MMIC
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MMICs, or Monolithic Microwave Integrated Circuits, are integrated circuit (IC) devices that operate at microwave frequencies. They typically perform functions such as microwave mixing, amplification, and tuning.
MMICs are extremely small (from around 1 mm² to 10 mm²) and can be easily mass produced, which has allowed the proliferation of high radio frequency devices such as the cellular phone. MMICs are most often fabricated using gallium arsenide, making them generally more expensive than silicon ICs, and so are used in applications where efficiency, power or noise requirements are out of the reach of other cheaper technologies.