  Next generation microwave communications systems face several challenges,
particularly from congested communications frequencies and complex propagation
environments. Taking inspiration from the Yagi-Uda antenna, we present, and
experimentally test, a framework based on the coupled dipole approximation for
designing structures composed of a single simple emitter with a passive
disordered scattering structure of rods that is optimised to provide a desired
radiation pattern. Our numerical method provides an efficient way to model, and
then design and test, otherwise inaccessibly large scattering systems.
