thumb|500px|Transmit-Receive (T-R) module used in the CAPTOR-E active electronically scanned array (AESA) airborne radar. The microstrip junction circulator is visible at the left end of the module. The left port of the circulator connects to the antenna port of the module and ultimately to an element of the phased array. The top right circulator port connects to receiver and signal processing circuitry, and the lower right circulator port connects to the transmitter power amplifier near the center of the module. In this instance, the circulator performs a duplexing function.
thumb|500px|Transmit-Receive (T-R) module used in the CAPTOR-E active electronically scanned array (AESA) airborne radar. The microstrip junction circulator is visible at the left end of the module. The left port of the circulator connects to the antenna port of the module and ultimately to an element of the phased array. The top right circulator port connects to receiver and signal processing circuitry and the lower right circulator port connects to the transmitter power amplifier near the center of the module. In this instance, the circulator performs a duplexing function.