välitaajuudesta
Välitaajuus, in Finnish, translates to intermediate frequency or IF. It is a concept primarily used in radio receivers and signal processing. In superheterodyne receivers, the incoming radio frequency signal is mixed with a locally generated frequency, called the local oscillator frequency, to produce a signal at a fixed, lower frequency. This lower frequency is the intermediate frequency.
The purpose of down-converting the received signal to an intermediate frequency is to simplify the subsequent
The specific value of the intermediate frequency varies depending on the receiver design, but common values