DVTC-Based Series RL/RC Impedance Simulator

Single current follower differential input transconductance amplifier based grounded lossy capacitance multiplier with large multiplication factor

“…These circuits can be categorized as lossless/lossy and/or grounded/floating capacitance multiplier circuits and are used in the design of analog filters and oscillators. Many lossless CM circuits 1,[4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21] and a few lossy capacitance multiplier circuits [22][23][24][25][26][27][28][29][30][31][32][33][34][35][36] employing different ABBs have been reported in literature. As the present work focusses on lossy capacitance multipliers, in the following, we provide a detailed description of previously reported lossy CM circuits to put the proposed work in proper perspective.…”

“…From Table 1, it is seen that there have been limited number of designs of lossy capacitance multipliers in the open literature using various ABBs such as VDTA, VDBA, CFOA, OTA, DVTC, and ECCII. [22][23][24][25][26][27][28][29][30][31][32][33][34] A circuit with parallel immittance simulator having negative resistance and positive capacitance is useful in oscillator design and only one circuit, using two CFOAs, two resistors and one capacitor, has been reported in Özer et al 30 Therefore, in this paper, a new lossy capacitance multiplier circuit is proposed using a single CFDITA, one resistor and one capacitor. The performance of the proposed circuit is validated using 0.18 μm CMOS technology with CFDITA, and experimental results using commercially available ICs AD844 and LM13700 are included to support its performance.…”

“…In Likhitkitwoerakul et al, 27 a grounded parallel‐type RC simulator circuit has been presented using two differential voltage to current converters (DVTC), two resistors, and one capacitor with adjustable equivalent capacitance. In Likhitkitwoerakul et al, 28 a grounded RC impedance simulator employing two DVTC, two resistors and one capacitor has been reported with independently controllable equivalent capacitance. A differential voltage buffer (DVB), electronically controllable CCII (ECCII‐) and a single‐capacitor based capacitance multiplier has been presented in Jerabek et al 29 The reported circuit can also be used as lossy capacitance multiplier while considering the output resistance of DVB and input resistance at input terminal of ECCII‐.…”