Measurement of the AESA Radar Transmit/Receive Module under Simultaneous Transmit/Receive Operation

This paper presents a novel measurement method for evaluating the transmit/receive performance of the transmit/receive modules (TRMs) in active electronically scanned array (AESA) radar systems. Conventional TRMs structurally separate the transmitter and receiver, minimizing internal signal interference and simplifying performance verification. However, a recently developed TRM utilizes system-in-package (SiP) to achieve a compact and integrated structure. The transmitter and receiver are integrated, necessitating the verification of the transmit/receive performance so as to address the interference of internal signals during simultaneous transmission and reception. Moreover, because conventional automated measurement equipment are limited to testing the performances of the transmitter and receiver separately, assessing the influence of internal signal interference is difficult. Therefore, an automated measuring equipment capable of simultaneously testing the transmitter and receiver operations is proposed. Experimental verification of the performance of the integrated TRM, accounting for the influence of internal signal interference using the proposed equipment, is presented.