Floating/grounded series/parallel R-L, R-C and L-C immittance simulators employing VDTAs and only two grounded passive elements

Floating parallel lossy inductance, parallel lossy capacitance, parallel C‐D, and lossless capacitance multiplier circuits using current feedback operational amplifiers

“…A sinusoidal input voltage with a magnitude of 100 mV and a frequency of 100 kHz was applied to analyze the effect of time-domain analysis. Various simulation results related to the parallel R-C simulator have been shown in Figures 18,19,20,21,and 22. From Figure 19, it can be observed that the simulated magnitude and phase responses of the parallel R-C circuit match well with the theoretical evaluations over a wide range of frequencies. Specifically, the impedance magnitude matches the theoretical values within the frequency range of 1 kHz to 6 MHz, while the phase matches between 1 and 300 kHz.…”

Active Simulation of Grounded Parallel-Type Immittance Functions Employing VDBAs and All Grounded Passive Components

“…However, when applied in the implementation of an integrated circuit (IC), the behavior of passive elements was constrained by its enormous size and suffered from electronic tuning properties. As a consequence, an IC that mimicked the behavior of a passive element was implemented using an active element [7][8][9]. The parallel-type R-L simulators that were suggested in the literature [10][11][12] needed at least three active components.…”

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

“…In Pukkalanun et al, 25 two immittance simulator (series RC and parallel RC) circuits have been implemented using a single voltage difference transconductance amplifier (VDTA) and one grounded capacitor, with electronically tunable multiplication factors without passive component matching requirements. In Moonmuang et al, 26 two grounded immittance simulator circuits (one series RC and one parallel RC) have been presented, using a single VDTA, one grounded resistor, and one grounded capacitor. The multiplication factor of these circuits can also be controlled electronically without requiring any passive component matching conditions.…”

“…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.…”