Switched mode transmitter architectures
Författare
Redaktör
- Arthur van Roermund
- Herman Casier
- Michiel Steyaert
Summary, in English
With the introduction of new cellular phone standards with increased modulation complexity and signal bandwidth, the design of efficient transmitters will be a major challenge. With this in mind a number of switched mode transmitter architectures are described, both polar and Cartesian ones. The most promising candidates use a combination of supply voltage modulation and other techniques, such as radio frequency pulse width modulation (RF PWM) or polar delta sigma modulation. This takes advantage of the high efficiency of supply voltage modulation combined with the high speed of the other techniques. Since the architectures are polar, however, significant bandwidth expansion occurs, increasing the requirements on the baseband circuits. Also for Cartesian architectures supply voltage modulation can be used to increase the efficiency, for instance in a double LINC architecture.
Avdelning/ar
Publiceringsår
2010
Språk
Engelska
Sidor
325-342
Publikation/Tidskrift/Serie
Analog circuit design
Dokumenttyp
Del av eller Kapitel i bok
Förlag
Springer
Ämne
- Electrical Engineering, Electronic Engineering, Information Engineering
Status
Published
Forskningsgrupp
- Analog RF
ISBN/ISSN/Övrigt
- ISBN: 978-90-481-3082-5