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Northrop Grumman has introduced the FORTITUDE radio frequency chip FORTITUDE based on gallium nitride (GaN), designed for radars, satellite communications, and other systems working with radio signals. The company compares the size of the chip to a grain of rice, yet inside it combines functions that in traditional equipment might require a set of separate components. The main feature of FORTITUDE is the simultaneous switching and filtering of radio frequency signals. The chip can switch them in less than a nanosecond and operate over a wide range - from kilohertz to 20 GHz. Northrop Grumman expects that integrating several tasks into one chip will reduce the number of components, equipment weight, and energy consumption. The core of FORTITUDE is a patented multilayer semiconductor structure - superlattice. It consists of many very thin layers and is designed for more efficient electron movement. According to the manufacturer, this architecture can carry about ten times more charge than standard GaN solutions. This allows for increasing power without a comparable increase in chip size while simultaneously reducing energy losses. Northrop Grumman also claims a threefold increase in power and a 20-fold improvement in signal quality. Important note: published materials do not disclose the measurement methodology, testing conditions, or exact basis for comparison. Therefore, the...
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