Development of Array Module in Phased Array Radar System to Monitor Space Residue

This research studies the technology of designing an array module corresponding to a transceiver of a phased array radar to monitor space debris. The radar for monitoring space debris considered in this study uses the S-band in the frequency band, and the phased array radar system consists of a digital radar structure. It is difficult to digitize the process since the transmitter and receiver array module from which radar signals are emitted performs the function of amplifying with a high-power signal considering the operating distance of the radar. In this project, the arrangement module of the digital phased array radar, which uses a transmission and reception path in common in an efficient way, was proposed. In addition, an integrated cooling structure that can effectively cool the heat generated when applied to a phased array system was considered, and improving the weight issue of the system was also discussed. As a result, the transmission output of the single array module was 56 dBm or more, and the spread flatness was 0.5 dB under the maximum pulse width of 300 usec in the 2.9–3.2 GHz band. The maximum duty ratio was 10%, and the noise index of the receiver was 4 dB or less, and both were satisfactory.