frekansçevrim
Frekansçevrim, also known as frequency conversion, is a process in telecommunications and electronics where the frequency of a signal is changed. This is achieved using a device called a frequency converter, which typically employs nonlinear elements like diodes or transistors. The core principle involves mixing the input signal with a local oscillator signal to produce new frequencies, which are the sum and difference of the original frequencies. One of these new frequencies is then selected using a filter.
This technique is fundamental to many radio and wireless communication systems. For example, it allows receivers