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Issues on the design of a variable power LINC amplifier system in SiGe operating at 2.4 GHz

Issues on the design of a variable power LINC amplifier system in SiGe operating at 2.4 GHz
Issues on the design of a variable power LINC amplifier system in SiGe operating at 2.4 GHz
An increasing number of wireless communication
systems require linear transmitters that can achieve high
efficiency. Good linearity is necessary for bandwidth efficient
modulation while poor efficiency directly affects operational
costs and causes thermal losses in the base station. This paper
examines the implementation of the outphasing technique, also
known as Linear Amplification with Nonlinear Components
(LINC) using a 0.25 ?m SiGe BICMOS process. Adaptation of
the amplifier in order to achieve different power levels, via the
use of Class-F amplifying sections working in parallel is also
examined. The effects of the input and output mismatch
introduced when changing the power level are discussed and
possible solutions presented. Furthermore, specific problems
which arise when using a bipolar technology are addressed. This
work also discusses the adaptation of a tunable phase shifter for
a 1 V supply and wide-linear range. The 2.4 GHz amplifier
system presented in this work achieved a 3-level power control
with a maximum PAE in the range of 58-73%.
439-442
Institute of Electrical and Electronics Engineers
Demanuele, C.
fc261cc6-c58f-4ff0-a214-7a1b55d05996
Grech, I.
0c98fae0-f91a-4802-a840-0e05bc3b83a1
Micallef, J.
dc4b5487-a2a3-45ee-85ef-28c4204379d5
Gatt, E.
b7993c9e-090c-4527-bbba-8abd5f3c01f0
Demanuele, C.
fc261cc6-c58f-4ff0-a214-7a1b55d05996
Grech, I.
0c98fae0-f91a-4802-a840-0e05bc3b83a1
Micallef, J.
dc4b5487-a2a3-45ee-85ef-28c4204379d5
Gatt, E.
b7993c9e-090c-4527-bbba-8abd5f3c01f0

Demanuele, C., Grech, I., Micallef, J. and Gatt, E. (2006) Issues on the design of a variable power LINC amplifier system in SiGe operating at 2.4 GHz. In Proceedings of the 13th IEEE International Conference on Electronics, Circuits and Systems. Institute of Electrical and Electronics Engineers. pp. 439-442 .

Record type: Conference or Workshop Item (Paper)

Abstract

An increasing number of wireless communication
systems require linear transmitters that can achieve high
efficiency. Good linearity is necessary for bandwidth efficient
modulation while poor efficiency directly affects operational
costs and causes thermal losses in the base station. This paper
examines the implementation of the outphasing technique, also
known as Linear Amplification with Nonlinear Components
(LINC) using a 0.25 ?m SiGe BICMOS process. Adaptation of
the amplifier in order to achieve different power levels, via the
use of Class-F amplifying sections working in parallel is also
examined. The effects of the input and output mismatch
introduced when changing the power level are discussed and
possible solutions presented. Furthermore, specific problems
which arise when using a bipolar technology are addressed. This
work also discusses the adaptation of a tunable phase shifter for
a 1 V supply and wide-linear range. The 2.4 GHz amplifier
system presented in this work achieved a 3-level power control
with a maximum PAE in the range of 58-73%.

Full text not available from this repository.

More information

Published date: December 2006
Venue - Dates: 13th IEEE/ICECS International Conference, 2006-12-10 - 2006-12-13

Identifiers

Local EPrints ID: 65193
URI: https://eprints.soton.ac.uk/id/eprint/65193
PURE UUID: 25b7ae02-4f41-4b75-be5f-2e58631256cf

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Date deposited: 17 Feb 2009
Last modified: 05 Dec 2018 17:30

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