The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
Increasing the temperature stability of the voltage reference through the use of high-order compensation is a common approach, and good agreement allows achieving high temperature stability. The main drawback of this approach is the high sensitivity of the source parameters to the process variation in the manufacture. Changing the supply voltage without additional actions causes a mismatch circuit...
New application of 4-pole SAW component with small losses for the realization of high-frequency voltage-controlled SAW oscillator is described. In contrast to the known circuit solutions of SAW resonators-based oscillators, a new use of radio frequency SAW filter allows to realize the schematic of Colpitts oscillator with noticeably large continuously frequency tuning range than that of counterparts...
In the article the realization of the new circuit of differential VCO without varactors in 250 nm CMOS technology has been described. The tuning of VCO is realized as a circuit changing load of oscillator. The control curve for differential VCO without varactors is presented. The results of comparing of phase noise for circuits differential oscillators based on N-channel and P-channel transistors...
In the article the task of stable high frequency and high shock-resistance generator design is discussed, critical and contradictory parameters from design point of view are mentioned. Description of Colpitts high frequency surface acoustic wave (SAW) oscillator model is given whose parameters are optimized for devices working in high shock conditions. Using proposed design method practical realization...
Phase noise of reference quartz oscillators limits the ability of radio communication systems. To reduce this noise it is necessary to increase the power dissipated in a quartz resonator. But because of too much power in the crystal plate, thermal stresses appear, being a consequence of the specific components of the additional phase noise caused by the transformation of the amplitude fluctuations...
The article describes the main disadvantages of the commonly used Pierce oscillator circuit. The results of the developing integrated differential crystal voltage controlled oscillator (VCO) for the reference frequency sources are represented. The optimization of the circuit is carried out in terms of phase noise, by applying p-MOS transistors in the circuit. The problem of adjustment the integrated...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.