Two simple sinusoidal oscillators using single Operational Transresistance Amplifier

Electronically Tunable Sinusoidal Oscillator Using Only Single Current-Controlled Current Conveyor Trans-Conductance Amplifier

“…Many researchers have suggested the design of a sinusoidal oscillator using basic active elements like CCII, CCTA, current differential trans-conductance amplifier (CDTA), and operational trans-resistance amplifier (OTRA), etc. to date [5][6][14][15][16][17][18][19][20][21][22][23][24][25]. The implementations using CCTA are generally based on existing BJT-based CCTA or BICMOS.…”

“…Four passive components and two CCII were used in the sinusoidal oscillator design in [18], while a total of three CDTA elements with three passive components were used in [19]. Four passive components are utilized in the OTRA-based design that was proposed in [20], whereas six passive components are employed in [21]. The VDCC-based sinusoidal oscillator proposed in [22] and the VCII-based sinusoidal oscillator proposed in [23] both included a significant number of passive components, whereas the CCTA-based oscillator proposed in [24] is incapable of providing independent electronic tuning and cannot be used to generate a wide range of frequencies.…”

“…This device's versatility has resulted in its ongoing recognition, as indicated by the numerous analog circuit functions that have been built using it [5][6][7][8][9][10][11][12]. To demonstrate its usefulness, the literature proposed multifunction filters [5], direct frequency modulator [6], shadow universal filters [8], memcapacitor emulator [9], differentiator and integrator [10], PID Controller [11], squaring and square-rooting circuits [12], and oscillator [14][15][16][17][18][19][20][21][22][23][24][25] using CCTA. This CCTA block is simply constructed by connecting the output of a second-generation current conveyor (CCII) to the input of a trans-conductance amplifier that has both positive and negative polarities available at its output terminal.…”

A CMOS Morlet Wavelet Generator

“…From 3, three different blocks are required to build the Morlet wavelet: a Gaussian bell shape generator, a sinusoidal source, and a multiplier. In order to perform the multiplication and the sinusoidal signal generation, several topologies have proved to be functional and have enhanced performance [15][16][17][18]. The block diagram realization for (3) is given in Fig.…”

New sinusoidal oscillator configurations using operational transresistance amplifier

“…In recent past, operational transresistance amplifier (OTRA) has gained much consideration from several researchers, due to its inherent pros like bandwidth independent of closed loop gain, higher slew rate, and simplicity in assimilating the effect of parasitic capacitances at the input ports. As a result, OTRA is being used widely for signal processing and generating applications (see previous works and the references cited therein). Consequently, several authors presented different OTRA‐based SO topologies in which oscillators with FO of form 1/2πRC are presented in previous literatures .…”