| 摘要 |
An antenna system ( 205 ) includes an antenna structure ( 215 ), a receiver ( 220 ), and an antenna system controller ( 225 ). The antenna structure includes an arrangement of antennas ( 237 ), a signal combiner ( 240 ), and a switching matrix ( 235 ). The arrangement of antennas is designed to have a set of antenna element separations that are optimized to provide lowest correlation coefficients of intercepted radio signals for a corresponding set of electromagnetic environment types that vary from a very low density scattering environment to a maximum density scattering environment. The antennas ( 230 ), ( 231 ), ( 232 ), ( 233 ), ( 234 ) in the antenna arrangement each include at least one element that has a common polarization. There is at least one antenna that is a dual polarized antenna. The antenna system selects an antenna element pair that corresponds to the environment type which it is operating and thereby receives a best combined signal.
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