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GATE ECE 2006 | Question-6

A low-pass filter having a frequency response $\mathrm{H}(\mathrm{j} \omega)=\mathrm{A}(\omega) e^{j^{\phi(\omega)}}$ does not produce any phase distortion, if

  1. $\mathrm{A}(\omega)=\mathrm{C}\omega^{2}, \phi(\omega)=k \omega^{3}$
  2. $\mathrm{A}(\omega)=\mathrm{C}\omega^{2}, \phi(\omega)=k \omega$
  3. $\mathrm{A}(\omega)=\mathrm{C} \omega, \phi(\omega)=k \omega^{2}$
  4. $\mathrm{A}(\omega)=\mathrm{C}, \phi(\omega)=k \omega^{-1}$
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