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.
The concurrent transmission and reception of the signals in different frequency bands are required for the mobile terminals in IMT-Advanced systems to support spectrum aggregation systems. The authors have proposed a new transmitter architecture that enables the concurrent transmission of two separate frequency bands. The architecture is based on delta-sigma (ΔΣ) modulation, which converts a non-constant...
This paper proposes a new transmitter architecture that enables concurrent transmission of two separate frequency bands. This is required in order to realize a spectrum aggregation system. The architecture is based on a delta-sigma (????) modulation which converts a non-constant envelope signal into a constant one. This enables the transmitter to employ a switching power amplifier that has high efficiency...
In this paper, two types of dual-band receivers are proposed in order to realize the concurrent reception of two separate frequency bands for a spectrum aggregation system. The proposed receivers consist of a common intermediate frequency stage with a common oscillator and common band-pass filter. By controlling the frequency of the oscillator, the proposed receiver eliminates interference from adjacent...
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.