whats differance between multiplier and mixer ?

[yihsiu]

could someone tell me the difference between multiplier and mixer?

 

[echo47]

A multiplier performs accurate arithmetic, Y = A * B.

A mixer simply combines two signals non-linearly, usually with the goal of creating new frequency products or amplitude modulation. A mixer can be as simple as two resistors and a diode. A multiplier is a mixer too, but it's an expensive solution if all you need are some frequency products.

 

[freewilly30]

mixer is used to shift signals in frequency domain but keeping the same bandwidth
while multiplier shifts the signal but also multilies the bandwidth

 

[echo47]

while multiplier shifts the signal but also multilies the bandwidth

Are you referring to a frequency doubler/tripler/etc? Yes, they are called "multipliers" too. It's a single-input non-linear device that generates harmonics. Similar to a mixer with both inputs tied together. You add a filter that selects the desired harmonic.

 

[markov_process]

a multiplier can be a core of a mixer
i think mixer is complicated than multiplier