A circuit for high frequency crystal oscillators

A novel voltage controlled high frequency crystal oscillator circuits

“…Fig. 5 shows the typical conventional and modified Colpitts oscillator configuration for comparative analysis of drive level and negative resistance characteristics [6]. The feedback capacitor C 3 (C 3 > C 1 ) as illustrated in Fig.…”

Mode-coupling and phase-injection mechanism enables EMI-insensitive crystal oscillator circuits

“…Many research works [1][2][3][4][5][6][7][8][9][10][11][12][13] have exploited different crystal oscillator circuit architectures, which usually play the important role in improving EMI susceptibility, start-up, drive-level, and negative resistance dynamics of the crystal oscillator circuits. But they are expensive and exhibit inferior phase noise.…”

Lamb-Wave Resonator Oscillator Powered by Inductive Compensation of Stray-Capacitance CMOS Inverter

“…A highfrequency, low power, stable clock is needed in telecommunication infrastructure. In a recent work on the high frequency fundamental (HFF) oscillator, the active component was selected among discrete bipolar devices: a germanium silicon transistor (1) . In the industrial solution for high-performance, a significant part of the production is realized by a mixed digital-analogue complementary metal oxide semiconductor field effect transistor (CMOS FET) technology enforced as an integrated digital and analog circuit (2) .…”