Abstract
Coupling loop interference (CLI) between the transmitting and receiving antennas must be suppressed to achieve a broadcast wave relay in single frequency networks (SFN) for digital terrestrial broadcasting. To avoid this interference, we have been developed and showed the effectiveness of a loop canceller. It becomes a important task to grasp the propagation characteristics of CLI to realize a relay station in SFN. This paper describes the measurement and analysis results of coupling, fluctuation and delay spread of CLI..