Title :
A design method for concurrent tri-band Doherty Power Amplifier
Author :
Costanzo, F. ; Giofre, R. ; Piazzon, L. ; Giannini, F. ; Colantonio, P. ; Deepak Nair, M.V.
Author_Institution :
E.E. Dept., Univ. of Roma Tor Vergata, Rome, Italy
fDate :
March 30 2015-April 1 2015
Abstract :
This paper presents the design of a concurrent tri-band Doherty Power Amplifier (DPA) for 1.84 GHz, 2.14 GHz and 2.65 GHz frequency bands. The frequency response around each operating band is maximally flattened adopting a new design strategy. The DPA is based on hybrid technology using two 8 W GaN HEMT as active devices. The results show a peak of drain efficiency higher than 60 % in each operating band and over 45 % at the corresponding 6 dB output power back-off (OBO). Finally, more than 200 MHz of bandwidth is achieved around each operating frequency.
Keywords :
power amplifiers; DPA; OBO; bandwidth 200 MHz; concurrent tri-band Doherty power amplifier; design method; frequency 1.84 GHz; frequency 2.14 GHz; frequency 2.65 GHz; frequency response; hybrid technology; operating band; operating frequency; output power back-off; power back-off; Bandwidth; Frequency response; Impedance; Microwave amplifiers; Power amplifiers; Power generation; Concurrent PA; Doherty; multiband; power amplifier; tri-band; wideband;
Conference_Titel :
Wireless Symposium (IWS), 2015 IEEE International
Conference_Location :
Shenzhen
DOI :
10.1109/IEEE-IWS.2015.7164633
