Ultra wide band large dynamic figure / analog compatible adjustable attenuator

The invention discloses an ultra wide band large dynamic figure / analog compatible adjustable attenuator. The ultra wide band large dynamic figure / analog compatible adjustable attenuator comprises a signal input end RFIN, a signal output end RFOUT, a first series connection partial pressure attenuation control circuit, a second series connection partial pressure attenuation control circuit and a T-shaped attenuation circuit, wherein the T-shaped attenuation circuit comprises a communication attenuation sub-circuit and a branch attenuation sub-circuit which are respectively controlled by the first series connection partial pressure attenuation control circuit and the second series connection partial pressure attenuation control circuit. Being realized by a monolithic microwave integrated circuit (MMIC) process, the ultra wide band large dynamic figure / analog compatible adjustable attenuator is simple in topological structure, compatible between figure and analog, large in dynamic range, small in attenuation phase displacement, low in inserting consumption, high in attenuation precision, small in input and output end voltage standing-wave ratio, wide in working band, small in circuit size, and convenient to produce in a batch mode and the like, and can be widely applied to electronic control parts in systems such as figure microwave communication, mobile communication, phase array radar, electronic countermeasure and guidance.