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Asst.Prof. Dr.Pipat Prommee Oscillators: Analysis and Designs Asst. Prof. Dr. Pipat Prommee Telecommunications Engineering Department KMITL Homepage: www.telecom.kmitl.ac.th/~pipatwww.telecom.kmitl.ac.th/~pipat.

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Presentation on theme: "Asst.Prof. Dr.Pipat Prommee Oscillators: Analysis and Designs Asst. Prof. Dr. Pipat Prommee Telecommunications Engineering Department KMITL Homepage: www.telecom.kmitl.ac.th/~pipatwww.telecom.kmitl.ac.th/~pipat."— Presentation transcript:

1 Asst.Prof. Dr.Pipat Prommee Oscillators: Analysis and Designs Asst. Prof. Dr. Pipat Prommee Telecommunications Engineering Department KMITL Homepage:

2 Asst.Prof. Dr.Pipat Prommee Sinusoidal Oscillator Principle Amplifier KH(s)

3 Asst.Prof. Dr.Pipat Prommee Unstable Network Functions Inv. Laplace

4 Asst.Prof. Dr.Pipat Prommee Unstable Network Functions Double Poles

5 Asst.Prof. Dr.Pipat Prommee Sinusoidal Oscillator Principle No Input condition

6 Asst.Prof. Dr.Pipat Prommee 2 nd Order Polynomial-Based Oscillator and wh ere

7 Asst.Prof. Dr.Pipat Prommee and 3 rd Order Polynomial-Based Oscillator

8 Asst.Prof. Dr.Pipat Prommee N - orders Cascaded Approach For Example: n =3

9 Asst.Prof. Dr.Pipat Prommee Oscillators Designs Asst. Prof. Dr. Pipat Prommee

10 Example 1: Wein-Bridge Oscillator Suppose k=3, the frequency is obtained

11 Asst.Prof. Dr.Pipat Prommee Example 2: Phase-Shift Oscillator Suppose k=-29, the Freq. is obtained

12 Asst.Prof. Dr.Pipat Prommee Voltage-mode Lossy and Lossless Integrators Lossy Integrators Lossless Integrators

13 Asst.Prof. Dr.Pipat Prommee Quadrature Oscillator and wh ere

14 Asst.Prof. Dr.Pipat Prommee 3 rd Order Filter #1 3 rd Order filter based on Lossy and Lossless Integrators

15 Asst.Prof. Dr.Pipat Prommee Principle of 3 rd Order Oscillator #1 [2] IfTherefore

16 Asst.Prof. Dr.Pipat Prommee OTA-based 3 rd filter #1

17 Asst.Prof. Dr.Pipat Prommee OTA-based 3 rd Oscillator #1

18 Asst.Prof. Dr.Pipat Prommee 3 rd Order Filter #2

19 Asst.Prof. Dr.Pipat Prommee 3 rd Order Oscillator #2 [2] IfTherefore

20 Asst.Prof. Dr.Pipat Prommee Voltage Proportional

21 Asst.Prof. Dr.Pipat Prommee OTA-based 3 rd Order filter #2

22 Asst.Prof. Dr.Pipat Prommee OTA-based 3 rd Order Oscillator #2

23 Asst.Prof. Dr.Pipat Prommee OTA-based 3 rd Order Oscillator #2

24 Asst.Prof. Dr.Pipat Prommee CMOS based 3 rd Order Oscillator #1

25 Asst.Prof. Dr.Pipat Prommee Quarature Output of 1 st order Oscillator

26 Asst.Prof. Dr.Pipat Prommee Frequency against biased current and different C of 1 st Oscillator

27 Asst.Prof. Dr.Pipat Prommee CMOS based 3 rd Order Oscillator #2

28 Asst.Prof. Dr.Pipat Prommee Quarature Output Signal of 2 nd order Oscillator

29 Asst.Prof. Dr.Pipat Prommee Frequency against biased current and different C of 2 nd Oscillator

30 Asst.Prof. Dr.Pipat Prommee Current-mode Integrator based on OTA Lossy Integrators Lossless Integrators

31 Asst.Prof. Dr.Pipat Prommee CMOS OTA

32 Asst.Prof. Dr.Pipat Prommee Current-mode OTA Oscillator #1 [4]

33 Asst.Prof. Dr.Pipat Prommee Current-mode OTA Oscillator #2 [4]

34 Asst.Prof. Dr.Pipat Prommee Current-mode OTA Oscillator Output [4]

35 Asst.Prof. Dr.Pipat Prommee Current Controlled Current Conveyor (CCCII) [7]

36 Asst.Prof. Dr.Pipat Prommee OTA against CCCII X YZ+ Z- CCCII IbIb V in IOIO

37 Asst.Prof. Dr.Pipat Prommee Current-mode Oscillator based on CCII [3]

38 Asst.Prof. Dr.Pipat Prommee Oscillator outputs

39 Asst.Prof. Dr.Pipat Prommee CCCII-based differentiator and Integrator Lossy Differentator Lossy Integrator

40 Asst.Prof. Dr.Pipat Prommee N-order (odd) Oscillators [1]

41 Asst.Prof. Dr.Pipat Prommee N-order (Even) Oscillators [1]

42 Asst.Prof. Dr.Pipat Prommee Oscillation Output

43 Asst.Prof. Dr.Pipat Prommee References 1.A.R. Vazquez, B.L. Barrnco, J.L. Huertas and E.S.Sinencio, On the design of voltage-controlled sinusoidal oscillators using OTAs, IEEE Trans. Circuits and Syst., Vol. 37, No. 2, Feb M. T. Abuelmaatti and M. A. Al-Qahtani, A New Current-Controlled Multiphase SinusoidalOscillator Using Translinear Current Conveyors, IEEE Trans. Circuits and Syst.-II, Vol. 45, No. 7, July S.J.G. Gift, Multiphase Sinusoidal Oscillator Using Inverting-Mode Operational Amplifiers, IEEE Trans. Instru. and Meas., Vol. 47, No. 4, Aug P. Prommee, K. Dejhan,An integrable electronic-controlled quadrature sinusoidal oscillator using CMOS operational transconductance amplifier,International Journal of Electronics, Vol.89, no.5, pp , S. Maheshwari and I.A. Khan, Current controlled third order quadrature oscillator, IEE Proc. Circuits Devices Syst., Vol. 152, No. 6, December T. Tsukutani, Y. Sumi and Y. Fukui, Electronically controlled current- mode oscillators using MO-OTAs and grounded capacitors, Frequenz, Vol.60 pp , F. Seguin and A. Fabre, New Second Generation Current Conveyor with Reduced Parasitic Resistance and Bandpass Filter Application, IEEE Trans. Circuits and Syst.-I, Vol. 48, No. 6, June 2001.


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