Single MCCCCTA-based mixed-mode third-order quadrature oscillator

Kumngern, Montree; Chanwutitum, Jirasak

doi:10.1109/cce.2012.6315943

Cited by 13 publications

(5 citation statements)

References 16 publications

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“…Of late, there also has been considerable research effort on third‐order oscillators since they are expected to provide high‐quality waveforms with low harmonic distortion 2,3 . Consequently, many authors have proposed third‐order quadrature oscillators using a variety of active building blocks (ABB) such as op‐amps, operational transconductance amplifiers (OTA), current differencing transconductance amplifiers (CDTA), multiple‐input second‐generation current conveyors (MOCCII), current differencing buffered amplifiers (CDBA), operational transresistance amplifiers (OTRA), voltage differencing buffered amplifiers (VDBA), differential voltage current conveyors (DVCC), differential difference current conveyors (DDCC), current controlled current conveyors (CCCII), voltage differencing transconductance amplifiers (VDTA), multiple‐output current controlled current conveyor transconductance amplifiers (MOCCCCTA), modified current following transconductance amplifiers (MCFTA), current‐controlled current conveyor transconductance amplifiers (CCCCTA), differential voltage current conveyor transconductance amplifiers (DVCCTA), voltage differencing inverting buffered amplifiers (VDIBA), fully differential second‐generation current conveyors (FDCCII), voltage differencing current conveyors (VDCC), and many more 4–51 …”

Section: Introductionmentioning

confidence: 99%

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Third‐order quadrature sinusoidal oscillators with fully uncoupled tuning laws using only two CFOAs and grounded capacitors

Bhaskar

Raj

Senani

2023

Circuit Theory & Apps

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Recently, three current feedback operational amplifiers (CFOA)-based thirdorder quadrature sinusoidal oscillators (TOQSO) have been presented whose condition of oscillation (CO) and frequency of oscillation (FO) can be regulated independently. In this communication, we present two new TOQSO circuits, which require only two CFOAs and yet achieve as significant features as the quoted circuits, namely, the availability of fully uncoupled control of CO and FO, availability of both outputs from ideally zero output impedance nodes (which is beneficial for easy cascadability in VM operations) and employment of all (three) grounded capacitors as preferred for IC implementation. The verification of the workability of proposed circuits has been carried out experimentally using commercially available off-the-shelf ICs AD844-type CFOAs, and some experimental results have been appended.

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Section: Introductionmentioning

confidence: 99%

“…With the exception of previous works, 4–7 which use only a single ABB, all the quoted third‐order quadrature oscillators (TOSO) have been devised using two to five ABBs. It is obvious that any of the single‐ABB‐based TOQSOs would not be able to provide two quadrature voltage output signals both from low output impedance nodes.…”

Section: Introductionmentioning

confidence: 99%

Third‐order quadrature sinusoidal oscillators with fully uncoupled tuning laws using only two CFOAs and grounded capacitors

Bhaskar

Raj

Senani

2023

Circuit Theory & Apps

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“…9 In open literature, various approaches have been used to realize third-order sinusoidal oscillator (TOSO) circuits. [10][11][12][13][14][15][41][42][43][44][45][46][47][48][49][50][51][52][53][54][55] The reported TOSO circuits have been designed using one of the following approaches:…”

Section: Introductionmentioning

confidence: 99%

“…30 • Oscillators in which the design approaches have not been mentioned explicitly. [31][32][33][34][35][36][37][38][39][40][41][42][43][44][45][46][47][48][49]51,53,54 The main aim of this paper is, thus, to present an approach for systematic realization of third-order LF sinusoidal oscillators (TOLFSOs) realized with minimum number of resistors and grounded capacitors with independent control of CO and FO with different resistors.…”

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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“…However, this structure is suitable only in bipolar technology. The structure in [49] proposed thirdorder QO using a single current-controlled current conveyor transconductance amplifier (CCCCTA), but the circuit does not exploit the full capability of the CCTA when y-terminal of CCTA is not used and attached to ground. Until now, there is no CCCFTA-third-order QO available in open literature.…”

Section: Introductionmentioning

confidence: 99%