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.
A compact circularly polarized annular ring antenna is proposed for global navigation satellite systems (GNSS). The antenna is excited by two L-probes connected to the 90± power divider printed on the back. The high impedance of the annular ring working at TM11 mode is transformed to low values by the L-probes. The antenna has a 44.2% 10-dB return loss bandwidth and a 37.8% 3-dB axial ratio bandwidth,...
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.