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

fYear

2008

fDate

23-24 April 2008

Firstpage

1

Lastpage

4

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;

fLanguage

English

Publisher

ieee

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

Type

conf

DOI

10.1109/COMITE.2008.4569946

Filename

4569946