| 摘要 |
PURPOSE:To decrease a setting-disable time by applying a frequency offset to one of polarized waves of the orthogonal polarized wave communication system. CONSTITUTION:The oscillation frequency of a local oscillator 11 or 12 is offset within a capture range of a demodulator in advance. For example, when the oscillation frequency of one local oscillator is shifted by nearly 100kHz to that of the other local oscillator, the time requiring the 90 deg. phase rotation is quickened to nearly 10musec in comparison with nearly 1sec without the offset. |
