Function of RF mixer & Selectivity of a receiver

Q.  Function of RF mixer is
- Published on 13 Oct 15

a. Addition of two signals
b. Multiplication of two signals
c. Rejection of noise
d. None of the above

ANSWER: Multiplication of two signals
 
RF mixer translates the frequencies of the two incoming signals from one band to another by multiplying them. When the two incoming signals are mixed, the new frequencies obtained are the sum and difference of incoming signal frequencies .i.e., if the two input signal frequencies are f1 and f2, then the output of the mixer will have signals at frequencies (f1 + f2) and (f1 - f2).

Related Content

➨ Post your comment / Share knowledge


Enter the code shown above:

(Note: If you cannot read the numbers in the above image, reload the page to generate a new one.)
▲