A radar device is provided. The radar device includes an antenna and a housing having an exterior wall. The radar device also includes an electronics module having a heat source contained within the housing. Additionally, the radar device includes a heat pipe having a first end and a second end. The first end is positioned proximate to the heat source, and the heat pipe is configured to transfer heat from the first end of the heat pipe to the second end of the heat pipe to reduce an amount of heat at the heat source. The heat pipe may be an evaporator-condenser heat pipe. The second end of the heat pipe may be positioned proximate to a first dissipating feature. The heat source may be a power amplifier, waveguide assembly, printed circuit board, or other electronics, and the first dissipating feature may be the exterior wall of the housing.