Design of Versatile Biquads with A Single Fully Differential Second-generation Current Conveyor and A Voltage Follow

• Main Authors: Ching-Liang Wang, 王境良
• Other Authors: Chun-Ming Chang
• Format: Others
• Language: zh-TW
• Published: 2003
• Online Access: http://ndltd.ncl.edu.tw/handle/m9mr5p

碩士 === 中原大學 === 電機工程研究所 === 91 === Abstract Two new simpler versatile current/voltage-mode biquads are proposed in this thesis. First, a universal current-mode biquad with two inputs and three outputs or three inputs and one output using a single fully differential second-generation current conveyor (FDCCⅡ) and four grounded/virtually-grounded passive elements is proposed. Then, the other voltage-mode biquad with a single input and three outputs, and two differential-voltage outputs using one FDCCⅡ, one voltage-follower(VF), and four passive elements is proposed. Both proposed circuits have the following advantageous features: simultaneous realization of five generic filter signals from the same configuration without any component matching conditions, no requirements of any cancellation constraints, orthogonal adjustment of ωo/Q and ωo through two separate resistors, employment of two grounded capacitors ideal for integrated circuit implementation, very low active and passive sensitivities, cascadability and simpler circuit structures.