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 proposes a Real-Valued Time-Delay Recurrent Radial Basis Function (RVTDRRBF) model suitable for dynamic modeling of the strongly nonlinear behaviors of the Doherty Power Amplifiers (DPAs). This model has four Tapped Delay Lines (TDLs), which account for the memory effect of the DPA. The structure of the RVTDRRBF model is simpler than the traditional FeedForward Neural Networks (FFNNs) model...
In this paper, a wideband asymmetric Doherty power amplifier (WADPA), which has different LDMOS devices for the carrier and the peaking power amplifiers(MRF7S19080 and MRF8S19140), is designed with the stepped impedance transformer. The carrier and peaking amplifiers of the proposed Doherty amplifier operates in class-AB (2.76V) and class-C (1.3V) bias conditions, respectively, with a drain voltage...
This paper proposes a three-stage broadband Doherty power amplifier with an extended efficiency range for TD-LTE application at 1.9–2.0GHZ. In this design, we use LDMOS devices with a power ratio of 1:1:1, The radial stubs are utilized in the dc bias network to increase the bandwidth. The power added efficiency of the proposed three-stage Doherty PA has been maintained 47% at an average output power...
This paper proposes a 450–470 MHz high efficiency three-stage Doherty power amplifier for IMT-Advanced system. The input matching and output matching are achieved by utilizing microstrip line and lumped-parameter components. Two 3dB couplers are utilized to carry out uneven input power dividing so as to omit the two quarter-wave lines which are usually located before the main amplifier and the second...
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.