A novel transformer coupled Colpitts oscillator is used to achieve lower power consumption (250uW) as well as the lower close-in phase noise performance (217 FoM) compared to conventional Pierce and Colpitts oscillators [7].
Transformer Coupled Colpitts Oscillator. Transformer coupled Colpitts oscillator is used to generate the reference clock as shown in Figure 6 [7].
Then the oscillator frequency of the
Colpitts oscillator circuit will be [[omega].sub.0] + [[omega].sub.[DELTA]Z].
Lindberg, "Numerical investigation and experimental demonstration of chaos from two-stage chaotic
Colpitts oscillator in the ultrahigh frequency range", Nonlinear Dyn., vol.
He, "Grid multiscroll hyperchaotic attractors based on
colpitts oscillator mode with controllable grid gradient and scroll numbers," Journal of Applied Research and Technology, vol.
Ran, "Simulation and experimental evaluation of the radar signal performance of chaotic signals generated from a microwave Colpitts oscillator," Progress In Electromagnetics Research, Vol.
Ran, "Ambiguity functions of direct chaotic radar employing microwave chaotic Colpitts oscillator," Progress In Electromagnetics Research, Vol.
Vrba, "Floating capacitance multiplier simulator for grounded RC
colpitts oscillator design," in Proceedings of the 20th International Conference on Applied Electronics (AE '15), pp.
First, a
Colpitts oscillator topology presented in [1] is proposed as in Fig.
The mechanism of synthesizing a hyperchaotic oscillator by use of two coupled chaotic
Colpitts oscillators is discussed in [11].
Figure 2 shows the proposed QVCO circuit with two differential
Colpitts oscillators combined into one QVCO.