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Topology | Component numbers and passive component types | Classification of oscillator | Independent control of OC and OF | Signal output mode/buffer circuit requirement | Circuit implement technology |
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CCII-based [5] | CCII × 1 resistor × 3 (grounded) capacitor × 2 (only one grounded) | SSO | Yes OC: by OF: NA | VM/Yes | Commercial ICs |
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CFOA-based [8] | CFOA × 1 resistor × 3 (only one floating) capacitor × 3 (grounded) | SSO | Yes OC: NA OF: by | VM/No | Commercial ICs |
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CDBA-based (Topology a in Figure 2 of [9]) | CDBA × 1 resistor × 2 (floating) capacitor × 2 (only one grounded) | SSO | No OC: NA OF: NA | VM/No | Commercial ICs |
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FTFN-based [10] | FTFN × 2 resistor × 4 (only one grounded) capacitor × 2 (grounded) | SSO | Yes OC: NA OF: by | CM/No | Commercial ICs |
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DVCC-based [11] | DVCC × 1 resistor × 2 (grounded) capacitor × 2 (grounded) | SSO | No OC: NA OF: NA | VM/Yes | CMOS realization |
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OTA-based (Topology a in Figure 2 of [12]) | OTA × 1 resistor × 4 (only one grounded) capacitor × 2 (grounded) | SSO | No OC: NA OF: NA | VM/Yes | Commercial ICs |
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OTRA-based (Topology b in Figure 3 of [17]) | OTRA × 1 resistor × 4 (only one grounded) capacitor × 2 (floating) | SSO | Yes OC: by OF: NA | VM/No | CMOS realization |
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OTRA-based [18] | OTRA × 1 resistor × 3 (only one grounded) capacitor × 2 (floating) | SSO | Yes OC: NA OF: by | VM/No | CMOS realization |
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OTRA-based [19] | OTRA × 2 resistor × 3 (floating) capacitor × 3 (floating) | SSO | Yes OC: by OF: by | VM/No | Commercial ICs |
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OTRA-based [20] | OTRA × 2 resistor × 6 (floating) capacitor × 2 (floating) | QSO | No OC: NA OF: NA | VM/No | Commercial ICs |
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OTRA-based (Figure 2 of [21]) | OTRA resistor (floating) capacitor (floating) (for -phase output) | MSO | Yes OC: by OF: NA | VM/No | Commercial ICs |
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OTRA-based (proposed in Figure 4(a)) | OTRA × 1 resistor × 2 (floating) capacitor × 2 (floating) | SSO | No OC: NA OF: NA | VM/No | CMOS realization/Commercial ICs |
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OTRA-based (proposed in Figure 4(b)) | OTRA × 1 resistor × 3 (only one grounded) capacitor × 2 (floating) | SSO | Yes OC: by OF: NA | VM/No | CMOS realization/Commercial ICs |
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OTRA-based (proposed in Figure 4(c)) | OTRA × 1 resistor × 2 (floating) capacitor × 3 (only one grounded) | SSO | Yes OC: NA OF: by | VM/No | CMOS realization/Commercial ICs |
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