Comparison of bandwidth reduction schemes in dynamic load modulation power amplifier architectures
Paper i proceeding, 2011
This paper compares bandwidth reduction schemes for baseband control signals used in high efficiency power amplifier (PA) architectures, such as envelope tracking and dynamic load modulation (DLM). The baseband control signal used in such architectures usually has 3–4 times wider bandwidth than the modulated radio frequency (RF) signal. Such a wideband signal brings challenges for practical hardware design. In this paper, two bandwidth reduction schemes originally used in envelope tracking are applied on a DLM PA. The performance of both schemes are investigated by simulation. The results show that the bandwidth of the baseband control signal can be effectively reduced from 12.5 MHz to 4 MHz, while at the same time, maintaining a 49% average power-added and acceptable linearity.
Författare
Haiying Cao
GigaHertz Centrum
Chalmers, Mikroteknologi och nanovetenskap (MC2), Mikrovågselektronik
Christian Fager
GigaHertz Centrum
Chalmers, Mikroteknologi och nanovetenskap (MC2), Mikrovågselektronik
Talha Khan
Chalmers, Signaler och system
Ali Soltani Tehrani
Chalmers, Signaler och system, Kommunikationssystem, informationsteori och antenner
GigaHertz Centrum
Thomas Eriksson
GigaHertz Centrum
Chalmers, Signaler och system, Kommunikationssystem, informationsteori och antenner
IEEE Workshop on Integrated Nonlinear Microwave and Millimetre-Wave Circuits (INMMIC), 2011
1-4
978-1-4577-0650-9 (ISBN)
Styrkeområden
Informations- och kommunikationsteknik
Ämneskategorier (SSIF 2011)
Elektroteknik och elektronik
Annan elektroteknik och elektronik
DOI
10.1109/INMMIC.2011.5773311
ISBN
978-1-4577-0650-9