Error of small parameter methods in solving shortened equations of a synchronized oscillator
DOI:
https://doi.org/10.30837/rt.2021.2.205.12Keywords:
synchronized oscillator, shortened equations, small parameter methods, discrepancy, errorAbstract
The paper considers the use of recently appeared analytical methods for solving shortened equations of a synchronized oscillator. These are a quasi-small parameter method and a combined small parameter method. Both methods use the classic small parameter method. A peculiarity of their application is that in this case they are used for solving nonlinear differential equations that do not contain a small parameter. The difference between the above methods is in obtaining the equations of the first approximation. In the quasi-small parameter method, they are linear differential equations obtained by linearizing the original nonlinear differential equations in the area of the zero frequency detuning. In the combined small parameter method, the equations of the first approximation are obtained by approximating the original nonlinear differential equations. Of course, a number of transformations of these equations were made for this. The approximation made it possible to obtain better representation of the original nonlinear differential equations by means of linear differential equations. This representation provided a smaller error, which in both cases was presented as a discrepancy. The discrepancy does not allow obtaining a relative error and investigating its peculiarity.
A study of the relative error of the quasi-small parameter method shows that this error is a continuous function of the frequency detuning with a zero value for a zero frequency detuning.
A function representing relative error has a gap at zero frequency detuning for the combined small parameter method. However, this kind of gap can be eliminated by additional function definition.
References
Khokhlov R.V. A Method of Analysis in the Theory of Sinysoidal Self-Oscillations // IRE Trans. Circuit Theory. 1960. Vol. 7, № 4. P. 398-413.
Ruthroff C.L. Injection-Locked Oscillator FM Receiver Analysis // The B.S.T.J. 1968. № 7. P. 1653 - 1661.
Toyosaku Isobe, Power Amplification for FM and PM Signals with Synchronized IMPATT Oscillators // IEEE Trans. Microwave Theory Tech. 1970. Vol. 18, № 11. P. 906 – 911.
Daikoku K., Mizushima Y., Properties of Injection Locking in the non-linear oscillator // Intern. Journ. of Electronics. 1974. Vol. 31, № 3. P. 279-292.
Biswas B.N., Ray S.K. Discrimination of a Second-Order Injection Syncyhronized Oscillator Against Interfering Tones // IEEE Trans. Circuits Syst. 1974. Vol. 21, № 3. P. 402- 405.
Elwakil A.S., Ozoguz A.S.. On the Generation of Higher Order Chaotic Oscilators via Passive Coupling of Two Identical or Nonidentical Sinusoidal Oscillators // IEEE Trans. Circuits Syst. I. 2006. Vol. 53, № 7. P. 1521 – 1532.
Plessas F.C., Papalambrou A., Kalivas G. A 5-GHz Subharmonic Injection-Locked Oscillator and SelfOscillatoing Mixer // IEEE Trans. Circuits Syst. II. 2008. Vol. 55, № 7. P. 633- 637.
Zhao L., Xiang L., Liu J., Zhou J. Sampled-data group synchronization of coupled harmonic oscillators subject to controller failure // Proc. CCC 34th Chinese. 2015. P. 2309-2314.
Rapin V, Munalo A. Self-oscillator tracking filter with nonlinear feedback // Telecommunications and Radio Engineering. 2019. 78 (2). P.161
Rapin V. Synchronized oscillators with the phase-negative feedback // IEEE Trans. on circuits and systems Fundamental theory and applications. 2002. Vol. 49, №. 8. P 1242 – 1245
Rapin V. On the phase feedback in the synchronized oscillators // Proc. of 2nd IEEE International Conference on Circuits and Systems for Communications, ICCSC, 2004. June 30, Moscow, Russia.
Rapin V. New principle of the phase-locked loop operation // Proc. of 5th IEEE International conference on circuits and systems for communications, 2010. Belgrade, Serbia, November 23-25, P. 145-149
Antonio Buonomo, Alessandro Lo Schiavo. Analytical Approach to the Study of Injection-Locked Frequency Dividers // IEEE Trans. Circuits Syst. I. 2013. Vol. 60, No. 1. P. 51- 62.
Ahmad Mirzaei, Mohammad E. Heidari, Rahim Bagheri. Saeed Chehrazi, Asad A. Abidi. The Quadrature LC Oscillator: A Complete Portrait Based on Injection Ljcking // IEEE Journal of Solid-State Circuits, 2007. Vol. 42, No. 9. P. 1916-1932.
Rapin V.V. Solution of Reduced Equations of Injection-Locked Oscillator // Radioelectronics and Communications Systems 2019. №6. P 271–285.
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