch module 3 and second switch module 4 from antenna feed 2 end to the end of antenna change time, the offset direction of antenna frequencies can be as shown in arrow in Figure 11, i.e. the offset direction of low-frequency range antenna frequencies is different from the offset direction of high band antenna frequencies.
Additionally, it should be noted that, when the first switch module 3 and second switch module 4 are positioned near the end of antenna, if the first filter circuit 32 and the 3rd filter circuit 42 are direct circuit, then the antenna assembly 10 of mobile terminal equally produces two resonant frequencies of high and low frequency, and in each frequency range, the antenna assembly 10 of mobile terminal all maintains head fingerprint performance about balance.Now, as shown in figure 12, controller 5 is the most not shown for the structural representation of the antenna assembly 10 of mobile terminal.Wherein, if in Figure 12, the first switch module 3 leads directly to, second switch module 4 is unsettled, then with reference to Figure 13, first antenna radiant body branch 11 constitutes LOOP antenna, producing high frequency, first antenna radiant body branch 11 and the second antenna radiator branch 12 collectively form IFA antenna, produce low frequency.
Further, the end of first antenna radiant body branch 11 and the end of the second antenna radiator branch 12 can be respectively symmetrically to the directions bending of mainboard ground 20, end and first switch module 3 of first antenna radiant body branch 11 are connected, the end of the second antenna radiator branch 12 is connected with second switch module 4, such that it is able to reduce antenna size further.For example, referring to Figure 14, the first switch module 3 and second switch module 4 switch for SP3T, and the first filter circuit 32 and the 3rd filter circuit 42 are direct circuit, and the second filter circuit 33 and the 4th filter circuit 43 are inductance or electric capacity etc..If the first switch module 3 leads directly to, second switch module 4 is unsettled, then first antenna radiant body branch 11 constitutes LOOP antenna, produce high frequency, first antenna radiant body branch 11 and the second antenna radiator branch 12 collectively form IFA antenna, produce low frequency, now, as shown in figure 15, controller 5 is the most not shown for the antenna assembly 10 of mobile terminal.
In another embodiment of the present invention, the first filter circuit 32 can be connected with the same position on mainboard ground 20 with the second filter circuit 33, and the 3rd filter circuit 42 can be connected with the same position on mainboard ground 20 with the 4th filter circuit 43.Thus in the ordinary course of things, when the first switch module 3 and second switch module 4 switch, the offset direction of low-frequency range antenna frequencies is consistent with the offset direction of high band antenna frequencies.In addition, by suitably selecting the first filter circuit the 32, second filter circuit the 33, the 3rd filter circuit 42 and value of the 4th filter circuit 43, can realize ensureing that low-frequency range antenna frequencies is motionless, and only tuned high frequency section antenna frequencies, or ensure that high band antenna frequencies is motionless, and only tune low-frequency range antenna frequencies.So can weaken tuning process medium and low frequency section antenna frequencies and the interactional problem of high band antenna frequencies.Wherein, Figure 16 is the head hands state of mobile terminal when being left head and/or left hand state, and the schematic diagram of the antenna assembly 10 of mobile terminal, controller 5 is the most not shown.nullNow，Controller 5 controls the common port of the first single pole multiple throw 31 and switches between second switch terminal and the 3rd switch terminal of the first single pole multiple throw 31，The common port controlling the second single pole multiple throw 41 switches to the first switch terminal of the second single pole multiple throw 41，Controller 5 controls the common port of the first single pole multiple throw 31 when the second switch terminal of the first single pole multiple throw 31 switches to three switch terminal，The radio frequency energy transmission direction of low frequency is as shown in arrow L11 in Figure 16，The radio frequency energy transmission direction of high frequency is as shown in arrow H11 in Figure 16，The offset direction of antenna frequencies is as shown in arrow in Figure 17，Wherein，F8 is the antenna resonant frequency of low-frequency range，F9 is the antenna resonant frequency of high band，Solid line is the common port of the first single pole multiple throw 31 antenna standing wave when switching to the second switch terminal，Dotted line is the common port of the first single pole multiple throw 31 antenna standing wave when switching to three switch terminal.
Preferably, with reference to Figure 18, in another embodiment of the present invention, first switch module 3 can include the 3rd single pole multiple throw the 34, the 5th filter circuit 35 and the 6th filter circuit 36, and second switch module 4 can include the 4th single pole multiple throw the 44, the 7th filter circuit 45 and the 8th filter circuit 46.Wherein, the common port of the 3rd single pole multiple throw 34 is connected with mainboard ground 20, and the first switch terminal of the 3rd single pole multiple throw 34 is unsettled, and the control end of the 3rd single pole multiple throw 34 is connected with controller 5.5th filter circuit 35 is connected with the second switch terminal of the 3rd single pole multiple throw 34 and first antenna radiant body branch 11 respectively.6th filter circuit 36 is connected with the 3rd switch terminal of the 3rd single pole multiple throw 34 and first antenna radiant body branch 11 respectively.The common port of the 4th single pole multiple throw 44 is connected with mainboard ground 20, and the first switch terminal of the 4th single pole multiple throw 44 is unsettled, and the control end of the 4th single pole multiple throw 44 is connected with controller 5.7th filter circuit 45 is connected with the second switch terminal and the second antenna radiator branch 12 of the 4th single pole multiple throw 44 respectively.8th filter circuit 46 is connected with the 3rd switch terminal and the second antenna radiator branch 12 of the 4th single pole multiple throw 44 respectively.Controller 5 is the most not shown.
Specifically, in one embodiment of the invention, 5th filter circuit 35 and the 7th filter circuit 45 can be direct circuit, 6th filter circuit 36 and the 8th filter circuit 46 can be inductance or electric capacity etc., or the 5th filter circuit 35 and the 7th filter circuit 45 can be the 3rd frequency electing and passing circuit, the 6th filter circuit 36 and the 8th filter circuit 46 can be the 4th frequency electing and passing circuit.
Wherein, in one embodiment of the invention, the 5th filter circuit the 35, the 6th filter circuit the 36, the 7th filter circuit 45 can be connected with the diverse location on first antenna radiant body 1 respectively with the 8th filter circuit 46.In another embodiment of the present invention, 5th filter circuit 35 can be connected with the same position on first antenna radiant body 1 with the 6th filter circuit 36, and the 7th filter circuit 45 can be connected with the same position on first antenna radiant body 1 with the 8th filter circuit 46.
For the antenna assembly 10 of the mobile terminal shown in Figure 18, owing to it is essentially identical with antenna assembly 10 structure of the mobile terminal shown in Fig. 3, only in the antenna assembly 10 of the mobile terminal shown in Figure 18, the first switch module 3 is reverse with the first switch module 3 in the antenna assembly 10 of the mobile terminal shown in Fig. 3, in the antenna assembly 10 of the mobile terminal shown in Figure 18, second switch module 4 is reverse with second switch module 4 in the antenna assembly 10 of the mobile terminal shown in Fig. 3, therefore, about the antenna assembly 10 of the mobile terminal shown in Figure 18 and the balance of the antenna assembly 10 of the mobile terminal shown in Fig. 3, head fingerprint principle and application extension principle are essentially identical, so describe is fairly simple, the part of the antenna assembly 10 of the mobile terminal that relevant part is shown in Figure 3 illustrates.
In yet another embodiment of the present invention, the first switch module 3 can include that the first single-pole single-throw switch (SPST), second switch module 4 can include the second single-pole single-throw switch (SPST).Wherein, one end of the first single-pole single-throw switch (SPST) is connected with first antenna radiant body branch 11, and the other end of the first single-pole single-throw switch (SPST) is connected with mainboard ground 20, and the control end of the first single-pole single-throw switch (SPST) is connected with controller 5.One end of second single-pole single-throw switch (SPST) is connected with the second antenna radiator branch 12, and the other end of the second single-pole single-throw switch (SPST) is connected with mainboard ground 20, and the control end of the second single-pole single-throw switch (SPST) is connected with controller 5.
Now, if the antenna assembly of mobile terminal 10 is positioned over mobile terminal lower end, then control the first single-pole single-throw switch (SPST) Guan Bi when controller 5, when second single-pole single-throw switch (SPST) disconnects, the radiofrequency signal that antenna feed 2 produces is shorted toward the energy of first antenna radiant body branch 11 transmission, radiofrequency signal will be transmitted toward the second antenna radiator branch 12, and by the second antenna radiator branch 12 emittance, antenna end is also at the second antenna radiator branch 12 side, now, corresponding left head fingerprint performance is good, and frequency deviation is few, the Resolving probiems of " dead holds ".In like manner, disconnect when controller 5 controls the first single-pole single-throw switch (SPST), during the second single-pole single-throw switch (SPST) Guan Bi, the energy that the radiofrequency signal that antenna feed 2 produces is transmitted toward the second antenna radiator branch 12 is shorted, radiofrequency signal will be transmitted toward first antenna radiant body branch 11, and by first antenna radiant body branch 11 emittance, antenna end is also at first antenna radiant body branch 11 side.Now, corresponding right head fingerprint performance is good, and frequency deviation is few, the Resolving probiems of " dead holds ".
Preferably, in one embodiment of the invention, the antenna assembly 10 of mobile terminal can also include the second antenna radiator 7 and third antenna radiant body 8.Wherein, one end of the second antenna radiator 7 couples with first antenna radiant body branch 11, and the other end of the second antenna radiator 7 is connected with mainboard ground 20.Third antenna radiant body 8 and the second antenna radiator 7 are symmetrical, one end of third antenna radiant body 8 couples with the second antenna radiator branch 12, the other end of third antenna radiant body 8 is connected with mainboard ground 20, and the second antenna radiator 7 and third antenna radiant body 8 have identical resonance length.
Wherein, in one embodiment of the invention, when the antenna assembly 10 of mobile terminal includes the second antenna radiator 7 and third antenna radiant body 8, when first single pole multiple throw 31 switchs for SP3T, the second single pole multiple throw 41 switchs for SP3T, as shown in figure 19, controller 5 is not shown in Figure 19 for the antenna assembly 10 of mobile terminal.
In the case of Gai, the antenna assembly 10 of mobile terminal can produce extra resonance, expands antenna frequency band further；Additionally, when first antenna radiant body branch 11 resonance is in low-frequency range, second antenna radiator 7 resonance is in high band, or when first antenna radiant body branch 11 resonance is in high band, second antenna radiator 7 resonance is in low-frequency range, or when the second antenna radiator branch 12 resonance is in low-frequency range, third antenna radiant body 8 resonance is in high band, or when the second antenna radiator branch 12 resonance is in high band, third antenna radiant body 8 resonance is in low-frequency range.It is thus possible to realize ensureing that the low-and high-frequency performance of arbitrary head fingerprint is the best, in the case of being somebody's turn to do, about balance, head fingerprint principle is identical with head fingerprint principle about the antenna assembly 10 of the mobile terminal shown in above-mentioned Fig. 4, Fig. 5 balance, the most no longer repeats.It should be noted that the shape of the second antenna radiator 7 and third antenna radiant body 8 can be flexible and changeable, such as, it can be the multiple resonant structures such as G type or F type.
It should be noted that when feedthrough 6 and first antenna radiant body 1 slot-coupled, as shown in figure 20, antenna can also be further added by a resonance, i.e. antenna can produce double resonance, thus expands the beamwidth of antenna further.Need further illustrate be, if feedthrough 6 and first antenna radiant body 1 slot-coupled, then the shape of first antenna radiant body 1 can be PIFA antenna, IFA antenna, Monopole antenna or LOOP antenna etc., in feedthrough 6, coupling piece can produce resonance simultaneously, first antenna radiant body 1 can be as major radiator, now first antenna radiant body 1 produces resonance, or first antenna radiant body 1 can be as auxiliary radiator, now first antenna radiant body 1 does not produce resonance, for guiding radio-frequency (RF) energy to transmit direction, thus control antenna end on the left side of mobile terminal or right side, the most now, the physical length of first antenna radiant body 1 can be arbitrary.Generally, the physical length of first antenna radiant body 1 can be about 1/4 wavelength of coupling piece resonant frequency or about 1/2 wavelength or longer.
Such as, when the 1/4 wavelength left and right that the physical length of first antenna radiant body 1 is coupling piece resonant frequency, first antenna radiant body 1 can produce high-frequency resonant, such that it is able to expanding high-frequency bandwidth, produce double resonance, and in each frequency range, the antenna assembly 10 of mobile terminal all can maintain head fingerprint performance about balance.Wherein, the double resonance that first antenna radiant body 1 produces is as shown in figure 21.If the physical length of first antenna radiant body 1 is about 1/2 wavelength of coupling piece resonant frequency, when the physical length of coupling piece is 1/4 wavelength left and right of coupling piece resonant frequency, then first antenna radiant body 1 does not produce resonance at high band, now first antenna radiant body 1 is as the auxiliary radiator of high band, but first antenna radiant body 1 can produce a resonance in low-frequency range, now, first antenna radiant body 1 is as the major radiator of low-frequency range, and in each frequency range, the antenna assembly 10 of mobile terminal all can maintain head fingerprint performance about balance.
In one particular embodiment of the present invention, with reference to Figure 22, coupling feed-in branch 61 and first antenna radiant body 1 slot-coupled of feedthrough 6, the machine shell of mobile terminal is the version of metal battery cover strip side bound edge.Wherein, metal battery cover is divided into mainboard ground 20, first antenna radiant body branch 11 and the second antenna radiator branch 12 by gap, inserts isolation material such as plastic cement etc. inside gap, and the first switch module 3, second switch module 4 are separately positioned on complete machine both sides.It should be noted that, if having the mobile terminal application traditional antenna scheme of full metal jacket, then affected very greatly by one's hands, antenna resonant frequency after i.e. adding hands, not only can be made significantly to offset, cause left and right head fingerprint performance severe mismatch, also can dramatically increase absorption loss simultaneously.When especially certain side in gap is close in the thumb side of hands, it is most likely that the problem that " dead holds " occurs.Equally, there is the mobile terminal of full metal jacket when darkroom measuring head fingerprint performance, also there will be the obvious left and right head unbalanced phenomenon of fingerprint performance.
And at mobile terminal, there is full metal jacket, after the antenna assembly 10 of mobile terminal adds the first coupling branch 102, first coupling branch 102 and first antenna radiant body 1 slot-coupled, and first coupling branch 102 and mainboard ground 20 be connected, it is possible not only to well solve problem above, realize expanding bandwidth, can also be by weakening the amount of coupling of coupling feed-in branch 61 and first antenna radiant body branch 11, with the amount of coupling weakening the first coupling branch 102 and the second antenna radiator branch 12, realize strengthening coupling feed-in branch 61 and the radianting capacity of the first coupling branch 102, and weaken first antenna radiant body branch 11 and the radio-frequency (RF) energy of the second antenna radiator branch 12, thus reduce the first switch module 3 further, the loss of second switch module 4.
Wherein, turn on when controller 5 controls the first switch module 3, when second switch module 4 disconnects, the right head fingerprint data and curves of the antenna assembly 10 of the mobile terminal shown in Figure 22 is as shown in curve 2 in Figure 23, left head fingerprint data and curves is as shown in curve 3 in Figure 23, can find from Figure 23, now the right head fingerprint data of the antenna assembly 10 of mobile terminal are good, absorb the least, and the left low about 10dB of head fingerprint data, absorb the biggest, therefore, when the antenna assembly 10 of mobile terminal is at right head and/or right hand state, this on off state can be selected, wherein, in Figure 23, curve 1 is the free space data and curves of the antenna assembly 10 of mobile terminal.Additionally, turn on when controller 5 controls second switch module 4, when first switch module 3 disconnects, in Figure 22, the right head fingerprint data and curves of the antenna assembly 10 of mobile terminal is as shown in curve 21 in Figure 24, left head fingerprint data and curves is as shown in curve 31 in Figure 24, can find from Figure 24, now the left head fingerprint data of the antenna assembly 10 of mobile terminal are good, absorb the least, and right low about 3dB～10dB of head fingerprint data, absorb big, therefore, when the antenna assembly 10 of mobile terminal is at left head and/or left hand state, this on off state can be selected, wherein, in Figure 24, curve 11 is the free space data and curves of the antenna assembly 10 of mobile terminal.By selected above, finally making left and right head fingerprint Performance comparision balance, and absorb little, relatively conventional antenna scheme has obtained significantly improving.
It should be noted that, in Figure 22, due to the coupling feed-in branch 61, first of feedthrough 6 couple branch 102 respectively with first antenna radiant body 1 slot-coupled, coupling feed-in branch 61 and the first coupling branch 102 produce high-frequency resonant, first antenna radiant body 1 then can be as high frequency major radiator, first antenna radiant body 1 produces resonance, or first antenna radiant body 1 is as high frequency auxiliary radiator, now first antenna radiant body 1 does not produce resonance, but bootable radio-frequency (RF) energy transmission direction, thus control antenna end in the left side of mobile terminal or right side.
In Figure 22, owing to being limited by mobile terminal structure size, the physical length of first antenna radiant body 1 can be fixed as about one times of wavelength of coupling piece resonant frequency, therefore, is difficult to produce resonance at high frequency treatment, causes high frequency bandwidth more difficult covering 1710M～2690M.It should be noted that, in Figure 22, the antenna assembly 10 of mobile terminal is applicable not only to the mobile terminal of full metal jacket, the mobile terminal of back metal battery cover shell, it is also applied for the mobile terminal of metal frame shell, and first antenna radiant body 1 is made into during metal frame equally applicable.
In one particular embodiment of the present invention, when feedthrough 6 and first antenna radiant body 1 slot-coupled, the antenna assembly 10 of mobile terminal can also include: the first tuned cell 9 or second tune unit 101, wherein, with reference to Figure 25, one end of first tuned cell 9 is connected with the coupling feed-in branch 61 such as coupling piece of feedthrough 6, and the other end of the first tuned cell 9 is connected with mainboard ground 20；Coupling feed-in branch 61 and first antenna radiant body 1 slot-coupled.With reference to Figure 26, one end of second tune unit 101 is connected with antenna feed 2, and the other end of second tune unit 101 is connected with coupling feed-in branch 61.
In one particular embodiment of the present invention, with reference to Figure 25, the antenna assembly 10 of mobile terminal can also include: the first coupling branch 102 such as coupling piece and the 3rd tuned cell 103, wherein, first couples branch 102 and first antenna radiant body 1 slot-coupled, and the first coupling branch 102 is connected with mainboard ground 20；One end of 3rd tuned cell 103 is connected with the first coupling branch 102, and the other end of the 3rd tuned cell 103 is connected with mainboard ground 20.
In another specific embodiment of the present invention, with reference to Figure 26, the antenna assembly 10 of mobile terminal can also include: the second coupling branch 104 such as coupling piece and the 4th tuned cell 105, wherein, and the second coupling branch 104 and first antenna radiant body 1 slot-coupled；One end of 4th tuned cell 105 is connected with mainboard ground 20, and the other end of the 4th tuned cell 105 and the second coupling branch 104 are connected.
Wherein, first tuned cell 9, second tune unit the 101, the 3rd tuned cell 103 and the 4th tuned cell 105 can be variable inductance, it can be maybe variable capacitance, such that it is able to realize expanding bandwidth further, and now in each frequency range, the antenna assembly 10 of mobile terminal all can maintain head fingerprint performance about balance.
In one embodiment of the invention, first tuned cell 9 and the 3rd tuned cell 103 are variable capacitance, when the capacitance of the first tuned cell 9 and the 3rd tuned cell 103 increases, as shown in figure 27, the resonant frequency of the antenna assembly 10 of mobile terminal will offset toward low frequency direction, thus expand the beamwidth of antenna further in the offset direction of antenna frequencies, the especially high frequency bandwidth of antenna, wherein, solid line is the antenna frequencies before capacitance increases, and dotted line is the antenna frequencies after capacitance increases.
The antenna assembly of the mobile terminal of the embodiment of the present invention includes advantages below:
nullFeedthrough and first antenna radiant body slot-coupled are set，Or feedthrough is the wire being connected with first antenna radiant body，Antenna feed respectively with the mainboard of feedthrough and mobile terminal be connected，First switch module such as single-pole single-throw switch (SPST) or single pole multiple throw respectively with the first antenna radiant body branch of first antenna radiant body and mainboard be connected，Second switch module such as single-pole single-throw switch (SPST) or single pole multiple throw and the first switch module are symmetrical，Second switch module respectively with the second antenna radiator branch and mainboard be connected，And then control the first switch module Guan Bi by controller、Second switch module disconnects，Or control the first switch module disconnection、Second switch module closes，Thus only need an antenna feed point、Two switches，Head fingerprint function about balance can be realized，Low cost，And switching loss and head fingerprint absorb little，Final improvement better (such as improving 10dB)，Not only reduce design and debugging difficulty，And the problem that " dead holds " can be solved；
nullAdditionally，If increase switching branches，Frequency-tunable function can also be realized，Work in different systems the most as required，Such as GSM (GlobalSystemforMobileCommunication，Global system for mobile communications)/TD-SCDMA (TimeDivision-SynchronousCodeDivisionMultipleAccess，TD SDMA)/WCDMA (WidebandCodeDivisionMultipleAccess，WCDMA)/LTE (LongTermEvolution，Long Term Evolution) etc.，Or work in different antennae frequency range as required，Such as high bands such as low-frequency range or GSM1800/GSM1900 etc. such as GSM850/GSM900，And influencing each other between low-and high-frequency when can solve tuning；
Simultaneously as multiplex switch, also can reduce cost further, simplify design, reduction switching loss etc.；
Additionally, if antenna uses coupling feed-in mode, the most weak coupling can make switching loss less, reduce switching loss further；
Furthermore, by switching switching cleverly, increasing frequency electing and passing circuit, increase antenna radiator or increase the measures such as parasitic branch, it is also possible to meet the demand of multiband, and each frequency range is respectively provided with head fingerprint function about frequency-adjustable and balance.
The embodiment of the invention also discloses a kind of mobile terminal, including mainboard ground 20 and the antenna assembly 10 of above-mentioned mobile terminal, the antenna assembly 10 of mobile terminal is connected with mainboard ground 20.
Specifically, the shell of the mobile terminal of the embodiment of the present invention can be mobile terminal and the mobile terminal of other shells of the metal shells such as plastic shell, metal frame shell, full metal jacket or back metal battery cover shell.
The mobile terminal of the embodiment of the present invention includes advantages below: the antenna assembly of mobile terminal only needs an antenna feed point and two switches, head fingerprint function about balance can be realized, low cost, and reduce switching loss and the absorption of head fingerprint, reduce design difficulty and debugging difficulty, and the problem that " dead holds " can be solved.
For mobile terminal embodiment, owing to it includes the antenna assembly embodiment of mobile terminal, so describe is fairly simple, the part of the antenna assembly embodiment that relevant part sees mobile terminal illustrates.
Each embodiment in this specification all uses the mode gone forward one by one to describe, and what each embodiment stressed is the difference with other embodiments, and between each embodiment, identical similar part sees mutually.
Although having been described for the preferred embodiment of the embodiment of the present invention, but those skilled in the art once know basic creative concept, then these embodiments can be made other change and amendment.So, claims are intended to be construed to include preferred embodiment and fall into all changes and the amendment of range of embodiment of the invention.
Finally, it can further be stated that, in this article, the relational terms of such as first and second or the like is used merely to separate an entity or operation with another entity or operating space, and not necessarily requires or imply the relation or sequentially that there is any this reality between these entities or operation.And, term " includes ", " comprising " or its any other variant are intended to comprising of nonexcludability, so that include that the process of a series of key element, method, article or terminal unit not only include those key elements, but also include other key elements being not expressly set out, or also include the key element intrinsic for this process, method, article or terminal unit.In the case of there is no more restriction, statement " including ... " key element limited, it is not excluded that there is also other identical element in including the process of described key element, method, article or terminal unit.
Antenna assembly and a kind of mobile terminal to a kind of mobile terminal provided by the present invention above, it is described in detail, principle and the embodiment of the present invention are set forth by specific case used herein, and the explanation of above example is only intended to help to understand method and the core concept thereof of the present invention；Simultaneously for one of ordinary skill in the art, according to the thought of the present invention, the most all will change, in sum, this specification content should not be construed as limitation of the present invention.
Claims (17)
1. the antenna assembly of a mobile terminal, it is characterised in that including:
First antenna radiant body, described first antenna radiant body includes first antenna radiant body branch and the second antenna radiator branch of symmetry；
Feedthrough, described feedthrough is the wire being connected with described first antenna radiant body, or described feedthrough and described first antenna radiant body slot-coupled；
Antenna feed, described antenna feed respectively with the mainboard of described feedthrough and mobile terminal be connected；
First switch module, described first switch module respectively with described first antenna radiant body branch and described mainboard be connected；
Second switch module, described second switch module is symmetrical with described first switch module, described second switch module respectively with described second antenna radiator branch and described mainboard be connected；
Controller, described controller is connected with described first switch module and described second switch module respectively, described controller controls described first switch module Guan Bi, described second switch module disconnects, or controls described first switch module disconnection, described second switch module Guan Bi.
Antenna assembly the most according to claim 1, it is characterised in that
Described first switch module includes:
First single pole multiple throw, the common port of described first single pole multiple throw is connected with described first antenna radiant body branch, and the first switch terminal of described first single pole multiple throw is unsettled, and the control end of described first single pole multiple throw is connected with described controller；
First filter circuit, described first filter circuit respectively with the second switch terminal of described first single pole multiple throw and described mainboard be connected；
Second filter circuit, described second filter circuit respectively with the 3rd switch terminal of described first single pole multiple throw and described mainboard be connected；
Described second switch module includes:
Second single pole multiple throw, the common port of described second single pole multiple throw is connected with described second antenna radiator branch, and the first switch terminal of described second single pole multiple throw is unsettled, and the control end of described second single pole multiple throw is connected with described controller；
3rd filter circuit, described 3rd filter circuit respectively with the second switch terminal of described second single pole multiple throw and described mainboard be connected；
4th filter circuit, described 4th filter circuit respectively with the 3rd switch terminal of described second single pole multiple throw and described mainboard be connected.
Antenna assembly the most according to claim 2, it is characterised in that
Described first filter circuit and described 3rd filter circuit are direct circuit, and described second filter circuit and described 4th filter circuit are inductance or electric capacity；Or described first filter circuit and described 3rd filter circuit are first frequency gating circuit, described second filter circuit and described 4th filter circuit are second frequency gating circuit.
Antenna assembly the most according to claim 2, it is characterised in that described first filter circuit, described second filter circuit, described 3rd filter circuit are connected with described mainboard diverse location on the ground respectively with described 4th filter circuit.
Antenna assembly the most according to claim 2, it is characterized in that, described first filter circuit is connected with described mainboard same position on the ground with described second filter circuit, and described 3rd filter circuit is connected with described mainboard same position on the ground with described 4th filter circuit.
Antenna assembly the most according to claim 2, it is characterized in that, it is local to bending to described mainboard that the end of described first antenna radiant body branch and the end of described second antenna radiator branch are respectively symmetrically, the end of described first antenna radiant body branch is connected with described first switch module, and the end of described second antenna radiator branch is connected with described second switch module.
Antenna assembly the most according to claim 1, it is characterised in that
Described first switch module includes:
3rd single pole multiple throw, is connected the common port of described 3rd single pole multiple throw and described mainboard, and the first switch terminal of described 3rd single pole multiple throw is unsettled, and the control end of described 3rd single pole multiple throw is connected with described controller；
5th filter circuit, described 5th filter circuit is connected with the second switch terminal of described 3rd single pole multiple throw and described first antenna radiant body branch respectively；
6th filter circuit, described 6th filter circuit is connected with the 3rd switch terminal of described 3rd single pole multiple throw and described first antenna radiant body branch respectively；
Described second switch module includes:
4th single pole multiple throw, is connected the common port of described 4th single pole multiple throw and described mainboard, and the first switch terminal of described 4th single pole multiple throw is unsettled, and the control end of described 4th single pole multiple throw is connected with described controller；
7th filter circuit, described 7th filter circuit is connected with the second switch terminal of described 4th single pole multiple throw and described second antenna radiator branch respectively；
8th filter circuit, described 8th filter circuit is connected with the 3rd switch terminal and the described second antenna radiator branch of described 4th single pole multiple throw respectively.
Antenna assembly the most according to claim 7, it is characterised in that
Described 5th filter circuit and described 7th filter circuit are direct circuit, and described 6th filter circuit and described 8th filter circuit are inductance or electric capacity；Or described 5th filter circuit and described 7th filter circuit are the 3rd frequency electing and passing circuit, described 6th filter circuit and described 8th filter circuit are the 4th frequency electing and passing circuit.
Antenna assembly the most according to claim 7, it is characterised in that described 5th filter circuit, described 6th filter circuit, described 7th filter circuit are connected with the diverse location on described first antenna radiant body respectively with described 8th filter circuit.
Antenna assembly the most according to claim 7, it is characterized in that, described 5th filter circuit is connected with the same position on described first antenna radiant body with described 6th filter circuit, and described 7th filter circuit is connected with the same position on described first antenna radiant body with described 8th filter circuit.
11. antenna assemblies according to claim 1, it is characterised in that
Described first switch module includes:
First single-pole single-throw switch (SPST), one end of described first single-pole single-throw switch (SPST) is connected with described first antenna radiant body branch, being connected, the control end of described first single-pole single-throw switch (SPST) is connected with described controller the other end of described first single-pole single-throw switch (SPST) and described mainboard；
Described second switch module includes:
Second single-pole single-throw switch (SPST), one end of described second single-pole single-throw switch (SPST) is connected with described second antenna radiator branch, being connected, the control end of described second single-pole single-throw switch (SPST) is connected with described controller the other end of described second single-pole single-throw switch (SPST) and described mainboard.
12. antenna assemblies according to claim 1, it is characterised in that also include:
Second antenna radiator, one end of described second antenna radiator couples with described first antenna radiant body branch, is connected the other end of described second antenna radiator and described mainboard；
Third antenna radiant body, described third antenna radiant body is symmetrical with described second antenna radiator, and one end of described third antenna radiant body couples with described second antenna radiator branch, is connected the other end of described third antenna radiant body and described mainboard.
13. antenna assemblies according to claim 1, it is characterised in that when described feedthrough and described first antenna radiant body slot-coupled, also include:
First tuned cell, the coupling feed-in branch of one end of described first tuned cell and feedthrough is connected, and is connected the other end of described first tuned cell and described mainboard；Described coupling feed-in branch and described first antenna radiant body slot-coupled；Or
Second tune unit, one end of described second tune unit is connected with described antenna feed, and the other end of described second tune unit is connected with described coupling feed-in branch.
14. antenna assemblies according to claim 1, it is characterised in that also include:
First coupling branch, described first coupling branch and described first antenna radiant body slot-coupled, and described first coupling branch and described mainboard be connected；
3rd tuned cell, one end of described 3rd tuned cell is connected with described first coupling branch, is connected the other end of described 3rd tuned cell and described mainboard.
15. antenna assemblies according to claim 1, it is characterised in that also include:
Second coupling branch, described second coupling branch and described first antenna radiant body slot-coupled；
4th tuned cell, is connected one end of described 4th tuned cell and described mainboard, and the other end of described 4th tuned cell is connected with described second coupling branch.
16. 1 kinds of mobile terminals, it is characterised in that with including mainboard with according to the antenna assembly of the mobile terminal according to any one of claim 1-15, are connected the antenna assembly of described mobile terminal and described mainboard.
17. mobile terminals according to claim 16, it is characterised in that the shell of described mobile terminal is plastic shell, metal frame shell, full metal jacket or back metal battery cover shell.
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