CN101677149B - Method for improving insulation of antennas, system and device - Google Patents
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Abstract
本发明实施例公开了一种提高天线隔离度的方法、系统及装置,该系统包括:天线,用于获取从空间中耦合到的其它天线能量的幅度和相位;耦合器,用于根据所述天线从空间中耦合到的所述其它天线的能量的幅度和相位,从所述其它天线的发射链路上耦合能量,并将从所述其它天线的发射链路耦合的能量传输给所述天线,其中,所述耦合器从所述其它天线的发射链路上耦合能量与所述天线获取的从空间中耦合到的所述其它天线的能量幅度相等,相位相反。本发明实施例中,通过使用耦合器,提高了在有限的空间内天线间的隔离度。
The embodiment of the present invention discloses a method, system, and device for improving antenna isolation. The system includes: an antenna, used to obtain the amplitude and phase of energy coupled to other antennas from space; a coupler, used to the amplitude and phase of the energy coupled to the other antenna by the antenna from space, couple energy from the transmit link of the other antenna, and transfer the energy coupled from the transmit link of the other antenna to the antenna , wherein the energy coupled by the coupler from the transmission link of the other antenna is equal in amplitude and opposite in phase to the energy obtained by the antenna coupled to the other antenna from space. In the embodiment of the present invention, the isolation between antennas in a limited space is improved by using a coupler.
Description
技术领域 technical field
本发明涉及通信技术领域,特别是涉及一种提高天线隔离度的方法、系统及装置。The invention relates to the field of communication technology, in particular to a method, system and device for improving antenna isolation.
背景技术 Background technique
在无线通信系统中,使用垂直极化波的传输方式是最佳的,垂直极化波为极化面与大地法线面平行的极化波,适合在地表传输,利于无线通信基站的覆盖和通信。移动通信的传输路径中,各种物体之间会有直射波、反射波和散射波的相互影响,这也就是多径衰落,在无线通信基站中会采用分集技术来解决多路径衰落的影响,该分集技术是通过查找和利用无线传播环境中独立的多径信号来实现的,常用的几种分集接收技术包括:空间分集、极化分集、频率分集、时间分集。空间分集是采用多个接收天线来接收信号,然后将接收信号进行合并,为了保证接收信号的之间的不相关性,要求天线之间的距离足够大,以满足系统的隔离要求。极化分集是采用正交极化的方法,在移动环境下,空间的水平路径和垂直路径是不相关的,信号也呈现不相关的衰落特性。这时可以在发射端和接收端各装两付天线,一个水平极化天线,一个垂直极化天线,继而得到两个不相关的信号。同样的,极化分集也要求两个极化间满足系统的隔离要求。In the wireless communication system, the transmission method using vertically polarized waves is the best. The vertically polarized waves are polarized waves whose polarization plane is parallel to the normal plane of the earth. It is suitable for transmission on the ground surface and is conducive to the coverage and communication. In the transmission path of mobile communication, various objects will interact with direct waves, reflected waves and scattered waves, which is multipath fading. Diversity technology will be used in wireless communication base stations to solve the effects of multipath fading. This diversity technology is realized by finding and utilizing independent multipath signals in the wireless propagation environment. Several commonly used diversity receiving technologies include: space diversity, polarization diversity, frequency diversity, and time diversity. Space diversity is to use multiple receiving antennas to receive signals, and then combine the received signals. In order to ensure the uncorrelation between the received signals, the distance between the antennas is required to be large enough to meet the isolation requirements of the system. Polarization diversity is a method of using orthogonal polarization. In a mobile environment, the horizontal path and the vertical path of the space are uncorrelated, and the signal also exhibits uncorrelated fading characteristics. At this time, two antennas can be installed at the transmitting end and the receiving end respectively, one horizontally polarized antenna and one vertically polarized antenna, and then two uncorrelated signals can be obtained. Similarly, polarization diversity also requires that the isolation requirements of the system be met between two polarizations.
现有技术中,采用同极化的天线,如在空间分集的通信系统中,采用成对的垂直极化天线,该垂直极化的天线被要求安装间隔一定的距离,才能满足通信系统对隔离度的要求。In the prior art, co-polarized antennas are used. For example, in a space diversity communication system, a pair of vertically polarized antennas is used. The vertically polarized antennas are required to be installed at a certain distance to meet the isolation requirements of the communication system. degree requirements.
在实现本发明的过程中,发明人发现现有技术至少存在以下问题:In the process of realizing the present invention, the inventor finds that there are at least the following problems in the prior art:
同极化放置隔离度低,天线在安装时要间隔一定的距离才能满足系统对隔离度的要求,距离越近隔离度越差。The isolation of co-polarization is low, and the antennas must be installed at a certain distance to meet the isolation requirements of the system. The closer the distance, the worse the isolation.
发明内容 Contents of the invention
本发明实施例提供一种提高天线隔离度的方法、系统及装置,以提高天线间的隔离度。Embodiments of the present invention provide a method, system and device for improving antenna isolation, so as to improve the isolation between antennas.
本发明实施例一方面提出一种提高天线隔离度的系统,包括:On the one hand, an embodiment of the present invention proposes a system for improving antenna isolation, including:
天线,用于获取从空间中耦合到的其它天线能量的幅度和相位;Antennas used to obtain the magnitude and phase of energy coupled to other antennas from space;
耦合器,用于根据所述天线从空间中耦合到的所述其它天线的能量的幅度和相位,从所述其它天线的发射链路上耦合能量,并将从所述其它天线的发射链路耦合的能量传输给所述天线,其中,所述耦合器从所述其它天线的发射链路上耦合能量与所述天线获取的从空间中耦合到的所述其它天线的能量幅度相等,相位相反。a coupler for coupling energy from the transmit link of the other antenna according to the magnitude and phase of the energy of the other antenna coupled to the antenna from space, and coupling energy from the transmit link of the other antenna The coupled energy is transmitted to the antenna, wherein the coupling energy of the coupler from the transmission link of the other antenna is equal to the energy obtained by the antenna from the space coupled to the other antenna, and the phase is opposite .
本发明实施例还提出了一种无源耦合器,包括:第一耦合器和第二耦合器,其中:The embodiment of the present invention also proposes a passive coupler, including: a first coupler and a second coupler, wherein:
所述第一耦合器的耦合段与其它天线耦合,所述第一耦合器的相位段与天线的接收链路连接;所述第二耦合器的耦合段与所述天线耦合,所述第二耦合器的相位段与所述其它天线的接收链路连接。The coupling section of the first coupler is coupled to other antennas, the phase section of the first coupler is connected to the receiving link of the antenna; the coupling section of the second coupler is coupled to the antenna, and the second The phase section of the coupler is connected to the receive chain of said other antenna.
本发明实施例还提出了一种有源耦合器,包括:第一耦合器和第二耦合器,其中:The embodiment of the present invention also proposes an active coupler, including: a first coupler and a second coupler, wherein:
所述第一耦合器包括第一信号幅相调节模块、第一信号检测耦合段、第一耦合段、控制模块和检测模块,所述第一信号幅相调节模块一端与所述天线的接收链路连接,所述第一信号幅相调节模块的另一端与所述第一耦合段连接,所述第一信号幅相调节模块与所述控制模块连接,所述第一耦合段与所述其它天线耦合,所述第一信号检测耦合段与所述天线耦合并与所述检测模块连接,所述检测模块与所述控制模块连接;The first coupler includes a first signal amplitude and phase adjustment module, a first signal detection coupling section, a first coupling section, a control module and a detection module, one end of the first signal amplitude and phase adjustment module is connected to the receiving chain of the antenna The other end of the first signal amplitude and phase adjustment module is connected to the first coupling section, the first signal amplitude and phase adjustment module is connected to the control module, and the first coupling section is connected to the other Antenna coupling, the first signal detection coupling section is coupled to the antenna and connected to the detection module, and the detection module is connected to the control module;
所述第二耦合器包括第二信号幅相调节模块、第二信号检测耦合段、第二耦合段、所述控制模块和所述检测模块,所述第二信号幅相调节模块一端与所述其它天线的接收链路连接,所述第二信号幅相调节模块的另一端与所述第二耦合段连接,所述第二信号幅相调节模块与所述控制模块连接,所述第二耦合模块与所述天线耦合,所述第二信号检测耦合段与所述其它天线耦合并与所述检测模块连接,所述检测模块与所述控制模块连接。The second coupler includes a second signal amplitude and phase adjustment module, a second signal detection coupling section, a second coupling section, the control module and the detection module, one end of the second signal amplitude and phase adjustment module is connected to the The receiving link of other antennas is connected, the other end of the second signal amplitude and phase adjustment module is connected to the second coupling section, the second signal amplitude and phase adjustment module is connected to the control module, and the second coupling The module is coupled to the antenna, the second signal detection coupling section is coupled to the other antenna and connected to the detection module, and the detection module is connected to the control module.
本发明实施例还提出了一种提高天线隔离度的方法,包括:The embodiment of the present invention also proposes a method for improving antenna isolation, including:
天线获取从空间中耦合到的其它天线上能量的幅度和相位;The antenna acquires the amplitude and phase of energy coupled to other antennas from space;
耦合器根据所述天线从空间中耦合到的所述其它天线上的能量的幅度和相位,在所述其它天线的发射链路上耦合能量,以使所述天线从空间中耦合到的所述其它天线上的能量与所述耦合器从所述其它天线的发射链路上耦合到的能量幅度相等,相位反相。The coupler couples energy on the transmission link of the other antenna according to the amplitude and phase of the energy on the other antenna coupled to the antenna from space, so that the antenna is coupled to the other antenna from space The energy on the other antennas is equal in magnitude to the energy coupled by the coupler from the transmission links of the other antennas, and the phases are opposite.
由上技术方案可以得知,通过使用耦合器从其它天线的发射链路上耦合能量,该耦合器耦合的能量与天线从空间中耦合到其它天线的能量的幅度相等,相位相反,该耦合器耦合的能量传输给天线,从而与天线从空间中耦合到其它天线的能量对消,提高了天线的隔离度。From the above technical solution, it can be known that by using a coupler to couple energy from the transmission link of other antennas, the energy coupled by the coupler is equal to the energy coupled from the antenna to other antennas in space, and the phase is opposite. The coupler The coupled energy is transmitted to the antenna, thereby canceling the energy coupled from the antenna to other antennas in space, thereby improving the isolation of the antenna.
附图说明 Description of drawings
为了更清楚地说明本发明实施例或现有技术中的技术方案,下面将对实施例或现有技术描述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他的附图。In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. For those skilled in the art, other drawings can also be obtained according to these drawings without any creative effort.
图1为本发明实施例一的一种提高天线隔离度的系统结构图;FIG. 1 is a structural diagram of a system for improving antenna isolation in Embodiment 1 of the present invention;
图2为本发明实施例二的一种无源耦合器的示意图;FIG. 2 is a schematic diagram of a passive coupler according to Embodiment 2 of the present invention;
图3为本发明实施例三的一种提高天线隔离度的系统结构图;FIG. 3 is a structural diagram of a system for improving antenna isolation in
图4为本发明实施例四的一种有源耦合器的示意图;FIG. 4 is a schematic diagram of an active coupler according to Embodiment 4 of the present invention;
图5为本发明实施例五的一种提高天线隔离度的方法流程图。FIG. 5 is a flowchart of a method for improving antenna isolation according to Embodiment 5 of the present invention.
具体实施方式 Detailed ways
下面将结合本发明实施例中的附图,对本发明实施例中的技术方案进行清楚、完整地描述,显然,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他实施例,都属于本发明保护的范围。The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
本发明实施例一种提高天线隔离度的系统,包括:An embodiment of the present invention is a system for improving antenna isolation, including:
天线,用于获取从空间中耦合到的其它天线能量的幅度和相位;Antennas used to obtain the magnitude and phase of energy coupled to other antennas from space;
耦合器,用于根据该天线从空间中耦合到的该其它天线的能量的幅度和相位,从该其它天线的发射链路上耦合能量,并将从该其它天线的发射链路耦合的能量传输给该天线,其中,所述耦合器从该其它天线的发射链路上耦合能量与该天线获取的从空间中耦合到的该其它天线的能量幅度相等,相位相反。a coupler for coupling energy from the transmission link of the other antenna according to the magnitude and phase of the energy of the other antenna coupled to the antenna from space, and transmitting the energy coupled from the transmission link of the other antenna For the antenna, wherein the energy coupled by the coupler from the transmission link of the other antenna is equal in amplitude and opposite in phase to the energy obtained by the antenna coupled to the other antenna from space.
由上可以看出,本发明实施例一种提高天线隔离度的系统,使用耦合器从其它天线的发射链路上耦合能量,该耦合器耦合的能量与天线从空间中耦合到其它天线的能量的幅度相等,相位相反,该耦合器耦合的能量传输给天线,从而与天线从空间中耦合到其它天线的能量对消,提高了天线的隔离度。It can be seen from the above that the embodiment of the present invention is a system for improving antenna isolation. A coupler is used to couple energy from the transmission link of other antennas. The energy coupled by the coupler is the same as the energy coupled from the antenna to other antennas from space. The amplitudes of the couplers are equal and the phases are opposite. The energy coupled by the coupler is transmitted to the antenna, thereby canceling the energy coupled from the antenna to other antennas from the space, and improving the isolation of the antenna.
下面对本发明实施例一种提高天线隔离度的系统进行详细阐述,如图1所示,一种提高天线隔离度的系统,包括:天线1、天线2和无源耦合器3,无源耦合器3包括第一耦合器30和第二耦合器31。A system for improving antenna isolation in an embodiment of the present invention is described in detail below. As shown in FIG. 1 , a system for improving antenna isolation includes: antenna 1, antenna 2, and
天线1,获取从空间中耦合到的天线2的能量的幅度和相位;Antenna 1, to obtain the amplitude and phase of the energy coupled to antenna 2 from space;
第一耦合器30,根据天线1从空间中耦合到的天线2上的能量的幅度和相位,从天线2的发射链路上耦合能量,将从天线2的发射链路上耦合到的能量传输给天线1,其中,该第一耦合器30从天线2的发射链路上耦合的能量与天线1从空间中耦合到天线2上的能量的幅度相等,相位相反。The
其中,该天线2可以作为其它天线。Wherein, the antenna 2 can be used as another antenna.
其中,该第一耦合器30包括第一耦合段301和第一相位段302,该第一耦合段301和第一相位段302连接,该第一耦合段301与天线2的发射链路耦合,该第一相位段302与天线1的接收链路连接。Wherein, the
由上可以看出,本发明实施例的一种提高天线隔离度的系统中,第一耦合器30从天线2的发射链路上耦合能量,该第一耦合器30耦合的能量与天线1从空间中耦合到天线2的能量的幅度相等,相位相反,该第一耦合器30耦合的能量传输给天线1,从而与天线1从空间中耦合到天线2的能量对消,提高了天线1的隔离度。It can be seen from the above that in a system for improving antenna isolation in the embodiment of the present invention, the
可以理解的是,对于该第一耦合器30从天线2的发射链路上耦合的能量与天线1从空间中耦合到天线2上的能量的幅度相等,相位相反可以存在一定的误差,只要使第一耦合器30从天线2的发射链路上耦合的能量与天线1从空间中耦合到天线2的能量基本对消,即可提高天线的隔离度。即第一耦合段301从天线2的发射链路上耦合到的能量的幅度误差允许范围是天线1从空间中耦合到天线2能量的幅度的±20%,第一相位段302从天线2的发射链路上耦合到的能量的相位误差允许范围是天线1从空间耦合到天线2能量的相位的±10度。It can be understood that, for the energy coupled by the
需要说明的是,对于第一耦合器30的第一耦合段301和第一相位段302,第一耦合段301与第一相位段302连接,第一耦合段301与第一相位段302的结构并不作限制,只要第一耦合器30的第一耦合段301从天线2的发射链路上耦合能量,然后通过第一相位段302传输给天线1,使该第一耦合器30耦合的能量与天线1从空间中耦合到的天线2的能量对消即可。It should be noted that, for the
同理,在上述实施例的一种提高天线隔离度的系统中,还包括:Similarly, in a system for improving antenna isolation in the above embodiment, it also includes:
天线2,获取从空间中耦合到的天线1的能量的幅度和相位;Antenna 2, to obtain the amplitude and phase of the energy coupled to antenna 1 from space;
第二耦合器31,根据天线2从空间中耦合到的天线1上的能量的幅度和相位,从天线1的发射链路上耦合能量,将从天线1的发射链路上耦合到的能量传输给天线2,其中,该第二耦合器31从天线1的发射链路上耦合的能量与天线2从空间中耦合到天线1上的能量的幅度相等,相位相反。The
其中,该天线1可以作为其它天线。Wherein, the antenna 1 can be used as another antenna.
其中,该第二耦合器31包括第二耦合段311和第二相位段312,该第二耦合段311和第二相位段312连接,该第二耦合段311与天线1的发射链路耦合,该第二相位段312与天线2的接收链路连接。Wherein, the
由上可以看出,本发明实施例的一种提高天线隔离度的系统中,第二耦合器31从天线1的发射链路上耦合能量,该第二耦合器31耦合的能量与天线2从空间中耦合到天线1的能量的幅度相等,相位相反,该第二耦合器31耦合的能量发送给天线2,从而与天线2从空间中耦合到天线1的能量对消,提高了天线2的隔离度。It can be seen from the above that in a system for improving antenna isolation in the embodiment of the present invention, the
其中,可以理解的是,该第二耦合器31从天线1的发射链路上耦合的能量与天线2从空间中耦合到天线1上的能量的幅度相等,相位相反,可以存在一定的误差,只要使第二耦合器31从天线1的发射链路上耦合的能量与天线2从空间中耦合到天线1的能量基本对消,即可提高天线的隔离度。即第二耦合段311从天线1的发射链路上耦合到的能量的幅度误差允许范围是天线2从空间中耦合到天线1能量的幅度的±20%,第二相位段312从天线1的发射链路上耦合到的能量的相位误差允许范围是天线2从空间耦合到天线1能量的相位的±10度。Wherein, it can be understood that the amplitude of the energy coupled by the
同理,需要说明的是,对于第二耦合器31的第二耦合段311和第二相位段312,第二耦合段311与第二相位段312连接,第二耦合段311与第二相位段312的结构并不作限制,只要第二耦合器31的第二耦合段311从天线1的发射链路上耦合能量,然后通过第二相位段312传输给天线2,使该第二耦合器31从天线1的发射链路上耦合到的能量与天线2从空间中耦合到的天线1的能量相对消即可。Similarly, it should be noted that for the
其中,对于无源耦合器3,在天线1和天线2之间添加该无源耦合器3之前,需要事先获取天线1上从空间中耦合到的天线2的能量的幅度和相位,根据天线1上从空间中耦合到的天线2的能量的幅度和相位选择适当的第一耦合器30,以使第一耦合器30可以从天线2的发射链路上耦合的能量与天线1从空间中耦合到天线2上的能量的幅度相等,相位相反;同理,需要事先获取天线2上从空间中耦合到的天线1的能量的幅度和相位,根据天线2上从空间中耦合到的天线1的能量的幅度和相位选择适当的第二耦合器31,以使第二耦合器31可以从天线1的发射链路上耦合的能量与天线2从空间中耦合到天线1上的能量的幅度相等,相位相反。Among them, for the
可以理解的是,对于上述一种提高天线隔离度的系统实施例中,天线1和天线2可以同时具有接收信号和发射信号的功能,此时,天线1和天线2需要采用无源耦合器3;也可以是天线1具有接收信号的功能,天线2具有发射信号的功能,此时,天线1和天线2可以采用第一耦合器30;也可以是天线1具有发射信号的功能,天线2具有接收信号的功能,此时天线1和天线2可以采用第二耦合器31。It can be understood that, in the above-mentioned system embodiment for improving antenna isolation, antenna 1 and antenna 2 can have the functions of receiving signals and transmitting signals at the same time, and at this time, antenna 1 and antenna 2 need to use
本发明实施例二提供一种无源耦合器3,如图2所示,包括:Embodiment 2 of the present invention provides a
第一耦合器30,根据天线1从空间中耦合到的天线2上的能量的幅度和相位,从天线2的发射链路上耦合能量,将从天线2的发射链路上耦合到的能量传输给天线1,其中,该第一耦合器30从天线2的发射链路上耦合的能量与天线1从空间中耦合到天线2上的能量的幅度相等,相位相反。The
其中,该第一耦合器30包括第一耦合段301和第一相位段302,该第一耦合段301和第一相位段302连接,该第一耦合段301与天线2的发射链路耦合,该第一相位段302与天线1的接收链路连接。Wherein, the
该第一耦合段301用于从天线2的发射链路上耦合能量,第一相位段302将第一耦合段301从天线2的发射链路上耦合的能量传输给天线1。The
第二耦合器31,根据天线2从空间中耦合到的天线1上的能量的幅度和相位,从天线1的发射链路上耦合能量,将从天线1的发射链路上耦合到的能量传输给天线2,其中,该第二耦合器31从天线1的发射链路上耦合的能量与天线2从空间中耦合到天线1上的能量的幅度相等,相位相反。The
其中,该第二耦合器31包括第二耦合段311和第二相位段312,该第二耦合段311和第二相位段312连接,该第二耦合段311与天线1的发射链路耦合,该第二相位段312与天线2的接收链路连接。Wherein, the
该第二耦合段311用于从天线1的发射链路上耦合能量,第二相位段312将第二耦合段311从天线1的发射链路上耦合的能量传输给天线2。The
本发明实施例三提供一种提高天线隔离度的系统,如图3所示,包括:天线4、天线5和有源耦合器6,该有源耦合器6包括第一耦合器和第二耦合器。
天线4,用于获取从空间中耦合到的天线5上的能量的幅度和相位;The antenna 4 is used to obtain the amplitude and phase of the energy coupled to the antenna 5 from space;
第一耦合器,用于根据天线4从空间中耦合到的天线5上的能量的幅度和相位,从天线5的发射链路上耦合能量,将从天线5的发射链路上耦合到的能量传输给天线4,其中,该第一耦合器从天线5的发射链路上耦合的能量与天线4从空间中耦合到天线5上的能量的幅度相等,相位相反。The first coupler is used for coupling energy from the transmission link of the antenna 5 according to the amplitude and phase of the energy coupled to the antenna 5 from the antenna 4 from space, and the energy coupled to the transmission link from the antenna 5 It is transmitted to the antenna 4, wherein the energy coupled by the first coupler from the transmission link of the antenna 5 is equal to the energy coupled from the space of the antenna 4 to the antenna 5, and the phase is opposite.
其中,该天线5可以作为其它天线。Wherein, the antenna 5 can be used as another antenna.
其中,该第一耦合器包括第一信号幅相调节模块601、第一信号检测耦合段602、第一耦合段603、控制模块604和检测模块605,该第一信号幅相调节模块601一端与天线4的接收链路连接,该第一信号幅相调节模块601另一端与第一耦合段603连接,该第一信号幅相调节模块601还与该控制模块604连接,该第一耦合段603与天线5耦合,该第一信号检测耦合段602与天线4耦合并与检测模块605连接,该检测模块605与该控制模块604连接。Wherein, the first coupler includes a first signal amplitude and
该一种提高天线隔离度的系统工作时,天线4获取从空间中耦合到的天线5上的能量的幅度和相位,第一耦合段603从天线5的发射链路上耦合能量,通过第一信号幅相调节模块601调节第一耦合段603从天线5的发射链路上耦合能量的幅度和相位,传输给天线4。When the system for improving antenna isolation works, the antenna 4 obtains the amplitude and phase of the energy coupled to the antenna 5 from space, and the
该第一信号检测耦合段602耦合天线4上的能量,该检测模块605对所述第一信号检测耦合段602耦合的能量进行检测,检测天线4从空间中耦合到天线5的能量与第一耦合器耦合的能量在天线4的接收链路上是否相互对消,控制模块604根据检测模块605的检测结果控制第一信号幅相调节模块601调节第一耦合段603从天线5的发射链路上耦合能量的幅度和相位。The first signal
由上可以看出,本发明实施例的一种提高天线隔离度的系统中,第一耦合器从天线5的发射链路上耦合能量,该第一耦合器耦合的能量与天线4从空间中耦合到天线5的能量的幅度相等,相位相反,该第一耦合器耦合的能量传输给天线4,从而与天线4从空间中耦合到天线5的能量对消,提高了天线4的隔离度。It can be seen from the above that in a system for improving antenna isolation in the embodiment of the present invention, the first coupler couples energy from the transmission link of the antenna 5, and the energy coupled by the first coupler is coupled with the antenna 4 from the space. The amplitude of the energy coupled to the antenna 5 is equal and the phase is opposite. The energy coupled by the first coupler is transmitted to the antenna 4, thereby canceling the energy coupled from the antenna 4 to the antenna 5 from space, and improving the isolation of the antenna 4 .
可以理解的是,对于该第一耦合器从天线5的发射链路上耦合的能量与天线4从空间中耦合到天线5上的能量的幅度相等,相位相反可以存在一定的误差,只要使第一耦合器从天线5的发射链路上耦合的能量与天线4从空间中耦合到天线5的能量基本对消,即可提高天线的隔离度。即通过第一信号幅相调节模块601对耦合到的能量进行调节后,第一耦合器从天线5的发射链路上耦合到的能量的幅度误差允许范围是天线4从空间中耦合到天线5能量的幅度的±20%,从天线5的发射链路上耦合到的能量的相位误差允许范围是天线4从空间耦合到天线5能量的相位的±10度。It can be understood that, for the energy coupled by the first coupler from the transmission link of the antenna 5 and the energy coupled by the antenna 4 from the space to the antenna 5, the amplitude is equal, and there may be a certain error in the opposite phase, as long as the first The energy coupled by a coupler from the transmission link of the antenna 5 and the energy coupled from the antenna 4 to the antenna 5 from the space are basically canceled, so that the isolation of the antenna can be improved. That is, after the coupled energy is adjusted by the first signal amplitude and
同理,在上述实施例的一种提高天线隔离度的系统中,还包括:Similarly, in a system for improving antenna isolation in the above embodiment, it also includes:
天线5,用于获取从空间中耦合到的天线4上的能量的幅度和相位。The antenna 5 is used to obtain the amplitude and phase of the energy coupled to the antenna 4 from space.
第二耦合器,用于根据天线5从空间中耦合到的天线4上的能量的幅度和相位,从天线4的发射链路上耦合能量,将从天线4的发射链路上耦合到的能量传输给天线5,其中,该第二耦合器从天线4的发射链路上耦合的能量与天线5从空间中耦合到天线4上的能量的幅度相等,相位相反。The second coupler is used to couple energy from the transmission link of the antenna 4 according to the amplitude and phase of the energy coupled to the antenna 4 by the antenna 5 from space, and couple the energy coupled to the transmission link from the antenna 4 transmitted to the antenna 5, wherein the energy coupled by the second coupler from the transmission link of the antenna 4 is equal to the energy coupled from the space to the antenna 4 by the antenna 5, and the phase is opposite.
其中,天线4可以作为其它天线。Wherein, the antenna 4 can be used as another antenna.
其中,该第二耦合器包括第二信号幅相调节模块611、第二信号检测耦合段612、第二耦合段613、控制模块604和检测模块605,该第二信号幅相调节模块611一端与天线5的接收链路连接,第二信号幅相调节模块611另一端与第二耦合段613连接,第二信号幅相调节模块611还与控制模块604连接,第二耦合模块613与天线4耦合,所述第二信号检测耦合段612与天线5耦合并与检测模块605连接,该检测模块605与该控制模块604连接。Wherein, the second coupler includes a second signal amplitude and
该一种提高天线隔离度的系统工作时,天线5获取从空间中耦合到的天线4上的能量的幅度和相位,第二耦合段613从天线4的发射链路上耦合能量,通过第二信号幅相调节模块611调节第二耦合段613从天线4的发射链路上耦合能量的幅度和相位,传输给天线5。When the system for improving antenna isolation works, the antenna 5 obtains the amplitude and phase of the energy coupled to the antenna 4 from the space, and the
该第二信号检测耦合段612耦合天线5上的能量,该检测模块605对所述第二信号检测耦合段612耦合的能量进行检测,检测天线5从空间中耦合到天线4的能量与第二耦合器耦合的能量在天线5的接收链路上是否相互对消,控制模块604根据检测模块605的检测结果控制第二信号幅相调节模块611调节第二耦合段613从天线4的发射链路上耦合能量的幅度和相位。The second signal
由上可以看出,本发明实施例的一种提高天线隔离度的系统中,第二耦合器从天线4的发射链路上耦合能量,该第二耦合器耦合的能量与天线5从空间中耦合到天线4的能量的幅度相等,相位相反,该第二耦合器耦合的能量传输给天线5,从而与天线5从空间中耦合到天线4的能量对消,提高了天线5的隔离度。It can be seen from the above that in a system for improving antenna isolation in the embodiment of the present invention, the second coupler couples energy from the transmission link of the antenna 4, and the energy coupled by the second coupler is coupled with the antenna 5 from the space. The amplitude of the energy coupled to the antenna 4 is equal and the phase is opposite. The energy coupled by the second coupler is transmitted to the antenna 5, thereby canceling the energy coupled from the antenna 5 to the antenna 4 from space, and improving the isolation of the antenna 5 .
可以理解的是,对于该第二耦合器从天线4的发射链路上耦合的能量与天线5从空间中耦合到天线4上的能量的幅度相等,相位相反可以存在一定的误差,只要使第二耦合器从天线4的发射链路上耦合的能量与天线5从空间中耦合到天线4的能量基本对消,即可提高天线5的隔离度。即通过第二信号幅相调节模块611对耦合到的能量进行调节后,第二耦合器从天线4的发射链路上耦合到的能量的幅度误差允许范围是天线5从空间中耦合到天线4能量的幅度的±20%,从天线4的发射链路上耦合到的能量的相位误差允许范围是天线5从空间耦合到天线4能量的相位的±10度。It can be understood that, for the energy coupled by the second coupler from the transmission link of the antenna 4 and the energy coupled by the antenna 5 from the space to the antenna 4, the amplitude is equal, and there may be a certain error in the opposite phase, as long as the first The energy coupled by the two couplers from the transmission link of the antenna 4 and the energy coupled by the antenna 5 to the antenna 4 from the space are basically canceled, so that the isolation of the antenna 5 can be improved. That is, after the coupled energy is adjusted by the second signal amplitude and
可见,本发明实施例中,通过有源耦合器6,使得在天线4上,从空间中耦合到的天线5上的能量与从天线5的发射链路上耦合到的能量对消;同样的,在天线5上,从空间中耦合到的天线4上的能量与从天线4的发射链路上耦合到的能量也对消,从而提高了天线4、天线5间的隔离度。It can be seen that in the embodiment of the present invention, through the active coupler 6, on the antenna 4, the energy coupled to the antenna 5 from the space and the energy coupled to the transmission link of the antenna 5 are cancelled; the same , on the antenna 5, the energy coupled to the antenna 4 from the space and the energy coupled to the transmission link of the antenna 4 are also canceled, thereby improving the isolation between the antenna 4 and the antenna 5.
可以理解的是,对于采用有源耦合器的提高天线隔离度的系统中,天线4和天线5可以同时具有接收信号和发射信号的功能,此时,天线4和天线5需要采用有源耦合器;天线4可以具有接收信号的功能,天线5具有发射信号的功能,此时,天线4和天线5可以采用第一耦合器;天线5具有接收信号的功能,天线4具有发射信号的功能,此时,天线4和天线5可以采用第二耦合器。It can be understood that, for a system that uses an active coupler to improve antenna isolation, antenna 4 and antenna 5 can simultaneously have the functions of receiving signals and transmitting signals. At this time, antenna 4 and antenna 5 need to use active couplers Antenna 4 can have the function of receiving signal, and antenna 5 has the function of transmitting signal, and at this moment, antenna 4 and antenna 5 can adopt the first coupler; Antenna 5 has the function of receiving signal, and antenna 4 has the function of transmitting signal, here , antenna 4 and antenna 5 can use the second coupler.
本发明实施例四提供一种有源耦合器6,如图4所示,包括:Embodiment 4 of the present invention provides an active coupler 6, as shown in FIG. 4, including:
第一耦合器,用于根据天线4从空间中耦合到的天线5上的能量的幅度和相位,从天线5的发射链路上耦合能量,将从天线5的发射链路上耦合到的能量传输给天线4,其中,该第一耦合器从天线5的发射链路上耦合的能量与天线4从空间中耦合到天线5上的能量的幅度相等,相位相反。The first coupler is used for coupling energy from the transmission link of the antenna 5 according to the amplitude and phase of the energy coupled to the antenna 5 from the antenna 4 from space, and the energy coupled to the transmission link from the antenna 5 It is transmitted to the antenna 4, wherein the energy coupled by the first coupler from the transmission link of the antenna 5 is equal to the energy coupled from the space of the antenna 4 to the antenna 5, and the phase is opposite.
其中,该第一耦合器包括第一信号幅相调节模块601、第一信号检测耦合段602、第一耦合段603、控制模块604和检测模块605,该第一信号幅相调节模块601一端与天线4的接收链路连接,该第一信号幅相调节模块601另一端与第一耦合段603连接,该第一信号幅相调节模块601还与该控制模块604连接,该第一耦合段603与天线5耦合,该第一信号检测耦合段602与天线4耦合并与检测模块605连接,该检测模块605与该控制模块604连接。Wherein, the first coupler includes a first signal amplitude and
该第一耦合段603从天线5的发射链路上耦合能量,并将该耦合到的能量传输给第一信号幅相调节模块601,第一信号幅相调节模块601将该耦合到的能量传输给天线4,此时,第一信号检测耦合段602会对传输到天线4上的能量进行耦合,所述检测模块605对所述第一信号检测耦合段602耦合的能量进行检测,检测天线4从空间中耦合到天线5的能量与第一耦合器耦合的能量在天线4的接收链路上是否相互对消,控制模块604根据检测模块605的检测结果控制第一信号幅相调节模块601调节第一耦合段603从天线5的发射链路上耦合能量的幅度和相位。The
该第一信号幅相调节模块601包括第一放大器6011和第一调相器6012,控制模块604控制第一放大器6011对耦合到的能量进行幅度调节,以使从天线5的发射链路上耦合到的能量与天线4从空间中耦合到天线5上的能量的幅度相等,控制模块604控制第一调相器6012,以使从天线5的发射链路上耦合到的能量与天线4从空间中耦合到天线5上的能量的相位反相。The first signal amplitude and
第二耦合器,用于根据天线5从空间中耦合到的天线4上的能量的幅度和相位,从天线4的发射链路上耦合能量,将从天线4的发射链路上耦合到的能量传输给天线5,其中,该第二耦合器从天线4的发射链路上耦合的能量与天线5从空间中耦合到天线4上的能量的幅度相等,相位相反。The second coupler is used to couple energy from the transmission link of the antenna 4 according to the amplitude and phase of the energy coupled to the antenna 4 by the antenna 5 from space, and couple the energy coupled to the transmission link from the antenna 4 transmitted to the antenna 5, wherein the energy coupled by the second coupler from the transmission link of the antenna 4 is equal to the energy coupled from the space to the antenna 4 by the antenna 5, and the phase is opposite.
其中,该第二耦合器包括第二信号幅相调节模块611、第二信号检测耦合段612、第二耦合段613、控制模块604和检测模块605,该第二信号幅相调节模块611一端与天线5的接收链路连接,第二信号幅相调节模块611另一端与第二耦合段613连接,第二信号幅相调节模块611还与控制模块604连接,第二耦合模块613与天线4耦合,所述第二信号检测耦合段612与天线5耦合并与检测模块605连接,该检测模块605与该控制模块604连接。Wherein, the second coupler includes a second signal amplitude and
该第二耦合段613从天线4的发射链路上耦合能量,并将该耦合到的能量传输给第二信号幅相调节模块611,第二信号幅相调节模块611将该耦合到的能量传输给天线5,此时,第二信号检测耦合段612会对传输到天线5上的能量耦合,所述检测模块605对所述第二信号检测耦合段612耦合的能量进行检测,检测天线5从空间中耦合到天线4的能量与第二耦合器耦合的能量在天线5的接收链路上是否相互对消,控制模块604根据检测模块605的检测结果控制第二信号幅相调节模块611调节第二耦合段613从天线4的发射链路上耦合能量的幅度和相位。The
该第二信号幅相调节模块611包括第二放大器6111和第二调相器6112,控制模块604控制第二放大器6111对耦合到的能量进行幅度调节,以使从天线4的发射链路上耦合到的能量与天线5从空间中耦合到天线4上的能量的幅度相等,控制模块604控制第二调相器6112,以使从天线4的发射链路上耦合到的能量与天线5从空间中耦合到天线4上的能量的相位反相。The second signal amplitude and
在实际的应用中,可以在天线上添加一些模块或器件,以完善天线在不同场景中的应用。例如,在天线4和/或天线5的发射链路上加入无放大作用的模块或器件,如电视信号接收器,以同时接收电视信号。该加入的模块可以在天线发射链路之前,也可以在天线发射链路之后,也可以前后都加,而且加入的模块对该耦合器没有影响,该耦合器可以是无源耦合器,也可以是有源耦合器。In practical applications, some modules or devices can be added to the antenna to improve the application of the antenna in different scenarios. For example, a non-amplifying module or device, such as a TV signal receiver, is added to the transmitting chain of the antenna 4 and/or the antenna 5 to simultaneously receive TV signals. The added module can be added before the antenna transmission link, after the antenna transmission link, or both before and after, and the added module has no effect on the coupler. The coupler can be a passive coupler or is an active coupler.
本发明实施例五提出一种提高天线隔离度的方法,如图5所示,包括:Embodiment 5 of the present invention proposes a method for improving antenna isolation, as shown in FIG. 5 , including:
步骤S501,天线A从空间中耦合到天线B上的能量。Step S501, Antenna A couples energy to Antenna B from space.
具体的,在有限的空间内,天线间会有相互的影响,在两个或两个以上的天线间,相隔的距离越近,工作频率越接近,相互的空间能量耦合就越强。在空间中,天线A将会从空间中耦合到其它天线上的能量,也就是天线A耦合到空间中与天线A有联系的其它天线上的能量。Specifically, in a limited space, there will be mutual influence between antennas. Between two or more antennas, the closer the distance is, the closer the operating frequency is, and the stronger the mutual spatial energy coupling is. In space, antenna A will couple energy to other antennas from space, that is, the energy that antenna A couples to other antennas that are connected to antenna A in space.
步骤S502,耦合器根据从空间中耦合到的天线B上的能量的幅度和相位从天线B的发射链路上耦合能量,该耦合器耦合到的能量与天线A从空间中耦合到的天线B上的能量的幅度相同、相位反相。Step S502, the coupler couples energy from the transmission link of the antenna B according to the amplitude and phase of the energy coupled to the antenna B from the space, and the energy coupled to the coupler is the same as the antenna B coupled to the antenna A from the space The energies above have the same amplitude and opposite phase.
可以理解的是,该幅度相等,相位相反是可以存在一定的误差的。该耦合器可以为上述实施例中的无源耦合器或上述实施例中的有源耦合器。在此,不再重述。It can be understood that there may be a certain error if the amplitudes are equal and the phases are opposite. The coupler may be the passive coupler in the above embodiment or the active coupler in the above embodiment. Here, it will not be repeated.
同样的,天线B也可以通过该耦合器从天线A的发射链路上耦合到与从空间中耦合到的天线A上的能量幅度相同、相位反相,然后将天线B上的能量对消,从而提高天线B的隔离度。Similarly, the antenna B can also be coupled from the transmission link of the antenna A to the energy amplitude of the antenna A coupled from the space through the coupler, and the phase is reversed, and then the energy on the antenna B is canceled, Therefore, the isolation of antenna B is improved.
可见,本发明实施例中,通过使用耦合器,在天线A的发射链路上耦合一部分能量,使之与从天线B通过空间耦合到的能量达到幅度相同,相位反相,在链路上实现相互抵消,从而提高了天线的隔离度。It can be seen that in the embodiment of the present invention, by using a coupler, a part of energy is coupled on the transmission link of antenna A, so that it has the same amplitude as the energy coupled from antenna B through space, and the phase is reversed, and the link is realized cancel each other, thereby improving the isolation of the antenna.
对于上述实施例一种提高天线隔离度的系统,针对采用无源耦合器的提高天线隔离度的系统,通过天线1和天线2进行了阐述;针对采用有源耦合器的提高天线隔离度的系统,通过天线4和天线5进行了阐述。可以理解的是,一种提高天线隔离度的系统也可以应用于多个天线中(如有三个天线时:一个天线接收信号,其它天线发射信号;或一个天线发射信号,其它天线接收信号),本发明实施例一种提高天线隔离度的系统并不局限于应用于两个天线,或三个天线中。Regarding the system for improving antenna isolation in the above-mentioned embodiment, the system for improving antenna isolation using a passive coupler is described through antenna 1 and antenna 2; for the system for improving antenna isolation using an active coupler , are illustrated by antenna 4 and antenna 5. It can be understood that a system for improving antenna isolation can also be applied to multiple antennas (for example, when there are three antennas: one antenna receives signals and other antennas transmit signals; or one antenna transmits signals and other antennas receive signals), A system for improving antenna isolation in an embodiment of the present invention is not limited to being applied to two antennas or three antennas.
以上所述仅是本发明的优选实施方式,应当指出,对于本技术领域的普通技术人员来说,在不脱离本发明原理的前提下,还可以做出若干改进和润饰,这些改进和润饰也应视本发明的保护范围。The above is only a preferred embodiment of the present invention, it should be pointed out that, for those of ordinary skill in the art, without departing from the principle of the present invention, some improvements and modifications can also be made, and these improvements and modifications can also be made. It should be regarded as the protection scope of the present invention.
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