Abstract:
Wideband phased array antenna arrays widely use real-time delayers and phase shifters, which are common technical approaches to improve beam performance, but the electromagnetic transmission characteristics of the two types of devices are different, the former is a dispersive device and the latter is a non-dispersive device. In this paper, the working mode of the broadband array is studied, and according to the working characteristics of the delay and the phase shifter, a joint optimization control algorithm is proposed, which converts the delay residual and delay error of the real-time delayers into phase according to the instantaneous bandwidth center frequency of the antenna array, and uses the phase shifter to compensate at the TR channel level. After simulation and analysis of an antenna array, the proposed method can effectively reduce the in-band directional error of the array, and has a broad application prospect in the wideband phased array antenna array.