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 a wide bandwidth fully integrated CMOS power amplifier (PA) suitable for pulse-mode operation. The CMOS PA was implemented in a 90-nm process with core size of 1 mm2. A pulse-modulated polar transmitter for LTE femtocell applications was constructed with this switching CMOS PA using the aliasing-free digital pulse-width modulation technique. With conventional memoryless digital...
The pulse-modulated polar transmitters have been developed to answer the call for the need of linear and efficient power amplification for wireless applications. The envelope of the modulated RF signal is converted into the pulse train by means of pulse width modulation or delta-sigma modulation. The power amplification of the pulse train can be performed by the highly efficient power amplifiers without...
This paper presents a pulse modulated polar transmitter with the designed class-E power amplifiers for CDMA handsets. Compared to the conventional drain/collector-modulated envelope elimination and restoration transmitter, the presented implementation is capable of reducing circuit complexity and making the envelope and RF phase signals easily synchronized. A prototype transmitter system is constructed...
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.