There is a slightly different but related effect which occurs even with a single sine-wave for which the closed-loop phase shift is a function not only of frequency but also of amplitude. My use of the term phase intermodulation (PIM) concerns the modulation of the phase of a low level high frequency component by a high level lower frequency ...
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amplitude modulation and demodulation Abstract -A single tone sinusoidal signal is transmitted using AMPLITUDE MODULATION and is demodulated at the receiver's end using an ENVELOPE DETECTOR and the attenuated signal is amplified using COMMON SOURCE BJT AMPLIFER.
i have a question about amplitude modulation. in an AM transmitter the signal and the carrier frequency are multiplied with a mixer whose output is fed to the final stage amplifier which is then fed to an antenna. right????
The modulation index of AM is the extent of amplitude variation about an unmodulated carrier amplitude level. The higher the message signal amplitude, the larger the variation on the amplitude of the AM wave. In the section, “Examples - Modulation” on page 8, examples 1, 2, and 3 show the AM for different modulation indices.
The results of a qualitative evaluation of the nonlinear effects in an ultrahigh frequency receiver of the shortwave band based on an electron tube, field effect and bipolar transistors, performed experimentally, are shown in a table. The table presents the permissible values of the amplitude of the AM noise acting at the AM receiver, the evaluation of which is conducted according to a list of ...
Oct 14, 2013 · Amplitude modulation (AM) is a one of the conventional modulation technique to transmit signals using a carrier wave. The amplitude or the strength of a high frequency carrier wave is changed in accordance with the amplitude of message signal. Generation of AM in MATLAB is a piece of cake. If you are new to MATLAB, please go through our tutorials.