frequency modulated fuze 调频引信 frequency modulated generator 调频振荡器 相似单词 modulated 已调整[制] 的 signal n. 1.(传递信息、命令等的)信号,手势,声音,暗号 2.(给人警告、信息等的)信号器或信号物 3.触发某些普遍活动的事情或行动;表明某事物存在或可能发生的任何事物 4.(电子脉冲或无线电 ...
PURPOSE: To prevent the contents of information reproduced from a frequency- modulated signal from being influenced by the variation of carrier frequency by supplying the reference level of a demodulated signal to a setting device for controlling the amplitude of a demodulation signal. CONSTITUTION: A...
Signal generator for generating a linear frequency-modulated signal In order to improve the linearity of the frequency modulation, the frequency-modulated signal (fT(t)) and the same signal delayed by a time tau (fT(t- tau ... VDP Mayori,MDI Nalezinski 被引量: 0发表: 1995年 ...
Answer Carson’s Rule to determine the BW for an FSK signal: where Question How can I calculate the occupied bandwidth of a digital frequency modulated signal (2FSK, 2GFSK, 4FSK, 4GFSK)? Answer Carson’s Rule to determine the BW for an FSK signal: where OBW is the occupied bandwid...
How can I calculate the modulation index for a digital frequency modulated signal (2FSK, 2GFSK, 4FSK, 4GFSK)? Answer The general formula for the modulation index is the following: where H is the modulation index, M is the modulation alphabet size (e.g. M=2 for 2FSK / 2GFSK...
The bandwidth, sideband formation and spectrum of a frequency modulated signal are not as straightforward as they are for an amplitude modulated signal.Nevertheless the sidebands and bandwidth of the FM signal are still very important and used within the planning, design and even the maintenance of...
We also find a large DC signal in the spectra, which is originated from the carrier signal reflected from the unmodulated columns. Here we note that the high-order harmonic magnitudes are close to that of the fundamental harmonic, owing to the spatial multipath and shading effects when the ...
For frequency modulation, the frequency f (or angular frequency ω) of the modulated signal linearly varies with the amplitude of the modulating signal s(t). ω=ωp+2kπ.st The expression of the frequency-modulated (FM) signal is given by: vFMt=V0.cosθ1 with: θ1=∫0tωt.dt=∫0...
The signal is shown in arbitrary units (a.u.). Full size image Spin noise spectra for effective positive and negative masses The main goal of a measurement reported in this section is to reveal the difference between a spin oscillator with an effective negative and positive mass. We operate ...
The Error Vector Magnitude (EVM) is a measure of the error in the modulated signal constellation, taken as the root mean square of the error vectors over the active subcarriers, considering all symbols of the modulation scheme. It is expressed as a percentage value in relation to the power ...