Biasing Circuits for Voltage Controlled GSM Power Amplifiers

van Bezooijen, André ; Prikhodko, Dima ; van Roermund, A.H.M. (2003) Biasing Circuits for Voltage Controlled GSM Power Amplifiers. In: Gallium Arsenide applications symposium. GAAS 2003, 6-10 October 2003, Munich.
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Abstract

In GSM phones voltage controlled power amplifiers are used to vary the output power.Inaccuracies in output power levels are predominantly caused by drift in PA gain over temperature and input power.In this paper we present biasing circuits that implement an inherently accurate gain control curve.These circuits are based on temperature stabilised V/I-converters and current mirrors.Applying current driven biasing of the first RF-stage reduces the input power dependency of the gain.Measurements show an order of magnitude less drift in PA gain over temperature variations and about a factor five smaller drift over input power variations.The proposed circuits relax the dynamic range and stability requirements on the power control loop and they will help making phone output power calibrations redundant.

Abstract
Tipologia del documento
Documento relativo ad un convegno o altro evento (Atto)
Autori
AutoreAffiliazioneORCID
van Bezooijen, André
Prikhodko, Dima
van Roermund, A.H.M.
Settori scientifico-disciplinari
DOI
Data di deposito
17 Giu 2004
Ultima modifica
17 Feb 2016 13:56
URI

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