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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. [ABSTRACT FROM AUTHOR]

An eight-channel transmit/receive module (TRM) was designed for a wideband electronic warfare multiple threat jamming transceiver. In the system, the TRM amplifies a multijamming signal from a multibeam transceiver module and a small radio frequency (RF) signal from an antenna. In TX mode, it has an output power of more than 43 dBm for a continuous wave. In RX mode, it has a gain of more than 10 dB and noise figure of less than 5 dB. The voltage standing wave ratio is less than 2:1, and the TX and RX path isolation is 50 dBc or more. The RF signal amplitude and phase variation are less than 2 dB and 10°, respectively. True time delay and a digital attenuator are used to compensate for the signal amplitude and phase for each channel. [ABSTRACT FROM AUTHOR]