Title :
High performance 1.5W pHEMT Distributed Power Amplifier with Adjustable Inter-Stage Cascaded Network for 10÷2000 MHz
Author :
Narendra, Krish ; Paoloni, Claudio ; Limiti, Ernesto ; Collantes, J.M.
Author_Institution :
R&D Center, Motorola Technol., Penang
Abstract :
A new topology of high performance pHEMT distributed power amplifier is presented. An adjustable inter-stage cascaded matching network between two non-identical transistors is proposed. The superiority of the topology as indicated by the theoretical discussion is verified through simulation. Gain and PAE of 24 dB and 45+56%, respectively while output power of 32 dBm (plusmn2 dB) for frequency ranges (10+2000 MHz) are achieved. Moreover, stability analysis through pole-zero identification indicated, for this topology, and acceptable stability margin even under large-signal operation.
Keywords :
HEMT circuits; UHF power amplifiers; cascade networks; circuit stability; distributed amplifiers; frequency 10 MHz to 2000 MHz; gain 24 dB; inter-stage cascaded matching network; large-signal operation; nonidentical transistors; pHEMT distributed power amplifier; pole-zero identification; power 1.5 W; stability analysis; Broadband amplifiers; Circuit topology; Distributed amplifiers; FETs; High power amplifiers; Network topology; PHEMTs; Performance gain; Power amplifiers; Stability analysis; Distributed power amplifier; inter-stage network;
Conference_Titel :
Microwave Techniques, 2008. COMITE 2008. 14th Conference on
Conference_Location :
Prague
Print_ISBN :
978-1-4244-2137-4
Electronic_ISBN :
978-1-4244-2138-1
DOI :
10.1109/COMITE.2008.4569946
