WO2018058409A1 - 天线系统及终端、信号处理方法及系统 - Google Patents

天线系统及终端、信号处理方法及系统 Download PDF

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Publication number
WO2018058409A1
WO2018058409A1 PCT/CN2016/100740 CN2016100740W WO2018058409A1 WO 2018058409 A1 WO2018058409 A1 WO 2018058409A1 CN 2016100740 W CN2016100740 W CN 2016100740W WO 2018058409 A1 WO2018058409 A1 WO 2018058409A1
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WIPO (PCT)
Prior art keywords
antenna
switch
terminal
distance
user
Prior art date
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PCT/CN2016/100740
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English (en)
French (fr)
Inventor
赵启明
饶佩宗
Original Assignee
深圳天珑无线科技有限公司
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Priority to PCT/CN2016/100740 priority Critical patent/WO2018058409A1/zh
Publication of WO2018058409A1 publication Critical patent/WO2018058409A1/zh

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/28—Combinations of substantially independent non-interacting antenna units or systems

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to an antenna system and a terminal, and a signal processing method and system.
  • the Specific Absorption Rate can be used as a measure of the electromagnetic radiation of the antenna to the human body, and its unit is W/kg or mW/kg.
  • the SAR value refers to the differentiation of the energy micro-elements absorbed (dissipated) by the mass micro-members in the volume micro-element of a given density exposed to electromagnetic radiation.
  • the United States and Europe have clearly defined the maximum SAR value allowed by the terminal, the US standard is 1.6W/kg, and the European standard is 2.0W/kg.
  • the antenna system in the prior art needs to sacrifice the certain emission performance at the cost of achieving the SAR value.
  • the embodiments of the present invention provide an antenna system, a terminal, a signal processing method, and a system, which are used to solve the problem that the transmission performance of the antenna system in the prior art and the SAR value cannot be reduced.
  • an embodiment of the present invention provides an antenna system, where the system includes:
  • the switch includes two connection points, a first connection point is connected to the first antenna, a second connection point is connected to the second antenna, and the switch is at the first connection point and the Switch between the two connection points.
  • An aspect as described above and any possible implementation further provides an implementation
  • the method further includes:
  • the antenna system provided by the embodiment of the present invention includes a first antenna, a second antenna, and a switch.
  • the switch includes two connection points. The first connection point is connected to the first antenna, and the second connection point is connected to the second antenna. Switching between the first connection point and the second connection point.
  • the switch can switch between the first antenna and the second antenna, and thus, in a unit time including at least one switching, the first antenna and the first antenna
  • the two antennas can share the task of transmitting signals together, and in the process of switching the switching switch, each antenna maintains a state of "transmitting signal - stopping transmitting signal - transmitting signal - stopping transmitting signal" in a unit time, and can The energy is evenly distributed to the two antennas.
  • the differential value of the energy radiated from each antenna to the time is halved, so that the SAR value of the antenna is reduced to half of the SAR value of the antenna in the prior art.
  • the transmission performance of the antenna in the antenna remains unchanged. Therefore, the embodiment of the present invention can solve the problem that the transmission performance of the antenna system in the prior art and the SAR value cannot be reduced.
  • an embodiment of the present invention provides a terminal, including: the antenna system described above.
  • the terminal provided by the embodiment of the present invention includes the antenna system described above.
  • the switch can switch between the first antenna and the second antenna, and thus, in a unit time including at least one switching, the first antenna and the first antenna
  • the two antennas can share the task of transmitting signals together, and in the process of switching the switching switch, each antenna maintains a state of "transmitting signal - stopping transmitting signal - transmitting signal - stopping transmitting signal" in a unit time, and can The energy is evenly distributed to the two antennas.
  • the embodiment of the present invention can solve the transmission performance of the antenna system in the prior art and reduce the SAR value. Can have both problems.
  • an embodiment of the present invention provides a signal processing method, including:
  • the switch switches between the first antenna and the second antenna at a specified rate, so that the switch passes the signal to be transmitted through the first antenna and the The second antenna is rotated in turn.
  • the switch switches between the first antenna and the second antenna at a specified rate.
  • the method further includes:
  • a sensor detects a distance between the user and the terminal
  • the senor When the distance between the user and the terminal is less than a specified distance, the sensor sends a control signal to the switch to cause the switch to be at the specified rate according to the received control signal. Switching between the first antenna and the second antenna.
  • the switch switches between the first antenna and the second antenna at a specified rate.
  • the method further includes:
  • the sensor detects a distance between the user and the terminal
  • a controller in the terminal Transmitting, by the sensor, the distance to a controller in the terminal, so that when a distance between the user and the terminal is less than a specified distance, a controller in the terminal sends a control signal to the switch And causing the switch to switch between the first antenna and the second antenna at a specified rate according to the received control signal.
  • the switch when the distance between the user and the terminal is less than the specified distance, the switch switches between the first antenna and the second antenna at a specified rate, so that the switch is to be transmitted.
  • the first antenna and the second antenna are alternately transmitted.
  • the user When the user is closer to the terminal, the user may be exposed to a larger antenna, which is harmful to the human body.
  • the switch in the antenna system is Specify rate on the first day Switching between the line and the second antenna, so that in a unit time including at least one switching, the two antennas can share the task of transmitting the signal, and, in the process of switching the switching switch, each unit time
  • the antenna will maintain the state of "transmit signal - stop transmitting signal - transmitting signal - stop transmitting signal", and can distribute energy equally to two antennas. At this time, the energy of each antenna radiating outward will have a differential value of time.
  • the embodiment of the present invention can solve the transmission performance of the antenna system in the prior art.
  • the problem of reducing the SAR value cannot be achieved.
  • the embodiment of the invention further provides a signal processing system, including:
  • a switching unit configured to switch between the first antenna and the second antenna at a specified rate when a distance between the user and the terminal is less than a specified distance, so that the switching unit passes the signal to be transmitted through the first The antenna and the second antenna transmit in turn.
  • system further comprising:
  • a detecting unit configured to detect a distance between the user and the terminal
  • a sending unit configured to send a control signal to the switching unit when a distance between the user and the terminal is less than a specified distance, so that the switching unit is at the first rate according to the received control signal at the specified rate Switching between the antenna and the second antenna.
  • the detecting unit is configured to detect a distance between the user and the terminal;
  • the sending unit is further configured to send the distance to a controller in the terminal; and, to send a control to the switching unit when a distance between the user and the terminal is less than a specified distance And a signal, wherein the switching unit switches between the first antenna and the second antenna at a specified rate according to the received control signal.
  • the embodiment of the present invention provides a signal processing system, where the switching unit is configured to switch between the first antenna and the second antenna at a specified rate when the distance between the user and the terminal is less than a specified distance, so that the switching unit is to be transmitted.
  • the signal is transmitted in turn through the first antenna and the second antenna.
  • the switch in the antenna system is The specified rate is switched between the first antenna and the second antenna.
  • the two antennas can share the task of transmitting signals, and in the process of switching the switch, Each antenna maintains the state of “transmitting signal-stop transmitting signal-transmitting signal-stop transmitting signal” per unit time, and can equally distribute energy to two antennas for transmission.
  • the energy pair radiated outward by each antenna The differential value of the time is halved, so that the SAR value of the antenna is reduced to half of the SAR value of the antenna in the prior art.
  • the transmission performance of the antenna remains unchanged.
  • the embodiment of the present invention can solve the prior art.
  • the transmission performance of the antenna system and the problem of reducing the SAR value cannot be both.
  • FIG. 1 is a first schematic diagram of an antenna system according to an embodiment of the present invention.
  • FIG. 2 is a schematic diagram of energy radiated by an antenna during transmission of a signal
  • FIG. 3 is a second schematic diagram of an antenna system according to an embodiment of the present invention.
  • FIG. 4 is a first schematic diagram of a terminal provided by an embodiment of the present invention.
  • FIG. 5 is a second schematic diagram of a terminal according to an embodiment of the present invention.
  • FIG. 6 is a third schematic diagram of a terminal according to an embodiment of the present invention.
  • FIG. 7 is a functional block diagram of a signal processing system according to an embodiment of the present invention.
  • first, second, etc. may be used to describe antennas and the like in the embodiments of the present invention, these antennas and the like should not be limited to these terms. These terms are only used to distinguish antennas and the like from each other.
  • the first antenna may also be referred to as a second antenna without departing from the scope of the embodiments of the present invention.
  • the second antenna may also be referred to as a first antenna.
  • the word “if” as used herein may be interpreted as “when” or “when” or “in response to determining” or “in response to detecting.”
  • the phrase “if determined” or “if detected (conditions or events stated)” may be interpreted as “when determined” or “in response to determination” or “when detected (stated condition or event) “Time” or “in response to a test (condition or event stated)”.
  • the SAR value is generally reduced at the expense of the antenna's transmission performance, so as to reduce the energy radiated by the human body when the antenna transmits a signal. At this time, the emission performance of the antenna is greatly affected.
  • An antenna system is provided to solve the antenna in the prior art.
  • the problem of both emission performance and reduced SAR values cannot be achieved.
  • the antenna system provided by the embodiment of the present invention may be located in a terminal.
  • the terminal involved in the embodiment of the present invention may include, but is not limited to, a wireless handheld device, a tablet computer, and a mobile phone.
  • FIG. 1 is a first schematic diagram of an antenna system according to an embodiment of the present invention.
  • the antenna system includes:
  • the changeover switch 13 includes two connection points, a first connection point A is connected to the first antenna 11, a second connection point B is connected to the second antenna 12, and the changeover switch 13 is at the first connection point A and the second connection point B. Switch between.
  • the switch 13 when the switch 13 is switched to the first connection point A, the switch 13 is in communication with the first antenna 11 .
  • the first antenna 11 can be connected through the communication.
  • the switch 13 when the switch 13 is switched to the second connection point B, the switch 13 is connected to the second antenna 12.
  • the antenna system needs to transmit a signal, it can be transmitted through the connected second antenna 12. signal.
  • the switch 13 of the antenna system can be switched between the connection point A and the connection point B, so that the switch 13 is switched. Switching may be alternately performed between the first antenna 11 and the second antenna 12 such that signals to be transmitted may be alternately transmitted through the first antenna 11 and the second antenna 12.
  • the changeover switch 13 switches between the first antenna 11 and the second antenna 12 at a specified rate.
  • the specified rate may be preset according to actual needs.
  • the specified rate may be set to 300 ms/time to 1000 ms/time, that is, the switch 13 is in the first antenna 11 and the first every 300 ms to 1000 ms.
  • a switch is made between the two antennas 12.
  • the switch 13 when the switch 13 is switched between the first antenna 11 and the second antenna 112 at a specified rate, since the switching rate is fast, the switch 13 can be in the unit time.
  • a plurality of switching is performed between an antenna 11 and the second antenna 12, during which time the first antenna 11 and the second antenna 12 are not continuously transmitting signals, and each antenna maintains a "transmit signal-stop transmission signal".
  • - a state in which a signal is transmitted
  • a signal is stopped to be transmitted, and thus, energy can be equally distributed to two antennas to be transmitted, and in this unit time, the integrated value of energy radiated by each antenna is halved, that is, The SAR value is halved. Therefore, in the antenna system provided by the embodiment of the present invention, under the premise of ensuring that the transmission performance of the antenna is constant, the peak energy of the antenna system radiated in a unit time is greatly reduced, thereby reducing the SAR value.
  • the time period includes N unit times, and N is an integer greater than 2, wherein one unit time includes a first transmission duration t1 and a second transmission duration t2, first
  • the antenna transmits a signal within a first transmission duration
  • the second antenna transmits a signal within a second transmission duration.
  • the switching switch performs a switching within the unit time, assuming that each of the two antennas in the unit time is transmitting the signal.
  • the energy radiated outward is 10W.
  • FIG. 2 is a schematic diagram of the energy radiated by the antenna during the signal transmission.
  • an antenna is used to undertake all the tasks of transmitting signals.
  • the antenna continuously transmits signals during this period of time.
  • curve A in FIG. 2 is an antenna in the prior art.
  • the energy radiated by the antenna in the process of transmitting the signal is 10W, 10W, 10W, 10W.
  • the first antenna and the second antenna are used.
  • curve B and curve C in FIG. 2 which is the first antenna radiated in the process of transmitting signals in the embodiment of the present invention.
  • Schematic diagram of energy, curve C is a schematic diagram of the energy radiated by the second antenna in the process of transmitting a signal in the embodiment of the present invention, as shown in FIG.
  • the first antenna is in the process of transmitting the signal.
  • the radiated energy is 10W, 0, 10W, 0...
  • the energy radiated by the second antenna during the signal transmission is 0, 10W, 0, 10W... Based on this, during this time period, Take one unit time as an example, if one launch time T1 and the second transmission time length t2 are equal, and the energy-time differential of each antenna is equal to half of the energy-time differential of the antenna radiated by the antenna in the prior art.
  • the antenna in the embodiment of the present invention is in the time period.
  • the SAR value is equivalent to half of the SAR value of the antenna in the prior art, that is, during this time period, the SAR received by the user includes 5W from the first antenna, and 5W from the second antenna, ie The SAR of the user is 5W, and for the antenna system, the total transmitted power is still 10W, and the transmission performance of the antenna system is not affected.
  • the transmission performance of the antenna is consistent with the transmission performance of the antenna in the prior art. .
  • the time for the switching switch 13 to perform the switching operation may be preset according to actual needs.
  • the switch 13 switches between the first antenna 11 and the second antenna 12 at a specified rate as long as the signal to be transmitted needs to be transmitted.
  • the switch 13 may be preset that when the signal to be transmitted needs to be transmitted, and after the switch 13 receives the control signal, the switch 13 is performed between the first antenna 11 and the second antenna 12 at a specified rate.
  • the control signal is used to control the switch 13 to switch between the first connection point A and the second connection point B at a specified rate, so that the switch 13 is implemented at the first antenna 11 and the second antenna 12 at a specified rate. Switch between.
  • the initiator of the control signal received by the switch 13 is not particularly limited.
  • the control signal may be sent to the switch by a controller in the terminal where the antenna system is located; or, for example, the control signal may be sent to the switch by a sensor in the terminal where the antenna system is located; or, for example, the The control signal can be sent to the switch by a sensor in the antenna system.
  • the senor is used to detect the distance between the user and the terminal, because the amount of radiation received by the human body is also affected by the distance between the user and the terminal.
  • the sensor may be located in the antenna system, or the sensor may be located in the terminal where the antenna system is located, which is not specifically limited in this embodiment of the present invention.
  • FIG. 3 is a second schematic diagram of an antenna system according to an embodiment of the present invention.
  • the antenna system includes a first antenna 11, a second antenna 12, a changeover switch and a sensor 14, wherein the sensor 14 is connected to the changeover switch 13.
  • the sensor 14 is used to detect the distance between the user and the terminal.
  • the type of the sensor is not particularly limited in the embodiment of the present invention.
  • the distance between the user and the terminal can be detected by using a Proximity sensor (P-sensor).
  • P-sensor Proximity sensor
  • the switch 13 switches between the first connection point A and the second connection point B at a specified rate after receiving the control signal, so that the first antenna 11 and the second antenna 12 Signals can be transmitted in turn.
  • the control signal is not sent to the changeover switch 13, so that the changeover switch 13 can be switched to one of the antennas, and the transmitting task of the signal to be transmitted is performed by the connected antenna.
  • the antenna system shown in FIG. 3 is only one specific implementation of the antenna system provided by the embodiment of the present invention, and is not intended to limit the application.
  • the specified distance may be preset according to actual needs, which is not specifically limited in the embodiment of the present invention.
  • the antenna system provided by the embodiment of the present invention includes a first antenna, a second antenna, and a switch.
  • the switch includes two connection points. The first connection point is connected to the first antenna, and the second connection point is connected to the second antenna. Switching between the first connection point and the second connection point.
  • the switch can switch between the first antenna and the second antenna, and thus, in a unit time including at least one switching, the first antenna and the first antenna.
  • the two antennas can share the task of transmitting signals together, and each antenna maintains a "transmit signal-stop transmission signal-transmit signal-stop transmission signal" in a unit time during the switching of the switch.
  • the state of the number can distribute the energy equally to the two antennas.
  • the embodiment of the present invention can solve the problem that the transmission performance of the antenna system in the prior art and the reduction of the SAR value cannot be both.
  • the embodiment of the present invention provides a terminal.
  • the terminal includes the antenna system as described in the first embodiment.
  • FIG. 4 is a first schematic diagram of a terminal according to an embodiment of the present invention.
  • the terminal includes an antenna system 41, a sensor 42, and a controller 43 as shown in FIG.
  • the sensor 42 in the terminal is configured to detect the distance between the user and the terminal, and send the distance information to the controller 43 in the terminal, and the controller 43 is configured to detect between the user and the terminal.
  • the controller 43 sends a control signal to the switch 13 in the antenna system 41, and the switch 13 receives the control signal at a specified rate. Switching is performed between the first connection point A and the second connection point B such that the first antenna 11 and the second antenna 12 can transmit signals in turn.
  • FIG. 5 is a second schematic diagram of a terminal according to an embodiment of the present invention.
  • the terminal includes an antenna system 51 and a sensor 52 as shown in FIG.
  • the sensor 52 in the terminal is configured to detect the distance between the user and the terminal. When the distance between the user and the terminal is less than the specified distance, the sensor 52 sends the switch 52 to the switch 13 in the antenna system 51. After the control signal is received, the switch 13 switches between the first connection point A and the second connection point B at a specified rate, so that the first antenna 11 and the second antenna 12 can transmit signals in turn. .
  • FIG. 6 is a third schematic diagram of a terminal according to an embodiment of the present invention.
  • the terminal includes as shown in FIG. Antenna system 61.
  • the sensor 14 in the antenna system 61 is configured to detect the distance between the user and the terminal. When the distance between the user and the terminal is less than the specified distance, the sensor 14 sends a control signal to the switch 13. The switch 13 switches between the first connection point A and the second connection point B at a specified rate after receiving the control signal, so that the first antenna 11 and the second antenna 12 can transmit signals in turn.
  • the terminal provided by the embodiment of the present invention includes the antenna system described above.
  • the switch can switch between the first antenna and the second antenna, and thus, in a unit time including at least one switching, the first antenna and the first antenna
  • the two antennas can share the task of transmitting signals together, and in the process of switching the switching switch, each antenna maintains a state of "transmitting signal - stopping transmitting signal - transmitting signal - stopping transmitting signal" in a unit time, and can The energy is evenly distributed to the two antennas.
  • the embodiment of the present invention can solve the problem that the transmission performance of the antenna system in the prior art cannot reduce the SAR value.
  • the embodiment of the present invention further provides an embodiment of a method for implementing the steps and methods in the foregoing apparatus embodiments.
  • the antenna system provided in the foregoing embodiment 1 and the terminal provided in the foregoing embodiment 2 are further provided.
  • the embodiment of the invention provides a signal processing method, which comprises:
  • the switch switches between the first antenna and the second antenna at a specified rate, so that the switch passes the received signal to be transmitted through the first antenna and the second antenna.
  • the antenna is rotated in turn.
  • the switch when the distance between the user and the terminal is less than the specified distance, the switch switches between the first antenna and the second antenna at a specified rate.
  • the method also included:
  • the sensor detects the distance between the user and the terminal
  • the senor When the distance between the user and the terminal is less than the specified distance, the sensor sends a control signal to the switch to cause the switch to switch between the first antenna and the second antenna at a specified rate according to the received control signal.
  • the method when the distance between the user and the terminal is less than the specified distance, before the switch is switched between the first antenna and the second antenna at the specified rate, the method further includes:
  • the sensor detects the distance between the user and the terminal
  • the sensor transmits the distance to the controller in the terminal
  • the controller When the distance between the user and the terminal is less than the specified distance, the controller sends a control signal to the switch to cause the switch to switch between the first antenna and the second antenna at a specified rate according to the received control signal.
  • the switch when the distance between the user and the terminal is less than the specified distance, the switch switches between the first antenna and the second antenna at a specified rate, so that the switch will receive the received switch.
  • the transmitted signal is transmitted in turn through the first antenna and the second antenna.
  • the switch in the antenna system when the distance between the user and the terminal is less than the specified distance, the switch in the antenna system is The specified rate is switched between the first antenna and the second antenna.
  • the two antennas can share the task of transmitting signals, and in the process of switching the switch, Each antenna maintains the state of “transmitting signal-stop transmitting signal-transmitting signal-stop transmitting signal” per unit time, and can equally distribute energy to two antennas for transmission.
  • the energy pair radiated outward by each antenna The differential value of time will be halved, so that the SAR value of the antenna is reduced to half of the SAR value of the antenna in the prior art.
  • the transmission performance of the antenna remains unchanged.
  • the embodiments of the invention can solve the problem that the transmission performance of the antenna system in the prior art and the reduction of the SAR value cannot be combined.
  • the embodiment of the present invention provides a signal processing system.
  • FIG. 7 is a functional block diagram of a signal processing system according to an embodiment of the present invention. As shown in Figure 7, the system includes:
  • the switching unit 71 is configured to switch between the first antenna and the second antenna at a specified rate when the distance between the user and the terminal is less than the specified distance, so that the switching unit 71 passes the signal to be transmitted through the first antenna and The second antenna is rotated in turn.
  • the system further includes:
  • a detecting unit 72 configured to detect a distance between the user and the terminal
  • the sending unit 73 is configured to: when the distance between the user and the terminal is less than the specified distance, send a control signal to the switching unit 71, so that the switching unit 71 is at the first antenna and the second antenna according to the received control signal at a specified rate. Switch between.
  • the detecting unit 72 is configured to detect a distance between the user and the terminal;
  • the sending unit 73 is further configured to send the distance to the controller in the terminal; and, when the distance between the user and the terminal is less than the specified distance, send a control signal to the switching unit 71, so that the switching unit 71 receives the The control signal switches between the first antenna and the second antenna at a specified rate.
  • the embodiment of the present invention provides a signal processing system, where the switching unit is configured to switch between the first antenna and the second antenna at a specified rate when the distance between the user and the terminal is less than a specified distance, so that the switching unit is to be transmitted.
  • the signal is transmitted in turn through the first antenna and the second antenna.
  • the user may be exposed to a larger antenna, which is harmful to the human body.
  • the switch in the antenna system is The specified rate is switched between the first antenna and the second antenna, such that the ticket includes at least one handover
  • the two antennas can share the task of transmitting signals together, and in the process of switching the switch, each antenna will maintain "transmit signal - stop transmitting signal - transmitting signal - stop transmitting signal" in unit time.
  • the state can distribute the energy equally to the two antennas.
  • the differential value of the energy radiated from each antenna to the time is halved, so that the SAR value of the antenna is reduced to the SAR value of the antenna in the prior art.
  • the emission performance of the antenna remains unchanged. In this way, the embodiment of the present invention can solve the problem that the transmission performance of the antenna system in the prior art and the SAR value cannot be reduced.
  • the disclosed system, apparatus, and method may be implemented in other manners.
  • the device embodiments described above are merely illustrative.
  • the division of the unit is only a logical function division.
  • multiple units or components may be combined. Or it can be integrated into another system, or some features can be ignored or not executed.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.
  • each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the above integrated unit can be implemented in the form of hardware or in the form of hardware plus software functional units.
  • the above integrated unit implemented in the form of a software functional unit can be stored in a Computers can be read from the storage medium.
  • the above software functional unit is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor to perform the methods of the various embodiments of the present invention. Part of the steps.
  • the foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like, which can store program codes. .

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Abstract

本发明实施例提供了一种天线系统及终端、信号处理方法及系统。一方面，本发明实施例提供的天线系统包括：第一天线；第二天线；切换开关，所述切换开关包括两个连接点，第一连接点连接所述第一天线，第二连接点连接所述第二天线，所述切换开关在所述第一连接点和所述第二连接点之间切换。因此，本发明实施例提供的技术方案能够解决现有技术中天线系统的发射性能和降低SAR值不可兼得的问题。

Description

天线系统及终端、信号处理方法及系统 技术领域
本发明涉及通信技术领域，尤其涉及一种天线系统及终端、信号处理方法及系统。
背景技术
随着通信技术的发展，以及天线性能的优化，终端对人体的辐射也在增加。目前，比吸收率(Specific Absorption Rate，SAR)可以作为天线对人体的电磁辐射的衡量指标，其单位为W/kg或者mW/kg。具体的，SAR值指暴露于电磁辐射中，给定密度的体积微元内质量微元所吸收(消散)的能量微元对时间的微分。目前，美国和欧洲已经明确规定了终端所允许的最大的SAR值标准，美国标准为1.6W/kg，欧洲标准为2.0W/kg。
在实现本发明过程中，发明人发现现有技术中至少存在如下问题：
由于SAR值与天线的发射性能相互制约，现有技术中的天线系统，需要牺牲一定的发射性能为代价，才能达到降低SAR值的目的。
发明内容
有鉴于此，本发明实施例提供了一种天线系统及终端、信号处理方法及系统，用以解决现有技术中天线系统的发射性能和降低SAR值不可兼得的问题。
一方面，本发明实施例提供了一种天线系统，所述系统包括：
第一天线；
第二天线；
切换开关，所述切换开关包括两个连接点，第一连接点连接所述第一天线，第二连接点连接所述第二天线，所述切换开关在所述第一连接点和所述第二连接点之间切换。
如上所述的方面和任一可能的实现方式，进一步提供一种实现 方式，所述系统还包括：
传感器，所述传感器连接所述切换开关。
上述技术方案中的一个技术方案具有如下有益效果：
本发明实施例提供的天线系统，包括第一天线；第二天线；切换开关，切换开关包括两个连接点，第一连接点连接第一天线，第二连接点连接第二天线，切换开关在第一连接点和第二连接点之间切换。本发明实施例中，通过在双天线系统中增设切换开关，该切换开关可以在第一天线和第二天线之间实现切换，如此，在包括至少一次切换的单位时间内，第一天线和第二天线可以共同分担发射信号的任务，并且，在切换开关进行切换的过程中，在单位时间内每个天线都会保持“发射信号-停止发射信号-发射信号-停止发射信号”的状态，能够将能量平均分配给两个天线发射出去，此时，每个天线向外辐射的能量对时间的微分值都会减半，使得天线的SAR值降低至现有技术中天线SAR值的一半，在该过程中天线的发射性能保持不变，如此，本发明实施例能够解决现有技术中天线系统的发射性能和降低SAR值不可兼得的问题。
另一方面，本发明实施例提供了一种终端，包括：上述的天线系统。
上述技术方案中的一个技术方案具有如下有益效果：
本发明实施例提供的终端，包括上述的天线系统。本发明实施例中，通过在双天线系统中增设切换开关，该切换开关可以在第一天线和第二天线之间实现切换，如此，在包括至少一次切换的单位时间内，第一天线和第二天线可以共同分担发射信号的任务，并且，在切换开关进行切换的过程中，在单位时间内每个天线都会保持“发射信号-停止发射信号-发射信号-停止发射信号”的状态，能够将能量平均分配给两个天线发射出去，此时，每个天线向外辐射的能量对时间的微分值都会减半，使得天线的SAR值降低至现有技术中天线SAR值的一半，在该过程中天线的发射性能保持不变，如此，本发明实施例能够解决现有技术中天线系统的发射性能和降低SAR值不 可兼得的问题。
再一方面，本发明实施例提供了一种信号处理方法，包括：
当用户与终端之间的距离小于指定距离时，切换开关以指定速率在第一天线和第二天线之间进行切换，以使得所述切换开关将待发射的信号通过所述第一天线与所述第二天线轮流发射。
如上所述的方面和任一可能的实现方式，进一步提供一种实现方式，当用户与终端之间的距离小于指定距离时，切换开关以指定速率在第一天线和第二天线之间进行切换之前，所述方法还包括：
传感器检测所述用户与所述终端之间的距离；
当所述用户与所述终端之间的距离小于指定距离时，所述传感器向所述切换开关发送控制信号，以使得所述切换开关根据接收到的所述控制信号，以指定速率在所述第一天线与所述第二天线之间进行切换。
如上所述的方面和任一可能的实现方式，进一步提供一种实现方式，当用户与终端之间的距离小于指定距离时，切换开关以指定速率在第一天线和第二天线之间进行切换之前，所述方法还包括：
所述传感器检测所述用户与所述终端之间的距离；
所述传感器将所述距离发送给所述终端中的控制器，使得当所述用户与所述终端之间的距离小于指定距离时，所述终端中的控制器向所述切换开关发送控制信号，以使得所述切换开关根据接收到的所述控制信号，以指定速率在所述第一天线与所述第二天线之间进行切换。
上述技术方案中的一个技术方案具有如下有益效果：
本发明实施例提供信号处理方法中，当用户与终端之间的距离小于指定距离时，切换开关以指定速率在第一天线和第二天线之间进行切换，以使得切换开关将待发射的信号通过第一天线与第二天线轮流发射。由于用户距离终端较近时，用户会受到更大的天线辐射，对人体危害较大，因此，本发明实施例中，当用户与终端的距离小于指定距离时，天线系统中的切换开关就以指定速率在第一天 线和第二天线之间进行切换，如此，在包括至少一次切换的单位时间内，两个天线可以共同分担发射信号的任务，并且，在切换开关进行切换的过程中，在单位时间内每个天线都会保持“发射信号-停止发射信号-发射信号-停止发射信号”的状态，能够将能量平均分配给两个天线发射出去，此时，每个天线向外辐射的能量对时间的微分值都会减半，使得天线的SAR值降低至现有技术中天线SAR值的一半，在该过程中天线的发射性能保持不变，如此，本发明实施例能够解决现有技术中天线系统的发射性能和降低SAR值不可兼得的问题。
再一方面，本发明实施例还提供了一种信号处理系统，包括：
切换单元，用于当用户与终端之间的距离小于指定距离时，以指定速率在第一天线和第二天线之间进行切换，以使得所述切换单元将待发射的信号通过所述第一天线与所述第二天线轮流发射。
如上所述的方面和任一可能的实现方式，进一步提供一种实现方式，所述系统还包括：
检测单元，用于检测所述用户与所述终端之间的距离；
发送单元，用于当用户与终端之间的距离小于指定距离时，向所述切换单元发送控制信号，以使得所述切换单元根据接收到的所述控制信号，以指定速率在所述第一天线与所述第二天线之间进行切换。
如上所述的方面和任一可能的实现方式，进一步提供一种实现方式，
所述检测单元，用于检测用户与终端之间的距离；
所述发送单元，还用于将所述距离发送给所述终端中的控制器；以及，用于当所述用户与所述终端之间的距离小于指定距离时，向所述切换单元发送控制信号，以使得所述切换单元根据接收到的所述控制信号，以指定速率在所述第一天线与所述第二天线之间进行切换。
上述技术方案中的一个技术方案具有如下有益效果：
本发明实施例提供信号处理系统中，切换单元用于当用户与终端之间的距离小于指定距离时，以指定速率在第一天线和第二天线之间进行切换，以使得切换单元将待发射的信号通过第一天线与第二天线轮流发射。由于用户距离终端较近时，用户会受到更大的天线辐射，对人体危害较大，因此，本发明实施例中，当用户与终端的距离小于指定距离时，天线系统中的切换开关就以指定速率在第一天线和第二天线之间进行切换，如此，在包括至少一次切换的单位时间内，两个天线可以共同分担发射信号的任务，并且，在切换开关进行切换的过程中，在单位时间内每个天线都会保持“发射信号-停止发射信号-发射信号-停止发射信号”的状态，能够将能量平均分配给两个天线发射出去，此时，每个天线向外辐射的能量对时间的微分值都会减半，使得天线的SAR值降低至现有技术中天线SAR值的一半，在该过程中，天线的发射性能保持不变，如此，本发明实施例能够解决现有技术中天线系统的发射性能和降低SAR值不可兼得的问题。
附图说明
为了更清楚地说明本发明实施例的技术方案，下面将对实施例中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动性的前提下，还可以根据这些附图获得其它的附图。
图1是本发明实施例所提供的天线系统的第一示意图；
图2是天线在发射信号过程中所辐射出的能量示意图；
图3是本发明实施例所提供的天线系统的第二示意图；
图4是本发明实施例所提供的终端的第一示意图；
图5是本发明实施例所提供的终端的第二示意图；
图6是本发明实施例所提供的终端的第三示意图；
图7是本发明实施例所提供的信号处理系统的功能方块图。
具体实施方式
为了更好的理解本发明的技术方案，下面结合附图对本发明实施例进行详细描述。
应当明确，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其它实施例，都属于本发明保护的范围。
在本发明实施例中使用的术语是仅仅出于描述特定实施例的目的，而非旨在限制本发明。在本发明实施例和所附权利要求书中所使用的单数形式的“一种”、“所述”和“该”也旨在包括多数形式，除非上下文清楚地表示其他含义。
应当理解，本文中使用的术语“和/或”仅仅是一种描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。另外，本文中字符“/”，一般表示前后关联对象是一种“或”的关系。
应当理解，尽管在本发明实施例中可能采用术语第一、第二等来描述天线等，但这些天线等不应限于这些术语。这些术语仅用来将天线等彼此区分开。例如，在不脱离本发明实施例范围的情况下，第一天线也可以被称为第二天线，类似地，第二天线也可以被称为第一天线。
取决于语境，如在此所使用的词语“如果”可以被解释成为“在……时”或“当……时”或“响应于确定”或“响应于检测”。类似地，取决于语境，短语“如果确定”或“如果检测(陈述的条件或事件)”可以被解释成为“当确定时”或“响应于确定”或“当检测(陈述的条件或事件)时”或“响应于检测(陈述的条件或事件)”。
实施例一
现有技术中的天线系统，一般以牺牲天线的发射性能为代价降低SAR值，以达到减少人体受到天线发射信号时所辐射出的能量的目的。此时，天线的发射性能受到较大影响。
本发明实施例给出一种天线系统，用以解决现有技术中天线的 发射性能和降低SAR值不可兼得的问题。
具体的，本发明实施例所提供的天线系统可以位于终端中。本发明实施例所涉及的终端可以包括但不限于：无线手持设备、平板电脑(Tablet Computer)、手机。
具体的，请参考图1，其为本发明实施例所提供的天线系统的第一示意图，如图1所示，该天线系统包括：
第一天线11；
第二天线12；
切换开关13，切换开关13包括两个连接点，第一连接点A连接第一天线11，第二连接点B连接第二天线12，切换开关13在第一连接点A和第二连接点B之间切换。
具体的，如图1所示，当切换开关13切换至第一连接点A时，切换开关13与第一天线11连通，当天线系统需要发射信号时，即可以通过连通的第一天线11向外发射信号；同理，当切换开关13切换至第二连接点B时，切换开关13与第二天线12连通，当天线系统需要发射信号时，即可以通过连通的第二天线12向外发射信号。
现有技术中，针对包含有两个天线的双天线系统，当天线系统需要发射信号时，只能通过其中的一个固定的天线发射信号，另一个天线并不承担向外发射信号的任务。相比之下，本发明实施例中，当天线系统需要发射信号时，如图1所示，天线系统的切换开关13就可以在连接点A和连接点B之间进行切换，使得切换开关13可以在第一天线11和第二天线12之间轮流进行切换，从而，使得待发射的信号可以通过第一天线11和第二天线12轮流发射。
具体的，如图1所示，切换开关13以指定速率在第一天线11和第二天线12之间进行切换。在实际的实现过程中，指定速率可以根据实际需要进行预设，例如，指定速率可以设置为300ms/次～1000ms/次，也即，切换开关13每隔300ms～1000ms在第一天线11和第二天线12之间进行一次切换。
如图1所示，本发明实施例中，切换开关13以指定速率在第一天线11和第二天线112之间进行切换时，由于切换速率较快，在单位时间内切换开关13能够在第一天线11和第二天线12之间进行多次切换，在这段时间内，第一天线11和第二天线12都不是持续的在发射信号，每个天线都会保持“发射信号-停止发射信号-发射信号-停止发射信号”的状态，如此，能够将能量平均地分配给两个天线发射出去，而在该单位时间内，每个天线辐射出去的能量对时间的积分值都减半，即SAR值减半。因此，本发明实施例提供的天线系统，在保证天线的发射性能不变的前提下，天线系统在单位时间内辐射出的能量峰值得到较大地降低，从而降低了SAR值。
举例说明，如图1所示，假设一个时间段，该时间段包括N个单位时间，N为大于2的整数，其中，一个单位时间包括第一发射时长t1和第二发射时长t2，第一天线在第一发射时长内发射信号，第二天线在第二发射时长内发射信号，该单位时间内切换开关进行一次切换，假设该单位时间内两个天线中，每个天线在发射信号过程中向外辐射的能量为10W。请参考图2，其为天线在发射信号过程中所辐射出的能量示意图。现有技术中是依靠一个天线承担所有的发射信号的任务，该天线在这个时间段内是持续的在发射信号，此时，请参考图2中的曲线A，曲线A为现有技术中天线在发射信号的过程中所辐射出来的能量示意图，天线在发射信号的过程中所辐射出来的能量为10W、10W、10W、10W……而本发明实施例中是通过第一天线和第二天线轮流发射信号，并不存在两个天线同时发射信号的情况；因此，请参考图2中的曲线B和曲线C，曲线B为本发明实施例中第一天线在发射信号的过程中所辐射出来的能量示意图，曲线C为本发明实施例中第二天线在发射信号的过程中所辐射出来的能量示意图，如图2所示，在该时间段内，第一天线在发射信号的过程中所辐射出来的能量为10W、0、10W、0……第二天线在发射信号的过程中所辐射出来的能量为0、10W、0、10W……基于此，在这个时间段内，以一个单位时间为例，如果一发射时长 t1和第二发射时长t2相等，每个天线辐射出来的能量对时间的微分等于现有技术中天线辐射出来的能量对时间的微分的一半，如此，本发明实施例中的天线在该时间段内的SAR值相当于现有技术中天线的SAR值的一半，也即，在该时间段内，用户受到的SAR包括来自于第一天线的5W，以及，来自于第二天线的5W，即用户受到的SAR为5W，而对于天线系统而言，其辐射出的总发射功率仍然始终是10W，天线系统的发射性能并没有受到影响，天线的发射性能与现有技术中天线的发射性能一致。
需要说明的是，本发明实施例中，如图1所示，切换开关13执行切换操作的时间可以根据实际需要进行预设。
例如，可以预设为：只要有待发射信号需要发射，切换开关13即以指定速率在第一天线11和第二天线12之间进行切换。
或者，又例如，还可以预设为：当有待发射信号需要发射，且在切换开关13接收到控制信号后，切换开关13才会以指定速率在第一天线11和第二天线12之间进行切换。其中，该控制信号用以控制切换开关13以指定速率在第一连接点A和第二连接点B之间进行切换，以实现切换开关13以指定速率在第一天线11和第二天线12之间进行切换。
需要说明的是，本发明实施例对切换开关13接收到的控制信号的发起方不进行特别限定。例如，该控制信号可以由该天线系统所在终端中的控制器发送给切换开关；或者，又例如，该控制信号可以由该天线系统所在终端中的传感器发送给切换开关；或者，又例如，该控制信号可以由天线系统中的传感器发送给切换开关。
具体的，由于人体受到的辐射量还受到用户与终端之间的距离的影响，因此，本发明实施例中，传感器用于检测用户与终端之间的距离。该传感器可以位于天线系统中，或者，该传感器还可以位于天线系统所在的终端中，本发明实施例对此不进行特别限定。
在一个具体的实现过程中，请参考图3，其为本发明实施例所提供的天线系统的第二示意图。
如图3所示，该天线系统包括：第一天线11、第二天线12、切换开关和传感器14，其中，传感器14连接切换开关13。
如图,3所示，传感器14用于检测用户与终端之间的距离。本发明实施例对传感器的类型不进行特别限定，例如，可以利用近物体传感器(Proximity sensor，P-sensor)检测用户与终端之间的距离。
具体的，如图3所示，当用户与终端之间的距离小于指定距离时，由于用户与终端之间的距离较近，天线系统所辐射出的能量对人体的危害较大，传感器14可以向切换开关13发送控制信号，切换开关13在接收到控制信号后，即以指定速率在第一连接点A和第二连接点B之间进行切换，从而使得第一天线11与第二天线12可以轮流发射信号。
或者，如图3所示，在用户与终端之间的距离不小于指定距离时，由于人体与终端之间的距离较远，天线所辐射出的能量对人体的危害较小，此时，传感器14不会向切换开关13发送控制信号，因此，切换开关13可以切换至其中的一个天线，并由连通的天线进行待发射信号的发射任务。
可以理解的是，如图3所示的天线系统仅为本发明实施例所提供的天线系统的一种具体实现方式，并不用以限制本申请。
本发明实施例中，指定距离可以根据实际需要进行预设，本发明实施例对此不进行特别限定。
本发明实施例中的一个技术方案具有以下有益效果：
本发明实施例提供的天线系统，包括第一天线；第二天线；切换开关，切换开关包括两个连接点，第一连接点连接第一天线，第二连接点连接第二天线，切换开关在第一连接点和第二连接点之间切换。本发明实施例中，通过在双天线系统中增设切换开关，该切换开关可以在第一天线和第二天线之间实现切换，如此，在包括至少一次切换的单位时间内，第一天线和第二天线可以共同分担发射信号的任务，并且，在切换开关进行切换的过程中，在单位时间内每个天线都会保持“发射信号-停止发射信号-发射信号-停止发射信 号”的状态，能够将能量平均分配给两个天线发射出去，此时，每个天线向外辐射的能量对时间的微分值都会减半，使得天线的SAR值降低至现有技术中天线SAR值的一半，在该过程中，天线的发射性能保持不变，如此，本发明实施例能够解决现有技术中天线系统的发射性能和降低SAR值不可兼得的问题。
实施例二
基于上述实施例一所提供的天线系统，本发明实施例提供了一种终端。该终端包括如实施例一所述的天线系统。
在一个具体的实现过程中，请参考图4，其为本发明实施例所提供的终端的第一示意图。如图4所示，该终端包括如图1所示的天线系统41、传感器42和控制器43。
具体的，如图4所示，终端中的传感器42用于检测用户与终端之间的距离，并将该距离信息发送给终端中的控制器43，控制器43用于检测用户与终端之间的距离是否小于指定距离，当用户与终端之间的距离小于指定距离时，控制器43向天线系统41中的切换开关13发送控制信号，切换开关13在接收到该控制信号后，以指定速率在第一连接点A和第二连接点B之间进行切换，从而使得第一天线11与第二天线12可以轮流发射信号。
在另一个具体的实现过程中，请参考图5，其为本发明实施例所提供的终端的第二示意图。如图5所示，该终端包括如图1所示的天线系统51和传感器52。
具体的，如图5所示，终端中的传感器52用于检测用户与终端之间的距离，当用户与终端之间的距离小于指定距离时，传感器52向天线系统51中的切换开关13发送控制信号，切换开关13在接收到该控制信号后，即以指定速率在第一连接点A和第二连接点B之间进行切换，从而使得第一天线11与第二天线12可以轮流发射信号。
在再一个具体的实现过程中，请参考图6，其为本发明实施例所提供的终端的第三示意图。如图6所示，该终端包括如图3所示 的天线系统61。
具体的，如图6所示，天线系统61中的传感器14用于检测用户与终端之间的距离，当用户与终端之间的距离小于指定距离时，传感器14向切换开关13发送控制信号，切换开关13在接收到该控制信号后，即以指定速率在第一连接点A和第二连接点B之间进行切换，从而使得第一天线11与第二天线12可以轮流发射信号。
本实施例未详细描述的部分，可参考对实施例一的相关说明。
本发明实施例中的一个技术方案具有以下有益效果：
本发明实施例提供的终端，包括上述的天线系统。本发明实施例中，通过在双天线系统中增设切换开关，该切换开关可以在第一天线和第二天线之间实现切换，如此，在包括至少一次切换的单位时间内，第一天线和第二天线可以共同分担发射信号的任务，并且，在切换开关进行切换的过程中，在单位时间内每个天线都会保持“发射信号-停止发射信号-发射信号-停止发射信号”的状态，能够将能量平均分配给两个天线发射出去，此时，每个天线向外辐射的能量对时间的微分值都会减半，使得天线的SAR值降低至现有技术中天线SAR值的一半，在该过程中，天线的发射性能保持不变，如此，本发明实施例能够解决现有技术中天线系统的发射性能和降低SAR值不可兼得的问题。
实施例三
基于上述实施例一所提供的天线系统和上述实施例二所提供的终端，本发明实施例进一步给出实现上述装置实施例中各步骤及方法的方法实施例。
本发明实施例提供了一种信号处理方法，该方法包括：
当用户与终端之间的距离小于指定距离时，切换开关以指定速率在第一天线和第二天线之间进行切换，以使得切换开关将接收到的待发射的信号通过第一天线与第二天线轮流发射。
在一个具体的实现过程中，当用户与终端之间的距离小于指定距离时，切换开关以指定速率在第一天线和第二天线之间进行切换 之前，方法还包括：
传感器检测用户与终端之间的距离；
当用户与终端之间的距离小于指定距离时，传感器向切换开关发送控制信号，以使得切换开关根据接收到的控制信号以指定速率在第一天线与第二天线之间进行切换。
在另一个具体的实现过程中，当用户与终端之间的距离小于指定距离时，切换开关以指定速率在第一天线和第二天线之间进行切换之前，方法还包括：
传感器检测用户与终端之间的距离；
传感器将距离发送给终端中的控制器；
当用户与终端之间的距离小于指定距离时，控制器向切换开关发送控制信号，以使得切换开关根据接收到的控制信号以指定速率在第一天线与第二天线之间进行切换。
本实施例未详细描述的部分，可参考对实施例一和实施例二的相关说明。
本发明实施例中的一个技术方案具有以下有益效果：
本发明实施例提供信号处理方法中，当用户与终端之间的距离小于指定距离时，切换开关以指定速率在第一天线和第二天线之间进行切换，以使得切换开关将接收到的待发射的信号通过第一天线与第二天线轮流发射。由于用户距离终端较近时，用户会受到更大的天线辐射，对人体危害较大，因此，本发明实施例中，当用户与终端的距离小于指定距离时，天线系统中的切换开关就以指定速率在第一天线和第二天线之间进行切换，如此，在包括至少一次切换的单位时间内，两个天线可以共同分担发射信号的任务，并且，在切换开关进行切换的过程中，在单位时间内每个天线都会保持“发射信号-停止发射信号-发射信号-停止发射信号”的状态，能够将能量平均分配给两个天线发射出去，此时，每个天线向外辐射的能量对时间的微分值都会减半，使得天线的SAR值降低至现有技术中天线SAR值的一半，在该过程中，天线的发射性能保持不变，如此，本 发明实施例能够解决现有技术中天线系统的发射性能和降低SAR值不可兼得的问题。
实施例四
基于上述实施例三提供的信号处理方法，本发明实施例提供了一种信号处理系统。
具体的，请参考图7，其为本发明实施例所提供的信号处理系统的功能方块图。如图7所示，该系统包括：
切换单元71，用于当用户与终端之间的距离小于指定距离时，以指定速率在第一天线和第二天线之间进行切换，以使得切换单元71将待发射的信号通过第一天线与第二天线轮流发射。
具体的，本发明实施例中，该系统还包括：
检测单元72，用于检测用户与终端之间的距离；
发送单元73，用于当用户与终端之间的距离小于指定距离时，向切换单元71发送控制信号，以使得切换单元71根据接收到的控制信号，以指定速率在第一天线与第二天线之间进行切换。
在一个具体的实现过程中，检测单元72，用于检测用户与终端之间的距离；
发送单元73，还用于将距离发送给终端中的控制器；以及，用于当用户与终端之间的距离小于指定距离时，向切换单元71发送控制信号，以使得切换单元71根据接收到的控制信号，以指定速率在第一天线与第二天线之间进行切换。
上述技术方案中的一个技术方案具有如下有益效果：
本发明实施例提供信号处理系统中，切换单元用于当用户与终端之间的距离小于指定距离时，以指定速率在第一天线和第二天线之间进行切换，以使得切换单元将待发射的信号通过第一天线与第二天线轮流发射。由于用户距离终端较近时，用户会受到更大的天线辐射，对人体危害较大，因此，本发明实施例中，当用户与终端的距离小于指定距离时，天线系统中的切换开关就以指定速率在第一天线和第二天线之间进行切换，如此，在包括至少一次切换的单 位时间内，两个天线可以共同分担发射信号的任务，并且，在切换开关进行切换的过程中，在单位时间内每个天线都会保持“发射信号-停止发射信号-发射信号-停止发射信号”的状态，能够将能量平均分配给两个天线发射出去，此时，每个天线向外辐射的能量对时间的微分值都会减半，使得天线的SAR值降低至现有技术中天线SAR值的一半，在该过程中，天线的发射性能保持不变，如此，本发明实施例能够解决现有技术中天线系统的发射性能和降低SAR值不可兼得的问题。
所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，上述描述的系统，装置和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。
在本发明所提供的几个实施例中，应该理解到，所揭露的系统，装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，所述单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如，多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外，在本发明各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。上述集成的单元既可以采用硬件的形式实现，也可以采用硬件加软件功能单元的形式实现。
上述以软件功能单元的形式实现的集成的单元，可以存储在一 个计算机可读取存储介质中。上述软件功能单元存储在一个存储介质中，包括若干指令用以使得一台计算机装置(可以是个人计算机，服务器，或者网络装置等)或处理器(Processor)执行本发明各个实施例所述方法的部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器(Read-Only Memory，ROM)、随机存取存储器(Random Access Memory，RAM)、磁碟或者光盘等各种可以存储程序代码的介质。
以上所述仅为本发明的较佳实施例而已，并不用以限制本发明，凡在本发明的精神和原则之内，所做的任何修改、等同替换、改进等，均应包含在本发明保护的范围之内。

Claims (9)

  1. 一种天线系统，其特征在于，所述系统包括：
    第一天线；
    第二天线；
    切换开关，所述切换开关包括两个连接点，第一连接点连接所述第一天线，第二连接点连接所述第二天线，所述切换开关在所述第一连接点和所述第二连接点之间切换。
  2. 根据权利要求1所述的系统，其特征在于，所述系统还包括：
    传感器，所述传感器连接所述切换开关。
  3. 一种终端，其特征在于，所述终端包括如权利要求1或2所述的天线系统。
  4. 一种信号处理方法，其特征在于，所述方法包括：
    当用户与终端之间的距离小于指定距离时，切换开关以指定速率在第一天线和第二天线之间进行切换，以使得所述切换开关将待发射的信号通过所述第一天线与所述第二天线轮流发射。
  5. 根据权利要求4所述的方法，其特征在于，当用户与终端之间的距离小于指定距离时，切换开关以指定速率在第一天线和第二天线之间进行切换之前，所述方法还包括：
    传感器检测所述用户与所述终端之间的距离；
    当所述用户与所述终端之间的距离小于指定距离时，所述传感器向所述切换开关发送控制信号，以使得所述切换开关根据接收到的所述控制信号，以指定速率在所述第一天线与所述第二天线之间进行切换。
  6. 根据权利要求5所述的方法，其特征在于，当用户与终端之间的距离小于指定距离时，切换开关以指定速率在第一天线和第二天线之间进行切换之前，所述方法还包括：
    所述传感器检测所述用户与所述终端之间的距离；
    所述传感器将所述距离发送给所述终端中的控制器，使得当所述用户与所述终端之间的距离小于指定距离时，所述终端中的控制器向 所述切换开关发送控制信号，以使得所述切换开关根据接收到的所述控制信号，以指定速率在所述第一天线与所述第二天线之间进行切换。
  7. 一种信号处理系统，其特征在于，所述系统包括：
    切换单元，用于当用户与终端之间的距离小于指定距离时，以指定速率在第一天线和第二天线之间进行切换，以使得所述切换开关将待发射的信号通过所述第一天线与所述第二天线轮流发射。
  8. 根据权利要求7所述的系统，其特征在于，所述系统还包括：
    检测单元，用于检测所述用户与所述终端之间的距离；
    发送单元，用于当用户与终端之间的距离小于指定距离时，向所述切换单元发送控制信号，以使得所述切换单元根据接收到的所述控制信号，以指定速率在所述第一天线与所述第二天线之间进行切换。
  9. 根据权利要求8所述的系统，其特征在于，
    所述检测单元，用于检测用户与终端之间的距离；
    所述发送单元，还用于将所述距离发送给所述终端中的控制器；以及，还用于当所述用户与所述终端之间的距离小于指定距离时，向所述切换单元发送控制信号，以使得所述切换单元根据接收到的所述控制信号，以指定速率在所述第一天线与所述第二天线之间进行切换。
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