A 20 mA quiescent current CV/CC parallel operation HBT power amplifier for W-CDMA terminals

Author

Shinjo, S. ; Mori, K. ; Ueda, H. ; Ohta, A. ; Seki, H. ; Suematsu, N. ; Takagi, T.

Author_Institution

Inf. Technol. R&D Center, Mitsubishi Electr. Corp., Kanagawa, Japan

fYear

2002

fDate

3-4 June 2002

Firstpage

249

Lastpage

252

Abstract

A novel constant voltage/constant current (CV/CC) parallel operation HBT power amplifier (PA) configuration is proposed. By combining two HBT´s having different base bias circuits for each (one is CV and the other is CC), non-linearity at large back-off region can be canceled out. Therefore, both low quiescent current and enough ACPR performance can be achieved. The fabricated CV/CC parallel operation HBT PA demonstrates extremely low quiescent current of 20 mA and ACPR of less than -38 dBc at the output power range up to 27.5 dBm.

Keywords

UHF integrated circuits; UHF power amplifiers; bipolar MMIC; bipolar analogue integrated circuits; code division multiple access; heterojunction bipolar transistors; 20 mA; ACPR; HBT power amplifier; W-CDMA terminals; back-off region; base bias circuits; constant voltage / constant current parallel operation; output power range; pinch-off region; quiescent current; Circuits; Heterojunction bipolar transistors; High power amplifiers; Multiaccess communication; Operational amplifiers; Optical amplifiers; Power amplifiers; Power generation; Semiconductor optical amplifiers; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Radio Frequency Integrated Circuits (RFIC) Symposium, 2002 IEEE

Conference_Location

Seattle, WA, USA

ISSN

1529-2517

Print_ISBN

0-7803-7246-8

Type

conf

DOI

10.1109/RFIC.2002.1012042

Filename

1012042