US Patent 11265380 Radio frequency waveguide system for mixed temperature environments

A system of a machine includes a network of a plurality of nodes distributed throughout the machine, a controller, and a plurality of waveguides. Each of the nodes is operable to communicate through one or more radio frequencies, where the machine includes a cooler portion and a hotter portion. The controller is operable to communicate with the network of nodes using a higher frequency to communicate with one or more of the nodes in the cooler portion of the machine and a lower frequency to communicate with one or more of the nodes in the hotter portion of the machine. The waveguides are configured to guide transmission of the one or more radio frequencies between the controller and one or more of the nodes.