A bidirectional amplifier multifunctional chip is a multifunctional microwave/millimeter-wave chip that integrates forward/reverse amplification chains with RF switches, attenuators, phase shifters, limiters, and control circuits on a single chip. It can amplify signals in both directions and, through control signals, implement functions such as channel switching, gain adjustment, amplitude/phase control, and limiter protection. The product features high bidirectional gain, high isolation, low noise figure, 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 bidirectional amplifier multifunctional chip solutions according to customer needs.