Low sensitivity high-frequency active R filters

The pole of the operational amplifier is utilized to design second-order active filters. The design leads to two amplifier resistive structures. These filters have low sensitivities to active and passive elements and are tunable over a wide range of frequencies for medium and high . The independent control of and is an added feature of the circuit. The structure realizes low-pass and bandpass functions simultaneously. The proposed structure realizes the specified and with lower resistance ratios. Good correlation has been observed between predicted and experimental results conducted at room temperature.