An amplifier/attenuator multifunctional chip is a multifunctional microwave/millimeter-wave chip that integrates an amplification chain, attenuators, RF switches, and control circuits on a single chip. It can perform gain amplification and amplitude attenuation adjustment of signals, and through control signals, implement functions such as gain control, channel switching, and signal routing. The product features high gain, wide attenuation range, fine attenuation step, high attenuation accuracy, wide dynamic range, good linearity, fast switching speed, good amplitude/phase consistency, high integration, small size, and high reliability. It can cover the DC–50 GHz microwave/millimeter-wave signal chain and meet the requirements of different quality grades of national military standards (GJB) and various application platform environments. It is widely used in phased-array radar, T/R modules, communications, electronic countermeasures, satellite communications, test and measurement, and other fields. Based on GaAs, GaN, SiGe, CMOS and other process platforms, the company can provide customized amplifier/attenuator multifunctional chip solutions according to customer needs.