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 design methodology of utilizing the harmonic impedance tuning for the envelope tracking (ET) power amplifier (PA) is proposed in this letter. Owing to the assistance of harmonic tuning, the PA efficiency can be enhanced obviously. Experimental results show that PA prototype exhibits higher than 60% efficiency in the 7‐dB backoff power region and 36% average efficiency including envelope amplifier...
Due to the increasing demands for large capacity and high performance wireless transmitters, multi-band transmitter architectures play an important role in modern communications. Thus, advances in the design techniques of radio frequency (RF) power amplifiers (PAs) have promoted the use of a single multi-band PA and RF components in order to concurrently process multiple input signals located in different...
In this paper, a new envelope tracking (ET) technique is proposed for concurrent dual-band power amplifiers (PAs). By combining the envelopes of two input signals of PAs at different frequency bands with proper weights, the ET technique realizes an enhancement in the total efficiency. The bandwidth of the synthesized envelope is analyzed. The result shows that the proposed ET technique does not increase...
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.