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frequency response characteristic    
相关语句
  频率响应特性
    In addition, by introducing transfer function of input circuit, the inherent property of improving the frequency response characteristic is explained clearly.
    特别引入了输入电路传输函数,这就明确地解释了负反馈放大器频率响应特性改善的实质。
短句来源
  频率特性
    The tester for frequency response characteristic based on DDS is introduced, it usesmicro controller as the key device, displaying amplitude and phase frequency characteristic curveswith LCD and printing them .
    介绍了基于DDS设计的频率特性测试仪,整个系统以单片机为控制核心,实现了对被测网络频率特性的测量,用液晶显示器LCD显示幅频特性和相频特性曲线,同时还可打印频响曲线。
短句来源
    A Digital Tester For Frequency Response Characteristic Base on The High Performance DDS Chip AD9954
    基于AD9954的数字化频率特性测试仪的研制
短句来源
    The digital tester for frequency response characteristic, which is also called frequency-sweeping instrument, plays a very important role in modern electronic measurement.
    扫频仪也称频率特性测试仪,用于测试网络的幅频特性和相频特性,在现代电子测量中占有重要的位置。
短句来源
    It brings many discommodity to the user. In the paper, the digital tester for frequency response characteristic based on the high performance DDS chip AD9954 is presented.
    本文阐述了基于高性能DDS芯片AD9954的数字化频率特性测试仪的设计。
短句来源
  频率响应特性
    In addition, by introducing transfer function of input circuit, the inherent property of improving the frequency response characteristic is explained clearly.
    特别引入了输入电路传输函数,这就明确地解释了负反馈放大器频率响应特性改善的实质。
短句来源
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  frequency response characteristic
It is shown that diffusants which take part in surface reactions of finite rate or are subject to reversible trapping within the solid have a frequency response characteristic of the process involved.
      
A composite method to determine the tapping coefficients along with the coefficients of the subfilter to approximate overall frequency response characteristic is proposed.
      
Theoretical studies have been made on the effective ionization rates of electrons and holes of the device, I-V characteristic and the frequency response characteristic of the AlxGa1-xAs/GaAs superlattice p+-i-n+ structure.
      
Probe bandwidth refers to the frequency response characteristic of a probe and specifies the normal operating frequency range of the probe.
      
In contrast to this, phonograph preamp circuits not only scale the signal, they also impart a specific frequency response characteristic to it.
      
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In this paper, the shunt-series negative feedback amplifier pair is analyzed by the method of loop voltage gain function instead of usually loop current gain function method. By this method, the experiment measurement matches theoretical analysis well, while the later method dosen't. In addition, by introducing transfer function of input circuit, the inherent property of improving the frequency response characteristic is explained clearly.

本文用环路电压增益函数而不是常用的环路电流增益函数方法来分析串并联负反馈对放大器,这使得理论分析和实验测量之间的配合问题得以解决。特别引入了输入电路传输函数,这就明确地解释了负反馈放大器频率响应特性改善的实质。

A method for calculating the frequency response characteritics of the planar hybrid power divider (PHPD) is presented. The frequency response characteristics of three-way, four-way and five-way PHPDs on the voltage standing wave ratio, power trasmission coefficient and isolation are given. As for the three-way PHPD, the loss of uniform transmisson lines and its influence on the performane of PHPD are discussed.

给出一种计算平面混合功分器频响特性的方法。计算了在中心频率上,各端口完全匹配且各输出口之间完全隔离的,最平坦型三、四和五路无损均匀传输线平面混合功分器的电压驻波比、功率传输系数和隔离的频响特性。以三路损耗均匀传输线平面混合功分器为例,讨论了均匀传输线的损耗对频响特性的影响。

In this paper, by means of treating the E.M. field problem of a double Y-junction circulator as a six-port net-work with symmetric nonreciprocal junction, the impedance matrix of the network is derived. On the basis of the principle of field matching at each port, three impedance eigenvalues of the symmetrical three-port dual Y-junction are obtained. By using the equation of eigenvalue, two circulating conditions are achieved. The normalized curves of the normal junction admittance, the field variables and the...

In this paper, by means of treating the E.M. field problem of a double Y-junction circulator as a six-port net-work with symmetric nonreciprocal junction, the impedance matrix of the network is derived. On the basis of the principle of field matching at each port, three impedance eigenvalues of the symmetrical three-port dual Y-junction are obtained. By using the equation of eigenvalue, two circulating conditions are achieved. The normalized curves of the normal junction admittance, the field variables and the magnetic parameters are obtained with the circulating conditions satisfied. Finally, a new design approach for circulator is proposed with some normalized design examples of some classical circulator attac-hed. The forward and reverse frequency response characteristics are calculated.

本文先把双Y结环行器的电磁场问题当作一个对称非互易结六端口网络来处理,求出该网络的阻抗矩阵,利用各端口场匹配原理,求出对称三端双Y结的三个阻抗本征值,由此本征值求出两个环行条件。然后计算了环行器的归一化结导纳,场变量kR和磁参数K/μ在满足环行条件下的规范曲线。最后,提出了环行器新的设计方法,举出了典型环行器的规一化设计实例,算出了正反方向的频响特性。

 
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