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Articles by Tetsuo Sato and Chris Grigorean, Hitachi Semiconductor (America) Inc.

Design Advantages of CDMA Power Amplifiers Built with MOSFET Technology

CDMA power amplifiers are now being produced in volume using MOSFET technology, enabling improvements in amplifier performance and system cost. This article discusses the design characteristics of these very flexible and stable devices and explains how...
Each of the many process technologies that can be used for RF power amplifiers - GaAs HBT, PHEMT, InGaP HBT and silicon RF MOSFET - have different advantages, such as better frequency characteristics, wider linearity and higher power capability. A fundamental comparison of the different process technologies is shown...
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