The basic block diagram consists of a modulator which may be a product modulator or a balanced modulator. The audio input signal is fed to the input of the modulator and there it is being multiplied by the carrier signal which is generated by using a oscillator.
This block diagram in its crude form is given by:
Whether it is an analogue or a digital broadcast, a block diagram is the basic structure of a television broadcast. The is structure begins with the camera and mic, goes through the amplitude and frequency modulation phases, combines the video and audio, and transmits it out via a network tower or satellite.
nonlinear device modulation is a process which imparts to sinusoidal two or more amplitude levels.
micxingthe between the phasr and frepaancy shift keying
Please define which limitation is being addressed here.
AM means Amplitude(=height) modulation, so the frequency stays the same and the message is coded into variations of the strength of the signal. FM stands for Frequency modulation. Here the strength of the signal stays the same and the message is coded into changes in frequency instead.
Explain with diagram the technique Pulse-width modulation?
Block digram of fsk is the representation of fsk modulation
AM - Amplitude Modulation FM - Frequency Modulation
QAM is a combination of phase modulation & amplitude modulation.
In amplitude modulation, modulation depth refers to the ratio of the unmodulated carrier amplitude to the amplitude deviation for which the modulated carrier wave reaches its minimum value. If this minimum value is zero, the modulation depth is 100%.For amplitude modulation,modulation depth = (a-b)/(a+b),wherea is the unmodulated carrier amplitude, andb is the minimum amplitude deviation.The modulation depth ratio is also referred to as the modulation index.
amplitude modulation is where we modulate our signal with a carrier signal amplitude changes but frequency remains constant in amplitude modulation
Frequency modulation have some advantages over amplitude modulation, FM is not sensitive to the amplitude noise, and have high efficient use of transmitted power
Normal frequency range for amplitude modulation is 550kHz to 1610kHz
In amplitude modulation, modulation depth refers to the ratio of the unmodulated carrier amplitude to the amplitude deviation for which the modulated carrier wave reaches its minimum value. If this minimum value is zero, the modulation depth is 100%.For amplitude modulation,modulation depth = (a-b)/(a+b),wherea is the unmodulated carrier amplitude, andb is the minimum amplitude deviation.The modulation depth ratio is also referred to as the modulation index.
Amplitude modulation is a method of sending information by modifying the intensity of a carrier wave.
the maximum amplitude of carrier wave varied with respect to instantaneous values of message signal is called amplitude modulation
Amplitude Modulation (AM) Frequency Modulation (FM)