In this work we consider the Colpitts oscillator as a paradigm for sinusoidal oscillation and we investigate its nonlinear dynamics. In particular, we carry out a two-parameter bifurcation analysis of a model of the oscillator. This analysis is conducted by combining numerical continuation techniques and normal form theory. First, we show that the birth of the harmonic cycle is associated with ...

This paper demonstrates an on–off keying (OOK) super-regenerative quenching transmitter operating in 402–405 MHz MICs band applications. To reduce power consumption, the is controlled by a novel digital signal controller that generates control to start operation when baseband input transmitter. The consists of envelope detector, comparator, and quench timer designed using state machine synchron...

Growing importance of wireless communication systems forces reduction power consumption the designed integrated circuits. The paper focuses on minimization in a digitally controlled oscillator (DCO) that can be employed as GPS/Galileo receiver. new hybrid architecture DCO combines good phase noise performance Colpitts and relaxed startup conditions cross-coupled differential pair oscillator. pr...

—In this paper, design and fabrication of a Ku-band voltage-controlled oscillator (VCO) using commercially available 0.18 μm SiGe BiCMOS technology is presented. To achieve the low phase noise, the VCO employs a gm-boosted configuration which is a combination of cross coupled VCO and balanced Colpitts VCO, and the VCO simultaneously achieves wide tuning range. The tested results show that the ...