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A New Circuit Model for Designing Fully Integrated Class-A Power Amplifier

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4 Author(s)
Xiaokang Guan ; Dept. of ECE, Illinois Inst. of Technol., Chicago, IL ; Haigang Feng ; Albert Wang ; Liwu Yang

This paper presents a new circuit model for Class-A power amplifier (PA), which can be used to guide design of fully-integrated PA by accurately estimating the optimum load resistance (Ropt), hence to achieve optimized PA performance, e.g., gain, output power (Po), power-added efficiency (PAE) and harmonics, etc. A new figure-of-merit (F) is introduced as a design criterion in practical PA design to ensure optimum overall circuit performance. This new model is verified using a two-stage fully-integrated 2.4GHz class-A PA designed and implemented in a commercial 0.35mum SiGe BiCMOS technology

Published in:

Microelectronics, 2006 25th International Conference on

Date of Conference:

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