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 six-port reflectometer having tunable parameters, which can be adjusted to minimize the reflection coefficient measurement uncertainty, is proposed in this letter. The presented six-port has been theoretically analyzed, designed and fabricated. The measurements of reflection coefficients performed in the frequency range 2.2 – 2.6 GHz with the use of the developed six-port prove its enhanced measurement...
A broadband rat-race coupler has been designed in a suspended stripline technique. For broadband operation the needed phase inverter has been realized as a shorted-coupled-line section. Additionally single section matching transformers have been added to improve the return losses. The suspended stripline technique has been chosen for minimizing the coupler's losses. The described circuit has been...
Asymmetric 3-dB coupled-line directional couplers for application in balanced circuits have been considered, and it has been theoretically shown that such couplers allow for simultaneous (equal) power division and impedance transformation. A limitation on achievable impedance ratio has been derived. The theoretical analysis has been experimentally verified by the measurements of a number of passive...
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.