SiGe HBT power amplifier for IS-95 CDMA using a novel process, voltage, and temperature insensitive biasing scheme

TitleSiGe HBT power amplifier for IS-95 CDMA using a novel process, voltage, and temperature insensitive biasing scheme
Publication TypeConference Paper
Year of Publication2003
AuthorsSrirattana, N., M. S. Qureshi, A. Aude, V. Krishnamurthy, D. Heo, P. E. Allen, and J. Laskar
Conference NameCircuits and Systems, 2003. ISCAS '03. Proceedings of the 2003 International Symposium on
PaginationI-437 - I-440 vol.1
Date Publishedmay.
Keywords2.5 V, 28 dB, bias current circuitry, bipolar MMIC, circuit stability, code division multiple access, dual stage power amplifier, efficiency, extreme operating conditions, Ge-Si alloys, HBT, heterojunction bipolar transistors, IS-95 CDMA, linear output power, MMIC power amplifiers, output power, power amplifier, predictable stable current, process variations, SiGe, stabilization, supply voltage variations, temperature coefficient, temperature insensitive biasing scheme, temperature variations, UHF integrated circuits, UHF power amplifiers
Abstract

A novel bias current circuitry for SiGe HBT power amplifier which achieves highly predictable stable current under process, voltage, and temperature (PVT) variations is described in this paper. This approach is ideal for mobile applications under extreme operating conditions. The design offers temperature coefficient of 15.7 ppm/ deg;C and enables the stabilization of efficiency and output power with ease. The concept was applied to a dual stage power amplifier designed for IS-95 CDMA standard. Maximum linear output power of 28.2 dBm with a gain of 28 dB at 2.5V supply voltage was achieved. The power amplifier has shown a very good stable performance under process, supply voltage, and temperature variations.

URLhttp://dx.doi.org/10.1109/ISCAS.2003.1205594
DOI10.1109/ISCAS.2003.1205594

a place of mind, The University of British Columbia

Electrical and Computer Engineering
2332 Main Mall
Vancouver, BC Canada V6T 1Z4
Tel +1.604.822.2872
Fax +1.604.822.5949
Email:

Emergency Procedures | Accessibility | Contact UBC | © Copyright 2021 The University of British Columbia