Topic
Crystal oven
About: Crystal oven is a research topic. Over the lifetime, 955 publications have been published within this topic receiving 10380 citations. The topic is also known as: oven-controlled crystal oscillator & OCXO.
Papers published on a yearly basis
Papers
More filters
••
31 May 1989TL;DR: In this paper, the authors evaluated five samples of the microcomputer-compensated crystal oscillator built during a development program and verified the feasibility of achieving frequency vs. temperature stability of +or-5*10/sup -8/ with an input power of 45 mW.
Abstract: Evaluation of five samples of the microcomputer-compensated crystal oscillator built during a development program has verified the feasibility of achieving frequency vs. temperature stability of +or-5*10/sup -8/, aging of 1*10/sup -10//day, and hysteresis of no worse than +or-3*10/sup -8/, with an input power of 45 mW. A simulated compensation was performed on several samples of each of two dual-mode oscillator designs. One design uses a lateral-field resonator and the other uses a conventional thickness-field resonator. The frequency could be compensated to better than +or-2*10/sup -8/ for a -55 degrees C to +85 degrees C temperature range for both designs. >
17 citations
•
19 Mar 1973TL;DR: In this paper, an emitter coupled oscillator and automatic gain control is used to maintain the amplitude of the oscillations within a predetermined range to limit crystal drive and to provide a substantially sinusoidal output signal without additional tuned circuits.
Abstract: A crystal controlled oscillator operable over a wide frequency range includes an emitter coupled oscillator and automatic gain control to maintain the amplitude of the oscillations within a predetermined range to limit crystal drive and to provide a substantially sinusoidal output signal without additional tuned circuits
17 citations
•
10 Mar 1992TL;DR: In this article, a high-frequency apparatus using a quartz crystal resonator including a voltage controlled oscillator, a temperature compensated quartz crystal oscillator and the like is described, in which the resonator itself is bonded with coupling of silicon, oxygen, hydrogen, hydroxyl group, and other groups directly to a semiconductor substrate having an active element.
Abstract: Disclosed is a high-frequency apparatus using a quartz crystal resonator including a voltage controlled oscillator, a temperature compensated quartz crystal oscillator and the like, in which a quartz crystal resonator itself is bonded with coupling of silicon, oxygen, hydrogen, hydroxyl group and the like directly to a semiconductor substrate having an active element, thus being integrated in a unitary body
17 citations
••
TL;DR: A fully integrated 52 MHz frequency reference, designed in a 0.35 μm CMOS process, achieves 1.7 ppm frequency temperature accuracy within 0 to 80°C using a nonlinear compensation technique.
Abstract: A fully integrated 52 MHz frequency reference, designed in a 0.35 μm CMOS process, achieves 1.7 ppm frequency temperature accuracy within 0 to 80°C using a nonlinear compensation technique. The proposed low TCf0 reference oscillator achieves the lowest reported uncompensated temperature coefficient, i.e., 65.25 ppm/°C, among the integrated frequency references. The output reference frequency is obtained by dividing the differential LC Colpitts oscillator output operating at 1.6 GHz. Oscillator core dissipates 14 mW from 2.5 V. The blocks related to the temperature compensation scheme and the remaining system blocks consume 3 mW and 165 mW from 3.3 V supply, respectively. The measured phase noise of 52 MHz output is -94 dBc/Hz at 10 kHz offset frequency and rms period jitter is 3.2 ps.
16 citations
••
TL;DR: The basic theory of a simple resistance-inductor-capacitor circuit working in parametric conditions easily can be extended toward a resonant loop that includes a quartz crystal resonator, and results are compared with those actually obtained.
Abstract: Parametric oscillators have been well studied but currently are not used often. Nevertheless, they could be a low-phase noise solution, at least outside the frequency bandwidth of the resonant circuit. The theoretical aspect of parametric oscillations is briefly reviewed in this paper. Indeed, the basic theory of a simple resistance-inductor-capacitor (RLC) circuit working in parametric conditions easily can be extended toward a resonant loop that includes a quartz crystal resonator. Then, as an application, this study is transposed to a quartz crystal oscillator that has been modeled and tested as a first prototype. Simulation results are compared with those actually obtained.
16 citations