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May 2010 [Devices & ICs] MMICs Serve Key Transceiver Functions Monolithic microwave integrated circuits (MMICs) based on gal l ium arsenide (GaAs) have been a part of this industry for a quarter century. And Freescale Semiconductor, the former Motorola Semiconductor, has enjoyed a long history of product development in analog and digital integrated circuits (ICs) and high-power RF transistors. But, although the firm has not lacked for the technological ... August 2009 [Components] LDMOS FETs Power Efficient Doherty Amps Doherty amplifiers have risen from obscurity to become the architecture of choice for many wireless networks, from multicarrier GSM to Long Term Evolution (LTE) cellular systems. Most of these amplifiers rely on laterally diffused metal-oxidesemiconductor (LDMOS) field-effect transistors (FETs), which meet the performance, reliability, and cost requirements of this intensely cost-sensitive market. The transistors produced by the eighth-generation, ... |
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