Title :
A cross-coupled dual-loop feedback power amplifier driver
Author :
Magnusson, Håkan ; Olsson, Håkan
Author_Institution :
Dept. of Microelectron. & Inf. Technol., R. Inst. of Technol., Kista, Sweden
fDate :
28 Aug.-2 Sept. 2005
Abstract :
This paper presents a wide-band power amplifier (PA) driver with matched output. A dual-loop cross-coupled feedback is applied on a simple two stage core amplifier. The use of a dual-loop feedback provides a broad-band 50 Ω output match without the use of any area consuming matching networks. The PA driver exhibits a gain higher than 6.4 dB, more than +1.9dBm 1-dB compression point with S22 less than -22 dB at the output, while dissipating 42 mA from a 1.8V supply. The output 1P3 is better than +13.9 dBm at 2.4 GHz.
Keywords :
UHF power amplifiers; driver circuits; feedback amplifiers; wideband amplifiers; 1.8 V; 2.4 GHz; 42 mA; 50 ohm; dual-loop cross-coupled feedback; output matching; two stage core amplifier; wide-band power amplifier driver; Broadband amplifiers; Distributed amplifiers; Driver circuits; Feedback loop; Frequency; Impedance matching; Inductors; Output feedback; Power amplifiers; Voltage control;
Conference_Titel :
Circuit Theory and Design, 2005. Proceedings of the 2005 European Conference on
Print_ISBN :
0-7803-9066-0
DOI :
10.1109/ECCTD.2005.1523122
