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A dual-mode RF front-end module is designed and implemented for Wi-Fi/WiMAX applications. It consists of a front-end MMIC and a dual-band power amplifier MMIC, both fabricated by 0.5 mum E/D-mode p-HEMT process. The front-end MMIC integrates a single-pole triple-throw antenna switch, two low noise amplifiers, a low pass filter and a diplexer in single chip. Overall module size is compact 7 mm times...
In this paper, a medium power amplifier (MPA) designed using 0.5mum GaAs PHEMT technology targeted for a wireless LAN application is presented. The MPA is a two-stage single-ended design which employs a simple RC feedback amplifier. Feedback is an important concept in circuit design, where a signal or voltage derived from the output is superimposed on the input. This output-to-input path can be used...
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