Synthesis of Cascadable DDCC-Based Universal Filter Using NAM

Applied Sciences

Huu-Duy Tran¹  Hung-Yu Wang¹  Min-Chuan Lin²  Quoc-Minh Nguyen¹ 

[1] Department of Electronic Engineering, National Kaohsiung University of Applied Sciences, Kaohsiung 807, Taiwan; E-Mails:;Department of Electronic Engineering, Kun Shan University, Tainan 710, Taiwan; E-Mail:

关键词: voltage-mode;    universal filter;    cascadable;    NAM;    DDCC;   

DOI  :  10.3390/app5030320

来源: mdpi

【 摘 要 】

A novel systematic approach for synthesizing DDCC-based voltage-mode biquadratic universal filters is proposed. The DDCCs are described by infinity-variables’ models of nullor-mirror elements which can be used in the nodal admittance matrix expansion process. Applying the proposed method, the obtained 12 equivalent filters offer the following features: multi-input and two outputs, realization of all five standard filter functions, namely lowpass, bandpass, highpass, notch and allpass, high-input impedance, employing only grounded capacitors and resistors, orthogonal controllability between pole frequency and quality factor, and cascadable, low active and passive sensitivities. The workability of some synthesized filters is verified by HSPICE simulations to demonstrate the feasibility of the proposed method.

【 授权许可】

CC BY   
© 2015 by the authors; licensee MDPI, Basel, Switzerland.