<a href="http://www.ntsearch.com/search.php?q=Design&v=56">Design</a> of Voltage-Mode High-Order OTA-C Universal Filter Structure Using Linear Combination Approach

• Main Authors: Teng-Shuo Chang, 張登碩
• Other Authors: Chun-Li Ho
• Format: Others
• Language: zh-TW
• Published: 2004
• Online Access: http://ndltd.ncl.edu.tw/handle/942abu

碩士 === 中原大學 === 電機工程研究所 === 92 === Abstract The voltage-mode high-order universal filter structure using linear combination approach has been studied ing this thesis [7-20]. A fundamental high-order multi-function ( lowpass , bandpass, and highpass ) filter structure is realized first. Different order output signals can be obtained from different nodes in the fundarnental filter structure. Therefore, the linear combination of the output signals of the fundamental filter structure maker any kinds of filtering functions. The synthesize voltage-mode high-order universal filter structure employs 2n+4 single-input active elements and n grounded capacitors. The second-generation current controlled conveyors (CCCII) with electronically tunable inner resistance and used in the <a href="http://www.ntsearch.com/search.php?q=design&v=56">design</a>. Using nullator-and norator equivalent transformationk, the CCCII-based filter structure can be transformed into the operational Transconductance Amplifier based filter structure. Note that the transconductance of an OTA is also adjustable by the bias current. H-Spice simulations are used for carrying out the comparison between CCCII-absed and OTA-based filter structures in terms of filtering performance, noise, and sensitivity analysis. Simulation results validate the theory predictons