difference frequency वाक्य
उदाहरण वाक्य
मोबाइल
- If the difference frequency of light of opposite ends of a broadened spectrum is generated in a nonlinear crystal, the resulting frequency comb is carrier envelope offset-free since the two spectral parts contributing to the DFG share the same carrier envelope offset frequency.
- "' Intermodulation "'( "'IM "') or "'intermodulation distortion "'( "'IMD "') is the amplitude modulation of multiples ) of either, like harmonic distortion, but also at the sum and difference frequencies of the original frequencies and at multiples of those sum and difference frequencies.
- If the two input signals are both frequencies f 1 and f 2, then the output of the mixer will contain two new sinsoids that have the sum f 1 + f 2 frequency and the difference frequency absolute value | f 1-f 2 |.
- To monitor a frequency of 1500 kHz for example, he could set up an oscillator at, for example, 1560 kHz, which would produce a heterodyne difference frequency of 60 kHz, a frequency that could then be more conveniently amplified by the triodes of the day.
- One of the virtues of heterodyne detection is that the difference frequency is generally far removed spectrally from the potential noises radiated during the process of generating either the signal or the LO signal, thus the spectral region near the difference frequency may be relatively quiet.
- One of the virtues of heterodyne detection is that the difference frequency is generally far removed spectrally from the potential noises radiated during the process of generating either the signal or the LO signal, thus the spectral region near the difference frequency may be relatively quiet.
- At that point there is no change in the signal to noise as the gain is raised further . ( Of course, this is a highly idealized description; practical limits on the LO intensity matter in real detectors and an impure LO might carry some noise at the difference frequency)
- A difference frequency only appears in the detector output current when both the LO and signal illuminate the detector at the same time, causing the square of their combined fields to have a cross term or " difference " frequency modulating the average rate at which free electrons are generated.
- It is designed to mimic the tone generated by a typical radio receiver when a CW signal is converted to the intermediate frequency ( IF ), then mixed with the Beat frequency oscillator ( BFO ) frequency to generate a " difference frequency ", which is audible over the radio receiver loudspeaker or headphones.
- A multiplier ( which is a nonlinear device ) will generate ideally only the sum and difference frequencies, whereas an arbitrary nonlinear block would generate also signals at e . g . 2�f 1-3�f 2, etc . Therefore, normal nonlinear amplifiers or just single diodes have been used as mixers, instead of a more complex multiplier.
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