DSB-AM
This modulation is called Double Side Band (DSB) modulation.
The VFO is adjustable in 10hz steps and the transmitter operates in full DSB (Double Sideband Mode).
The VFO is adjustable in 10hz steps and the transmitter operates in full DSB (Double Sideband Mode).
Standard AM is thus sometimes called "double-sideband amplitude modulation" (DSB-AM) to distinguish it from more sophisticated modulation methods also based on AM.
(1) When double sideband emission is used the peak modulation must be maintained between 75 and 100 percent;
The system (100) further includes a baseband circuit (104) for extracting information content from the double sideband electromagnetic wave.
The invention applies single or double sideband carrier-suppressed modulation to generate subcarrier signals for encoding of the label.
A data-directed frequency-acquisition loop capable of generating a frequency error having a magnitude and direction from a double sideband suppressed signal comprises a first multiplier (410) that multiplies the signal by the output of a VCO (420).
HF double-sideband emission
double-sideband amplitude modulation system
The modulation may comprise double-sideband, single-sideband, quadrature amplitude modulation, and so on.
double-sideband single channel radiotelephone emission
A3E double-sideband a full-carrier - the basic Amplitude modulation scheme
A3E double-sideband a full-carrier - the basic amplitude modulation scheme
A3E double-sideband full-carrier – the basic amplitude-modulation scheme
A3E Double-sideband full-carrier – the basic amplitude-modulation scheme
The bandpass filter produces a filtered signal restricted to a given passband of the original video band over which the double-sideband-modulated component is modulated.
The carrier is then suppressed (or removed) to provide a double-sideband suppressed carrier signal.
Standard AM is thus sometimes called double-sideband amplitude modulation to distinguish it more sophisticated modulation methods also based on AM.
Standard AM is thus sometimes called "double-sideband amplitude modulation" to distinguish it from more sophisticated modulation methods based on AM.
However it is possible to talk about a modulation index exceeding 100%, without introducing distortion, in the case of double-sideband reduced-carrier transmission.
Even with the carrier totally eliminated in double-sideband suppressed-carrier transmission, carrier regeneration is possible using a Costas phase-locked loop.
With the carrier eliminated in double-sideband suppressed-carrier transmission, carrier regeneration is possible using a Costas phase-locked loop.
Requêtes fréquentes français :1-200, -1k, -2k, -3k, -4k, -5k, -7k, -10k, -20k, -40k, -100k, -200k, -500k, -1000k, -2000k,
Requêtes fréquentes anglais :1-200, -1k, -2k, -3k, -4k, -5k, -7k, -10k, -20k, -40k, -100k, -200k, -500k, -1000k, -2000k,
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