CN204103932U - Phase amplitude-matched multi-channel radio frequency simulator - Google Patents
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Abstract
本实用新型公开了一种幅相一致多通道射频模拟器，包括依次电连接的接收单元、下变混频滤波单元、信号处理单元、幅度均衡器、上变混频滤波单元和自动增益控制单元；接收单元包括依次电连接的限幅器、预选滤波器、低噪声放大器和程控衰减器；下变混频滤波单元包括混频器、连接于混频器本振输入端的本振单元、匹配隔离器及中频滤波器；幅度均衡器包括主传输线及并联在主传输线上的谐振器；上变混频滤波单元包括中频滤波器、混频器、连接于混频器本振输入端的本振单元、匹配隔离器及射频滤波器；自动增益控制单元包括依次电连接的低噪声放大器、程控衰减器及大动态放大器。本实用新型提高了射频模拟器多通道之间幅相平坦度及一致性。
The utility model discloses a multi-channel radio frequency simulator with consistent amplitude and phase, which comprises a receiving unit, a down-conversion mixing filter unit, a signal processing unit, an amplitude equalizer, an up-conversion mixing filter unit and an automatic gain control unit electrically connected in sequence ; The receiving unit includes a limiter, a preselection filter, a low-noise amplifier and a program-controlled attenuator that are electrically connected in sequence; and an intermediate frequency filter; the amplitude equalizer includes a main transmission line and a resonator connected in parallel on the main transmission line; the up-conversion mixing filter unit includes an intermediate frequency filter, a mixer, a local oscillator unit connected to the mixer local oscillator input, A matching isolator and a radio frequency filter; the automatic gain control unit includes a low noise amplifier, a program-controlled attenuator and a large dynamic amplifier which are electrically connected in sequence. The utility model improves the amplitude and phase flatness and consistency among multiple channels of the radio frequency simulator.
Description
技术领域 technical field
本实用新型属于通信、雷达、雷达模拟器、电子对抗技术领域，具体涉及一种幅相一致多通道射频模拟器。 The utility model belongs to the technical fields of communication, radar, radar simulator and electronic countermeasure, and in particular relates to a multi-channel radio frequency simulator with consistent amplitude and phase.
背景技术 Background technique
幅相一致多通道射频模拟器可用于完成被试雷达系统的设备调试、功能检查、性能评估及模拟训练等任务，在通信、雷达、电子对抗等方面有着广泛的应用前景。目前，在雷达试验、电子对抗等应用中对多通道射频模拟器的幅相一致性要求越来越高，杂散、幅度一致性、相位一致性是衡量多通道射频模拟器性能的关键指标，而对幅相一致性方面的研究文献却很少，只有对低频窄带宽的上变频器幅相一致性作了简单的介绍，而对于频率高达吉赫兹甚至几十吉赫兹的宽带射频模拟器来说，要达到良好的幅相一致性更为困难，因此本实用新型从实际应用中设计了适于9.37GHz±200MHz高频率宽带信号的幅相一致性良好的射频模拟器。 The multi-channel RF simulator with consistent amplitude and phase can be used to complete the equipment debugging, function inspection, performance evaluation and simulation training of the radar system under test, and has broad application prospects in communication, radar, electronic countermeasures, etc. At present, in radar tests, electronic countermeasures and other applications, the requirements for the amplitude and phase consistency of multi-channel RF simulators are getting higher and higher. Spurs, amplitude consistency, and phase consistency are key indicators to measure the performance of multi-channel RF simulators. However, there are very few research literatures on amplitude-phase consistency, only a brief introduction to low-frequency narrow-bandwidth up-converter amplitude-phase consistency, and for broadband RF simulators with frequencies as high as gigahertz or even tens of gigahertz. It is said that it is more difficult to achieve good amplitude-phase consistency, so the utility model designs a radio frequency simulator with good amplitude-phase consistency suitable for 9.37GHz±200MHz high-frequency broadband signals from practical applications.
实用新型内容 Utility model content
为解决现有技术的不足，本实用新型的目的在于提供一种幅相一致多通道射频模拟器，解决了高频宽带信号射频模拟器多通道之间的幅相平坦度及一致性较差的问题。 In order to solve the deficiencies of the prior art, the purpose of this utility model is to provide a multi-channel radio frequency simulator with consistent amplitude and phase, which solves the problem of poor amplitude and phase flatness and consistency between multiple channels of high-frequency broadband signal radio frequency simulators. question.
为了实现上述目标，本实用新型采用如下的技术方案：幅相一致多通道射频模拟器，其特征在于，包括依次电连接的接收单元、下变混频滤波单元、信号处理单元、幅度均衡器、上变混频滤波单元和自动增益控制单元。 In order to achieve the above-mentioned goals, the utility model adopts the following technical scheme: a multi-channel radio frequency simulator with consistent amplitude and phase, which is characterized in that it includes a receiving unit electrically connected in sequence, a down-conversion mixing filter unit, a signal processing unit, an amplitude equalizer, An up-conversion mixing and filtering unit and an automatic gain control unit. the
前述的幅相一致多通道射频模拟器，其特征是，所述接收单元包括依次电连接的限幅器、预选滤波器、低噪声放大器和程控衰减器；所述低噪声放大器采用Hittite公司的HMC460放大器芯片。 Aforesaid multi-channel RF simulator with consistent amplitude and phase is characterized in that the receiving unit includes a limiter, a preselection filter, a low-noise amplifier and a program-controlled attenuator electrically connected in sequence; the low-noise amplifier adopts HMC460 of Hittite Company amplifier chip.
前述的幅相一致多通道射频模拟器，其特征是，所述下变混频滤波单元包括混频器、连接于所述混频器本振输入端的本振单元、匹配隔离器及中频滤波器；所述混频器的射频输入端和中频输出端分别连接所述匹配隔离器，所述中频滤波器连接于所述混频器的中频输出端的匹配隔离器之后；所述本振单元包括依次电连接的锁相频率源、四功分器和功率放大器；所述功率放大器连接在所述混频器的本振输入端。 The aforementioned multi-channel radio frequency simulator with consistent amplitude and phase is characterized in that the down-conversion mixing and filtering unit includes a mixer, a local oscillator unit connected to the local oscillator input of the mixer, a matching isolator and an intermediate frequency filter The radio frequency input end and the intermediate frequency output end of the mixer are respectively connected to the matching isolator, and the intermediate frequency filter is connected after the matching isolator of the intermediate frequency output end of the mixer; the local oscillator unit includes sequentially A phase-locked frequency source, a four-power splitter and a power amplifier are electrically connected; the power amplifier is connected to the local oscillator input end of the mixer.
前述的幅相一致多通道射频模拟器，其特征是，所述匹配隔离器采用3dB衰减器作阻抗匹配；所述中频滤波器为250MHz±200MHz的LC带通滤波器；所述混频器采用MC54MS-14芯片。 Aforesaid amplitude-phase consistent multi-channel radio frequency simulator is characterized in that, described matching isolator adopts 3dB attenuator to make impedance matching; Described intermediate frequency filter is the LC band-pass filter of 250MHz ± 200MHz; Described mixer adopts MC54MS-14 chip.
前述的幅相一致多通道射频模拟器，其特征是，所述幅度均衡器包括主传输线及并联在主传输线上的谐振器；所述谐振器为开路枝节谐振器，所述开路枝节谐振器包括电阻和与电阻串联的电感、电容。 The aforementioned multi-channel radio frequency simulator with consistent amplitude and phase is characterized in that the amplitude equalizer includes a main transmission line and a resonator connected in parallel on the main transmission line; the resonator is an open-circuit stub resonator, and the open-circuit stub resonator includes A resistor and an inductor and capacitor connected in series with the resistor.
前述的幅相一致多通道射频模拟器，其特征是，所述上变混频滤波单元包括中频滤波器、混频器、连接于所述混频器本振输入端的本振单元、匹配隔离器及射频滤波器；所述中频滤波器置于最前端连接在幅度均衡器之后；所述混频器的中频输入端和射频输出端分别连接匹配隔离器；所述本振单元包括依次电连接的锁相频率源、四功分器和功率放大器；所述功率放大器连接在所述混频器的本振输入端；所述射频滤波器连接于所述混频器输出端的匹配隔离器之后，采用交指状腔体滤波器。 The aforementioned multi-channel radio frequency simulator with consistent amplitude and phase is characterized in that the up-conversion mixing and filtering unit includes an intermediate frequency filter, a mixer, a local oscillator unit connected to the local oscillator input of the mixer, and a matching isolator and a radio frequency filter; the intermediate frequency filter is placed at the forefront and connected after the amplitude equalizer; the intermediate frequency input terminal and the radio frequency output terminal of the mixer are respectively connected to a matching isolator; the local oscillator unit includes sequentially electrically connected A phase-locked frequency source, a four-power splitter and a power amplifier; the power amplifier is connected to the local oscillator input of the mixer; the radio frequency filter is connected to the output of the mixer after the matching isolator, using Interdigitated cavity filter.
前述的幅相一致多通道射频模拟器，其特征是，所述自动增益控制单元包括依次电连接的低噪声放大器、程控衰减器及大动态放大器；所述程控衰减器采用吸收式的程控衰减器；所述大动态放大器采用Hittite公司的HMC465放大器芯片。 The aforementioned multi-channel RF simulator with consistent amplitude and phase is characterized in that the automatic gain control unit includes a low-noise amplifier, a program-controlled attenuator and a large dynamic amplifier electrically connected in sequence; the program-controlled attenuator adopts an absorbing program-controlled attenuator ; The large dynamic amplifier adopts the HMC465 amplifier chip of Hittite Company.
前述的幅相一致多通道射频模拟器，其特征是，所述射频滤波器为9.37GHz±200MHz的腔体滤波器；所述中频滤波器为250MHz±200MHz的LC带通滤波器 The aforementioned multi-channel radio frequency simulator with consistent amplitude and phase is characterized in that the radio frequency filter is a cavity filter of 9.37GHz±200MHz; the intermediate frequency filter is an LC bandpass filter of 250MHz±200MHz
本实用新型所达到的有益效果：通过依次电连接的接收单元、下变混频滤波单元、信号处理单元、幅度均衡器、上变混频滤波单元及自动增益控制单元，使各通道调试点完全一致；其中幅度均衡器可以有效的补偿整个系统由于传输电缆、变频器、放大器等器件带来的幅频不一致性，特别是由于微波信号传输和放大过程中损耗随着频率增加而加大的现象及数字信号处理AD、DA变换过程中产生的幅度不平坦度；自动增益控制单元将上变频滤波单元输出的射频信号进行功率放大及幅度精准输出。本实用新型提高了射频模拟器多通道之间幅相平坦度及一致性。 The beneficial effects achieved by the utility model: through sequentially electrically connected receiving unit, down-converting frequency mixing and filtering unit, signal processing unit, amplitude equalizer, up-converting frequency mixing and filtering unit and automatic gain control unit, the debugging points of each channel are completely Consistent; among them, the amplitude equalizer can effectively compensate the amplitude-frequency inconsistency of the whole system due to transmission cables, frequency converters, amplifiers and other devices, especially due to the phenomenon that the loss increases with the increase of frequency in the process of microwave signal transmission and amplification And the amplitude unevenness generated in the process of digital signal processing AD and DA conversion; the automatic gain control unit performs power amplification and accurate amplitude output on the RF signal output by the up-conversion filter unit. The utility model improves the amplitude and phase flatness and consistency among multiple channels of the radio frequency simulator.
附图说明 Description of drawings
图1是射频模拟器电路框图； Fig. 1 is a circuit block diagram of a radio frequency simulator;
图2是接收单元电路框图； Fig. 2 is a circuit block diagram of a receiving unit;
图3是下变混频滤波单元电路框图； Fig. 3 is a circuit block diagram of the down-conversion mixing and filtering unit;
图4是幅度均衡器电路框图； Fig. 4 is a circuit block diagram of an amplitude equalizer;
图5是上变混频滤波单元电路框图； Fig. 5 is a circuit block diagram of an up-conversion mixing and filtering unit;
图6是自动增益控制单元电路框图； Fig. 6 is a circuit block diagram of an automatic gain control unit;
图中附图标记的含义：1-混频器，2-功率放大器，3为电阻，4为电容，5为电感。 The meanings of reference signs in the figure: 1 - mixer, 2 - power amplifier, 3 - resistor, 4 - capacitor, 5 - inductance.
具体实施方式 Detailed ways
下面结合附图对本实用新型作进一步描述。以下实施例仅用于更加清楚地说明本实用新型的技术方案，而不能以此来限制本实用新型的保护范围。 Below in conjunction with accompanying drawing, the utility model is further described. The following examples are only used to illustrate the technical solution of the utility model more clearly, but not to limit the protection scope of the utility model.
如图1所示，幅相一致多通道射频模拟器，包括依次电连接的接收单元、下变混频滤波单元、信号处理单元、幅度均衡器、上变混频滤波单元和自动增益控制单元。 As shown in Figure 1, the amplitude-phase consistent multi-channel RF simulator includes a receiving unit, a down-conversion mixing filter unit, a signal processing unit, an amplitude equalizer, an up-conversion mixing filter unit and an automatic gain control unit that are electrically connected in sequence.
接收单元接收来自雷达的9.37GHz±200MHz信号，并将其传输给下变混频滤波单元； The receiving unit receives the 9.37GHz±200MHz signal from the radar and transmits it to the down-conversion mixing and filtering unit;
下变混频滤波单元将来自接收单元的9.37GHz±200MHz信号下变频至250MHz±200MHz的中频信号； The down-conversion mixing and filtering unit down-converts the 9.37GHz±200MHz signal from the receiving unit to an intermediate frequency signal of 250MHz±200MHz;
幅度均衡器将数字信号处理单元输出的250MHz±200MHz中频信号幅度不平坦度由6dB改善至1dB； The amplitude equalizer improves the amplitude unevenness of the 250MHz±200MHz intermediate frequency signal output by the digital signal processing unit from 6dB to 1dB;
上变混频滤波单元将幅度均衡器输出的250MHz±200MHz中频信号上变频至9.37GHz±200MHz的射频信号； The up-conversion mixing and filtering unit up-converts the 250MHz±200MHz intermediate frequency signal output by the amplitude equalizer to a 9.37GHz±200MHz radio frequency signal;
自动增益控制单元将上变混频滤波单元输出的射频信号进行放大及幅度精准输出。 The automatic gain control unit amplifies and accurately outputs the radio frequency signal output by the up-conversion mixing and filtering unit.
接收单元：如图2所示，包括依次电连接的限幅器、预选滤波器、低噪声放大器和程控衰减器。所述限幅器置于最前端，用于保护后面的电路不被大输入信号烧毁；所述预选滤波器采用交指型腔体带通滤波器，连接于限幅器之后，用于选择接收信号；所述低噪声放大器采用hittite公司的HMC460放大器芯片，其噪声系数可达3dB，连接于预选滤波器之后，用于将接收信号放大；程控衰减器连接于低噪声放大器之后，用于保证信号的接收动态。 Receiving unit: as shown in Figure 2, it includes a limiter, a pre-selection filter, a low-noise amplifier and a program-controlled attenuator that are electrically connected in sequence. The limiter is placed at the forefront to protect the circuit behind from being burned by a large input signal; the pre-selection filter adopts an interdigitated cavity band-pass filter, which is connected after the limiter and is used to select receiving signal; the low-noise amplifier adopts the HMC460 amplifier chip of hittite company, and its noise figure can reach 3dB, which is connected after the preselection filter to amplify the received signal; the program-controlled attenuator is connected after the low-noise amplifier to ensure that the signal receiving dynamics.
下变混频滤波单元：如图3所示，包括混频器1、本振单元、匹配隔离器及中频滤波器。所述混频器的射频输入端和中频输出端分别连接匹配隔离器，本实施例匹配隔离器选择3dB衰减器用于阻抗匹配；所述本振单元包括依次电连接的锁相频率源、四功分器和功率放大器2；锁相频率源用于产生本振信号，功率放大器2连接于混频器的本振输入端；中频滤波器为LC带通滤波器，连接于混频器的中频输出端，用于滤除混频器输出中频信号的谐杂波。混频器采用MC54MS-14芯片，其中频端对本振的隔离度达40dB，将其封装在镀金小壳体之中以避免接地不良对隔离度的影响。为避免阻抗特性影响带内平坦度指标，在混频器的输入输出端分别加入3dB衰减器作为匹配隔离器。本振单元采用锁相频率源提供9.12GHz本振，并通过相位一致性良好的四功分器及等长电缆为各混频单元提供本振信号。 Down-conversion mixing and filtering unit: as shown in Figure 3, it includes mixer 1, local oscillator unit, matching isolator and intermediate frequency filter. The RF input terminal and the intermediate frequency output terminal of the mixer are respectively connected to a matching isolator, and the matching isolator of this embodiment selects a 3dB attenuator for impedance matching; the local oscillator unit includes a phase-locked frequency source, a four-power divider and power amplifier 2; the phase-locked frequency source is used to generate the local oscillator signal, and the power amplifier 2 is connected to the local oscillator input of the mixer; the intermediate frequency filter is an LC bandpass filter, which is connected to the intermediate frequency output of the mixer The terminal is used to filter the harmonic clutter of the mixer output IF signal. The mixer adopts the MC54MS-14 chip, the isolation of the IF end to the local oscillator is up to 40dB, and it is packaged in a small gold-plated shell to avoid the influence of poor grounding on the isolation. In order to prevent the impedance characteristics from affecting the in-band flatness index, a 3dB attenuator is added at the input and output ends of the mixer as a matching isolator. The local oscillator unit uses a phase-locked frequency source to provide a 9.12GHz local oscillator, and provides local oscillator signals for each mixing unit through a four-power divider with good phase consistency and equal-length cables.
信号处理单元：信号处理单元将下变频输出的中频信号AD（模数转换）采样成数字信号，然后进行信号处理，如测频、测向、测距、战情设置、干扰信号模式等，再经DA（数模转换）将数字信号转换成中频模拟信号进行输出。 Signal processing unit: The signal processing unit samples the intermediate frequency signal AD (analog-to-digital conversion) output by the down-conversion into a digital signal, and then performs signal processing, such as frequency measurement, direction finding, ranging, combat situation setting, interference signal mode, etc., and then The digital signal is converted into an intermediate frequency analog signal by DA (digital-to-analog conversion) for output.
幅度均衡器：如图4所示，包括主传输线、和连接在主传输线上的谐振器。所述谐振器为开路枝节谐振器，多个谐振器并联在主传输线上。开路枝节谐振器由电阻3串联上电感5、电容4的并联谐振组成。幅度均衡器可以有效的补偿整个系统由于传输电缆、变频器、放大器等器件带来的幅频不一致性，特别是由于微波信号传输和放大过程中损耗随着频率增加而加大的现象以及数字信号处理AD/DA过程中产生的幅度不平坦度。幅度均衡器所采用的拓扑结构是多个开路枝节谐振器并联在传输线上。 Amplitude equalizer: As shown in Figure 4, it includes the main transmission line and the resonator connected to the main transmission line. The resonator is an open-circuit stub resonator, and multiple resonators are connected in parallel on the main transmission line. The open-circuit stub resonator is composed of parallel resonance of an inductor 5 and a capacitor 4 connected in series with a resistor 3 . The amplitude equalizer can effectively compensate the amplitude-frequency inconsistency of the whole system due to transmission cables, frequency converters, amplifiers and other devices, especially due to the phenomenon that the loss increases with the increase of frequency in the microwave signal transmission and amplification process and digital signal Amplitude unevenness generated during AD/DA processing is handled. The topology adopted by the amplitude equalizer is that multiple open-circuit stub resonators are connected in parallel on the transmission line.
上变混频滤波单元：如图5所示，上变混频滤波单元包括中频滤波器、混频器、连接于所述混频器本振输入端的本振单元、匹配隔离器及射频滤波器；所述中频滤波器置于最前端与幅度均衡器连接，滤除所述信号处理单元输出信号中的谐杂波；所述混频器的中频输入端和射频输出端分别连接匹配隔离器；所述本振单元包括依次电连接的锁相频率源、四功分器和功率放大器；所述功率放大器连接在所述混频器的本振输入端；所述本振单元将本振信号放大后输入混频器的本振输入端；所述射频滤波器连接于所述混频器输出端的匹配隔离器之后，采用交指型腔体滤波器，滤除上变频后的谐杂波及泄露的本振信号。 自动增益控制单元：包括依次电连接的低噪声放大器、程控衰减器及大动态放大器，如图6所示。所述低噪声放大器设置在最前端，连接于上变混频滤波单元之后，用于弥补混频滤波电路的损耗，有利于提高射频模拟器的噪声系数，避免衰减过大影响输出信号的信噪比，所述程控衰减器连接于低噪声放大器之后，在容易出现线性失真的放大电路前，程控衰减器的衰减范围大于输入信号变化范围；程控衰减器前设置低噪声放大器，既可以弥补前级电路的损耗，又有利于提高射频模拟器的噪声系数，避免衰减过大影响输出信噪比；所述大动态放大器连接于程控衰减器之后，用于满足输出电平及互调等指标。为确保幅相一致性，采用吸收式的程控衰减器以保证良好的驻波特性。自动增益控制单元将上变频滤波单元输出的射频信号进行功率放大及幅度精准输出，从而达到良好的幅度平坦度及一致性。 Up-conversion mixing and filtering unit: as shown in Figure 5, the up-conversion mixing and filtering unit includes an intermediate frequency filter, a mixer, a local oscillator unit connected to the local oscillator input of the mixer, a matching isolator and a radio frequency filter The intermediate frequency filter is placed at the forefront and connected to the amplitude equalizer to filter out the harmonic clutter in the output signal of the signal processing unit; the intermediate frequency input terminal and the radio frequency output terminal of the mixer are respectively connected to a matching isolator; The local oscillator unit includes a phase-locked frequency source, a four-power divider and a power amplifier electrically connected in sequence; the power amplifier is connected to the local oscillator input end of the mixer; the local oscillator unit amplifies the local oscillator signal input to the local oscillator input of the mixer; the RF filter is connected to the matching isolator at the output of the mixer, and an interdigitated cavity filter is used to filter out harmonic clutter and leaked LO signal. Automatic gain control unit: It includes a low-noise amplifier, a programmable attenuator and a large dynamic amplifier that are electrically connected in sequence, as shown in Figure 6. The low-noise amplifier is set at the forefront and connected to the up-conversion mixing and filtering unit to make up for the loss of the mixing and filtering circuit, which is conducive to improving the noise figure of the radio frequency simulator and avoiding excessive attenuation that affects the signal-to-noise of the output signal. Compared, after the programmable attenuator is connected to the low noise amplifier, before the amplifying circuit prone to linear distortion, the attenuation range of the programmable attenuator is greater than the range of input signal variation; The loss of the circuit is also conducive to improving the noise figure of the radio frequency simulator, and avoiding the impact of excessive attenuation on the output signal-to-noise ratio; the large dynamic amplifier is connected behind the programmable attenuator to meet the output level and intermodulation and other indicators. In order to ensure the consistency of amplitude and phase, an absorbing program-controlled attenuator is used to ensure good standing wave characteristics. The automatic gain control unit amplifies the power of the RF signal output by the up-conversion filter unit and outputs the amplitude accurately, so as to achieve good amplitude flatness and consistency.
本实施例实施过程： The implementation process of this embodiment:
接收单元将接收到的射频信号传送给下变混频滤波单元，下变混频滤波单元将接收到的射频信号下变至中频信号；信号处理单元将中频信号AD采样成数字信号，进行数字信号处理，如测频、测向、测距、战情设置、干扰信号模式等常用处理方式，再经DA变换转换成中频模拟信号输出；幅度均衡器补偿信号在下变及数字信号处理时产生的幅度不平坦度；上变混频滤波单元将幅度均衡器输出的中频信号上变至射频信号；自动增益控制单元将上变频滤波单元输出的射频信号进行功率放大及幅度精准输出。 The receiving unit transmits the received radio frequency signal to the down-conversion mixing and filtering unit, and the down-conversion mixing and filtering unit converts the received radio frequency signal to an intermediate frequency signal; the signal processing unit samples the intermediate frequency signal AD into a digital signal, and performs digital signal processing. Processing, such as frequency measurement, direction finding, ranging, battle situation setting, interference signal mode and other common processing methods, and then converted into intermediate frequency analog signal output by DA conversion; the amplitude equalizer compensates the amplitude of the signal generated during down-conversion and digital signal processing Unevenness; the up-conversion mixing filter unit up-converts the intermediate frequency signal output by the amplitude equalizer to a radio frequency signal; the automatic gain control unit performs power amplification and accurate amplitude output on the radio frequency signal output by the up-conversion filter unit.
实测最终射频模拟器各通道间输出信号9.37GHz±200MHz通带内400MHz带宽幅度一致性为1.1dB，相位一致性在10°以内。 The measured output signal between each channel of the final RF simulator has a 9.37GHz±200MHz passband within a 400MHz bandwidth amplitude consistency of 1.1dB, and a phase consistency within 10°.
本实用新型通过设置合理的接收单元、上、下变频混频滤波单元、幅度均衡器、信号处理单元及自动增益控制单元，使各通道调试点完全一致，使得射频模拟器多通道之间幅相平坦度及一致性良好。 The utility model makes the debugging points of each channel completely consistent by setting a reasonable receiving unit, an up-conversion and down-conversion mixing filter unit, an amplitude equalizer, a signal processing unit and an automatic gain control unit, so that the amplitude and phase between multiple channels of the radio frequency simulator Good flatness and consistency.
以上所述仅是本实用新型的优选实施方式，应当指出，对于本技术领域的普通技术人员来说，在不脱离本实用新型技术原理的前提下，还可以做出若干改进和变形，这些改进和变形也应视为本实用新型的保护范围。 The above is only the preferred embodiment of the utility model, it should be pointed out that for those of ordinary skill in the art, without departing from the technical principle of the utility model, some improvements and deformations can also be made. And deformation should also be regarded as the protection scope of the present utility model.
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| CN104820208A (en) * | 2015-03-30 | 2015-08-05 | 中国电子科技集团公司第三十八研究所 | Apparatus of four-surface flat wire-free packaging type radar transceiving assembly |
| CN104833956A (en) * | 2015-03-30 | 2015-08-12 | 中国电子科技集团公司第三十八研究所 | Device with lead wire surface mounting radar transmitting-receiving assembly |
| CN106887998A (en) * | 2017-03-10 | 2017-06-23 | 成都金广通科技有限公司 | The amplitude modulation module of mobile terminal data acquisition system |
| CN109194347A (en) * | 2018-10-12 | 2019-01-11 | 南京屹信航天科技有限公司 | It is a kind of for minimizing the intermediate-frequency circuit of ODU receiving channel |
| CN109547023A (en) * | 2018-11-19 | 2019-03-29 | 中电科仪器仪表有限公司 | A kind of processing circuitry of intermediate frequency and implementation method |
| CN112583360A (en) * | 2021-02-25 | 2021-03-30 | 成都市克莱微波科技有限公司 | Power amplifier amplitude and phase consistency debugging device and method |
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| CN104820208A (en) * | 2015-03-30 | 2015-08-05 | 中国电子科技集团公司第三十八研究所 | Apparatus of four-surface flat wire-free packaging type radar transceiving assembly |
| CN104833956A (en) * | 2015-03-30 | 2015-08-12 | 中国电子科技集团公司第三十八研究所 | Device with lead wire surface mounting radar transmitting-receiving assembly |
| CN106887998A (en) * | 2017-03-10 | 2017-06-23 | 成都金广通科技有限公司 | The amplitude modulation module of mobile terminal data acquisition system |
| CN109194347A (en) * | 2018-10-12 | 2019-01-11 | 南京屹信航天科技有限公司 | It is a kind of for minimizing the intermediate-frequency circuit of ODU receiving channel |
| CN109194347B (en) * | 2018-10-12 | 2024-01-23 | 南京屹信航天科技有限公司 | Intermediate frequency circuit for miniaturized ODU receiving channel |
| CN109547023A (en) * | 2018-11-19 | 2019-03-29 | 中电科仪器仪表有限公司 | A kind of processing circuitry of intermediate frequency and implementation method |
| CN109547023B (en) * | 2018-11-19 | 2022-12-09 | 中电科思仪科技股份有限公司 | Intermediate frequency processing circuit and implementation method |
| CN112615646A (en) * | 2020-12-09 | 2021-04-06 | 中国科学院新疆天文台 | Four-channel intermediate frequency equalizing amplification module used for radio astronomical receiver |
| CN112615646B (en) * | 2020-12-09 | 2022-06-17 | 中国科学院新疆天文台 | Four-channel intermediate frequency equalizing amplification module used for radio astronomical receiver |
| CN112583360A (en) * | 2021-02-25 | 2021-03-30 | 成都市克莱微波科技有限公司 | Power amplifier amplitude and phase consistency debugging device and method |
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