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 .
Transformer Coupled Colpitts Oscillator. Transformer coupled Colpitts oscillator is used to generate the reference clock as shown in Figure 6 .
Then the oscillator frequency of the Colpitts oscillator
circuit will be [[omega].sub.0] + [[omega].sub.[DELTA]Z].
Figure 1 shows the schematic of a high temperature Colpitts oscillator
built aroundaccording to "Wireless Telemetry Electronic Circuitry for Measuring Strain in High Temperature Environments." This is a voltage controlled oscillator, which generates the radio frequency [RE] carrier and modulates the sensor information onto the carrier for wireless transmission.
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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  is proposed as in Fig.
The mechanism of synthesizing a hyperchaotic oscillator by use of two coupled chaotic Colpitts oscillators
is discussed in .
Figure 2 shows the proposed QVCO circuit with two differential Colpitts oscillators
combined into one QVCO.