A classic second-order coupled-capacitor Chebyshev bandpass filter using resonator of tunable active capacitor and inductor is\npresented. The low cost and small size of CMOS active components make the bandpass filter (BPF) attractive in fully integrated\nCMOS applications.The tunable active capacitor is designed to compensate active inductorââ?¬â?¢s resistance for resistive match in the\nresonator. In many design cases, more than 95% resistive loss is cancelled. Meanwhile, adjusting design parameter of the active\ncomponent provides BPF tunability in center frequency, pass band, and pass band gain. Designed in 1.8V 180 nanometer CMOS\nprocess, the BPF has a tuning frequency range of 758ââ?¬â??864MHz, a controllable pass band of 7.1ââ?¬â??65.9MHz, a quality factor
Loading....