Ask modulation and PSK modulation simulation

Ask modulation simulation circuit:

Device Selection:

Select the signal source of the voltage-controlled sine wave in the sources->controlled_valtage_sources->voltage_controlled_sine_wave.

Parameter settings:

Set the signal generator to produce 1KHz, duty-free ratio 50%, amplitude of 5V square wave signal.

Set the voltage control sine wave signal source control array -5v corresponding frequency 0hz,5v corresponds to 10khz,output peak low value = 0v,output Peak High value = 2V.

The simulation results are:

Simulation Results Analysis:

The square wave frequency is 1KHz, the sine wave 5V frequency is 10KHz, by the simulation result can be seen, when the output voltage -5v, the output frequency is 0, when the output voltage 5V, the output frequency is 10KHz, each 0.5 square wave contains 5 period sine wave.

PSK Simulation Circuit:

Device Selection:

Sources->control_function_blocks->multiplier Selecting a multiplier

Sources->power_sources->ac_power Select AC Signal source

Parameter settings:

function Generator set 2.5KHz, duty 50%, amplitude 1V square wave.

AC signal Source set amplitude 1V, frequency 10Khz

Multiplier with default settings

Simulation Waveform:

0

Simulation Results Analysis:

The signal source generates a square wave signal of positive and negative 1V, and the frequency is 2.5KHz. The AC signal source is 10KHz, so a square wave period will contain 4 sine waves. When the square amplitude value is positive 1V, and the sine signal is multiplied, the result is the sine signal itself. When the square amplitude value is negative 1 V, and the sine signal is multiplied, the result is reversed with the original signal, thereby realizing the PSK modulation.

Ask modulation and PSK modulation simulation