Recent works target the design of fractional-order oscillators. However, some features of such circuits are not frequently considered in the design despite their importance in practice. This work provides an analysis of the fractional-order oscillator design procedure with a simple but still beneficial electronic tuning feature. The presented design allows us to keep a stable and non-standard phase shift between produced harmonic signals while tuning the oscillation frequency of the oscillator. Grounded fractional-order elements and modern commercially available active elements are implemented in the designed topology. Time domain results as well as spectral analysis are obtained from experimental measurements. Moreover, several values of non-standard phase shifts are tested. The experimental verification targets the low-frequency bandwidth from several hundreds Hz up to several kHz because of possible application areas in these bands (audio) and due to a very low-impedance character of the used RC constant phase elements as approximants of fractional-order capacitors.

最近的工作针对分数阶振荡器的设计。然而，尽管这些电路的某些特征在实践中很重要，但在设计中并未经常考虑这些特征。这项工作通过简单但仍有益的电子调谐功能，对分数阶振荡器设计过程进行了分析。提出的设计使我们能够在调节振荡器的振荡频率的同时，在产生的谐波信号之间保持稳定且非标准的相移。在设计的拓扑中实现了接地的分数阶元素和现代商用有源元素。时域结果以及光谱分析可从实验测量中获得。此外，还测试了多个非标准相移值。