WO2021169927A1 - Mixer effective supply voltage calculation method - Google Patents
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- WO2021169927A1 WO2021169927A1 PCT/CN2021/077337 CN2021077337W WO2021169927A1 WO 2021169927 A1 WO2021169927 A1 WO 2021169927A1 CN 2021077337 W CN2021077337 W CN 2021077337W WO 2021169927 A1 WO2021169927 A1 WO 2021169927A1
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- the invention relates to the technical field of mixers, in particular to a method for calculating the effective power supply voltage of a mixer
- the power supply voltage of the mixer unit is different. If the same power supply voltage is used, the conversion gain or conversion loss of some mixers will reach Less than the system (for example, network analyzer) requirements. For this reason, mixer manufacturers or network analyzer manufacturers, as well as other end-users who need to use mixers, need to perform related tests for each mixer to determine its effective supply voltage.
- the commonly used technical means are field tests, which adjust the frequency conversion characteristics of the mixer by changing the power supply voltage of the mixer to obtain the power supply voltage value corresponding to the optimal frequency conversion characteristic, or the frequency conversion characteristic value corresponding to the frequency conversion characteristic requirement. Power supply voltage value, this method is only suitable for use in the laboratory or research and development stage, because of the low efficiency and is not suitable for mass production stage.
- the technical problem to be solved by the present invention is to provide a method for calculating the effective power supply voltage of the mixer, which combines the principles of statistics to determine the effective power supply voltage of the mixer.
- the accuracy rate is above 98%, and at the same time, the effective power supply voltage of the mixer is greatly improved.
- the calculation efficiency meets the quality requirements and speed requirements of the mixer in the mass production stage.
- the present invention provides a method for calculating the effective power supply voltage of a mixer, which includes:
- sample data of the sample mixer to create a sample database;
- the sample data includes a mixer supply voltage that can meet the frequency conversion characteristics of the sample mixer;
- the supply voltage V n is stored in the sample database for updating the probability distribution of the supply voltage.
- the frequency conversion characteristics of the sample mixer are adjusted by changing the power supply voltage of the sample mixer, and the supply voltage corresponding to the optimal value of the frequency conversion characteristic is taken as the sample mixer
- the effective supply voltage of the sample mixer is collected; the effective supply voltage of the sample mixer is collected to create the sample database.
- the method further includes adjusting the frequency conversion characteristics of the sample mixer by changing the supply voltage of the sample mixer to obtain the frequency conversion characteristic curve of the sample mixer, and collecting the effective supply voltage of the sample mixer And the frequency conversion characteristic curve to create the sample database pressure.
- it further includes gradually reducing the probability distribution value when searching in the sample database until the supply voltage V n is obtained so that the frequency conversion characteristic of the target mixer meets the requirements.
- the method further includes: drawing a probability distribution curve according to the probability distribution of the supply voltage under the current sample size, and the probability distribution curve is used to speed up the search.
- the frequency conversion characteristics of the mixer further include frequency conversion gain or conversion loss.
- the method further includes changing the supply voltage of the sample mixer through a supply voltage adjustment circuit, and the supply voltage adjustment circuit includes:
- the power supply input terminal is used to connect the power supply terminal
- a power tube the drain of which is connected to the power supply input terminal, and the source of which is connected to the power supply output terminal;
- An error amplifier the inverting input terminal of which is connected to the power supply output terminal, and the output terminal of which is connected to the gate of the power tube;
- the voltage output DAC has its input terminal receiving a voltage regulation signal, and its output terminal is connected to the non-inverting input terminal of the error amplifier, and the voltage output DAC changes its own output voltage according to the voltage regulation signal.
- the power supply voltage adjustment circuit further includes an FPGA chip, and the FPGA chip is connected to the voltage output DAC, which is used to generate the voltage adjustment signal.
- it further includes the FPGA chip generating the voltage regulation signal according to the output performance of the mixer, and the output performance of the mixer includes conversion gain or conversion loss.
- the output voltage adjustment accuracy of the voltage output DAC further includes mV level.
- the method for calculating the effective power supply voltage of the mixer of the present invention combines the statistical principle to determine the effective power supply voltage of the mixer, and the accuracy is above 98%. At the same time, the calculation efficiency of the effective power supply voltage of the mixer is greatly improved to meet the requirements of the mixer. Quality requirements and speed requirements in the mass production stage.
- Fig. 1 is a flowchart of a calculation method in a preferred embodiment of the present invention
- Fig. 2 is a circuit principle diagram of a mixer supply voltage adjusting circuit in a preferred embodiment of the present invention.
- This embodiment discloses a method for calculating the effective supply voltage of a mixer. Referring to FIG. 1, it includes the following steps:
- the frequency conversion characteristics of the aforementioned mixer include conversion gain or conversion loss.
- the mixer has different properties due to the influence of the internal chip manufacturing process. For example, mixers with the same frequency conversion characteristics have different requirements for the power supply voltage. If the same power supply voltage is used to drive The conversion gain or conversion loss of the mixer, part of the mixer does not meet the requirements of the system (for example, a network analyzer).
- the supply voltage V n is stored in the sample database for updating the probability distribution of the supply voltage.
- the frequency conversion characteristics of the sample mixer are adjusted by changing the supply voltage of the sample mixer, and the supply voltage corresponding to the optimal value of the frequency conversion characteristic is taken as the sample mixer.
- the effective power supply voltage of the sample mixer is collected; the effective power supply voltage of the above-mentioned sample mixer is collected to create the above-mentioned sample database.
- step (3) when searching in the sample database, the probability distribution value is gradually reduced until the supply voltage V n is obtained so that the frequency conversion characteristic of the target mixer meets the requirements.
- the power supply voltage corresponding to the search probability distribution of 99% is the power supply voltage V 1 ; Connect the voltage V 1 to the target mixer, measure the frequency conversion characteristics of the target mixer, and determine whether it meets the requirements of the network analyzer.
- the supply voltage V 1 is the effective supply voltage of the target mixer; if If the requirements are not met, the power supply voltage corresponding to the search probability distribution of 90% is the power supply voltage V 2 , the power supply voltage V 2 is connected to the target mixer, the frequency conversion characteristics of the target mixer are measured, and whether it meets the network analyzer In this way, search continuously until the supply voltage V n makes the frequency conversion characteristics of the target mixer meet the requirements. Searching for the supply voltage V n by gradually reducing the probability distribution value can effectively reduce the calculation amount and further increase the calculation speed.
- the frequency conversion characteristic curve of the sample mixer is obtained, and the frequency conversion characteristic curve is used for subsequent calibration of the target mixer to collect the effectiveness of the sample mixer.
- the supply voltage and frequency conversion characteristic curve create the above-mentioned sample database voltage.
- It also includes drawing a probability distribution curve based on the probability distribution of the supply voltage under the current sample size, and the above probability distribution curve is used to speed up the search.
- the power supply voltage of the above-mentioned sample mixer is changed by a power supply voltage regulating circuit.
- the power supply voltage regulating circuit includes a power supply output terminal Out, a power supply input terminal In, a power tube Q, Error amplifier U1 and voltage output DAC U2.
- the power tube Q preferably uses an N-type MOS tube.
- the power supply output terminal Out is used to connect to the mixer, the power supply input terminal In is used to connect to the power supply terminal; the drain of the power tube Q is connected to the power supply input terminal In, and the source is connected to the power supply output terminal Out; the inverse of the error amplifier U1
- the phase input terminal is connected to the power supply output terminal Out, and the output terminal is connected to the gate of the power tube Q; the input terminal of the voltage output DAC U2 receives the voltage regulation signal, and the output terminal is connected to the non-inverting input terminal of the error amplifier U1.
- the voltage output DAC changes its output voltage according to the voltage regulation signal.
- the above-mentioned voltage output DAC is an electronic component of a well-known example, which can change its output voltage (analog signal) according to the input voltage adjustment signal (digital signal), for example, the high-precision voltage output of ADI or Ti DAC.
- the voltage output DAC changes its output voltage according to the voltage regulation signal
- the error amplifier is used to amplify the difference between the power supply voltage connected to the mixer and the output voltage adjusted by the voltage output DAC.
- the amplified signal is realized by controlling the power tube. The purpose of adjusting the power supply voltage of the mixer can effectively improve the voltage adjustment accuracy and the flexibility of the voltage adjustment compared to the traditional method of adjusting the voltage divider resistance.
- the voltage regulation signal is generated by an FPGA chip U3, and the FPGA chip U3 is connected to the voltage output DAC U2.
- the FPGA chip U3 generates the voltage regulation signal according to the output performance of the mixer, and the output performance of the mixer includes but is not limited to conversion gain/loss.
- the voltage regulation signal associated with the output performance of the mixer is connected to the voltage output DAC U2, and then the power supply voltage connected to the mixer is adjusted so that the mixer meets the system's requirements for conversion gain/loss.
- the FPGA chip U3 is programmed and controlled to generate the above-mentioned voltage adjustment signal, so that the output voltage adjustment accuracy of the voltage output DAC U2 can achieve mV level.
- the FPGA chip is an electronic component of a known example, which can generate a digital signal associated with it according to a known variable (for example, the conversion gain/loss of a frequency converter).
- a known variable for example, the conversion gain/loss of a frequency converter.
- FPGA chips with corresponding specifications from Intel, Xilinx, or Lattice are examples of FPGA chips with corresponding specifications from Intel, Xilinx, or Lattice.
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Abstract
Disclosed is a mixer effective supply voltage calculation method, comprising: acquiring sample data of a sample mixer to create a sample database; obtaining a supply voltage probability distribution under the current sample size; searching within the sample database to obtain a supply voltage V1 corresponding to the maximum probability distribution value, connecting the supply voltage V1 to a target mixer of which an effective supply voltage needs to be calculated, and measuring and determining whether a frequency conversion characteristic of the target mixer satisfies a requirement: if yes, the supply voltage V1 is the effective supply voltage of the target mixer, and searching is ended, otherwise, searching is continued till a supply voltage Vn is obtained to enable the frequency conversion characteristic of the target mixer to satisfy the requirement, the supply voltage Vn is the effective supply voltage of the target mixer, and searching is ended. According to the calculation method of the present invention, the effective supply voltage of the mixer is determined in combination with the principle of statistics, the accuracy is 98% or above, the calculation efficiency of the effective supply voltage of the mixer is greatly improved, and the quality requirement and speed requirement of the mixer in a batch production stage are satisfied.
Description
本发明涉及混频器技术领域，具体涉及一种混频器有效供电电压计算方法The invention relates to the technical field of mixers, in particular to a method for calculating the effective power supply voltage of a mixer
混频器电性能测试时，由于其内部芯片(IC)制造工艺的影响，导致混频器单体的供电电压有差异，如果使用相同的供电电压，部分混频器的变频增益或者变频损耗达不到系统(比如，网络分析仪)要求。为此，混频器生产商或者网络分析仪生产商，以及其它需要使用混频器的终端商需要对应每个混频器做相关测试来确定其有效供电电压。目前常用的技术手段是一个一个实地测试，通过改变混频器的供电电压来调节其变频特性，获取最优变频特性所对应的供电电压值，或者满足变频特性要求的变频特性值所对应的的供电电压值，这种方式只适合于实验室或者研发阶段使用，因为效率很低而不适用于批量生产阶段。During the electrical performance test of the mixer, due to the influence of the internal chip (IC) manufacturing process, the power supply voltage of the mixer unit is different. If the same power supply voltage is used, the conversion gain or conversion loss of some mixers will reach Less than the system (for example, network analyzer) requirements. For this reason, mixer manufacturers or network analyzer manufacturers, as well as other end-users who need to use mixers, need to perform related tests for each mixer to determine its effective supply voltage. At present, the commonly used technical means are field tests, which adjust the frequency conversion characteristics of the mixer by changing the power supply voltage of the mixer to obtain the power supply voltage value corresponding to the optimal frequency conversion characteristic, or the frequency conversion characteristic value corresponding to the frequency conversion characteristic requirement. Power supply voltage value, this method is only suitable for use in the laboratory or research and development stage, because of the low efficiency and is not suitable for mass production stage.
发明内容Summary of the invention
本发明要解决的技术问题是提供一种混频器有效供电电压计算方法，结合统计学原理确定混频器的有效供电电压，准确率在98％以上，同时大幅度提高混频器有效供电电压的计算效率，满足混频器批量生产阶段的品质要求和速度要求。The technical problem to be solved by the present invention is to provide a method for calculating the effective power supply voltage of the mixer, which combines the principles of statistics to determine the effective power supply voltage of the mixer. The accuracy rate is above 98%, and at the same time, the effective power supply voltage of the mixer is greatly improved. The calculation efficiency meets the quality requirements and speed requirements of the mixer in the mass production stage.
为了解决上述技术问题，本发明提供了一种混频器有效供电电压计算方法，包括，In order to solve the above technical problems, the present invention provides a method for calculating the effective power supply voltage of a mixer, which includes:
采集样本混频器的样本数据创建样本数据库；所述样本数据包括能够满足样本混频器变频特性要求的混频器供电电压；Collect sample data of the sample mixer to create a sample database; the sample data includes a mixer supply voltage that can meet the frequency conversion characteristics of the sample mixer;
获取所述样本数据库内基于当前样本量下的供电电压概率分布；Acquiring the probability distribution of the supply voltage based on the current sample size in the sample database;
在所述样本数据库内搜索，获取概率分布最大值对应的供电电压V
1，以供电电压V
1为激励接入需要计算有效供电电压的目标混频器，并测量所述目标混频器的变频特性，判断所述目标混频器的变频特性是否满足要求：满足要求时，所述供电电压V
1为所述目标混频器的有效供电电压，结束搜索；不满足要求时，继续搜索，直到获取供电电压V
n使得所述目标混频器的变频特性满足要求，所述供电电压V
n为所述目标混频器的有效供电电压，结束搜索；
Search in the sample database to obtain the supply voltage V 1 corresponding to the maximum value of the probability distribution, use the supply voltage V 1 as the excitation to access the target mixer that needs to calculate the effective supply voltage, and measure the frequency conversion of the target mixer Characteristics, to determine whether the frequency conversion characteristics of the target mixer meet the requirements: when the requirements are met, the supply voltage V 1 is the effective supply voltage of the target mixer, and the search ends; when the requirements are not met, the search continues until Obtaining the supply voltage V n so that the frequency conversion characteristics of the target mixer meet the requirements, the supply voltage V n is the effective supply voltage of the target mixer, and the search ends;
其中，所述供电电压V
n存入所述样本数据库内用以更新所述供电电压概率分布。
Wherein, the supply voltage V n is stored in the sample database for updating the probability distribution of the supply voltage.
本发明一个较佳实施例中，进一步包括采集样本数据时，通过改变所述样本混频器的供电电压调节其变频特性，取变频特性最优值所对应的供电电压为所述样本混频器的有效供电电压；采集所述样本混频器的有效供电电压创建所述样品数据库。In a preferred embodiment of the present invention, it further includes that when sample data is collected, the frequency conversion characteristics of the sample mixer are adjusted by changing the power supply voltage of the sample mixer, and the supply voltage corresponding to the optimal value of the frequency conversion characteristic is taken as the sample mixer The effective supply voltage of the sample mixer is collected; the effective supply voltage of the sample mixer is collected to create the sample database.
本发明一个较佳实施例中，进一步包括通过改变所述样本混频器的供电电压调节其变频特性，获得所述样本混频器的变频特性曲线，采集所述样本混频器的有效供电电压和变频特性曲线创建所述样品数据库压。In a preferred embodiment of the present invention, the method further includes adjusting the frequency conversion characteristics of the sample mixer by changing the supply voltage of the sample mixer to obtain the frequency conversion characteristic curve of the sample mixer, and collecting the effective supply voltage of the sample mixer And the frequency conversion characteristic curve to create the sample database pressure.
本发明一个较佳实施例中，进一步包括在所述样本数据库内搜索时，逐渐减小概率分布值，直到获取供电电压V
n使得所述目标混频器的变频特性满足要求。
In a preferred embodiment of the present invention, it further includes gradually reducing the probability distribution value when searching in the sample database until the supply voltage V n is obtained so that the frequency conversion characteristic of the target mixer meets the requirements.
本发明一个较佳实施例中，进一步包括还包括，根据当前样本量下的供电电压概率分布绘制概率分布曲线，所述概率分布曲线用以加快搜索速度。In a preferred embodiment of the present invention, the method further includes: drawing a probability distribution curve according to the probability distribution of the supply voltage under the current sample size, and the probability distribution curve is used to speed up the search.
本发明一个较佳实施例中，进一步包括所述混频器的变频特性包括变频增 益或者变频损耗。In a preferred embodiment of the present invention, the frequency conversion characteristics of the mixer further include frequency conversion gain or conversion loss.
本发明一个较佳实施例中，进一步包括通过供电电压调节电路改变所述样本混频器的供电电压，所述供电电压调节电路包括，In a preferred embodiment of the present invention, the method further includes changing the supply voltage of the sample mixer through a supply voltage adjustment circuit, and the supply voltage adjustment circuit includes:
供电输出端，用以连接混频器Power output terminal for connecting mixer
供电输入端，用以连接供电端；The power supply input terminal is used to connect the power supply terminal;
功率管，其漏极连接供电输入端，源极连接供电输出端；A power tube, the drain of which is connected to the power supply input terminal, and the source of which is connected to the power supply output terminal;
误差放大器，其反相输入端连接所述供电输出端，其输出端连接所述功率管的门极；An error amplifier, the inverting input terminal of which is connected to the power supply output terminal, and the output terminal of which is connected to the gate of the power tube;
电压输出DAC，其输入端接收电压调节信号，其输出端连接所述误差放大器的正相输入端，所述电压输出DAC根据电压调节信号改变自身的输出电压。The voltage output DAC has its input terminal receiving a voltage regulation signal, and its output terminal is connected to the non-inverting input terminal of the error amplifier, and the voltage output DAC changes its own output voltage according to the voltage regulation signal.
本发明一个较佳实施例中，进一步包括所述供电电压调节电路还包括FPGA芯片，所述FPGA芯片连接所述电压输出DAC，其用以产生所述电压调节信号。In a preferred embodiment of the present invention, the power supply voltage adjustment circuit further includes an FPGA chip, and the FPGA chip is connected to the voltage output DAC, which is used to generate the voltage adjustment signal.
本发明一个较佳实施例中，进一步包括所述FPGA芯片根据混频器的输出性能产生所述电压调节信号，所述混频器的输出性能包括变频增益或者变频损耗。In a preferred embodiment of the present invention, it further includes the FPGA chip generating the voltage regulation signal according to the output performance of the mixer, and the output performance of the mixer includes conversion gain or conversion loss.
本发明一个较佳实施例中，进一步包括所述电压输出DAC的输出电压调节精度为mV级。In a preferred embodiment of the present invention, the output voltage adjustment accuracy of the voltage output DAC further includes mV level.
本发明的有益效果：The beneficial effects of the present invention:
本发明的混频器有效供电电压计算方法，结合统计学原理确定混频器的有效供电电压，准确率在98％以上，同时大幅度提高混频器有效供电电压的计算效率，满足混频器批量生产阶段的品质要求和速度要求。The method for calculating the effective power supply voltage of the mixer of the present invention combines the statistical principle to determine the effective power supply voltage of the mixer, and the accuracy is above 98%. At the same time, the calculation efficiency of the effective power supply voltage of the mixer is greatly improved to meet the requirements of the mixer. Quality requirements and speed requirements in the mass production stage.
图1是本发明优选实施例中计算方法的流程图；Fig. 1 is a flowchart of a calculation method in a preferred embodiment of the present invention;
图2是本发明优选实施例中混频器供电电压调节电路的电路原理图。Fig. 2 is a circuit principle diagram of a mixer supply voltage adjusting circuit in a preferred embodiment of the present invention.
下面结合附图和具体实施例对本发明作进一步说明，以使本领域的技术人员可以更好地理解本发明并能予以实施，但所举实施例不作为对本发明的限定。The present invention will be further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand and implement the present invention, but the examples cited are not intended to limit the present invention.
实施例Example
本实施例公开一种混频器有效供电电压计算方法，参照图1所示，其包括以下步骤，This embodiment discloses a method for calculating the effective supply voltage of a mixer. Referring to FIG. 1, it includes the following steps:
(1)采集样本混频器的样本数据创建样本数据库；上述样本数据包括能够满足上述样本混频器变频特性要求的供电电压。其中，上述混频器的变频特性包括变频增益或者变频损耗。此处需要说明的有：混频器由于内部芯片制造工艺的影响使得混频器自身属性有差异，比如，具有相同变频特性的混频器对供电电压的要求不同，如果使用相同的供电电压驱动混频器，部分混频器的变频增益或者变频损耗达不到系统(比如，网络分析仪)要求。基于此，采集能够满足样品混频器变频特性要求的供电电压，使用一定样本量(比如，200个、500个、1000个甚至更多)的混频器作为样本混频器，采集每个样本混频器满足变频特性要求的供电电压创建样本数据库。(1) Collect sample data of the sample mixer to create a sample database; the sample data includes the supply voltage that can meet the frequency conversion characteristics of the sample mixer. Wherein, the frequency conversion characteristics of the aforementioned mixer include conversion gain or conversion loss. What needs to be explained here: the mixer has different properties due to the influence of the internal chip manufacturing process. For example, mixers with the same frequency conversion characteristics have different requirements for the power supply voltage. If the same power supply voltage is used to drive The conversion gain or conversion loss of the mixer, part of the mixer does not meet the requirements of the system (for example, a network analyzer). Based on this, collect the supply voltage that can meet the requirements of the frequency conversion characteristics of the sample mixer, and use a mixer with a certain sample size (for example, 200, 500, 1000, or more) as the sample mixer to collect each sample The mixer creates a sample database for the supply voltage that meets the frequency conversion characteristics.
(2)获取上述样本数据库内基于当前样本量下的供电电压概率分布，即满足变频特性要求的供电电压在所有样本数据中分布的概率。(2) Obtain the probability distribution of the power supply voltage based on the current sample size in the above-mentioned sample database, that is, the probability of the power supply voltage that meets the requirements of the frequency conversion characteristic in all the sample data.
(3)在上述样本数据库内搜索，获取概率分布最大值对应的供电电压V
1，以供电电压V
1为激励接入需要计算有效供电电压的目标混频器，并测量上述目标混频器的变频特性，判断上述目标混频器的变频特性是否满足要求：满足要 求时，上述供电电压V
1为上述目标混频器的有效供电电压，结束搜索；不满足要求时，继续搜索，直到获取供电电压V
n使得上述目标混频器的变频特性满足要求，上述供电电压V
n为上述目标混频器的有效供电电压，结束搜索；
(3) Search in the above-mentioned sample database to obtain the supply voltage V 1 corresponding to the maximum value of the probability distribution, use the supply voltage V 1 as the excitation to access the target mixer that needs to calculate the effective supply voltage, and measure the above-mentioned target mixer Frequency conversion characteristics, to determine whether the frequency conversion characteristics of the target mixer meet the requirements: when the requirements are met, the supply voltage V 1 is the effective supply voltage of the target mixer, and the search ends; if the requirements are not met, the search continues until the power supply is obtained The voltage V n makes the frequency conversion characteristics of the target mixer meet the requirements, and the supply voltage V n is the effective supply voltage of the target mixer, and the search ends;
其中，上述供电电压V
n存入上述样本数据库内用以更新上述供电电压概率分布。
Wherein, the supply voltage V n is stored in the sample database for updating the probability distribution of the supply voltage.
作为本实施例的进一步技术方案，步骤(1)中采集样本数据时，通过改变上述样本混频器的供电电压调节其变频特性，取变频特性最优值所对应的供电电压为上述样本混频器的有效供电电压；采集上述样本混频器的有效供电电压创建上述样品数据库。使用样品混频器最优变频特性对应的供电电压作为样本数据，能够有效提高基于统计学原理计算目标混频器有效供电电压的准确度。As a further technical solution of this embodiment, when collecting sample data in step (1), the frequency conversion characteristics of the sample mixer are adjusted by changing the supply voltage of the sample mixer, and the supply voltage corresponding to the optimal value of the frequency conversion characteristic is taken as the sample mixer. The effective power supply voltage of the sample mixer is collected; the effective power supply voltage of the above-mentioned sample mixer is collected to create the above-mentioned sample database. Using the power supply voltage corresponding to the optimal frequency conversion characteristics of the sample mixer as the sample data can effectively improve the accuracy of calculating the effective power supply voltage of the target mixer based on statistical principles.
作为本实施例的进一步技术方案，步骤(3)中，在上述样本数据库内搜索时，逐渐减小概率分布值，直到获取供电电压V
n使得上述目标混频器的变频特性满足要求。以概率分布分别为99％(概率分布最大值)、90％、86％、80％、70％、60％为例，搜索概率分布为99％所对应的供电电压为供电电压V
1；将供电电压V
1接入目标混频器，测量目标混频器的变频特性，并判断其是否满足网络分析仪的要求，如果满足要求，则供电电压V
1为目标混频器的有效供电电压；如果不满足要求，搜索概率分布为90％所对应的供电电压为供电电压V
2，将供电电压V
2接入目标混频器，测量目标混频器的变频特性，并判断其是否满足网络分析仪的要求，以此不断搜索，直到取供电电压V
n使得上述目标混频器的变频特性满足要求。逐渐减小概率分布值的方式搜索供电电压V
n，能够有效减小计算量，进一步提高计算速度。
As a further technical solution of this embodiment, in step (3), when searching in the sample database, the probability distribution value is gradually reduced until the supply voltage V n is obtained so that the frequency conversion characteristic of the target mixer meets the requirements. Taking the probability distributions of 99% (the maximum value of the probability distribution), 90%, 86%, 80%, 70%, and 60% as examples, the power supply voltage corresponding to the search probability distribution of 99% is the power supply voltage V 1 ; Connect the voltage V 1 to the target mixer, measure the frequency conversion characteristics of the target mixer, and determine whether it meets the requirements of the network analyzer. If it meets the requirements, the supply voltage V 1 is the effective supply voltage of the target mixer; if If the requirements are not met, the power supply voltage corresponding to the search probability distribution of 90% is the power supply voltage V 2 , the power supply voltage V 2 is connected to the target mixer, the frequency conversion characteristics of the target mixer are measured, and whether it meets the network analyzer In this way, search continuously until the supply voltage V n makes the frequency conversion characteristics of the target mixer meet the requirements. Searching for the supply voltage V n by gradually reducing the probability distribution value can effectively reduce the calculation amount and further increase the calculation speed.
进一步的，通过改变上述样本混频器的供电电压调节其变频特性，获得上述样本混频器的变频特性曲线，变频特性曲线用以后续校准目标混频器使用，采集上述样本混频器的有效供电电压和变频特性曲线创建上述样品数据库压。Further, by changing the power supply voltage of the sample mixer to adjust its frequency conversion characteristics, the frequency conversion characteristic curve of the sample mixer is obtained, and the frequency conversion characteristic curve is used for subsequent calibration of the target mixer to collect the effectiveness of the sample mixer. The supply voltage and frequency conversion characteristic curve create the above-mentioned sample database voltage.
还包括，根据当前样本量下的供电电压概率分布绘制概率分布曲线，上述概率分布曲线用以加快搜索速度。It also includes drawing a probability distribution curve based on the probability distribution of the supply voltage under the current sample size, and the above probability distribution curve is used to speed up the search.
作为本实施例的进一步技术方案，通过供电电压调节电路改变上述样本混频器的供电电压，参照图2所示，该供电电压调节电路包括供电输出端Out、供电输入端In、功率管Q、误差放大器U1和电压输出DAC U2。其中，功率管Q优选使用N型MOS管。上述供电输出端Out用以连接混频器，上述供电输入端In用以连接供电端；上述功率管Q的漏极连接供电输入端In，源极连接供电输出端Out；上述误差放大器U1的反相输入端连接上述供电输出端Out，其输出端连接上述功率管Q的门极；上述电压输出DAC U2的输入端接收电压调节信号，其输出端连接上述误差放大器U1的正相输入端，上述电压输出DAC根据电压调节信号改变自身的输出电压。As a further technical solution of this embodiment, the power supply voltage of the above-mentioned sample mixer is changed by a power supply voltage regulating circuit. As shown in FIG. 2, the power supply voltage regulating circuit includes a power supply output terminal Out, a power supply input terminal In, a power tube Q, Error amplifier U1 and voltage output DAC U2. Among them, the power tube Q preferably uses an N-type MOS tube. The power supply output terminal Out is used to connect to the mixer, the power supply input terminal In is used to connect to the power supply terminal; the drain of the power tube Q is connected to the power supply input terminal In, and the source is connected to the power supply output terminal Out; the inverse of the error amplifier U1 The phase input terminal is connected to the power supply output terminal Out, and the output terminal is connected to the gate of the power tube Q; the input terminal of the voltage output DAC U2 receives the voltage regulation signal, and the output terminal is connected to the non-inverting input terminal of the error amplifier U1. The voltage output DAC changes its output voltage according to the voltage regulation signal.
本实施例技术方案中，上述电压输出DAC为公知示例的电子元件，其能够根据输入的电压调节信号(数字信号)改变自身的输出电压(模拟信号)，如，ADI或Ti的高精度电压输出DAC。In the technical solution of this embodiment, the above-mentioned voltage output DAC is an electronic component of a well-known example, which can change its output voltage (analog signal) according to the input voltage adjustment signal (digital signal), for example, the high-precision voltage output of ADI or Ti DAC.
以上，电压输出DAC根据电压调节信号改变自身的输出电压，使用误差放大器对接入混频器的供电电压和电压输出DAC调节后的输出电压的差值进行放大，该放大信号通过控制功率管实现调节混频器供电电压的目的，相较于传统通过调节分压电阻的方式能够有效提高电压调节精度，以及提高电压调节的灵活性。Above, the voltage output DAC changes its output voltage according to the voltage regulation signal, and the error amplifier is used to amplify the difference between the power supply voltage connected to the mixer and the output voltage adjusted by the voltage output DAC. The amplified signal is realized by controlling the power tube. The purpose of adjusting the power supply voltage of the mixer can effectively improve the voltage adjustment accuracy and the flexibility of the voltage adjustment compared to the traditional method of adjusting the voltage divider resistance.
其中，上述电压调节信号由FPGA芯片U3产生，该FPGA芯片U3连接上述电压输出DAC U2。上述FPGA芯片U3根据混频器的输出性能产生上述电压调节信号，上述混频器的输出性能包括但不限于变频增益/损耗。与混频器输出性能关联的电压调节信号接入电压输出DAC U2，进而调节接入混频器的供电电压，使得混频器满足系统对变频增益/损耗的要求。Wherein, the voltage regulation signal is generated by an FPGA chip U3, and the FPGA chip U3 is connected to the voltage output DAC U2. The FPGA chip U3 generates the voltage regulation signal according to the output performance of the mixer, and the output performance of the mixer includes but is not limited to conversion gain/loss. The voltage regulation signal associated with the output performance of the mixer is connected to the voltage output DAC U2, and then the power supply voltage connected to the mixer is adjusted so that the mixer meets the system's requirements for conversion gain/loss.
FPGA芯片U3编程控制产生上述电压调节信号，使得电压输出DAC U2的输出电压调节精度可以做到mV级。The FPGA chip U3 is programmed and controlled to generate the above-mentioned voltage adjustment signal, so that the output voltage adjustment accuracy of the voltage output DAC U2 can achieve mV level.
以上，FPGA芯片为公知示例的电子元件，其能够根据已知变量(比如，变频器的变频增益/损耗)产生与之关联的数字信号。如，Intel公司、Xilinx公司或Lattice公司的相应规格的FPGA芯片。Above, the FPGA chip is an electronic component of a known example, which can generate a digital signal associated with it according to a known variable (for example, the conversion gain/loss of a frequency converter). For example, FPGA chips with corresponding specifications from Intel, Xilinx, or Lattice.
以上所述实施例仅是为充分说明本发明而所举的较佳的实施例，本发明的保护范围不限于此。本技术领域的技术人员在本发明基础上所作的等同替代或变换，均在本发明的保护范围之内。本发明的保护范围以权利要求书为准。The above-mentioned embodiments are only preferred embodiments for fully explaining the present invention, and the protection scope of the present invention is not limited thereto. Equivalent substitutions or alterations made by those skilled in the art on the basis of the present invention are all within the protection scope of the present invention. The protection scope of the present invention is subject to the claims.
Claims (10)
- 一种混频器有效供电电压计算方法，其特征在于：包括，A method for calculating the effective power supply voltage of a mixer, which is characterized in that it includes:采集样本混频器的样本数据创建样本数据库；所述样本数据包括能够满足样本混频器变频特性要求的混频器供电电压；Collect sample data of the sample mixer to create a sample database; the sample data includes a mixer supply voltage that can meet the frequency conversion characteristics of the sample mixer;获取所述样本数据库内基于当前样本量下的供电电压概率分布；Acquiring the probability distribution of the supply voltage based on the current sample size in the sample database;在所述样本数据库内搜索，获取概率分布最大值对应的供电电压V 1，以供电电压V 1为激励接入需要计算有效供电电压的目标混频器，并测量所述目标混频器的变频特性，判断所述目标混频器的变频特性是否满足要求：满足要求时，所述供电电压V 1为所述目标混频器的有效供电电压，结束搜索；不满足要求时，继续搜索，直到获取供电电压V n使得所述目标混频器的变频特性满足要求，所述供电电压V n为所述目标混频器的有效供电电压，结束搜索； Search in the sample database to obtain the supply voltage V 1 corresponding to the maximum value of the probability distribution, use the supply voltage V 1 as the excitation to access the target mixer that needs to calculate the effective supply voltage, and measure the frequency conversion of the target mixer Characteristics, to determine whether the frequency conversion characteristics of the target mixer meet the requirements: when the requirements are met, the supply voltage V 1 is the effective supply voltage of the target mixer, and the search ends; when the requirements are not met, the search continues until Obtaining the supply voltage V n so that the frequency conversion characteristics of the target mixer meet the requirements, the supply voltage V n is the effective supply voltage of the target mixer, and the search ends;其中，所述供电电压V n存入所述样本数据库内用以更新所述供电电压概率分布。 Wherein, the supply voltage V n is stored in the sample database for updating the probability distribution of the supply voltage.
- 如权利要求1所述的混频器有效供电电压计算方法，其特征在于：采集样本数据时，通过改变所述样本混频器的供电电压调节其变频特性，取变频特性最优值所对应的供电电压为所述样本混频器的有效供电电压；采集所述样本混频器的有效供电电压创建所述样品数据库。The method for calculating the effective power supply voltage of a mixer according to claim 1, wherein when sample data is collected, the frequency conversion characteristics of the sample mixer are adjusted by changing the power supply voltage of the sample mixer, and the optimal value of the frequency conversion characteristics is selected. The supply voltage is the effective supply voltage of the sample mixer; the effective supply voltage of the sample mixer is collected to create the sample database.
- 如权利要求2所述的混频器有效供电电压计算方法，其特征在于：通过改变所述样本混频器的供电电压调节其变频特性，获得所述样本混频器的变频特性曲线，采集所述样本混频器的有效供电电压和变频特性曲线创建所述样品数据库压。The method for calculating the effective power supply voltage of the mixer according to claim 2, wherein the frequency conversion characteristic of the sample mixer is adjusted by changing the power supply voltage of the sample mixer, and the frequency conversion characteristic curve of the sample mixer is obtained, and all the samples are collected. The effective supply voltage and the frequency conversion characteristic curve of the sample mixer create the sample database pressure.
- 如权利要求1或2所述的混频器有效供电电压计算方法，其特征在于：在所述样本数据库内搜索时，逐渐减小概率分布值，直到获取供电电压V n使得 所述目标混频器的变频特性满足要求。 The method for calculating the effective supply voltage of a mixer according to claim 1 or 2, characterized in that: when searching in the sample database, the probability distribution value is gradually reduced until the supply voltage V n is obtained so that the target mixing The frequency conversion characteristics of the converter meet the requirements.
- 如权利要求4所述的混频器有效供电电压计算方法，其特征在于：还包括，根据当前样本量下的供电电压概率分布绘制概率分布曲线，所述概率分布曲线用以加快搜索速度。The method for calculating the effective supply voltage of the mixer according to claim 4, further comprising: drawing a probability distribution curve according to the probability distribution of the supply voltage under the current sample size, and the probability distribution curve is used to speed up the search.
- 如权利要求1或2所述的混频器有效供电电压计算方法，其特征在于：所述混频器的变频特性包括变频增益或者变频损耗。The method for calculating the effective supply voltage of a mixer according to claim 1 or 2, wherein the frequency conversion characteristics of the mixer include conversion gain or conversion loss.
- 如权利要求2所述的混频器有效供电电压计算方法，其特征在于：通过供电电压调节电路改变所述样本混频器的供电电压，所述供电电压调节电路包括，The method for calculating the effective supply voltage of a mixer according to claim 2, wherein the supply voltage of the sample mixer is changed by a supply voltage adjustment circuit, and the supply voltage adjustment circuit comprises:供电输出端，用以连接混频器Power output terminal for connecting mixer供电输入端，用以连接供电端；The power supply input terminal is used to connect the power supply terminal;功率管，其漏极连接供电输入端，源极连接供电输出端；A power tube, the drain of which is connected to the power supply input terminal, and the source of which is connected to the power supply output terminal;误差放大器，其反相输入端连接所述供电输出端，其输出端连接所述功率管的门极；An error amplifier, the inverting input terminal of which is connected to the power supply output terminal, and the output terminal of which is connected to the gate of the power tube;电压输出DAC，其输入端接收电压调节信号，其输出端连接所述误差放大器的正相输入端，所述电压输出DAC根据电压调节信号改变自身的输出电压。The voltage output DAC has its input terminal receiving a voltage regulation signal, and its output terminal is connected to the non-inverting input terminal of the error amplifier, and the voltage output DAC changes its own output voltage according to the voltage regulation signal.
- 如权利要求7所述的混频器有效供电电压计算方法，其特征在于：所述供电电压调节电路还包括FPGA芯片，所述FPGA芯片连接所述电压输出DAC，其用以产生所述电压调节信号。7. The method for calculating the effective power supply voltage of a mixer according to claim 7, wherein the power supply voltage adjustment circuit further comprises an FPGA chip, and the FPGA chip is connected to the voltage output DAC for generating the voltage adjustment Signal.
- 如权利要求8所述的混频器有效供电电压计算方法，其特征在于：所述FPGA芯片根据混频器的输出性能产生所述电压调节信号，所述混频器的输出性能包括变频增益或者变频损耗。8. The method for calculating the effective supply voltage of a mixer according to claim 8, wherein the FPGA chip generates the voltage regulation signal according to the output performance of the mixer, and the output performance of the mixer includes a frequency conversion gain or Conversion loss.
- 如权利要求7所述的混频器有效供电电压计算方法，其特征在于：所述电压输出DAC的输出电压调节精度为mV级。8. The method for calculating the effective supply voltage of the mixer according to claim 7, wherein the output voltage adjustment accuracy of the voltage output DAC is mV level.
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