The signal at the modulation frequency is a sum of the beat signals of the carrier with each of the two sidebands.
22.
To remove this and just leave a DC error signal, the signal from the photodiode is mixed with the original modulation frequency.
23.
The Fleet Tactical Readiness Group provides equipment and technical maintenance support to conduct civil radio broadcasts and broadcast jamming in the amplitude modulation frequency band.
24.
KNTI is a class B FM signal station ( Radio Station Classes defined ) and operates on a Frequency Modulation frequency of 99.5 MHz.
25.
The devices have a wide operating voltage range and include an internal oscillator circuit requiring only the addition of an external resistor to generate the modulation frequency.
26.
As a result, a pair of sidebands separated from the carrier by the modulation frequency appears, giving rise to a so-called FM-triplet.
27.
The upper limit of the frequency is limited by the decrease of thermoelastic expansion with the inverse power of the modulation frequency and the frequency characteristics of the cantilever arrangement.
28.
The modulation frequencies are spread among the octave bands in a balanced way, making it possible to obtain a reliable STI measurement based on a sparsely sampled Modulation Transfer Function matrix.
29.
The output of the photodetector is a standard frequency modulated ( FM ) signal, with the Bragg cell frequency as the carrier frequency, and the Doppler shift as the modulation frequency.
30.
The main benefit of the indirect method over the direct method ( based on modulated test signals ) is that the full MTF matrix is measured, covering all relevant modulation frequencies in all octave bands.
