EESage.com

18 Sep '12, 3pm

RF Essentials: Preparing For High Power Levels:

How much power can it handle? That is a question inevitably asked about most components meant for transmitters—and usually for passive components, such as filters, couplers, and antennas. But the increasing power levels of microwave vacuum tubes, like traveling-wave tubes (TWTs), and hearty active devices, such as silicon laterally diffused metal-oxide-semiconductor (LDMOS) transistors and gallium-nitride (GaN) field-effect transistors (FETs), when mounted in well-conceived amplifier circuits, will also be limited by the power-handling capabilities of such components as the connectors and even the printed-circuit-board (PCB) materials. Knowing the limits of the different parts that make up a high-power component or system can help to answer that enduring question. Transmitters require power, within limits. Typically, those limits are set by governing agencies, such as the ...

Full article: http://mwrf.com/components/preparing-high-power-levels

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