Voltage-Mode and Current-Mode Resistorless  Third-Order Quadrature Oscillator

Chen, Hua‐Pin; Hwang, Yuh‐Shyan; Ku, Young

doi:10.3390/app7020179

Cited by 27 publications

(20 citation statements)

References 29 publications

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“…Basic concept of MO-CCCCTA Since the designed circuits are based on MO-CCCCTA, a concise description of MO-CCCCTA has been given in this section. Actually, MO-CCCCTA is a combined form of CCCII and OTA [27]. The schematic symbol and the equivalent circuit of the MO-CCCCTA have been displayed in Figures 1a and 1b, respectively.…”

Section: Circuit Description and Methodologymentioning

confidence: 99%

“…The multiple current output ports of the CCCCTA can be achieved easily by attaching additional current mirrors at the requisite output ports. In earlier literature, the MO-CCCCTA is shown to give a lot of flexibility in designing various analog signal processing circuits, such as oscillator [26][27][28], capacitance multiplier [29], inductance simulator [26,30], universal biquad filter [26,31], etc. However, to the best knowledge of the authors, no squaring or square-rooting circuit employing MO-CCCCTA has been reported so far in any open literature.…”

Section: Introductionmentioning

confidence: 99%

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Simple Current-Mode Squaring and Square-Rooting Circuits: Applications of MO-CCCCTA

2021

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This work provides new designs of simple current-mode squaring and square-rooting circuits using multiple-output current controlled current conveyor transconductance amplifier (MO-CCCCTA) as an active building block. Since the proposed circuits need no other external components, they are capable of high-frequency operation and well fitted for IC fabrication. Furthermore, they are insensitive to ambient temperature and their gains can be controlled easily by adjusting the bias currents of MO-CCCCTA. Additionally, the effects of MO-CCCCTA non-idealities on the designed circuits have also been investigated and discussed. Simulation results generated through PSPICE software using TSMC 0.18 µm CMOS process parameters have been presented to justify the theoretical analysis. The static power consumption, bandwidth, and maximum linearity error in dc transfer characteristic measurement for the square-rooting circuit are found to be 0.17 mW, 445.63 MHz and 1.12 %, while for the squaring circuit they are 0.326 mW, 61.15 MHz and 2.38 %, respectively. The application of the reported circuits as a 2-input vector summation circuit has also been included to strengthen the design ideas. HIGHLIGHTS Simple structures of fully integrable current-mode squarers and square-rooters with low component count and lower power dissipation The circuits are insensitive to temperature drift and their gains can be controlled easily by adjusting the bias currents of MO-CCCCTA Bandwidth, static power dissipation, linearity error of square-rooter are 445.63 MHz, 0.17 mW & ≤ 1.12 %; and for the squarer 61.15 MHz, 0.326 mW & 2.38 %, respectively GRAPHICAL ABSTRACT

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Section: Circuit Description and Methodologymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Simple Current-Mode Squaring and Square-Rooting Circuits: Applications of MO-CCCCTA

2021

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“…More attention is being given to electronically tunable components as traditional electronic components may have deviations in fine-tuning the tolerances of the electronic components [36]. Electronic tunability enhances the controllability of a microcomputer or microcontroller [37].…”

Section: Electronic Tunabilitymentioning

confidence: 99%

Electronically Tunable Lc High Pass Ladder Filter Using Otra

Pandey¹,

Kumar²,

Goel³

et al. 2017

IJME

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This paper presents Operational trans-resistance (OTRA) based electronically tunable high pass L-C based ladder filter. The proposed high pass filter is designed by following a systematic approach using leap frog simulation for ladder filters. The cutoff frequency of the proposed filter can be varied with the application of appropriate voltages to the gate of MOSFETs hence making the design electronically tunable. Therefore, it can be used for RF applications at 455kHz and 1MHz (intermediate frequencies for RF applications). Performance of the proposed circuit is verified through SPICE simulations employing a 0.5m MOSIS AGILENT CMOS realization of OTRA.

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“…16,17,50 • A combination of an inverting lossy integrator with two lossless noninverting integrators in a loop. 15,[24][25][26] • A cascade connection of two noninverting lossy integrators and one lossless inverting integrator with unity feedback. 15,27,28 • A cascade connection of three lossy integrators in a unity negative feedback loop.…”

Section: Introductionmentioning

confidence: 99%

Systematic realization of low‐frequency third‐order sinusoidal oscillators

Raj

Kumar

Bhaskar

2021

Circuit Theory & Apps

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In this paper, a systematic realization technique for low-frequency third-order sinusoidal oscillators (TOSOs) with independent control of condition of oscillation (CO) and frequency of oscillation (FO), employing minimum number of resistors and grounded capacitors, has been presented. Twelve new matrices have been systematically derived. These 12 matrices lead to four distinct low-frequency sinusoidal oscillators with independent control of CO and FO. Workability of these proposed oscillators has been validated through experimental results of low-frequency oscillations operating at 3.03 Hz, realized with off-the-shelf available IC AD844 type CFOAs. The total harmonic distortion of the presented oscillators is below 0.74%, and the frequency deviations are less than 1.06%.

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Voltage-Mode and Current-Mode Resistorless Third-Order Quadrature Oscillator

Cited by 27 publications

References 29 publications

Simple Current-Mode Squaring and Square-Rooting Circuits: Applications of MO-CCCCTA

Simple Current-Mode Squaring and Square-Rooting Circuits: Applications of MO-CCCCTA

Electronically Tunable Lc High Pass Ladder Filter Using Otra

Systematic realization of low‐frequency third‐order sinusoidal oscillators

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