The magnetic field is modulated at high (∼100 kHz) and low (∼2 Hz) frequencies. The high-frequency signal is demodulated by a phase-sensitive lock-in amplifier. The resulting low-frequency output of the lock-in is again demodulated by another phase-sensitive lock-in. As a result, ...
The modulation of these signals will result in an FM modulated signal. This signal is more essential because the frequency of this signal will flow up & down depending on the amplitude of the signal. So this frequency change can be represented in kHz (kilohertz). For instance, once the freq...
frequency-modulated signaldoi:10.1007/1-4020-0613-6_7659Seepulsed frequency-modulated signal.Martin H. WeikSpringer US
phase modulated signal 调相信号 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 Signal n. 信号,暗号,近因,导火线,动机,预兆...
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 Signal n. 信号,暗号,近因,导火线,动机,预兆, 征象 vt. 向…作信号,标志 frequency...
Equation (8.44) indicates that for the ideal condition of Δk≈ 0, the signal experiences an exponential gain as long as the pump intensity is not depleted. Frequency selectivity in pulsed OPOs has been studied in detail by Brosnan and Byer (1979) and Barnes (1995). Wavelength tuning by an...
The SFFM Voltage Source block represents a frequency-modulated AC voltage source whose output voltage value is independent of the current through the source. The following equation describes the output voltage as a function of time: Vout = VO+VA∗sin((2π∗FC∗Time)+MI∗sin(2π∗FS...
of the peak in the FFT signal for each STFT window, and the averaged FWHM measured from a total of 238 STFT windows across the whole bandwidth was found to be 3.43 mm, which is close to our theoretical axial resolution, 2.82 mm, calculated using the coherence length equation (see...
The proximity probe has a transmission branch, which generates and transmits a frequency modulated transmission signal (200). A switch signal connects and disconnects a functional unit of the transmission branch. The frequency of the switch signal is higher than a maximum frequency of the target ...
message (i.e., modulating) signal is used to modify (i.e., modulate) some parameter (e.g., amplitude, frequency, phase) of a periodic (such as a high-frequency sinusoidal) signal known as a carrier wave, individually or in combination, to produce the modulated signal for transmission. ...