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A reconfigurable DCS1800/W‐CDMA LNA: Design and implementation issues
Author(s) -
Moreira Cristian Pavão,
Kerhervé Eric,
Jarry Pierre,
Belot Didier
Publication year - 2009
Publication title -
international journal of rf and microwave computer‐aided engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.335
H-Index - 39
eISSN - 1099-047X
pISSN - 1096-4290
DOI - 10.1002/mmce.20309
Subject(s) - die (integrated circuit) , electronic engineering , code division multiple access , amplifier , electrical engineering , w cdma , low noise amplifier , engineering , computer science , cmos , telecommunications , mechanical engineering
The authors present in this article a dual‐standard dual‐mode low‐noise amplifier (LNA) for DCS1800/W‐CDMA‐FDD applications. To save die area compared to conventional parallel LNAs, the authors have employed an alternative circuit configuration. It consists of sharing the most die consuming elements (inductances) in both operation standards, enabling a more compact solution. The standard selection is performed through a bias scheme (MOS switches) that allows alternating between the two involved standards. The LNA die area is 1.0 × 1.2 mm 2 and it consumes 6.8 mW (3.8 mA under 1.8 V), including bias circuitry. © 2008 Wiley Periodicals, Inc. Int J RF and Microwave CAE, 2009.