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.
This paper presents an ultra-wide band stubby antenna that covers all current cell phone communication bands from 824 MHz to 6 GHz. The antenna has a volume of 5*8*30 mm3. The antenna is made of a folded V shape stamped sheet metal, which can be easily manufactured, and folded to form a three-dimensional shape. An efficiency of 55~65% was achieved over 824~960 MHz and an efficiency of 67~88% was achieved...
To solve problems of multivariable decoupling controller structure complex and difficult to determine, and training times long etc in the absence of a prior knowledge, A new neural work structure - self-organizing fuzzy controller and on-line algorithm - is proposed. The controller is constituted by three-layer RBF neural network. Dynamical structure training based on error criterion and new adding...
A new cost function of blind equalization for QAM signals is proposed. Under the condition that the in-phase source signal and the quadrature source signal are statistically independent to each other, a simple equalization algorithm using this cost function can simultaneously complete the channel equalization and phase recovery for QAM signals. The simulation results show the algorithm has the similar...
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.