• # question_answer In the given detector circuit, the suitable value of carrier frequency is A) $<<{{10}^{9}}Hz$    B)        $<<{{10}^{5}}Hz$ C) $>>{{10}^{9}}Hz$    D)        None of these

[a] Using $\frac{1}{{{f}_{carrier}}}<<RC$ We get time constant, $RC=1000\times {{10}^{-12}}={{10}^{-9}}s$ Now $v=\frac{1}{T}=\frac{1}{{{10}^{-9}}}={{10}^{9}}Hz$ Thus the value of carrier frequency should be much less than ${{10}^{9}}Hz,$ say$100kHz$.