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.
In this paper, a novel Ultrawideband (UWB) planer antenna with tunable band-notch characteristics is proposed. By changing the bias voltage applied to the varactors, the band-notch frequency center could be easily adjusted accordingly. The simulation results indicate that, when the effective capacitance of the varactor changed from 1 pF to 0.1 p F, the frequency center can be shifted from 3.32 GHz...
A simple, frequency-agile, efficient, near-field resonant parasitic (NFRP) monopole antenna is presented. The NFRP element is a capacitively-loaded loop (CLL) augmented with a varactor diode to achieve the frequency tunability. The numerical and experimental studies agree reasonably well. The experimental results demonstrate that this frequency-agile antenna exhibits a 5.56% 10-dB fractional impedance...
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.