ACST 300 GHz transceiver for FMCW radar is designed and manufactured as a bench top unit. It takes an input signal at 11.45 GHz to 13.12 GHz to reach 275 to 315 GHz for the Tx and LO power at 137.5-157.5 GHz for the Rx. A dedicated directional coupler is used to separate the transmitter and receiver LO paths. The typical transmitting power is +14 dBm and 8.5 dB DSB noise figure receiver performance. The transceiver assembly is fixed tuned and does not require any adjustment for proper operation. A dedicated power supply is included. Additional options can be implemented on customer request i.e. TTL modulation port, customized IF-band, horn antennas, different multiplication factor of the AMC, etc.