CN105826685A

CN105826685A - Antenna system, terminal and control method for radio frequency signals

Info

Publication number: CN105826685A
Application number: CN201510757514.6A
Authority: CN
Inventors: 李日辉
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2015-11-06
Filing date: 2015-11-06
Publication date: 2016-08-03
Anticipated expiration: 2035-11-06
Also published as: CN105826685B

Abstract

The invention provides an antenna system, a terminal and a control method for radio frequency signals. The antenna system comprises an antenna radiator, a signal generating circuit, a first coupling circuit and a second coupling circuit. The antenna radiator comprises a first antenna branch and a second antenna branch. The antenna system is in such a first connection state that: the first coupling circuit and the first antenna branch are in coupling disconnection with each other; the first antenna branch sends out a first radio frequency signal at a first frequency; the second coupling circuit and the second antenna branch are in coupling connection with each other; the second antenna branch sends out a second radio frequency signal at the first frequency; and the radio frequency energy of the first radio frequency signal is smaller than the radio frequency energy of the second radio frequency signal. Or, the antenna system is in such a second connection state that: the first coupling circuit and the first antenna branch are in coupling connection with each other; the first antenna branch sends out the first radio frequency signal; the second coupling circuit and the second antenna branch are in coupling disconnection with each other; the second antenna branch sends out the second radio frequency signal; and the radio frequency energy of the first radio frequency signal is larger than the radio frequency energy of the second radio frequency signal. The antenna system is controlled to be in the first connection state or the second connection state.

Description

A kind of control method of antenna system, terminal and radiofrequency signal

Technical field

The present invention relates to antenna technology, particularly relate to the control method of a kind of antenna system, terminal and radiofrequency signal.

Background technology

At present, Ge great operator and terminal producer all take much count of mobile terminal antenna performance under number of people hand model, and left and right head fingerprint performance is proposed specific requirement.But how to solve a fingerprint and absorb the difficult problem that big and that left and right difference is big problem is still in industry, particularly metal appearance mobile terminal.

Metal appearance mobile terminal is popularized in recent years, and antenna realizes upper it is generally required to utilize metal parts, and this makes the impact of the number of people or staff significantly increase, particularly staff.Antenna resonant frequency not only can be made after adding hands significantly to offset, cause severe mismatch, also can dramatically increase absorption loss, it is most likely that the problem that " dead holds " occurs.The phenomenon of signal fast-fading when " dead holds " refers to hold antenna.

Traditional antenna scheme causes left and right head fingerprint difference big owing to antenna feed point is positioned at certain side of mainboard.In general, about plastic outer mobile terminal, head fingerprint difference is often more than 3dB, and can reach 10dB when all-metal outward appearance mobile terminal is serious.

Summary of the invention

The purpose of the embodiment of the present invention is to provide the control method of a kind of antenna system, terminal and radiofrequency signal, during to solve add hands in terminal or add, antenna resonant frequency can be made significantly to offset, increase absorption loss, the problem making signal fast-fading.

To achieve these goals, a kind of antenna system that the embodiment of the present invention provides, including:

Antenna radiator, including first antenna branch and the second antenna branch of being connected with described first antenna branch；

The signal generating circuit being connected with described antenna radiator, provides radiofrequency signal for described antenna radiator；

First be of coupled connections with described first antenna branch couple circuit and be of coupled connections with described second antenna branch second couple circuit；

Described antenna system is in the first connection status, described first connection status is that described first coupling circuit couples disconnection with described first antenna branch, described first antenna branch launches the first radiofrequency signal of first frequency, and described second coupling circuit be of coupled connections with described second antenna branch, described second antenna branch launches the second radiofrequency signal of first frequency, and the radio-frequency (RF) energy of described first radiofrequency signal is less than the radio-frequency (RF) energy of described second radiofrequency signal；Or

Described antenna system is in the second connection status, described second connection status is that described first coupling circuit is of coupled connections with described first antenna branch, described first antenna branch launches described first radiofrequency signal, and described second coupling circuit couple disconnection with described second antenna branch, described second antenna branch launches described second radiofrequency signal, and the radio-frequency (RF) energy of described first radiofrequency signal is more than the radio-frequency (RF) energy of described second radiofrequency signal；

Control described antenna system and be in described first connection status or described second connection status.

The embodiment of the present invention also provides for a kind of terminal, and including circuit printing plate, wherein said terminal also includes: the antenna system described above being arranged on described circuit printing plate.

The embodiment of the present invention also provides for the control method of a kind of radiofrequency signal, is applied to an antenna system, including:

Obtain the radiofrequency signal of signal generating circuit generation to having first antenna branch and the antenna radiator of the second antenna branch；

Control be of coupled connections with described first antenna branch first couple circuit and be of coupled connections with described second antenna branch second couple circuit switching described antenna system connection status, wherein, described connection status includes the first connection status of described antenna system and the second connection status of described antenna system, wherein

Described first connection status is that described first coupling circuit couples disconnection with described first antenna branch, described first antenna branch launches the first radiofrequency signal of first frequency, and described second coupling circuit be of coupled connections with described second antenna branch, described second antenna branch launches the second radiofrequency signal of first frequency, and the radio-frequency (RF) energy of described first radiofrequency signal is less than the radio-frequency (RF) energy of described second radiofrequency signal；Or described second connection status is that described first coupling circuit is of coupled connections with described first antenna branch, described first antenna branch launches described first radiofrequency signal, and described second coupling circuit couple disconnection with described second antenna branch, described second antenna branch launches described second radiofrequency signal, and the radio-frequency (RF) energy of described first radiofrequency signal is more than the radio-frequency (RF) energy of described second radiofrequency signal.

Having the beneficial effect that of the technique scheme of the embodiment of the present invention:

In the scheme of the embodiment of the present invention, the radiofrequency signal produced by signal generating circuit, control shifting antenna system and be in the first connection status or the second connection status, and then radiofrequency signal is assembled in the first antenna branch or the second antenna branch of antenna radiator, launch from different antenna branch；Such as terminal is at hand when first antenna branch, and the second antenna branch controlling to couple circuit coupling with second launches the second radiofrequency signal；In like manner, such as terminal is at hand when the second antenna branch, and the first antenna branch controlling to couple circuit coupling with first launches the first radiofrequency signal, so can reduce the decline of signal, improve radio-frequency (RF) energy.

Accompanying drawing explanation

Fig. 1-6 is one of structural representation of antenna system of the embodiment of the present invention；

Fig. 7 is one of expansion bandwidth schematic diagram of the antenna system of the embodiment of the present invention；

Fig. 8 is one of structural representation of antenna system of the embodiment of the present invention；

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

Figure 10 is one of expansion bandwidth schematic diagram of the antenna system of the embodiment of the present invention；

Figure 11 is one of structural representation of antenna system of the embodiment of the present invention；

Figure 12 is one of expansion bandwidth schematic diagram of the antenna system of the embodiment of the present invention；

Figure 13-17 is one of structural representation of antenna system of the embodiment of the present invention；

Figure 18 is one of structural representation of terminal and the antenna system of the embodiment of the present invention；

Figure 19 is one of step schematic diagram of the control method of the radiofrequency signal of the embodiment of the present invention.

Description of reference numerals:

null1-antenna radiator，11-first antenna branch，12-the second antenna branch，2-signal generating circuit，21-feeder equipment，22-feed，31-first couples circuit，311-the first single-pole single-throw switch (SPST)，312-the first match circuit，313-the first passive antenna branch，314-the first single pole multiple throw，315-the 3rd match circuit，32-second couples circuit，321-the second single-pole single-throw switch (SPST)，322-the second match circuit，323-the second passive antenna branch，324-the second single pole multiple throw，325-the 4th match circuit，5-detects control circuit，6-mainboard ground，71-sensor，72-the first controller，81-the first detector，82-first processor，83-second controller，91-the second detector，92 second processors，93-the 3rd controller.

Detailed description of the invention

Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is only a part of embodiment of the present invention rather than whole embodiments.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art are obtained under not making creative work premise, broadly fall into the scope of protection of the invention.

The embodiment of the present invention, for when adding hands in prior art in terminal or add, can make antenna resonant frequency significantly offset, and increases absorption loss, the problem making signal fast-fading, it is provided that the control method of a kind of antenna system, terminal and radiofrequency signal.

First embodiment

As shown in Figure 1, this antenna system includes: antenna radiator 1, including first antenna branch 11 and the second antenna branch 12 of being connected with this first antenna branch 11, the signal generating circuit 2 being connected with this antenna radiator 1, first be of coupled connections with this first antenna branch 11 couple circuit 31 and be of coupled connections with this second antenna branch 12 second couple circuit 32；

This antenna system is in the first connection status, this first connection status is that this first coupling circuit 31 couples disconnection with this first antenna branch 11, this first antenna branch 11 launches first frequency the first radiofrequency signal, and this second coupling circuit 32 is of coupled connections with this second antenna branch 12, this second antenna branch 12 launches the second radiofrequency signal of first frequency, and the radio-frequency (RF) energy of this first radiofrequency signal is less than the radio-frequency (RF) energy of this second radiofrequency signal；Or

This antenna system is in the second connection status, this second connection status is that this first coupling circuit 31 is of coupled connections with this first antenna branch 11, this first antenna branch 11 launches the first radiofrequency signal, and this second coupling circuit 32 couples disconnection with this second antenna branch 12, this second antenna branch 12 launches the second radiofrequency signal, and the radio-frequency (RF) energy of this first radiofrequency signal is more than the radio-frequency (RF) energy of this second radiofrequency signal；

Control this antenna system and be in this first connection status or this second connection status.

It should be noted that, above-mentioned signal generating circuit 2 provides radiofrequency signal for this antenna radiator 1, concrete, one end of this signal generating circuit 2 is connected between this first antenna branch 11 and this second antenna branch 12, the other end ground connection of this signal generating circuit 2, such that it is able to emission of radio frequency signals gone out by antenna radiator 1, antenna radiator 1 can also receive radiofrequency signal.

Further, this first coupling circuit 31 and the distance of this first antenna branch 11 are less than the distance with this second antenna branch 12；This second coupling circuit 32 is less than the distance with this first antenna branch 11 with the distance of this second antenna branch 12.

Above-mentioned first frequency is set in advance by user.

As shown in Figure 1, above-mentioned first coupling circuit 31 is normally at the lower section of above-mentioned first antenna branch 11, above-mentioned second coupling circuit 32 is normally at the lower section of above-mentioned second antenna branch 12, so that the first coupling circuit 31 couples with first antenna branch 11, second coupling circuit 32 couples with the second antenna branch 12, to antenna radiator 1 generation effect, it is also beneficial to control the first coupling circuit 31 and the second coupling circuit 3241.

In first embodiment of the invention, the radiofrequency signal launched by signal generating circuit 2, control shifting antenna system and be in the first connection status or the second connection status, and then radiofrequency signal is assembled in the first antenna branch 11 or the second antenna branch 12 of antenna radiator, launch from different antenna branch；Such as terminal is at hand when first antenna branch 11, and the second antenna branch 12 controlling to couple circuit 32 coupling with second launches the second radiofrequency signal；In like manner, such as terminal is at hand when the second antenna branch 12, it is also possible to the first antenna branch 11 controlling to couple circuit 31 coupling with first launches the first radiofrequency signal, so can reduce the decline of signal, improve radio-frequency (RF) energy.

In first embodiment of the invention, there is multiple different type in above-mentioned first antenna branch 11 from above-mentioned second antenna branch 12, above-mentioned first antenna branch 11 includes: one pole (Monopole) antenna, PIFA (PlanarInvertedF-shapedAntenna, planar inverted F-shape antenna), IFA (InvertedF-shapedAntenna, inverted F shaped antenna) antenna, annular (LOOP) antenna or G type antenna；And above-mentioned second antenna branch 12 includes: one pole (Monopole) antenna, planar inverted F-shape antenna PIFA, inverted F shaped antenna IFA, annular (LOOP) antenna or G type antenna；Concrete example is as follows.

The first, it is PIFA antenna in above-mentioned first antenna branch 11 and above-mentioned second antenna branch 12, or when above-mentioned first antenna branch 11 and above-mentioned second antenna branch 12 are IFA antenna, concrete connected mode is as shown in Figure 2, this PIFA antenna or this IFA antenna, be respectively provided with balancing head fingerprint characteristic and the frequency-adjustable characteristic of double frequency.

The second, in above-mentioned first antenna branch 11 and above-mentioned second antenna branch 12, any antenna branches into monopole antenna, when another antenna branch PIFA antenna or IFA antenna, concrete connected mode is as it is shown on figure 3, PIFA or IFA antenna has balancing head fingerprint characteristic and the frequency-adjustable characteristic of double frequency equally.

The third, when above-mentioned first antenna branch 11 and above-mentioned second antenna branch 12 are LOOP antenna, as shown in Figure 4, this LOOP antenna is also balancing head fingerprint characteristic and the frequency-adjustable characteristic with double frequency, difference is, LOOP antenna not only produces resonance in low-frequency range, it is also possible to produces at least one resonance at high band, and then widens the beamwidth of antenna.

4th kind, above-mentioned first antenna branch 11 or above-mentioned second antenna branch 12 can be any antenna forms such as Monopole antenna, PIFA antenna or IFA antenna, and another antenna branch can be LOOP antenna.Concrete connected mode is as it is shown in figure 5, above-mentioned first antenna branch 11 is Monopole antenna, and above-mentioned second antenna branch 12 is LOOP antenna, it is only necessary to first antenna branch 11 and the second antenna branch 12 are tuned to identical resonant frequency.

5th kind, above-mentioned first antenna branch 11 and above-mentioned second antenna branch 12 are respectively G antenna, by using double G antenna can realize expanding bandwidth (as shown in Figure 7), concrete connected mode is as shown in Figure 6, this G type antenna is except producing resonance in low-frequency range (f1 and f2), a resonant frequency f3 can also be produced at high band, thus widen the beamwidth of antenna.

It also should be noted that, this signal generating circuit 2 includes feed 22 and the feeder equipment 21 being connected with this feed 22；Wherein, as shown in Figures 1 to 6, this feeder equipment 21 is directly connected to this feed 22；Or, as shown in Figure 8, this feeder equipment 21 is of coupled connections with this antenna radiator 1.

Wherein, one end ground connection of this feed 22, the other end of this feed 22 is connected to one end of this feeder equipment 21, and the other end of this feeder equipment 21 is connected to this antenna radiator 1, the radiofrequency signal that the feed 22 of this signal generating circuit 2 produces, is sent to this antenna radiator 1 by this feeder equipment 21.

In the embodiment of the present invention, it is directly connected to this feed 22 by this feeder equipment 21, user's basic demand to frequency can be met.nullIf user wants to use multiple frequency，As shown in Figure 8，By being of coupled connections the radiofrequency signal of feed 22 to antenna radiator 1，Control the most again the first coupling circuit 31 couple with first antenna branch 11 or second coupling circuit 32 couple with the second antenna branch 12，So that signal generating circuit 2 produce radiofrequency signal from first antenna branch 11 or the second antenna branch 12 launch (can using finally export radiofrequency signal antenna radiator 1 as antenna end)，So it is possible not only to realize launching radiofrequency signal by control the first coupling circuit 31 or the second coupling circuit 32，Realize the switching to the antenna end launching radiofrequency signal，Decrease mould at hand to absorb，Reduce the decline of signal，And a resonant frequency can also be produced again owing to being of coupled connections，Make antenna system that multiple resonant frequencies occur，Widen bandwidth requirements.

It should be understood that a point between the connecting line that feed point is feeder equipment 21 and feed 22, it is in order to signal generating circuit 2 is connected on antenna radiator 1.

Concrete, as shown in Figures 1 to 6, in this antenna system, this first coupling circuit 31 includes: the first switch, at least one first match circuit 312 and the first passive antenna branch 313 being connected with this first switch；Wherein, this first switches off and the connection of this first match circuit 312, and this first antenna branch 11 launches this first radiofrequency signal and this first passive antenna branch 313 does not launch the 3rd radiofrequency signal of second frequency；Or

This first switch connection and the connection of this first match circuit 312, this the first passive antenna branch couples with 313 these first antenna branches 11, launching this first radiofrequency signal from this first antenna branch 11, the radio-frequency (RF) energy of this first antenna branch 11 first frequency is more than the radio-frequency (RF) energy of this first passive antenna branch 313 first frequency；Or launch the 3rd radiofrequency signal of second frequency from this first passive antenna branch 313, the radio-frequency (RF) energy of this first passive antenna branch 313 second frequency is more than the radio-frequency (RF) energy of this first antenna branch 11 second frequency.

This second coupling circuit 32 includes: second switch, at least one second match circuit 322 and the second passive antenna branch 323 being connected with this second switch；Wherein, this first switch connection and the connection of this first match circuit 312, this second switch disconnects the connection with this second match circuit 322, this the first passive antenna branch 313 couples with this first antenna branch 11, and launch this first radiofrequency signal from this first antenna branch 11, the radio-frequency (RF) energy of this first antenna branch 11 first frequency is more than the radio-frequency (RF) energy of this first passive antenna branch 313 first frequency；Or launch the 3rd radiofrequency signal of second frequency from this first passive antenna branch 313, the radio-frequency (RF) energy of this first passive antenna branch 313 second frequency is more than the radio-frequency (RF) energy of this first antenna branch 11 second frequency；Or this second switch connects the connection with this second match circuit 322, this first switches off and the connection of this first match circuit 312, this the second passive antenna branch 323 couples with this second antenna branch 12, launching this second radiofrequency signal from this second antenna branch 12, the radio-frequency (RF) energy of this second antenna branch 12 first frequency is more than the radio-frequency (RF) energy of this second passive antenna branch 323 first frequency；Or launch the 4th radiofrequency signal of second frequency from this second passive antenna branch 323, the radio-frequency (RF) energy of this second passive antenna branch 323 second frequency is more than the radio-frequency (RF) energy of this second antenna branch 12 second frequency.

Above-mentioned second frequency is set in advance by user.

In the embodiment of the present invention, by controlling the first switch and connection status of second switch, thus switch the connection status of antenna, so can control antenna system and be in different states, and then at one's fingertips under the influence of mould, the switching of the antenna end launching radiofrequency signal can be decreased mould at hand and absorbs, also reduces the decline of signal.

It should be noted that above-mentioned first passive antenna branch 313 and the second passive antenna branch 323 are particularly as follows: this first passive antenna branch 313 is G type antenna, this second passive antenna branch 323 is G type antenna, may be located at the left and right sides of terminal.

Also have, first antenna branch 11 and the second antenna branch 12 launch identical resonant frequency, first passive antenna branch 313 and the second passive antenna branch 323 also launch identical resonant frequency, therefore the embodiment of the present invention has two resonant frequencies, one resonant frequency is launched by first antenna branch 11 and the second antenna branch 12, another resonant frequency is launched by the first passive antenna branch 313 or the second passive antenna branch 323, first antenna branch 11 and the second antenna branch 12 can be tuned in low-frequency range, the tuning that first passive antenna branch 313 or the second passive antenna branch 323 produce simultaneously can be high band；First antenna branch 11 and the second antenna branch 12 can also be tuned in high band, and the first passive antenna branch 313 or 323, the second passive antenna branch produce is tuned in low-frequency range.Preferably, general first antenna branch 11 and the second antenna branch 12 produce resonance and are in low-frequency range f1, and the first passive antenna branch 313 or the resonance of the second passive antenna branch 323 are in high band f2.Corresponding antenna standing wave as shown in Figure 10, low-frequency range f1 and high band f2.

In the embodiment of the present invention, control the first switch switches over pin with second switch and is connected, if first switch connection the first match circuit 312, second switch disconnects the connection with the second match circuit 322 simultaneously, then high frequency f2 is launched by the first passive antenna branch 313, therefore radio-frequency (RF) energy is distributed mainly in the first passive antenna branch 313 (antenna end is in the first passive antenna branch 313 side).And low frequency f1 is owing to being affected by the close coupling of the first passive antenna branch 313, be equivalent to be loaded with the small capacitances on ground, low frequency f1 resonant frequency will be caused to reduce, now the first antenna branch 11 toward antenna radiator 1 is concentrated by radio-frequency (RF) energy, the radio-frequency (RF) energy controlling low frequency f1 and high frequency f2 flows to, as shown in figure 11, the radio-frequency (RF) energy of the f1 ＇ in accompanying drawing is respectively smaller than the radiofrequency signal that f1, f1 ＇ from f is the same frequency of intensity distributions in different branches.

In like manner, control second switch and connect the second match circuit 322, first switch off and the connection of the first passive antenna branch 313312 simultaneously, then high frequency f2 is launched by the second passive antenna branch 323, therefore radio-frequency (RF) energy is distributed mainly on the second passive antenna branch 323 (antenna end is in the second passive antenna branch 323 side).And low frequency f1 is owing to being affected by the close coupling of the second passive antenna branch 323, be equivalent to be loaded with the small capacitances on ground, low frequency f1 resonant frequency will be caused to reduce, the second antenna branch 12 toward antenna radiator 1 is concentrated by the last radio-frequency (RF) energy that also obtains, also the radio-frequency (RF) energy controlling low frequency f1 and high frequency f2 flows to, and then will corresponding different switching so that two resonant frequency low frequency f1 and the equal performance of high frequency f2 are good, hold frequency deviation few, solve the problem held of death.

Concrete, as it is shown in figure 9, this first switch is the first single-pole single-throw switch (SPST) 311；This second switch is the second single-pole single-throw switch (SPST) 321；This first match circuit 312 ground connection and this second match circuit 322 ground connection.Further, the first antenna branch 11 of above-mentioned antenna radiator 1 and the second antenna branch 12 of above-mentioned antenna radiator 1 are respectively monopole antenna, may be located at the left and right sides of terminal.

As shown in figure 13, the distinctive points of this Figure 13 is that parasitic branch is G type antenna to concrete connected mode, has balancing head fingerprint characteristic and the frequency-adjustable characteristic of double frequency.This above-mentioned first antenna branch 11 and above-mentioned second antenna branch 12, launch high frequency f2, difference is, above-mentioned first passive antenna branch 313 or above-mentioned second passive antenna branch 323 are in addition to launching resonance in low-frequency range, also launch a resonant frequency at high band, expand the beamwidth of antenna further.

Control the first single-pole single-throw switch (SPST) 311 in the embodiment of the present invention disconnects the connection with the first match circuit 312, second single-pole single-throw switch (SPST) 321 is connected and is connected with the second match circuit 322, second passive antenna branch 323 couples with the second antenna branch 12 of antenna radiator 1, the first radiofrequency signal is launched from the second antenna branch 12, and then radio-frequency (RF) energy is assembled on the second antenna branch 12 of antenna radiator 1, or the 4th radiofrequency signal of second frequency is launched from the second passive antenna branch 323, and then radio-frequency (RF) energy is assembled in the second passive antenna branch 323；In like manner, by controlling connecting and the connection of the first match circuit 312 of the first single-pole single-throw switch (SPST) 311, second single-pole single-throw switch (SPST) 321 disconnects and being connected with the second match circuit 322, realize launching the first radiofrequency signal from first antenna branch 11, and then radio-frequency (RF) energy is assembled in the first antenna branch 11 of antenna radiator 1, or launch the 3rd radiofrequency signal of second frequency from the first passive antenna branch 313, and then radio-frequency (RF) energy is assembled in the first passive antenna branch 313.So by controlling the first single-pole single-throw switch (SPST) 311 and the switching of second switch, carry out launching the radio frequency of different frequency, meet the switching to the antenna end launching radiofrequency signal, decrease mould at hand and absorb, reduce the decline of signal.

Concrete, as shown in figure 11, this first switch is the first single pole multiple throw 314；This second switch is the second single pole multiple throw 324；This first match circuit 312 includes the 3rd match circuit 315 of multiple different ground connection；This second match circuit 322 includes the 4th match circuit 325 of multiple different ground connection.

It should be understood that the 3rd match circuit 315 is identical with the 4th match circuit 325 one_to_one corresponding.

In the embodiment of the present invention, control the first single pole multiple throw 314 and disconnect the connection with the 3rd match circuit 315, and the second single pole multiple throw 324 connects the connection with the 4th match circuit 325, so that the second passive antenna branch 323 couples with the second antenna branch 12 of antenna radiator 1, and then radio-frequency (RF) energy is assembled on the second antenna branch 12 of antenna radiator 1, or launch the 4th radiofrequency signal of second frequency from the second passive antenna branch 323, and then radio-frequency (RF) energy is assembled in the second passive antenna branch 323；nullIn like manner，The second single pole multiple throw 324 is switched to disconnect and the connection of the 4th match circuit 325 by controlling to connect to be connected with the 4th match circuit 325 by the second single pole multiple throw 324 by the second single pole multiple throw 324，And the first single pole multiple throw 314 connects the connection with the 3rd match circuit 315，Realize launching the first radiofrequency signal from the second antenna branch 11，And then radio-frequency (RF) energy is assembled in the first antenna branch 11 of antenna radiator 1，Or the 3rd radiofrequency signal of second frequency is launched from the first passive antenna branch 313，And then radio-frequency (RF) energy is assembled in the first passive antenna branch 313，So can realize the switching to the antenna end launching radiofrequency signal，Decrease mould at hand to absorb，Reduce the decline of signal，And the existence by multiple match circuits，Not only widen the bandwidth of antenna，Also achieve frequency-adjustable function.

Concrete, as shown in figure 11, two the 3rd match circuits 315 are specially first the 3rd match circuit M1 and second the 3rd match circuit M2, and two the 4th match circuits 325 are specially first the 4th match circuit M1 and second the 4th match circuit M2.First the 3rd match circuit M1 is connected at the first single pole multiple throw 314, after second single pole multiple throw 324 disconnects the connection with first the 4th match circuit M1 and second the 4th match circuit M2 simultaneously, again the first single pole multiple throw 314 is connected second the 3rd match circuit M2, second single pole multiple throw 324 disconnects the connection (that is switching the first single pole multiple throw 314 and multiple 3rd match circuit connection status) with first the 4th match circuit M1 and second the 4th match circuit M2 simultaneously, then resonant frequency low frequency f1 and high frequency f2 offsets.Now, the arbitrary termination fingerprint performance that there is the first antenna branch 11 of this antenna radiator 1 and the second antenna branch 12 is good, other end fingerprint poor performance.nullIn like manner，First the 4th match circuit M1 is connected at the second single pole multiple throw 324，After first single pole multiple throw 314 disconnects and being connected with first the 3rd match circuit M1 and second the 3rd match circuit M2 simultaneously，Again the second single pole multiple throw 324 is connected second the 4th match circuit M2，First single pole multiple throw 314 disconnects and is connected (that is switching the second single pole multiple throw 324 and multiple 3rd match circuit connection status) with first the 3rd match circuit M1 and second the 3rd match circuit M2 simultaneously，Then resonant frequency f1 and f2 be also same skew (as shown in figure 12，Dotted line is resonant frequency rate f1 after skew and f2)，Now，The arbitrary termination fingerprint performance that there is also the first antenna branch 11 of this antenna radiator 1 and the second antenna branch 12 is good，Other end fingerprint poor performance.

It should be understood that the 3rd match circuit 315 is identical with the 4th match circuit 325 one_to_one corresponding.Can be specifically that first, second, third and fourth match circuit 325 is any circuit realizing coupling, such as be build-out resistor, but do not limit at this.

Second embodiment

As shown in figure 14, this antenna system is with the difference of first embodiment, and the antenna system being somebody's turn to do also includes: sense sensor 71 and first controller 72 of thing to be detected；

Wherein, the outfan of this sensor 71 is connected with the input of this first controller 72, and the outfan of this first controller 72 is connected with this first switch and this second switch respectively；

This sensor 71 senses this thing to be detected, the induced signal of output one this thing to be detected gives this first controller 72, this first controller 72 compares with the thing preset to be detected in preset switching according to this induced signal, in output one this preset switching, first switching signal that control switching corresponding with this thing to be detected, control one to switch off according to this first switching signal, another switch connection, control this antenna system by this first switching signal and be in this first connection status or this second connection status.

Above-mentioned preset switching refer to beforehand through detect this thing to be detected be positioned at terminal time, and when multiple radiofrequency signal has a relatively strong radiofrequency signal, the switching mode concrete to inductive switch so that terminal is in the first connection status or the second connection status.This preset thing to be detected refers to the left hand of user, the right hand, terminal point or other contacts or close without object (such as, support etc.).Concrete preset switching may refer to when thing to be detected is left hand, this antenna system is in the first connection status, can also be when thing to be detected is left hand, this antenna system is in the second connection status, illustrate in like manner for the right hand, but in this no limit, it is determined according to detection in advance.

In the embodiment of the present invention, the thing to be detected obtained by sensor 71, and produce the first switching signal according to thing to be detected and preset switching, and then switched over by the first switching signal, the most simple to operate, and can be by sensing the right-hand man of user, keep connecting according to good antenna branch by modulus at hand, the switching to the antenna end launching radiofrequency signal can not only be realized, decrease mould at hand and absorb, reduce the decline of signal.

It should be understood that this sensor 71 includes the sensor that capacitively coupled sensor, acceleration transducer, gravity sensor, gyroscope or electronic compass are angularly correlated with.

Concrete application scenarios is as follows.

First, detect the thing to be detected on user terminal according to sensor 71, determine it is to use left hand handheld terminal.

Then, it is determined that left hand handheld terminal, then compare with the thing preset to be detected in preset switching, determine that the first switching signal in this preset switching, the such as first switching signal are that antenna system is in the second connection status.

Finally, the first controller 72, according to the first switching signal, controls first and switches off and the connection of the first match circuit 312, and second switch connects the connection with the second match circuit 322.

3rd embodiment

As shown in figure 15, this antenna system is with the difference of first embodiment, between this feeder equipment 21 and this feed 22, there is a feed point, this antenna system also includes: detection control circuit 5, the input of this detection control circuit 5 is connected with this feed point, and the outfan of this detection control circuit 5 is connected with this first switch and this second switch respectively.

Above-mentioned detection control circuit 5 is for detecting signal to be detected the output switching signal of input, this switching signal is to be produced by detection control circuit 5 (such as Figure 14 to Figure 17), concrete couples with first antenna branch 11, or couples with the second antenna branch 12, all relevant with switching signal；Above-mentioned detection control circuit 5 is for the above-mentioned switching signal of the detection generation of detection, the detection of radiofrequency signal or the standing-wave ratio being molded as radio-frequency (RF) energy change at hand.

Above-mentioned signal to be detected is that terminal needs the signal that detectable substance exists, and such as terminal has hands or head block, and is then detected by terminal needing the signal of detectable substance.The impact of antenna radiator 1, from the distance of antenna radiator 1, is inversely proportional to by this thing to be detected general with this thing to be detected.

In the embodiment of the present invention, control the connection of the first switch by detection control circuit 5 and second switch disconnects and the connection of the second match circuit 322 so that antenna system is in the first connection status；Or the connection and first being controlled second switch by detection control circuit 5 is switched off and the connection of the first match circuit 312, antenna system is made to be in the second connection status, so that launching from first antenna branch 11 or the second antenna branch 12, or the first passive antenna branch 313 or the second passive antenna branch 323 launch, so can realize launching radiofrequency signal by control the first coupling circuit 31 or the second coupling circuit 32, realize the switching to the antenna end launching radiofrequency signal, decrease mould at hand to absorb, reduce the decline of signal.

4th embodiment

As shown in figure 16, this antenna system is with the difference of the second embodiment, and this detection control circuit 5 includes: this detection control circuit includes: the first detector 81, first processor 82 and second controller 83；

Wherein, the input of this first detector 81 is connected with this feed point, the outfan of this first detector 81 is connected with the input of this first processor 82, the outfan of this first processor 82 is connected with the input of this second controller 83, and the outfan of this second controller 83 this first switch and this second switch respectively connect；

nullThis first detector 81 detects the first radio-frequency (RF) energy receiving radiofrequency signal at this feed point when this antenna system is in this first connection status，And export the first detection signal to this first processor 82，This first processor 82 stores this first detection signal，This first detector 81 detects the second radio-frequency (RF) energy receiving radiofrequency signal at this feed point when this antenna system is in this second connection status，And export one second detection signal to this first processor 82，This first processor 82 stores this second detection signal，This first processor 82 judges this first detection signal and this second detection signal stored，First process signal of the connection status that output the last one radio-frequency (RF) energy is corresponding gives this second controller 83，This second controller 83 is according to this first process signal，Produce a switch connection of connection status corresponding to this stronger radio-frequency (RF) energy of control、Another the second switching signal switched off，Control this antenna system by this second switching signal and be in this first connection status or this second connection status.

The above-mentioned signal of detection more by force may refer to receive at this feed point when this antenna system is in this first connection status the first radio-frequency (RF) energy of radiofrequency signal and receives in the first radio-frequency (RF) energy of radiofrequency signal at this feed point time this antenna system is in this first connection status, less than the detection signal detecting the most by force signal, the detection signal of the embodiment of the present invention can also be to detect the most by force signal, concrete implementation mode is identical with the principle of the 3rd embodiment.

In the embodiment of the present invention, receive the first radio-frequency (RF) energy of radiofrequency signal at this feed point when being in this first connection status by detecting this antenna system and at this feed point time this antenna system is in this second connection status, receive the second radio-frequency (RF) energy of radiofrequency signal, control antenna system and be in the first connection status or the second connection status, so can automatically switch to the antenna branch that radio-frequency (RF) energy is strong, improve Consumer's Experience effect.

Concrete, controlling the first switch conduction the first match circuit 312 or the 3rd match circuit 315 by the second switching signal, control second switch simultaneously and disconnect, connection status now is the first connection status, and detection reception radio-frequency (RF) energy at that time is assumed to T1.Subsequent time, controls first and switches off connection, controls second switch simultaneously and turns on the first match circuit 312 or the 3rd match circuit 315, and connection status now is the second connection status, and detection receives radio-frequency (RF) energy and is assumed to T2.Contrast T1 and T2, the number of the winning the confidence connection status that the superior is corresponding is dbjective state, and switches to the connection status of correspondence.So can realize launching radiofrequency signal by control the first coupling circuit 31 or the second coupling circuit 32, signal is switched to the stronger antenna branch of radio-frequency (RF) energy or passive antenna branch, realize the switching to the antenna end launching radiofrequency signal, decrease mould at hand to absorb, reduce the decline of signal.

5th embodiment

As shown in figure 17, in this antenna system, this detection control circuit 5 includes: the second detector the 91, second processor 92 and the 3rd controller 93；

Wherein, the input of this second detector 91 is connected with this feed point, the outfan of this second detector 91 is connected with the input of this second processor 92, the outfan of this second processor 92 is connected with the input of the 3rd controller 93, and the outfan of the 3rd controller 93 this first switch and this second switch respectively connect；

nullThis second detector 91 detects the first variable quantity transmitting standing-wave ratio at this feed point when this antenna system is in this first connection status，And export the 3rd detection signal to this second processor 92，This second processor 92 stores the 3rd detection signal，This second detector 91 detects the second variable quantity transmitting standing-wave ratio at this feed point when this antenna system is in this second connection status，And export the 4th detection signal to this second processor 92，This second processor 92 stores the 4th detection signal，This second processor 92 judges the 3rd detection signal and the 4th detection signal stored，Export the second process signal of connection status of a less correspondence of standing-wave ratio variable quantity to the 3rd controller 93，3rd controller 93 is according to this second process signal，Produce a switch connection of the connection status of this less correspondence of standing-wave ratio variable quantity of control、Another the 3rd switching signal switched off，Control this antenna system by the 3rd switching signal and be in this first connection status or this second connection status.

After the second variable quantity that less the first variable quantity that may refer to detection detection standing-wave ratio of above-mentioned standing-wave ratio variable quantity detects this standing-wave ratio with detection compares, variable quantity is less, the embodiment of the present invention can also be that the variable quantity of standing-wave ratio is maximum, and concrete implementation mode is identical with the principle of the 5th embodiment.

In the embodiment of the present invention, second detector 91 is to detect the variable quantity of standing-wave ratio at the antenna feed point of the first connection status and the second connection status respectively, then produces the 3rd switching signal by the relation (standing-wave ratio difference is the least, and head fingerprint data are the highest) of standing-wave ratio difference with head fingerprint data.Specifically, at the Antenna Design initial stage, switching the first connection status and the second connection status respectively, record and store the standing wave ratio of free space (not having head or the close state of hands) condition, V0 and V1 is as original standing-wave ratio.Right overhead or during hands approaching device, the standing-wave ratio detected can change, after exceeding certain error tolerance limit, start switching the first connection status and the second connection status, sampling obtains standing-wave ratio V2 and V3, V2 Yu V0, V3 Yu V1 are contrasted, difference little for target connection status, and switch to this connection status (i.e., if the free space of the first connection status and the variable quantity adding hands are less than the free space of the second connection status and the variable quantity adding hands, then target connection status is the first connection status).So produce the 3rd switching signal by detection standing-wave ratio, can realize controlling the first coupling circuit 31 or coupling of the second coupling circuit 32, thus realize the switching to the antenna end launching radiofrequency signal, decrease mould at hand and absorb, also reduce the decline of signal.

Sixth embodiment

Sixth embodiment of the invention provides a kind of terminal, including circuit printing plate and the antenna system described above that is arranged on this circuit printing plate.

It should be understood that this terminal is plastic frame shell, metal frame shell, all-metal battery cover or all-metal battery cover strip side metal binding structure.

This sensor includes capacitively coupled sensor or angular transducer.

In the embodiment of the present invention, can can use capacitively coupled sensor by the sensor detection right-hand man in terminal, be placed on both sides, complete machine lower end, when hands is close or holds sensor, it is left hand or the right hand according to the diversity judgement of left and right sides capacitance.

It addition, sensor detection right-hand man can also utilize angular transducer.

After having judged left hand or the right hand by this detection mode, switching signal can be produced.Such as selecting left head hands data preferable connection status during left hand is target switching state.

The sensor that terminal has angularly been correlated with acceleration transducer, gravity sensor, gyroscope, electronic compass the most now.Therefore there is reduction cost, design is simple, and switching judging is accurate, quickly judges the advantage switching (ageing higher).

This terminal is applicable not only to fingerprint situation together, it is also possible to be applicable to the situation of one hand or single head.

7th embodiment

As shown in figure 18, this terminal is with the difference of sixth embodiment, also include: around the metal edge frame of this terminal surrounding side, antenna radiator 1 is arranged on a side frame of a side frame of the length direction of this metal edge frame or the width of this metal edge frame, and the residue frame of this metal edge frame is connected with mainboard ground 6.

It should be understood that above-mentioned antenna system is preferably provided at the lower end (this lower end refers to when user's vertical screen mode uses terminal, one end that terminal is nearer relative to ground distance) of this terminal.

nullAlso have，This terminal can work in different antenna bands as required，Such as GSM (GlobalSystemforMobileCommunication，Global system for mobile communications) high band such as low-frequency range or GSM1800/GSM1900 or the different systems GSM/TD-SCDMA (TimeDivision-SynchronousCodeDivisionMultipleAccess such as 850/GSM900，The CDMA of time division synchronous)/WCDMA (WidebandCodeDivisionMultipleAccess，WCDMA)/LTE (LongTermEvolution，Long Term Evolution) etc..

Accordingly due to the antenna system of the embodiment of the present invention, being applied to terminal, therefore, the embodiment of the present invention additionally provides a kind of terminal, and wherein, this of above-mentioned antenna system realizes embodiment all be applicable to the embodiment of this terminal, also can reach identical technique effect.

8th embodiment

As shown in figure 19, the eighth embodiment of the present invention provides the control method of a kind of radiofrequency signal, is applied to an antenna system, including:

Step 191, obtains the radiofrequency signal of signal generating circuit generation to having first antenna branch 11 and the antenna radiator 1 of the second antenna branch 12；

Step 192, control to be of coupled connections with this first antenna branch 11 first couple circuit 31 and be of coupled connections with this second antenna branch 12 second couple circuit 32 and switch the connection status of this antenna system, wherein, this connection status includes the first connection status of this antenna system and the second connection status of this this antenna system, wherein

This first connection status is that this first coupling circuit 31 couples disconnection with this first antenna branch 11, this first antenna branch 11 launches the first radiofrequency signal, and this second coupling circuit 32 is of coupled connections with this second antenna branch 12, this second antenna branch 12 launches the second radiofrequency signal, and the radio-frequency (RF) energy of this first radiofrequency signal is less than the radio-frequency (RF) energy of this second radiofrequency signal；

This second connection status is that this first coupling circuit 31 is of coupled connections with this first antenna branch 11, this first antenna branch 11 launches the first radiofrequency signal, and this second coupling circuit 32 couples disconnection with this second antenna branch 12, this second antenna branch 12 launches the second radiofrequency signal, and the radio-frequency (RF) energy of this first radiofrequency signal is more than the radio-frequency (RF) energy of this second radiofrequency signal.

In the step 191 of the embodiment of the present invention and step 192, control first antenna branch 11 launches the first radiofrequency signal and the second antenna branch 12 launches the second radiofrequency signal；Or control first antenna branch 11 launches the first radiofrequency signal and the second antenna branch 12 launches the second radiofrequency signal so that radiofrequency signal can be launched from different antenna branch；Such as terminal is at hand when first antenna branch 11, and the second antenna branch 12 controlling to couple circuit 32 coupling with second launches the second radiofrequency signal；In like manner, such as terminal is at hand when the second antenna branch 12, and the first antenna branch 11 controlling to couple circuit 31 coupling with first launches the first radiofrequency signal, so can reduce the decline of signal, improve radio-frequency (RF) energy.

9th embodiment

The control method of the radiofrequency signal of ninth embodiment of the invention is with the difference of the 8th embodiment, also includes:

Step 1921, obtains the signal to be detected sensing thing to be detected；

Step 1922, this signal to be detected is compared with the thing preset to be detected in preset switching, in output one this preset switching, corresponding with this thing to be detected the first control instruction controlling switching, controls this first coupling circuit 31 according to this first control instruction and second couples circuit 32 with this and switch the connection status of this antenna system.

In the embodiment of the present invention, obtain the signal to be detected of thing to be detected, and produce the first control instruction according to thing to be detected and preset switching, and then switched over by the first control instruction, the most simple to operate, and can be by sensing the right-hand man of user, keep connecting according to good antenna branch by modulus at hand, the switching to the antenna end launching radiofrequency signal can not only be realized, decrease mould at hand and absorb, reduce the decline of signal.

Tenth embodiment

The control method of the radiofrequency signal of tenth embodiment of the invention is with the difference of the 8th embodiment, and step 192 includes:

Step 1923, detects the first radio-frequency (RF) energy receiving radiofrequency signal when this antenna system is in this first connection status, output the first detection signal；And

Step 1924, detects the second radio-frequency (RF) energy receiving radiofrequency signal when this antenna system is in this second connection status, output the second detection signal；

Step 1925, relatively this first detection signal and this second detection signal, produce one to be coupled with place antenna branch by a coupling control circuit 31 of connection status corresponding for stronger radio-frequency (RF) energy, another coupling control circuit 32 and place antenna branch disconnect the second control instruction couple, control this by this second control instruction and first couple circuit 31 and second couple circuit 32 with this and switch the connection status of this antenna system.

In the embodiment of the present invention, control the first coupling circuit 31 by the second control instruction and be in different states from the second coupling circuit 32, so that the radiofrequency signal that signal generating circuit 2 produces sends from first antenna branch 11 or the second antenna branch 12, or make from the first passive antenna branch 313 or the second passive antenna branch 323, so can realize launching radiofrequency signal by control the first coupling circuit 31 or the second coupling circuit 32, realize the switching to the antenna end launching radiofrequency signal, decrease mould at hand to absorb, reduce the decline of signal.

11st embodiment

The control method of the radiofrequency signal of eleventh embodiment of the invention is with the difference of the 8th embodiment, and step 192 includes:

Step 1926, detects the first variable quantity of transmission standing-wave ratio when this antenna system is in this first connection status, output the 3rd detection signal；And

Step 1927, detects the second variable quantity of transmission standing-wave ratio when this antenna system is in this second connection status, output the 4th detection signal；

Step 1928, according to the 3rd detection signal and the 4th detection signal, produce and a coupling control circuit of the connection status of less for standing-wave ratio variable quantity correspondence is coupled with place antenna branch, another coupling control circuit and place antenna branch disconnect the 3rd control instruction couple, control this by the 3rd control instruction and first couple circuit 31 and second couple circuit 32 with this and switch the connection status of this antenna system.

In the embodiment of the present invention, produce the 3rd control instruction by the relation (standing-wave ratio difference is the least, and head fingerprint data are the highest) of standing-wave ratio difference Yu head fingerprint data.Specifically, at the Antenna Design initial stage, switching the first connection status and the second connection status respectively, record and store the standing wave ratio of free space (not having head or the close state of hands) condition, V0 and V1 is as original standing-wave ratio.Right overhead or during hands approaching device, the standing-wave ratio detected can change, after exceeding certain error tolerance limit, start switching the first connection status and the second connection status, sampling obtains standing-wave ratio V2 and V3, V2 Yu V0, V3 Yu V1 are contrasted, difference little for target connection status, and switch to this connection status.So produce the 3rd control instruction by detection standing-wave ratio, can realize controlling the first coupling circuit 31 or coupling of the second coupling circuit 32, thus realize the switching to the antenna end launching radiofrequency signal, decrease mould at hand and absorb, also reduce the decline of signal.

It should be noted that the control method of the radiofrequency signal of present invention offer is the method for application antenna system, all embodiments of the most above-mentioned antenna system are all applicable to the method, and all can reach same or analogous beneficial effect.

What each embodiment in this specification 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.

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.

This is the preferred embodiment of the present invention above; it should be pointed out that, for those skilled in the art, on the premise of without departing from this principle of the present invention; can also make some improvements and modifications, these improvements and modifications also should be regarded as protection scope of the present invention.

Claims

1. an antenna system, it is characterised in that including:

Antenna system the most according to claim 1, it is characterised in that

Described first coupling circuit includes: the first switch, at least one first match circuit and the first passive antenna branch being connected with described first switch；

Wherein, described first switches off and the connection of described first match circuit, and described first antenna branch described first radiofrequency signal of transmitting and described first passive antenna branch do not launch the 3rd radiofrequency signal of second frequency；Or

Described first switch connection and the connection of described first match circuit, described first passive antenna branch couples with described first antenna branch, launching described first radiofrequency signal from described first antenna branch, the radio-frequency (RF) energy of described first antenna branch first frequency is more than the radio-frequency (RF) energy of described first passive antenna branch first frequency；Or launch the 3rd radiofrequency signal of second frequency from described first passive antenna branch, the radio-frequency (RF) energy of described first passive antenna branch second frequency is more than the radio-frequency (RF) energy of described first antenna branch second frequency.

Antenna system the most according to claim 2, it is characterised in that

Described second coupling circuit includes: second switch, at least one second match circuit and the second passive antenna branch being connected with described second switch；

Wherein, described first switch connection and the connection of described first match circuit, described second switch disconnects the connection with described second match circuit, described first passive antenna branch couples with described first antenna branch, launching described first radiofrequency signal from described first antenna branch, the radio-frequency (RF) energy of described first antenna branch first frequency is more than the radio-frequency (RF) energy of described first passive antenna branch first frequency；Or launch the 3rd radiofrequency signal of second frequency from described first passive antenna branch, the radio-frequency (RF) energy of described first passive antenna branch second frequency is more than the radio-frequency (RF) energy of described first antenna branch second frequency；Or

Described second switch connects the connection with described second match circuit, described first switches off and the connection of described first match circuit, described second passive antenna branch couples with described second antenna branch, launching described second radiofrequency signal from described second antenna branch, the radio-frequency (RF) energy of described second antenna branch first frequency is more than the radio-frequency (RF) energy of described second passive antenna branch first frequency；Or launch the 4th radiofrequency signal of second frequency from described second passive antenna branch, the radio-frequency (RF) energy of described second passive antenna branch second frequency is more than the radio-frequency (RF) energy of described second antenna branch second frequency.

Antenna system the most according to claim 3, it is characterised in that

Described first switch is the first single-pole single-throw switch (SPST)；

Described second switch is the second single-pole single-throw switch (SPST)；

Described first match circuit ground connection；

Described second match circuit ground connection.

Antenna system the most according to claim 3, it is characterised in that

Described first switch is the first single pole multiple throw；

Described second switch is the second single pole multiple throw；

Described first match circuit includes the 3rd match circuit of multiple different ground connection；

Described second match circuit includes the 4th match circuit of multiple different ground connection.

Antenna system the most according to claim 3, it is characterised in that described antenna system also includes: sense sensor and first controller of thing to be detected；

Wherein, the outfan of described sensor is connected with the input of described first controller, and the outfan of described first controller is connected with described first switch and described second switch respectively；

Described sensor sensing is to described thing to be detected, described in output one, the induced signal of thing to be detected gives described first controller, described first controller compares with the thing preset to be detected in preset switching according to described induced signal, in preset switching described in output one, first switching signal that control switching corresponding with described thing to be detected, control one to switch off according to described first switching signal, another switch connection, control described antenna system by described first switching signal and be in described first connection status or described second connection status.

Antenna system the most according to claim 3, it is characterised in that one end of described signal generating circuit is connected between described first antenna branch and described second antenna branch, the other end ground connection of described signal generating circuit.

Antenna system the most according to claim 7, it is characterised in that described signal generating circuit includes feed and the feeder equipment being connected with described feed；

Wherein, one end ground connection of described feed, the other end of described feed is connected to one end of described feeder equipment, and the other end of described feeder equipment is connected to described antenna radiator；

The radiofrequency signal that the feed of described signal generating circuit produces, is sent to described antenna radiator by described feeder equipment.

Antenna system the most according to claim 8, it is characterised in that described feeder equipment is directly connected to described antenna radiator.

Antenna system the most according to claim 8, it is characterised in that described feeder equipment is of coupled connections with described antenna radiator.

11. antenna systems according to claim 8, it is characterised in that there is between described feeder equipment and described feed a feed point, described antenna system also includes:

Detection control circuit, the input of described detection control circuit is connected with described feed point, and the outfan of described detection control circuit is connected with described first switch and described second switch respectively.

12. antenna systems according to claim 11, it is characterised in that described detection control circuit includes: the first detector, first processor and second controller；

Wherein, the input of described first detector is connected with described feed point, the outfan of described first detector is connected with the input of described first processor, the outfan of described first processor is connected with the input of described second controller, and the most described first switch of the outfan of described second controller and described second switch connect；

nullDescribed first detector detects the first radio-frequency (RF) energy receiving radiofrequency signal at described feed point when described antenna system is in described first connection status，And export the first detection signal to described first processor，The described first detection signal of described first processor storage，Described first detector detects the second radio-frequency (RF) energy receiving radiofrequency signal at described feed point when described antenna system is in described second connection status，And export one second detection signal to described first processor，The described second detection signal of described first processor storage，Described first processor judges that the described first detection signal stored detects signal with described second，First process signal of the connection status that output the last one radio-frequency (RF) energy is corresponding gives described second controller，Described second controller processes signal according to described first，Produce a switch connection of connection status corresponding to stronger radio-frequency (RF) energy described in a control、Another the second switching signal switched off，Control described antenna system by described second switching signal and be in described first connection status or described second connection status.

13. antenna systems according to claim 11, it is characterised in that described detection control circuit includes: the second detector, the second processor and the 3rd controller；

Wherein, the input of described second detector is connected with described feed point, the outfan of described second detector is connected with the input of described second processor, the outfan of described second processor is connected with the input of described 3rd controller, and the most described first switch of the outfan of described 3rd controller and described second switch connect；

nullDescribed second detector detects the first variable quantity transmitting standing-wave ratio at described feed point when described antenna system is in described first connection status，And export the 3rd detection signal to described second processor，The described 3rd detection signal of described second processor storage，Described second detector detects the second variable quantity transmitting standing-wave ratio at described feed point when described antenna system is in described second connection status，And export the 4th detection signal to described second processor，The described 4th detection signal of described second processor storage，Described second processor judges that the described 3rd detection signal and the described 4th stored detects signal，Export the second process signal of connection status of a less correspondence of standing-wave ratio variable quantity to described 3rd controller，Described 3rd controller processes signal according to described second，Produce a switch connection of the connection status of a described less correspondence of standing-wave ratio variable quantity of control、Another the 3rd switching signal switched off，Control described antenna system by described 3rd switching signal and be in described first connection status or described second connection status.

14. according to the antenna system described in any one of claim 3 to 12, it is characterised in that described first passive antenna branches into G type antenna, and described second passive antenna branches into G type antenna.

15. 1 kinds of terminals, including circuit printing plate, it is characterised in that described terminal also includes: the antenna system as described in any one of claim 1 to 14 being arranged on described circuit printing plate.

16. terminals according to claim 15, it is characterized in that, also include: around the metal edge frame of described terminal surrounding side, antenna radiator is arranged on a side frame of a side frame of the length direction of described metal edge frame or the width of described metal edge frame, and the residue frame of described metal edge frame is connected with mainboard ground.

The control method of 17. 1 kinds of radiofrequency signals, is applied to an antenna system, it is characterised in that including:

Described first connection status is that described first coupling circuit couples disconnection with described first antenna branch, described first antenna branch launches the first radiofrequency signal of first frequency, and described second coupling circuit be of coupled connections with described second antenna branch, described second antenna branch launches the second radiofrequency signal of first frequency, and the radio-frequency (RF) energy of described first radiofrequency signal is less than the radio-frequency (RF) energy of described second radiofrequency signal；Or

Described second connection status is that described first coupling circuit is of coupled connections with described first antenna branch, described first antenna branch launches described first radiofrequency signal, and described second coupling circuit couple disconnection with described second antenna branch, described second antenna branch launches described second radiofrequency signal, and the radio-frequency (RF) energy of described first radiofrequency signal is more than the radio-frequency (RF) energy of described second radiofrequency signal.

The control method of 18. radiofrequency signals according to claim 17, it is characterised in that also include:

Obtain the signal to be detected sensing thing to be detected；

Described signal to be detected is compared with the thing preset to be detected in preset switching, in preset switching described in output one, first control instruction that control switching corresponding with described thing to be detected, controls described first coupling circuit according to described first control instruction and couples the connection status of the circuit described antenna system of switching with described second.

The control method of 19. radiofrequency signals according to claim 17, it is characterised in that the step of the connection status that described control first couples circuit and the second coupling circuit described antenna system of switching includes:

Detect the first radio-frequency (RF) energy receiving radiofrequency signal when described antenna system is in described first connection status, output the first detection signal；And

Detect the second radio-frequency (RF) energy receiving radiofrequency signal when described antenna system is in described second connection status, output the second detection signal；

The most described first detection signal and described second detection signal, produce one to be coupled with place antenna branch by a coupling control circuit of connection status corresponding for stronger radio-frequency (RF) energy, another coupling control circuit disconnects, with place antenna branch, the second control instruction coupled, and controls described first coupling circuit by described second control instruction and couples the connection status of the circuit described antenna system of switching with described second.

The control method of 20. radiofrequency signals according to claim 17, it is characterised in that the step of the connection status that described control first couples circuit and the second coupling circuit described antenna system of switching includes:

Detect the first variable quantity of transmission standing-wave ratio when described antenna system is in described first connection status, output the 3rd detection signal；And

Detect the second variable quantity of transmission standing-wave ratio when described antenna system is in described second connection status, output the 4th detection signal；

According to described 3rd detection signal and described 4th detection signal, produce and a coupling control circuit of the connection status of less for standing-wave ratio variable quantity correspondence is coupled with place antenna branch, another coupling control circuit disconnects, with place antenna branch, the 3rd control instruction coupled, and controls described first coupling circuit by described 3rd control instruction and couples the connection status of the circuit described antenna system of switching with described second.