In the given detector circuit, the suitable value of carrier frequency is

Options

A. `ltlt10^(9)Hz`
B. `ltlt10^(5)Hz`
C. `gtgt10^(9)Hz`
D. None of these

Answer

a

Explanation

Using `(1)/(f_("carrier"))ltltRC`
we get time constant, `RC=1000xx10^(-12)=10^(-9)s`
Now `v=(1)/(T)=(1)/(10^(-9))=10^(9)Hz`
Thus the value of carrier frequency should be much less than `10^(9)Hz`, say `100 kHz`.