Paper Info
Title
A Digital Linear-Switching Hybrid Power Amplifier for Envelope Tracking Hybrid Supply Modulators.
Abstract
A novel envelope modulator for envelope tracking RF power amplifier (PA) is presented in this paper. The proposed modulator consists of a parallel combination of analog class AB and digitally controlled hybrid PAs. The analog and digital class AB PAs are effective in both reducing the clock frequency and also static power dissipation, thus improving the efficiency of the modulator. On the other hand, lower clock frequencies result in simpler and more powerefficient digital to analog converters required in the architecture. The modulator digital block is evaluated with a 45 nm CMOS technology. The overall power consumption of the digital block is around 76 mW at 800 MHz clock frequency. As an application, the designed digital block is incorporated in a complete envelope modulator architecture. The overall efficiency of the modulator, including the digital block power consumption, is around 80.7% at an average 32 dBm output power for a 5 MHz input signal.
Year
DOI
Venue
2017
10.1142/S0218126617501626
JOURNAL OF CIRCUITS SYSTEMS AND COMPUTERS
Keywords
Field
DocType
Digital processor,envelope modulators,envelope tracking,power amplifier
Control theory,Computer science,Dissipation,Converters,Modulation,CMOS,Hybrid power,Electronic engineering,RF power amplifier,Clock rate,Amplifier
Journal
Volume
Issue
ISSN
26
10
0218-1266
Citations 
PageRank 
References 
0
0.34
6
Authors
3
Name
Order
Citations
PageRank
Atefeh Salimi131.12
Rasoul Dehghani2237.93
Abdolreza Nabavi34717.09