Publication Date:
2018-03-06
Description:
A classic second-order coupled-capacitor Chebyshev bandpass filter using resonator of tunable active capacitor and inductor is presented. The low cost and small size of CMOS active components make the bandpass filter (BPF) attractive in fully integrated CMOS applications. The tunable active capacitor is designed to compensate active inductor’s resistance for resistive match in the resonator. In many design cases, more than 95% resistive loss is cancelled. Meanwhile, adjusting design parameter of the active component provides BPF tunability in center frequency, pass band, and pass band gain. Designed in 1.8 V 180 nanometer CMOS process, the BPF has a tuning frequency range of 758–864 MHz, a controllable pass band of 7.1–65.9 MHz, a quality factor of 12–107, a pass band gain of 6.5–18.1 dB, and a stopband rejection of 38–50 dB.
Print ISSN:
1065-514X
Electronic ISSN:
1563-5171
Topics:
Electrical Engineering, Measurement and Control Technology
