-
Amplitude modulation
The invention of amplitude modulation made radio broadcasting possible. The message signal varies the carrier amplitude. Analyze an AM-signal in time and frequency domain and...
-
AM transmission - envelope detector
An easy way to recover the messsage signal of an AM-modulated signal is the envelope demodulator. In its simplest form the envelope...
-
AM transmission - synchronous detector
In AM transmissions without carrier a simple envelope detection is not possible. A more complex synchronous or coherent detection is required...
-
Amplitude modulation trapeze
The amplitude modulation trapeze plots the modulated signal vs. the message signal including a DC offset that controls the carrier level.
See also: | Amplitude modulation | AM transmitter 1 - record audio transmit signal to file | AM transmitter 2 - transmit recorded signal via USRP |