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A Hybrid Power Module for a Mobile Communications Telephone
This article describes a 3.5-watt power module designed for a GSM (Global System for Mobile Communications) handheld telephone. The design features proprietary silicon power bipolar devices, lumped elements for input, interstage, and output matching, thick-film alumina ceramic technology, and laser trimmed bias resistors. High-volume manufacturing was a design requirement.
by Melanie M. Daniels
 Article 9 - apr96a9.pdf
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