Abstract :
When testing the response of a system under test (SUT) to impinging waves, a standard choice is to rely on locally-plane waves, e.g., generated within an anechoic environment. The free-space paradigm is so deeply ingrained in radio engineers that it is often presented as though it was the only possible solution. Still, anechoic environments, simulated thanks to absorbers, are a poor energy-efficient solution, as most of the radiated power is dissipated into thermal power. Moreover, since only line-of-sight propagation is possible, the source and/or SUT position needs to be mechanically modified as soon as a new direction of arrival is to be tested.
