WO2014026319A1 - 天线故障的检测方法与装置 - Google Patents

天线故障的检测方法与装置 Download PDF

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Publication number
WO2014026319A1
WO2014026319A1 PCT/CN2012/080047 CN2012080047W WO2014026319A1 WO 2014026319 A1 WO2014026319 A1 WO 2014026319A1 CN 2012080047 W CN2012080047 W CN 2012080047W WO 2014026319 A1 WO2014026319 A1 WO 2014026319A1
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Prior art keywords
antenna
signal
fault
frequency
maximum
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PCT/CN2012/080047
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English (en)
French (fr)
Inventor
岳建军
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华为技术有限公司
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Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to PCT/CN2012/080047 priority Critical patent/WO2014026319A1/zh
Priority to CN201280016805.4A priority patent/CN103596637B/zh
Publication of WO2014026319A1 publication Critical patent/WO2014026319A1/zh

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B17/00Monitoring; Testing
    • H04B17/10Monitoring; Testing of transmitters
    • H04B17/15Performance testing
    • H04B17/17Detection of non-compliance or faulty performance, e.g. response deviations

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a method and apparatus for detecting antenna faults. Background technique
  • AAS Active Antenna
  • the active antenna system uses the RF multi-channel technology to control the vertical sub-array and the horizontal sub-array of the antenna, and flexibly controls the vertical and horizontal beams of the antenna to improve the coverage quality of the wireless signal.
  • the purpose of capacity is not limited to, but not limited to, but not limited to, but not limited to, but not limited to, but not limited to, but not limited to, but not limited to, but not limited to, but not limited to, but not limited to control the vertical sub-array and the horizontal sub-array of the antenna, and flexibly controls the vertical and horizontal beams of the antenna to improve the coverage quality of the wireless signal.
  • the purpose of capacity is not limited to control the vertical sub-array and the horizontal sub-array of the antenna, and flexibly controls the vertical and horizontal beams of the antenna to improve the coverage quality of the wireless signal.
  • the standing wave detection circuit is added to perform antenna failure detection.
  • the standing wave detection method is used when the user uses the terminal to make a call.
  • the terminal transmits the radio frequency signal
  • the power of the transmitted radio frequency signal and the reflected signal reflected by the antenna are detected, and the power of the transmitted radio frequency signal and the reflected signal reflected by the antenna are used.
  • the power calculates the voltage standing wave ratio (Vol tage Standing Wave Ra io, VSWR ).
  • the duplexer is used to sample the power of the RF signal.
  • the forward coupler performs power detection and coupling processing on the RF signal power.
  • the reverse coupler receives the signal and the output from the forward coupler.
  • the reflected signal after the antenna reflects, and performs power detection and coupling processing on the signal output from the forward coupler and the reflected signal reflected by the antenna, and then converts the analog signal into a digital signal through an analog-to-digital converter, and then passes through the signal processor. Processing, obtaining the antenna fault location, and then obtaining the voltage standing wave ratio.
  • the existing RF signal in the scheme for detecting antenna failure depends on the user making a call. When the user does not make a call, the RF signal cannot be generated, and the antenna fault information cannot be obtained. For obtaining the antenna fault information and calculating the voltage standing wave ratio. bring inconvenience. Summary of the invention
  • the purpose of the present invention is to solve the problem of obtaining antenna failure information after generating a radio frequency signal when a user makes a call in the prior art, and a method and apparatus for detecting an antenna failure are provided.
  • an embodiment of the present invention provides an apparatus for detecting an antenna failure, the apparatus comprising:
  • a sweep source for generating a first sweep signal and a second sweep signal
  • a first directional coupler configured to generate a first coupled signal from the second frequency-swept signal generated by the swept source
  • a second directional coupler configured to perform a coupling process on the first coupled signal generated by the first directional coupler to generate a second coupled signal, transmit the second coupled signal through an antenna, and receive the antenna
  • the antenna reflected signal of the second coupled signal is coupled to generate an antenna coupled reflection signal, and the antenna reflected signal carries information of a maximum fault location of the antenna
  • a radio frequency amplifier configured to: after the antenna coupled reflection signal is amplified, to generate a first reflected signal
  • a delay device configured to delay processing the first reflected signal generated by the radio frequency amplifier to generate a delayed first reflected signal
  • a mixer configured to perform a mixing process on the first frequency-swept signal generated by the frequency sweeper and the delayed first-precision signal generated by the delayer to generate a mixed-frequency signal
  • a signal processor configured to process the mixed signal generated by the mixer to obtain fault information of the antenna.
  • an embodiment of the present invention provides a method for detecting an antenna fault, and the method includes:
  • the second coupling Coupling the first coupled signal to generate a second coupled signal, the second coupling And transmitting, by the antenna, an antenna reflection signal of the second coupled signal, where the antenna reflected signal carries information of a maximum fault location of the antenna;
  • Processing the mixed signal to obtain fault information of the antenna Generating the first frequency sweep signal and the second scan signal, and transmitting the second frequency sweep signal through the first coupler and the second directional coupler through the antenna, and receiving the reflected signal through the antenna, and the first frequency sweep signal and the reflected signal
  • the mixing process is performed to generate a mixing signal, and the fault information of the antenna is obtained from the mixed signal, thereby solving the problem in the prior art that the antenna fault information is obtained after the user generates a radio frequency signal when making a call.
  • FIG. 1 is a diagram of a device for detecting an antenna failure in the prior art
  • FIG. 2 is a diagram of an apparatus for detecting an antenna failure according to an embodiment of the present invention.
  • FIG. 3 is a flowchart of a detection signal of an antenna fault according to an embodiment of the present invention.
  • FIG. 4 is a flowchart of a method for detecting an antenna fault according to an embodiment of the present invention. detailed description
  • FIG. 2 is a schematic diagram of an apparatus for detecting an antenna fault according to an embodiment of the present invention.
  • the detecting device for the antenna failure includes: a sweep source 200, a first directional coupler 210, a second directional coupler 220, a radio frequency amplifier 230, a delay device 240, and a mixer 250. And signal processor 260.
  • the frequency sweep source 210 is configured to generate a first frequency sweep signal and a second frequency sweep signal.
  • the frequency range scanned by the sweep source 200 is not less than 10M, and the scanned bandwidth can be configured as needed.
  • the scanned frequency range is 10M, and multiple points need to be scanned in the frequency range of the frequency sweep.
  • the distance between the scanning point and the scanning point is the bandwidth of the scanning.
  • the bandwidth is 1M, and the scanning bandwidth is determined according to the number of scanning points.
  • the scanning source 200 uses the scanning bandwidth within the set time ( For example, 1M) sweeps the band power, and outputs the first frequency sweep signal and the second frequency sweep signal.
  • the sweep source 200 transmits the generated first frequency sweep signal to a local oscillator (Loca l Os iducer , L0 ) port of the mixer 250, and transmits the generated second frequency sweep signal to the first directional coupling 220.
  • a local oscillator Loca l Os iducer , L0
  • the first directional coupler 210 is configured to generate a first coupling signal from the second frequency sweep signal generated by the sweep source.
  • the first directional coupler 210 receives the second frequency sweep signal generated by the frequency sweep source 200, performs coupling processing on the second frequency sweep signal, generates a first coupled signal, and The first coupled signal is transmitted to the second directional coupler 220; the first directional coupler 210 is a capacitive coupler.
  • a second directional coupler 220 configured to perform a coupling process on the first coupled signal generated by the first directional coupler, generate a second coupled signal, transmit the second coupled signal through an antenna, and transmit the antenna
  • the received antenna reflected signal of the second coupled signal is coupled to generate an antenna coupled reflected signal, wherein the antenna reflected signal carries information of a maximum fault location of the antenna.
  • the second directional coupler 220 receives the first coupled signal generated by the first directional coupler 210, and performs coupling processing on the first coupled signal to generate a second coupled signal. Transmitting the second coupled signal through an antenna; when there is a fault in the antenna, the second The coupled signal is reflected at the fault of the antenna to generate an antenna reflected signal, where the antenna reflected signal carries information of the maximum fault location of the antenna; the second directional coupler 220 receives the reflected signal of the antenna through the antenna, and reflects the signal of the antenna After the coupling process is performed, the antenna coupled reflection signal is generated, and the antenna coupled reflection signal is transmitted to the RF amplifier 230. It should be noted that the antenna coupled reflection signal carries the information of the maximum fault location of the antenna.
  • the RF amplifier 230 is configured to perform amplification processing on the antenna coupled reflection signal, generate a first reflected signal, and transmit the first reflected signal to the delayer 240. It should be noted that, in the first reflected signal It carries information about the maximum fault location of the antenna.
  • the delay unit 240 is configured to delay processing the first reflected signal generated by the radio frequency amplifier 230 to generate a delayed first reflected signal.
  • the delayer 240 receives the first reflected signal processed by the RF amplifier 230, performs delay processing on the first reflected signal, and generates a delayed first reflected signal, and the delay is performed.
  • the first reflected signal is transmitted to the Radio Frequency (RF) port of the mixer 250.
  • RF Radio Frequency
  • the mixer 250 is configured to perform a mixing process on the first frequency sweep signal generated by the frequency sweeper 200 and the delayed first reflected signal generated by the delay unit 240 to generate a mixed frequency signal.
  • the L0 port of the mixer 250 receives the first frequency sweep signal generated by the frequency sweep source 210, and the RF port of the mixer 250 receives the delayed first reflected signal,
  • the first swept frequency signal and the delayed first reflected signal are mixed to generate a mixed signal, wherein the mixed signal carries information of a maximum fault location of the antenna;
  • the mixer 250 is at an intermediate frequency (Intermedia te Frenquency) , the IF port outputs the mixed signal.
  • the signal processor 260 is configured to process the mixed signal generated by the mixer 250 to obtain fault information of the antenna.
  • the device further includes: a low pass filter 270, configured to receive the mixed signal from an IF port of the mixer 250, and perform low pass filtering processing on the mixed signal, and output filtering Mixing signal
  • the operational amplifier 280 is configured to perform amplification processing on the filtered mixed signal output by the low pass filter 270 to generate an amplified low pass filtered signal;
  • the analog to digital converter 290 is configured to convert the amplified low pass filtered signal generated by the operational amplifier 280 from an analog signal to a digital signal to generate a digital amplified low pass filtered signal, which is sent to the signal processor 26G for processing.
  • the low pass filter 270, the operational amplifier 280, and the analog to digital converter 290 described above are all optional devices, and the above three devices may be integrated in the signal processor 260 by the signal processor.
  • the 26G performs low-pass filtering, amplification, and analog-to-digital conversion processing on the signal input from the mixer 25G.
  • the signal processor 260 is further configured to: perform inverse Fourier transform processing on the mixed signal to obtain a peak fault position of an antenna and a peak fault position of an antenna, and use the antenna
  • the maximum fault location and the peak voltage of the antenna's maximum fault location calculate the maximum fault test location of the antenna. It should be noted that the information about the maximum fault location of the antenna carries the maximum fault location of the antenna, and the maximum fault location of the antenna is the location where the antenna fault is the most serious, and the location is the maximum range of the antenna fault, and the peak of the maximum fault location of the antenna.
  • the voltage is the voltage corresponding to the location where the antenna is most severely faulty.
  • the signal processor 260 is further configured to: receive the processed by the low pass filter 270, the operational amplifier 280, and the analog to digital converter 290 a mixed signal, and then inversely transforming the processed mixed signal to obtain a peak fault voltage of the antenna and a peak voltage of the maximum fault position of the antenna; and using the maximum fault position of the antenna and the peak voltage of the maximum fault position of the antenna Calculate the maximum fault test position of the antenna.
  • the maximum fault test position of the antenna can be obtained by formula 1:
  • the maximum fault location of the antenna is a Fourier transform point
  • the /1 represents a starting frequency of the sweep frequency of the sweep source
  • /2 represents a cutoff frequency of the sweep source to stop sweeping
  • the fl is the peak voltage of the maximum fault location of the antenna
  • the number is the number of sweep points.
  • the signal processor 260 is further specifically configured to: utilize the antenna maximum fault test position meter; the true position of the line fault, and the true position of the antenna fault is obtained by Equation 2:
  • the signal processor 260 is also configured to: calculate the correction value of the maximum peak voltage fli fault position of the antenna with the real position of the antenna failure, the correction value of the antenna 3 ⁇ 4 maximum peak voltage fault location can be obtained by the formula III:
  • the signal processor 260 is further configured to: utilize a correction value of a peak voltage vpeak of a maximum fault location of the antenna.
  • the antenna reflection coefficient can be obtained by Equation 4, as follows:
  • the signal processor 260 is further configured to: calculate an antenna fault point standing wave ratio by using the antenna reflection coefficient ,, the antenna fault point standing wave ratio raw 1 +
  • the first frequency sweep signal and the second scan signal are generated by using the sweep source, and the second frequency sweep signal is passed through the first directional coupler, After the directional coupler is transmitted through the antenna, and receives the reflected signal through the antenna, the mixer performs mixing processing on the first swept frequency signal and the reflected signal to generate a mixed signal, and the signal processor obtains the fault information of the antenna from the mixed signal. Therefore, the antenna fault detection in the prior art is solved depending on when the user makes a call. The problem of RF signals improves the flexibility of detecting antenna faults.
  • Step 410 Generate a first frequency sweep signal and a second frequency sweep signal.
  • the frequency range scanned by the sweep source is not less than 10M, and the scanned bandwidth can be configured according to requirements.
  • the scanned frequency range is 10M, and multiple points are scanned in the frequency range of the frequency sweep, and the scan point is The distance between the scanning points is the bandwidth of the scanning. If the scanning is 10 points, the bandwidth is 1M, and the scanning bandwidth is determined according to the scanning points.
  • the scanning source uses the scanning bandwidth (for example, 1M) to the band power within the set time. Performing frequency sweeping, outputting the first frequency sweep signal and the second frequency sweep signal.
  • Step 420 Coupling the second frequency-swept signal to generate a first coupled signal.
  • the first coupled signal is generated.
  • the coupling processing of the second swept frequency signal is specifically performed by capacitive coupling processing, but the coupling manner is not limited to Capacitive coupling.
  • Step 430 Perform coupling processing on the first coupled signal to generate a second coupled signal, transmit the second coupled signal through an antenna, and receive an antenna reflected signal of the second coupled signal through the antenna, where The antenna reflection signal carries information of the maximum fault location of the antenna.
  • the first coupled signal is coupled to generate a second coupled signal, and the second coupled signal is transmitted through the antenna.
  • the second coupled signal is reflected at the fault of the antenna to generate
  • the antenna reflects the signal, and receives an antenna reflection signal of the second coupled signal through an antenna, where the antenna reflection signal carries information of a maximum fault location of the antenna.
  • Step 440 After coupling the reflected signals of the antenna, generate an antenna coupled reflection signal.
  • the antenna reflected signal is coupled to generate an antenna coupled reflection signal.
  • the coupling processing of the antenna coupled reflection signal may be capacitive coupling processing, but the coupling manner is not limited to capacitive coupling.
  • the antenna is coupled to the reflected signal and carried Information about the maximum fault location of the antenna.
  • Step 450 Perform amplification processing on the antenna coupled reflection signal to generate a first reflected signal.
  • Step 460 Perform delay processing on the first reflected signal to generate a delayed first reflected signal.
  • Step 470 Perform mixing processing on the first frequency sweep signal and the delayed first reflected signal to generate a mixed frequency signal.
  • Step 480 Process the mixed signal to obtain fault information of the antenna.
  • the maximum fault test position of the antenna is calculated using the maximum fault location of the antenna and the peak voltage of the maximum fault location of the antenna.
  • the information about the maximum fault location of the antenna carries the maximum fault location of the antenna, and the maximum fault location of the antenna is the location where the antenna fault is the most serious, and the location is the maximum range of the antenna fault, and the peak of the maximum fault location of the antenna.
  • the voltage is the voltage corresponding to the location where the antenna is most severely faulty.
  • the mixed signal may be subjected to low-pass filtering processing to output a filtered mixed signal; and the filtered mixed signal is amplified to generate a low amplification filter. a pass signal; converting the amplified low pass signal from an analog signal to a digital signal to generate a digital amplified low pass filtered signal.
  • Performing inverse Fourier transform processing on the generated digital amplified low-pass filtered signal obtaining the peak fault voltage of the antenna and the peak voltage of the maximum fault position of the antenna, and calculating the maximum fault of the antenna by using the maximum fault location of the antenna and the peak voltage of the maximum fault location of the antenna Test location.
  • Equation 1 the maximum fault test position of the antenna.
  • the maximum fault location of the antenna is a Fourier transform point
  • the /1 represents a starting frequency of the sweep frequency of the sweep source
  • /2 represents a cutoff frequency of the sweep source to stop sweeping
  • the fl is the peak voltage of the maximum fault location of the antenna
  • the ⁇ is the number of sweep points.
  • the actual position of the antenna fault is calculated by using the maximum fault test position of the antenna, and the real position L real of the antenna fault can be obtained by formula 2:
  • a correction value of the peak voltage Vpeak of the maximum fault position of the antenna is calculated using the antenna fault true position L real . 3 ⁇ 4 , the correction value fli of the peak voltage V of the maximum fault position of the antenna can be obtained by the formula 3:
  • V _ (Formula 3) where, the antenna loss.
  • Equation 4 A correction value of the peak voltage V at the maximum fault position of the antenna is utilized. Calculating the antenna reflection coefficient ⁇ , the antenna reflection coefficient can be obtained by Equation 4, as follows:
  • Rt , v are open circuit and short circuit calibration voltage
  • the signal processor 260 is further configured to: calculate an antenna fault point standing wave ratio by using the antenna reflection coefficient ,, the antenna fault point standing wave ratio vswr
  • the second scan signal after the second swept frequency signal is coupled, is transmitted through the antenna, and receives the reflected signal through the antenna, and the mixer performs mixing processing on the first swept frequency signal and the reflected signal to generate a mixed signal, and the signal processor
  • the fault information of the antenna is obtained from the mixed signal, thereby solving the problem that the antenna fault detection in the prior art depends on the radio frequency signal generated when the user dials the telephone, and the flexibility for detecting the antenna fault is improved.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Monitoring And Testing Of Transmission In General (AREA)

Abstract

本发明实施例涉及一种天线故障的检测方法与装置。所述装置包括:扫频源,用于产生第一扫频信号和第二扫频信号;第一定向耦合器,用于将第二扫频信号生成第一耦合信号;第二定向耦合器,用于将第一耦合信号进行耦合处理,生成第二耦合信号,将第二耦合信号通过天线发射,并将天线接收第二耦合信号的天线反射信号进行耦合处理,生成天线耦合反射信号;射频放大器,用于将天线耦合反射信号经放大处理后,生成第一反射信号;延时器,用于将第一反射信号进行延时处理,生成延时第一反射信号;混频器,用于将第一扫频信号和延时第一反射信号进行混频处理,生成混频信号;信号处理器,用于对混频器生成的混频信号进行处理,获得天线的故障信息。

Description

天线故障的检测方法与装置 技术领域
本发明涉及通讯技术领域, 尤其涉及一种天线故障的检测方法与装置。 背景技术
随着移动通信的迅速发展,有源天线系统(Act ive Antenna Sys tem, AAS ) 日益广泛应用于通讯、 卫星导航和航天测控等领域。
有源天线系统釆用射频多通道的技术对天线的垂直方向的子阵列和水平 方向的子阵列进行控制, 灵活的控制天线在垂直和水平方向的波束, 从而达 到改善无线信号的覆盖质量提升网络容量的目的。
目前,现有技术检测有源天线故障的方案中,釆用增加驻波检测电路进行 天线故障检测。 驻波检测方式釆用在用户使用终端拨打电话, 终端发射射频 信号时, 检测发射射频信号的功率和经天线反射后的反射信号的功率, 利用 发射射频信号的功率和经天线反射后的反射信号的功率计算电压驻波比 ( Vol tage Standing Wave Ra t io, VSWR ) 。
如图 1所示,釆用双工器对射频信号功率进行釆样,前向耦合器对射频信 号功率进行功率检测和耦合处理, 反向耦合器接收部分经前向耦合器输出的 信号和经天线反射后的反射信号, 并对前向耦合器输出的信号和经天线反射 后的反射信号进行功率检测和耦合处理, 然后经模数转换器将模拟信号转变 为数字信号, 再经信号处理器处理, 获取天线故障位置, 进而得到电压驻波 比。 但是, 现有检测天线故障的方案中的射频信号依赖于用户拨打电话, 在 用户不拨打电话时, 则无法产生射频信号, 也无法获取天线故障信息, 对于 获取天线故障信息和计算电压驻波比带来不便。 发明内容
本发明的目的是为了解决现有技术中依赖于用户拨打电话时产生射频信 号后获取天线故障信息的问题, 提供了一种天线故障的检测方法与装置。
在第一方面,本发明实施例提供了一种天线故障的检测装置,所述装置包 括:
扫频源, 用于产生第一扫频信号和第二扫频信号;
第一定向耦合器,用于将所述扫频源产生的第二扫频信号生成第一耦合信 号;
第二定向耦合器,用于将所述第一定向耦合器生成的第一耦合信号进行耦 合处理, 生成第二耦合信号, 将所述第二耦合信号通过天线发射, 并对所述 天线接收的所述第二耦合信号的天线反射信号进行耦合处理, 生成天线耦合 反射信号, 所述天线反射信号携带天线最大故障位置的信息;
射频放大器,用于将所述天线耦合反射信号经放大处理后,生成第一反射 信号;
延时器,用于将所述射频放大器生成的第一反射信号进行延时处理,生成 延时第一反射信号;
混频器,用于将所述扫频器产生的第一扫频信号和所述延时器生成的延时 第一反射信号进行混频处理, 生成混频信号;
信号处理器,用于对所述混频器生成的混频信号进行处理,获得所述天线 的故障信息。
在第二方面,本发明实施例提供了一种天线故障的检测方法,所述方法包 括:
产生第一扫频信号和第二扫频信号;
将所述第二扫频信号耦合后生成第一耦合信号;
将所述第一耦合信号进行耦合处理,生成第二耦合信号,将所述第二耦合 信号通过天线发射, 并通过所述天线接收所述第二耦合信号的天线反射信号, 所述天线反射信号中携带天线最大故障位置的信息;
对所述天线反射信号耦合后, 生成天线耦合反射信号;
对所述天线耦合反射信号进行放大处理, 生成第一反射信号;
对所述第一反射信号进行延时处理, 生成延时第一反射信号;
将所述第一扫频信号和所述延时第一反射信号进行混频处理,生成混频信 号;
对所述混频信号进行处理, 获得所述天线的故障信息。 生第一扫频信号和第二扫描信号, 将第二扫频信号经过第一耦合器、 第二定 向耦合器后通过天线发射, 并通过天线接收反射信号, 将第一扫频信号和反 射信号进行混频处理生成混频信号, 从混频信号中获取天线的故障信息, 从 而解决现有技术中依赖于用户拨打电话时产生射频信号后获取天线故障信息 的问题。 附图说明
图 1为现有技术中天线故障的检测装置图;
图 2为本发明实施例提供的天线故障的检测装置图;
图 3为本发明实施例提供的天线故障的检测信号流程图;
图 4为本发明实施例提供的天线故障的检测方法流程图。 具体实施方式
为使本发明的目的、技术方案和优点更加清楚,下面结合附图对本发明具 体实施例作进一步的详细描述。
下面以图 2为例并结合图 3详细说明本发明实施例提供的天线故障的检测 装置, 图 2为本发明实施例提供的天线故障的检测装置图; 图 3为本发明实 施例提供的天线故障的检测信号流程图。
如图 2所示, 在所述天线故障的检测装置中包括: 扫频源 200、 第一定向 耦合器 210、 第二定向耦合器 220、 射频放大器 230、 延时器 240、 混频器 250 和信号处理器 260。
扫频源 210, 用于产生第一扫频信号和第二扫频信号。
具体地, 如图 3所示, 扫频源 200扫描的频段范围不低于 10M, 扫描的带 宽可根据需要配置, 例如, 扫描的频段范围为 10M, 在扫频的频段范围内需扫 描多个点, 所述扫描点与扫描点之间的距离为所述扫描的带宽, 如扫描 10个 点, 则带宽为 1M, 根据扫描点数确定扫描带宽, 扫频源 200在设置的时间内 以扫描带宽 (例如, 1M )对频带功率进行扫频, 输出所述第一扫频信号和所 述第二扫频信号。
扫频源 200将产生的所述第一扫频信号传输至混频器 250的本振(Loca l Osc iducer , L0 )端口,将产生的所述第二扫频信号传输至第一定向耦合器 220。
第一定向耦合器 210 ,用于将所述扫频源产生的第二扫频信号生成第一耦 合信号。
具体地,如图 3所示,第一定向耦合器 210接收扫频源 200产生的第二扫 频信号, 将所述第二扫频信号进行耦合处理, 生成第一耦合信号, 并将所述 第一耦合信号传输至第二定向耦合器 220;所述第一定向耦合器 210为电容耦 合器。
第二定向耦合器 220 ,用于将所述第一定向耦合器生成的第一耦合信号进 行耦合处理, 生成第二耦合信号, 将所述第二耦合信号通过天线发射, 并对 所述天线接收的所述第二耦合信号的天线反射信号进行耦合处理, 生成天线 耦合反射信号, 其中, 所述天线反射信号携带天线最大故障位置的信息。
具体地, 如图 3所示, 第二定向耦合器 220接收所述第一定向耦合器 210 生成的第一耦合信号, 将所述第一耦合信号再次进行耦合处理, 生成第二耦 合信号, 将所述第二耦合信号通过天线发射; 当天线存在故障时, 所述第二 耦合信号在天线的故障处发生反射, 生成天线反射信号, 所述天线反射信号 携带天线最大故障位置的信息; 第二定向耦合器 220通过天线接收所述天线 反射信号, 并将所述天线反射信号进行耦合处理后, 生成天线耦合反射信号, 并将所述天线耦合反射信号传输至射频放大器 230 , 需要说明的是, 在所述天 线耦合反射信号中携带了天线最大故障位置的信息。
射频放大器 230 , 用于将所述天线耦合反射信号进行放大处理, 生成第一 反射信号, 并将所述第一反射信号传输至延时器 240; 需要说明的是, 在所述 第一反射信号中携带了天线最大故障位置的信息。
延时器 240 ,用于将所述射频放大器 230生成的所述第一反射信号进行延 时处理, 生成延时第一反射信号。
具体地,如图 3所示,延时器 240接收经射频放大器 230处理后的第一反 射信号, 对所述第一反射信号进行延时处理, 生成延时第一反射信号, 将所 述延时第一反射信号传输至混频器 250的射频( Radio Frequency, RF )端口。
混频器 250 ,用于将所述扫频器 200产生的第一扫频信号和所述延时器 240 生成的延时第一反射信号进行混频处理, 生成混频信号。
具体地, 如图 3所示, 混频器 250的 L0端口接收由扫频源 210产生的第 一扫频信号, 混频器 250的 RF端口接收所述延时第一反射信号, 对所述第一 扫频信号和所述延时第一反射信号进行混频处理, 生成混频信号, 在所述混 频信号中携带了天线最大故障位置的信息;混频器 250在中频( Intermedia te Frenquency, IF )端口输出所述混频信号。
需要说明的是, 对两个信号进行混频处理, 为现有技术, 在此不再赘述。 信号处理器 260 , 用于对所述混频器 250生成的混频信号进行处理, 获得 所述天线的故障信息。
可选地, 所述装置还包括: 低通滤波器 270 , 用于从所述混频器 250的 IF 端口接收所述混频信号, 并对所述混频信号进行低通滤波处理, 输出滤波混 频信号; 运算放大器 280,用于对所述低通滤波器 270输出的滤波混频信号进行放 大处理, 生成放大低通滤波信号;
模数转换器 290,用于将所述运算放大器 280生成的放大低通滤波信号从 模拟信号转换为数字信号, 生成数字放大低通滤波信号, 发送给所述信号处 理器 26G进行处理。
需要说明的是,上述的低通滤波器 270、运算放大器 280和模数转换器 290 均为可选器件, 也可将上述的三个器件集成在所述信号处理器 260 中, 由信 号处理器 26G对从混频器 25G输入的信号进行低通滤波、 放大和模数转换处 理。
进一步地, 如图 3所示, 所述信号处理器 260还用于: 对所述混频信号进 行傅立叶反变换处理, 获取天线最大故障位置和天线最大故障位置的峰值电 压; 并利用所述天线最大故障位置和所述天线最大故障位置的峰值电压计算 天线最大故障测试位置。 需要说明的是, 在所述天线最大故障位置的信息中 携带天线最大故障位置, 所述天线最大故障位置为天线故障最严重的位置, 此位置为天线故障的最大范围, 天线最大故障位置的峰值电压为天线故障最 严重的位置所对应的电压。
如果所述装置中包括低通滤波器 270、运算放大器 280和模数转换器 290, 则信号处理器 260还用于: 接收经低通滤波器 270、运算放大器 280和模数转 换器 290处理后的混频信号, 再对处理后的混频信号进行傅立叶反变换, 获 取天线最大故障位置和天线最大故障位置的峰值电压; 并利用所述天线最大 故障位置和所述天线最大故障位置的峰值电压计算天线最大故障测试位置。
所述天线最大故障测试位置可以通过公式一获得:
Figure imgf000008_0001
其中, 所述 为所述天线最大故障位置, 所述 #为傅里叶变换点数, 所述 /1表示扫频源开始扫频的起始频率; /2表示扫频源停止扫频的截止频率, 所述 fl为所述天线最大故障位置的峰值电压, 所述 为扫频点数。
所述信号处理器 260还具体用于: 利用天线最大故障测试位置 计; 线故障真实位置, 所述天线故障真实位置£ ,可以通过公式二获得:
+ I
其中,所述 。rt、 为天线短路、开路时延等效长度,所述 为介电常数。 所述信号处理器 260还具体用于: 利用所述天线故障真实位置 计算天 线最大故障位置的峰值电压 的修正值 fli , 所述天线最大故障位置的峰值 电压 的修正值 ¾可以通过公式三获得:
(公式三)
其中, 所述 为天线损耗。
所述信号处理器 260还具体用于:利用所述天线最大故障位置的峰值电压 vpeak的修正值 。计算天线反射系数 Γ , 所述天线反射系数可以通过公式四获 得, 具体如下:
Γ = 2 * _ ^ _ (公式四) 其中, 所述 。 rt、 „为天线短路、 开路校准电压;
所述信号处理器 260还具体用于:利用所述天线反射系数 Γ计算天线故障 点驻波比, 所述天线故障点驻波比 raw 1 + |Γ'
1— |Γ| 通过应用本发明实施例提供的天线故障的检测装置,利用扫频源产生第一 扫频信号和第二扫描信号, 将第二扫频信号经过第一定向耦合器、 第二定向 耦合器后通过天线发射, 并通过天线接收反射信号, 混频器将第一扫频信号 和反射信号进行混频处理生成混频信号, 信号处理器从混频信号中获取天线 的故障信息, 从而解决现有技术中天线故障检测依赖于用户拨打电话时产生 的射频信号的问题, 提高了对检测天线故障的灵活性。
为使本发明的目的、技术方案和优点更加清楚,下面结合附图对本发明具 体实施例作进一步的详细描述。 本发明实施例提供的天线故障的检测方法流程图, 具体包括以下步骤:
步骤 410、 产生第一扫频信号和第二扫频信号。
具体地, 扫频源扫描的频段范围不低于 10M, 扫描的带宽可根据需要自行 配置, 例如, 扫描的频段范围为 10M, 在扫频的频段范围内需扫描多个点, 所 述扫描点与扫描点之间的距离为所述扫描的带宽, 如扫描 10个点, 则带宽为 1M, 根据扫描点数确定扫描带宽, 扫频源在设置的时间内以扫描带宽(例如, 1M )对频带功率进行扫频, 输出所述第一扫频信号和所述第二扫频信号。
步骤 420、 将所述第二扫频信号耦合后生成第一耦合信号。
具体地, 将第二扫频信号进行耦合处理后, 生成第一耦合信号, 需要说明 的是, 所述对第二扫频信号进行耦合处理具体是进行电容耦合处理, 但耦合 方式并不限制于电容耦合。
步骤 430、 将所述第一耦合信号进行耦合处理, 生成第二耦合信号, 将所 述第二耦合信号通过天线发射, 并通过所述天线接收所述第二耦合信号的天 线反射信号, 所述天线反射信号中携带天线最大故障位置的信息。
具体地, 将第一耦合信号进行耦合处理, 生成第二耦合信号, 将所述第二 耦合信号通过天线发射, 当天线出现故障时, 所述第二耦合信号在天线的故 障处发生反射, 生成天线反射信号, 通过天线接收所述第二耦合信号的天线 反射信号, 所述天线反射信号携带了天线最大故障位置的信息。
步骤 440、 对所述天线反射信号耦合后, 生成天线耦合反射信号。
具体地, 对所述天线反射信号进行耦合处理, 生成天线耦合反射信号, 需 要说明的是, 所述对天线耦合反射信号进行耦合处理可以是进行电容耦合处 理, 但耦合方式并不限制于电容耦合。 其中, 所述天线耦合反射信号中携带 了天线最大故障位置的信息。
步骤 450、 对所述天线耦合反射信号进行放大处理, 生成第一反射信号。 步骤 460、 对所述第一反射信号进行延时处理, 生成延时第一反射信号。 步骤 470、 将所述第一扫频信号和所述延时第一反射信号进行混频处理, 生成混频信号。
步骤 480、 对所述混频信号进行处理, 获得所述天线的故障信息。
具体地,在对混频信号进行傅立叶反变换处理,获取天线最大故障位置和 天线最大故障位置的峰值电压;
利用所述天线最大故障位置和所述天线最大故障位置的峰值电压计算天 线最大故障测试位置。
需要说明的是, 在所述天线最大故障位置的信息中携带天线最大故障位 置, 所述天线最大故障位置为天线故障最严重的位置, 此位置为天线故障的 最大范围, 天线最大故障位置的峰值电压为天线故障最严重的位置所对应的 电压。
进一步地,在对混频信号进行傅立叶反变换处理之前,还可对所述混频信 号进行低通滤波处理, 输出滤波混频信号; 对所述滤波混频信号进行放大处 理, 生成放大滤波低通信号; 对所述放大滤波低通信号从模拟信号转换为数 字信号, 生成数字放大低通滤波信号。 对生成的数字放大低通滤波信号进行 傅立叶反变换处理, 获取天线最大故障位置和天线最大故障位置的峰值电压, 利用所述天线最大故障位置和所述天线最大故障位置的峰值电压计算天线最 大故障测试位置。
具体地, 所述天线最大故障测试位置可以通过公式一获得:
Figure imgf000011_0001
其中, 所述 为所述天线最大故障位置, 所述 #为傅里叶变换点数, 所述 /1表示扫频源开始扫频的起始频率; /2表示扫频源停止扫频的截止频率, 所述 fl为所述天线最大故障位置的峰值电压, 所述 ^为扫频点数。
利用天线最大故障测试位置 计算天线故障真实位置, 所述天线故障真 实位置 Lreal可以通过公式二获得:
L + I
其中,所述 。rt、 为天线开路、短路时延等效长度,所述 为介电常数。 利用所述天线故障真实位置 Lreal计算天线最大故障位置的峰值电压 Vpeak的 修正值 。¾ , 所述天线最大故障位置的峰值电压 V 的修正值 fli可以通过公 式三获得:
V
V _ (公式三) 其中, 所述 为天线损耗。
利用所述天线最大故障位置的峰值电压 V 的修正值 。计算天线反射系 数 Γ , 所述天线反射系数可以通过公式四获得, 具体如下:
Γ = 2 * _ ^ _ (公式四)
V
其中, 所述 。 rt、 v 为天线开路、 短路校准电压;
所述信号处理器 260还具体用于:利用所述天线反射系数 Γ计算天线故障 点驻波比, 所述天线故障点驻波比 vswr
Figure imgf000012_0001
第二扫描信号, 将第二扫频信号经过耦合处理后通过天线发射, 并通过天线 接收反射信号, 混频器将第一扫频信号和反射信号进行混频处理生成混频信 号, 信号处理器从混频信号中获取天线的故障信息, 从而解决现有技术中天 线故障检测依赖于用户拨打电话时产生的射频信号的问题, 提高了对检测天 线故障的灵活性。 专业人员应该还可以进一步意识到,结合本文中所公开的实施例描述的各 示例的单元及算法步骤, 能够以电子硬件、 计算机软件或者二者的结合来实 现, 为了清楚地说明硬件和软件的可互换性, 在上述说明中已经按照功能一 般性地描述了各示例的组成及步骤。 这些功能究竟以硬件还是软件方式来执 行, 取决于技术方案的特定应用和设计约束条件。 专业技术人员可以对每个 特定的应用来使用不同方法来实现所描述的功能, 但是这种实现不应认为超 出本发明的范围。
以上所述的具体实施方式,对本发明的目的、技术方案和有益效果进行了 进一步详细说明, 所应理解的是, 以上所述仅为本发明的具体实施方式而已, 并不用于限定本发明的保护范围, 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, 均应包含在本发明的保护范围之内。

Claims

权 利 要 求 书
1、 一种天线故障的检测装置, 其特征在于, 所述装置包括:
扫频源, 用于产生第一扫频信号和第二扫频信号;
第一定向耦合器,用于将所述扫频源产生的第二扫频信号生成第一耦合信 号;
第二定向耦合器,用于将所述第一定向耦合器生成的第一耦合信号进行耦 合处理, 生成第二耦合信号, 将所述第二耦合信号通过天线发射, 并对所述 天线接收的所述第二耦合信号的天线反射信号进行耦合处理, 生成天线耦合 反射信号, 所述天线反射信号携带天线最大故障位置的信息;
射频放大器,用于将所述天线耦合反射信号经放大处理后,生成第一反射 信号;
延时器,用于将所述射频放大器生成的第一反射信号进行延时处理,生成 延时第一反射信号;
混频器,用于将所述扫频器产生的第一扫频信号和所述延时器生成的延时 第一反射信号进行混频处理, 生成混频信号;
信号处理器,用于对所述混频器生成的混频信号进行处理,获得所述天线 的故障信息。
2、 根据权利要求 1所述的天线故障的检测装置, 其特征在于, 所述混频 器具有本振(L0 )端口、 射频 (FR )端口和中频 (IF )端口;
所述 L0端口用于接收所述第一扫频信号;
所述 FR端口用于接收所述延时第一反射信号;
所述 IF端口用于输出所述混频信号。
3、 根据权利要求 2所述的天线故障的检测装置, 其特征在于, 所述装置 还包括:
低通滤波器, 用于从所述混频器的 IF端口接收所述混频信号, 并对所述 混频信号进行低通滤波处理, 输出滤波混频信号; 运算放大器, 用于对所述低通滤波器输出的滤波混频信号进行放大处理, 生成放大低通滤波信号;
模数转换器,用于将所述运算放大器生成的放大低通滤波信号从模拟信号 转换为数字信号, 生成数字放大低通滤波信号, 发送给所述信号处理器进行 处理。
4、 根据权利要求 3所述的天线故障的检测装置, 其特征在于, 所述信号 处理器还用于:
接收所述模数转换器生成的数字放大低通滤波信号,对所述数字放大低通 滤波信号进行傅立叶反变换处理, 获取所述天线最大故障位置和所述天线最 大故障位置的峰值电压。
5、 根据权利要求 1或 2所述的天线故障的检测装置, 其特征在于, 所述 信号处理器还用于:
对所述混频信号进行傅立叶反变换处理,获取所述天线最大故障位置和所 述天线最大故障位置的峰值电压。
6、 根据权利要求 4或 5所述的天线故障的检测装置, 其特征在于, 所述 信号处理器还用于:
利用所述天线最大故障位置和所述天线最大故障位置的峰值电压计算天 线 最 大 故 障 测 试 位 置 , 所 述 天 线 最 大 故 障 测 试 位 置
2
Figure imgf000015_0001
其中, 所述; 为所述天线最大故障位置, 所述 #为傅里叶变换点数, 所述 /1表示扫频源开始扫频的起始频率; /2表示扫频源停止扫频的截止频率, 所述 a为所述天线最大故障位置的峰值电压, 所述 ^为扫频点数。
7、 根据权利要求 6所述的天线故障的检测装置, 其特征在于, 所述信号 处理器还用于:
利用所述天线最大故障测试位置 计算天线故障真实位置, 所述天线故 障真实位置 L
Figure imgf000016_0001
其中,所述 。rt、 为天线短路、开路时延等效长度,所述 为介电常数。
8、 根据权利要求 7所述的天线故障的检测装置, 其特征在于, 所述信号 处理器还用于:
利用所述天线故障真实位置 计算所述天线最大故障位置的峰值电压 vpeak的修正值 vpeak , 所述天线最大故障位置的峰值电压 vpeak的修正值
10 20
其中, 所述 α为天线损耗。
9、 根据权利要求 8所述的天线故障的检测装置, 其特征在于, 所述信号 处理器还用于:
利用所述天线最大故障位置的峰值电压 V 的修正值 。计算天线反射系 数 Γ , 所述天线反射系数 Γ = 2 * . Vpeak ·
V
其中, 所述 。 rt、 v 为天线短路、 开路校准电压。
10、根据权利要求 9所述的天线故障的检测装置, 其特征在于, 所述信号 处理器还用于:
利用所述天线反射系数 Γ计算天线故障点驻波比,所述天线故障点驻波比
1 + |Γ|
vswr -—— r 。
1 - |Γ|
11、 一种天线故障的检测方法, 其特征在于, 所述方法包括:
产生第一扫频信号和第二扫频信号;
将所述第二扫频信号耦合后生成第一耦合信号;
将所述第一耦合信号进行耦合处理,生成第二耦合信号,将所述第二耦合 信号通过天线发射, 并通过所述天线接收所述第二耦合信号的天线反射信号, 所述天线反射信号中携带天线最大故障位置的信息;
对所述天线反射信号耦合后, 生成天线耦合反射信号;
对所述天线耦合反射信号进行放大处理, 生成第一反射信号;
对所述第一反射信号进行延时处理, 生成延时第一反射信号;
将所述第一扫频信号和所述延时第一反射信号进行混频处理,生成混频信 号;
对所述混频信号进行处理, 获得所述天线的故障信息。
12、 根据权利要求 11所述的天线故障的检测方法, 其特征在于, 所述将 所述第一扫频信号和所述延时第一反射信号进行混频处理生成混频信号之后 还包括:
对所述混频信号进行低通滤波处理, 输出滤波混频信号;
对所述滤波混频信号进行放大处理, 生成放大低通滤波信号;
将所述放大低通滤波信号从模拟信号转换为数字信号 ,生成数字放大低通 滤波信号。
1 3、 根据权利要求 12所述的天线故障的检测方法, 其特征在于, 所述生 成数字放大低通滤波信号之后还包括:
对所述生成的数字放大低通滤波信号进行傅立叶反变换处理,获取所述天 线最大故障位置和所述天线最大故障位置的峰值电压。
14、 根据权利要求 11所述的天线故障的检测方法, 其特征在于, 所述对 所述混频信号进行处理, 获得所述天线的故障信息具体为:
对所述混频信号进行傅立叶反变换处理,获取所述天线最大故障位置和所 述天线最大故障位置的峰值电压。
15、根据权利要求 1 3或 14所述的天线故障的检测方法, 其特征在于, 所 述获取所述天线最大故障位置和所述天线最大故障位置的峰值电压之后还包 括:
利用所述天线最大故障位置和所述天线最大故障位置的峰值电压计算天 线 最 大 故 障 测 试 位 置 , 所 述 天 线 最 大 故 障 测 试 位 置
2
Figure imgf000018_0001
其中, 所述 为所述天线最大故障位置, 所述 N ;为傅里叶变换点数, 所述 /1表示扫频源开始扫频的起始频率; /2表示扫频源停止扫频的截止频率, 所述 fl为所述天线最大故障位置的峰值电压, 所述 ^为扫频点数。
16、 根据权利要求 15所述的天线故障的检测方法, 其特征在于, 所述利 用天线最大故障位置和所述天线最大故障位置的峰值电压计算所述天线最大 故障测试位置之后还包括:
利用所述天线最大故障测试位置 ^,计算天线故障真实位置, 所述天线故
I + l
障真实位置 L 其中,所述 。rt、 为天线短路、开路时延等效长度,所述 为介电常数。
17、 根据权利要求 16所述的天线故障的检测方法, 其特征在于, 所述利 用所述天线最大故障测试位置 计算天线故障真实位置之后还包括:
利用所述天线故障真实位置 计算所述天线最大故障位置的峰值电压 vpeak的修正值 vpeak , 所述天线最大故障位置的峰值电压 vpeak的修正值
V
v ―
10 20
其中, 所述《为天线损耗。
18、 根据权利要求 17所述的天线故障的检测方法, 其特征在于, 所述利 用所述天线故障真实位置 ^计算所述天线最大故障位置的峰值电压 V 的修 正值 之后还包括:
利用所述天线最大故障位置的峰值电压 V 的修正值 。计算天线反射系 数 Γ, 所述 Γ = 2* ~ ^ ~; 其中, 所述 。 rt、 v 为天线短路、 开路校准电压。
19、 根据权利要求 18所述的天线故障的检测方法, 其特征在于, 所述利 用所述天线最大故障位置的峰值电压 的修正值 Vpeak计算天线反射系数 Γ之 后还包括:
利用所述天线反射系数 Γ计算所述天线故障点驻波比,所述天线故障点驻 i + |r|
反比 raw r 。
1-Γ
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