Topic
Relaxation oscillator
About: Relaxation oscillator is a research topic. Over the lifetime, 1952 publications have been published within this topic receiving 22326 citations.
Papers published on a yearly basis
Papers
More filters
Patent•
03 Nov 196614 citations
TL;DR: This work provides experimental evidence that period-adding bifurcations to chaos previously reported by Kennedy and Chua are intimately connected to the existence of a regime of stable oscillations where the rotation number shows a Devil's-staircase structure.
Abstract: A forced van der Pol relaxation oscillator is studied experimentally in the regime of stable oscillations. The variable parameter is chosen to be the driving frequency. For a range of parameter values, we show that the rotation number varies continuously from 0 to 1. This work provides experimental evidence that period-adding bifurcations to chaos previously reported by Kennedy and Chua are intimately connected to the existence of a regime of stable oscillations where the rotation number shows a Devil's-staircase structure.
14 citations
Patent•
23 May 2003TL;DR: In this article, a nonlinear oscillator with a first linear amplifier, a second linear amplifier and nonlinear amplifier with adjustable linear transconductance region width is described. But the input/output characteristics of the oscillator can be represented by van der Pol equations.
Abstract: A nonlinear oscillator method and apparatus. According to one embodiment, a nonlinear oscillator is closed. The nonlinear oscillator includes a first linear amplifier, a second linear amplifier and nonlinear amplifier having a substantially similar design that includes an adjustable linear transconductance region width. The input/output characteristics of the nonlinear oscillator can be represented by van der Pol equations. In another embodiment, a method for providing nonlinear oscillations is disclosed.
14 citations
Patent•
27 Jul 2011
TL;DR: In this paper, an obtaining method of atomic clock reference frequency and atomic clock thereof was presented, which includes the following steps: a semiconductor laser is driven by a drive current source, and the microwave signals simultaneously, two pumping lasers with same frequency difference and modulating frequency of microwave signals can be generated.
Abstract: The invention discloses an obtaining method of atomic clock reference frequency and atomic clock thereof. The method includes the following steps: a semiconductor laser is driven by a drive current source, and the semiconductor laser is modulated by microwave signals simultaneously; two pumping lasers with same frequency difference and modulating frequency of microwave signals can be generated; the two pumping lasers act on atoms having an Lambda three-level system; when the frequency of microwave signals has deviation with the interval of two lower levels of the Lambda three-level system of the atoms and when the frequency deviation is bigger than spectral half width of coherent population tripping (CPT), a relaxation oscillator signal with the same frequency as CPT detuning transient oscillation is generated; and the frequency of the relaxation oscillator signal is added with the modulating frequency of the microwave signals so as to obtain standard frequency of an atomic clock. Theatomic clock designed according to the method has simple structure and omits a locking circuit of the traditional atomic clock, thereby improving the adaptability for the external environment.
14 citations