A transceiver (115; 200; 300) for communicating with a target device, the transceiver comprising: a waveguide diplexer (205; 205-a; 205-b; 205-c; 205-d) comprising a common port (220; 220-a; 220-b; 220-c; 220-d) coupled to first and second individual ports, the first individual port (210; 210-a; 210-b; 210-c; 210-d) associated with a transmit frequency range and the second individual port (215; 215-a; 215-b; 215-c; 215-d) associated with a receive frequency range; a transmitter (295; 295-a) coupled with the first individual port of the waveguide diplexer and configured to output a transmit signal to the first individual port within the transmit frequency range; a bidirectional coupler (225; 225-a; 225-b; 505) having a coupled port (230; 230-a; 230-b; 230-c) coupled with the common port of the waveguide diplexer; a loopback translator (240; 240-a; 400) coupled with the coupled port and configured to obtain a loopback signal associated with the transmit signal via the coupled port, to translate the loopback signal from within the transmit frequency range to within the receive frequency range, and to output the translated loopback signal to the bidirectional coupler to couple the translated loopback signal into the common port of the waveguide diplexer; and a receiver (245; 245-a; 245-b) having an input port coupled with the second individual port of the waveguide diplexer and coupled with the loopback translator via a loopback path (250, 255), wherein the loopback path includes a portion of the waveguide diplexer comprising the common port and the second individual port, wherein the receiver is configured to, in a first mode, obtain a received signal from the target device via the waveguide diplexer, and, in a second mode, obtain the translated loopback signal via the loopback path and compare the translated loopback signal to a representation of the transmit signal to generate a compensation signal, wherein the transmitter is further configured to receive the compensation signal and adjust the transmit signal based at least in part on the compensation signal. a waveguide diplexer (205; 205-a; 205-b; 205-c; 205-d) comprising a common port (220; 220-a; 220-b; 220-c; 220-d) coupled to first and second individual ports, the first individual port (210; 210-a; 210-b; 210-c; 210-d) associated with a transmit frequency range and the second individual port (215; 215-a; 215-b; 215-c; 215-d) associated with a receive frequency range; a transmitter (295; 295-a) coupled with the first individual port of the waveguide diplexer and configured to output a transmit signal to the first individual port within the transmit frequency range; a bidirectional coupler (225; 225-a; 225-b; 505) having a coupled port (230; 230-a; 230-b; 230-c) coupled with the common port of the waveguide diplexer; a loopback translator (240; 240-a; 400) coupled with the coupled port and configured to obtain a loopback signal associated with the transmit signal via the coupled port, to translate the loopback signal from within the transmit frequency range to within the receive frequency range, and to output the translated loopback signal to the bidirectional coupler to couple the translated loopback signal into the common port of the waveguide diplexer; and a receiver (245; 245-a; 245-b) having an input port coupled with the second individual port of the waveguide diplexer and coupled with the loopback translator via a loopback path (250, 255), wherein the loopback path includes a portion of the waveguide diplexer comprising the common port and the second individual port, wherein the receiver is configured to, in a first mode, obtain a received signal from the target device via the waveguide diplexer, and, in a second mode, obtain the translated loopback signal via the loopback path and compare the translated loopback signal to a representation of the transmit signal to generate a compensation signal, wherein the transmitter is further configured to receive the compensation signal and adjust the transmit signal based at least in part on the compensation signal.