On the Systematic Synthesis of OTA-Based KHN Filters

Radioengineering

关键词: KHN filter;    OTA;    nullor-mirror element;    nodal admittance matrix expansion;   

DOI  :  

来源: DOAJ

【 摘 要 】

According to the nullor-mirror descriptions of OTA, the NAM expansion method for three different types of KHN filters employing OTAs is considered. The type-A filters employing five OTAs have 32 different forms, the type-B filters employing four OTAs have 32 different forms, and the type-C filters employing three OTAs have eight different forms. At last a total of 72 circuits are received. Having used canonic number of components, the circuits are easy to be integrated and both pole frequency and Q-factor can be tuned electronically through tuning bias currents of the OTAs. The MULTISIM simulation results have been included to verify the workability of the derived circuit.

【 授权许可】

Unknown