Design of Voltage-Mode High-Order OTA-C and CCCII-C All-Pass Filter Structures

• Main Authors: Hsu-Ching Cheng, 鄭旭景
• Other Authors: Chun-Ming Chang
• Format: Others
• Language: zh-TW
• Published: 2004
• Online Access: http://ndltd.ncl.edu.tw/handle/43918666992250649578

碩士 === 中原大學 === 電機工程研究所 === 92 === A synthesis method of high-order voltage-mode all-pass filters is proposed in this thesis. Using (n+2) Second-Generation Current Controlled Conveyors (CCCIIs) and n grounded capacitors to synthesize high-order all-pass filters is presented first. The operational Transconductance Amplifiers and Capacitors (OTA-C) implementation is also obtained from the CCCII-C implementation by using a succession of nullator-norator transformation equivalences. The synthesized all-pass filters simultaneously enjoy the following three important criteria：(i) the least number of active and passive components, (ii) the single-input active elements, and (iii) grounded capacitors. HSPICE simulation with TSMC025 LEVEL49 parameters validate the theory predictions.