两节DF B激光器的调谐机理可根据波导光栅反射特性的基本相位和幅度来解释。
The tuning mechanism of two-segment DFB lasers is explained in terms of the fundamental phase and amplitude reflection properties of the waveguide gratings.
连续相位调制由于其具有恒定包络幅度且对任意的调制信息序列能保持信号的相位连续，从而能够有效的改进信号的频谱特性。
The continuous phase modulation has the constant amplitude and its phase is continuous, which make the signal has a very good power spectrum.
fir滤波器在保证幅度特性满足技术要求的同时，很容易做到有严格的线性相位特性。
FIR filter in the guarantee range characteristics to meet technical requirements at the same time, very easy to do have the strict linear phase characteristic.
交调失真的不对称性描述了功率放大器的记忆特性，但是与幅度相比，交调分量的相位特性很难测量。
Asymmetries of intermodulation distortions describe the memory effect of power amplifiers (PAs), but it is hard to measure asymmetries of the phase of the IM components.
首先介绍从信号幅度、相位、频率及功率谱等特性中提取的三种特征参数，应用这三种参数采用人工神经网络对模拟调制信号进行了识别。
Three features parameters derived from the instantaneous amplitude, instantaneous phase, instantaneous frequency and power spectrum of analogue modulated signals are presented in this article.
但设计中只考虑了幅度特性，没考虑相位特性，所设计的滤波器一般是某种确定的非线性相位特性。
But design only considered the range characteristics, didn't consider phase characteristic, the design is a certain general filter nonlinear phase characteristic.
但设计中只考虑了幅度特性，没考虑相位特性，所设计的滤波器一般是某种确定的非线性相位特性。
But design only considered the range characteristics, didn't consider phase characteristic, the design is a certain general filter nonlinear phase characteristic.
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