以微分差動電流傳輸器、完全差動電流傳輸器及接地電阻器及電容器設計之濾波電路ANALYTICAL SYNTHESIS METHOD FOR DESIGNING DDCC AND FDCCII-GROUNDED R AND C FILTER STRUCTURE WITH STABLE TRANSFER FUNCTION

專利類型

發明

專利國別 (專利申請國家)

美國

專利申請案號

12/493,184

專利證號

US 8,132,143 B2

專利獲證名稱

以微分差動電流傳輸器、完全差動電流傳輸器及接地電阻器及電容器設計之濾波電路ANALYTICAL SYNTHESIS METHOD FOR DESIGNING DDCC AND FDCCII-GROUNDED R AND C FILTER STRUCTURE WITH STABLE TRANSFER FUNCTION

專利所屬機關 (申請機關)

中原大學

獲證日期

2012/03/06

技術說明

[001] The present invention relates to nth-order differential difference current conveyors (DDCCs) and fully differential current conveyor grounded (FDCCII-grounded) capacitor and resistor filter structures using the analytical synthesis method to employ the minimum number of active and passive components. [002] In an embodiment provides, active elements DDCCs and FDCCIIs are employed with their ability to perform operations of voltage addition and subtraction, in conjunction with the Analytical Synthesis Method (ASM) with its effective operations in simplifying the filter structure, in the realization of voltage-mode nth-order universal filter structures and one voltage-mode third-order elliptic filter structure. Only n DDCCs or (n-1) DDCCs and one FDCCII, n grounded capacitors and n grounded resistors may be employed in the design of the voltage-mode nth-order universal filter structures; only one DDCC and only three DDCCs, three grounded capacitors, and four grounded resistors are involved in the realization of the voltage-mode third-order elliptic filter structure. The grounded type resistors and capacitors may be the most well suited ones in integrated circuit implementation and have much lower parasitics than the floating type components.

備註

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