Simulation and modeling have become ways of life for many RF/microwave design engineers, with designers choosing to predict performance changes in design iterations on a computer screen rather than building and testing different versions of a prototype circuit. In fact, the wide variety of RF/microwave commercial software simulators currently available allows designers to experiment with many different possibilities, such as mixers with different diodes or low-noise amplifiers (LNAs) with different types of transistors. Whether modeling at the device, component, or system level, modern software simulation tools help fuel the design imagination while also paying for themselves after just a few design cycles that take the place of building and testing several different prototypes...
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