Design of T/R module for airborne ultra-wideband phased array radar

Aiming at the requirements of miniaturization, multi-function and high power of airborne radar, a dual-channel ultra-wideband T/R module for multiband(C, X and Ku) is reported. Dimension of this T/R module is 30.0 mm×70.0 mm×8.5 mm. Six bit phase shift and 6 bit amplitude attenuation can be achieved at a working bandwidth of 12 GHz. At the same time, the transmit output power of the module is more than 37 dBm, and the receiving gain is 22 dB. By simulating the passive structure in the circuit, the simulation results and S-parameter model of the RF chips are used for link simulation. The poor VSWR of the ultra-wideband TR module port is improved, and the problem that the receiving gain flatness is poor and difficult to predict is solved at the same time. The T/R module has good performance, including ultra-wideband, low noise, high power output, good phase shift control and amplitude attenuation control.