| 摘要 |
PURPOSE:To reduce the effect of a multi-path and to attain stable transmission reception by providing a 2nd antenna parted spatially with respect to a 1st antenna and taking the signal of the 2nd antenna non-correlation from the signal of the 1st antenna. CONSTITUTION:The receiver consists of antennas 13, 14, filters 15, 16, amplifiers 17, 18, a delay device 19 and a synthesizer 20 or the like. Then the distance between the antennas 13, 14 is spatially parted by lambda/3 (lambda is a wavelength of a carrier) or over so that an SS reception signal S5(t) from the antenna 13 and an SS reception signal S6(t) from the antenna 14 are almost in non- correlation. Thus, the SS signal received by the antenna 14 reaches an independent reception signal level. For example, a phase difference of a carrier in the correlation spike is 0 deg. (synchronization), the synthesized correlation spike is not almost suppressed. Thus, the effect of the multi-path is reduced and stable transmission reception is attained. |
