| 摘要 |
PURPOSE:To acquire phase synchronization between a PN code and a PNM code in a reception signal at all times by providing an adjustment means on at least one of correlation devices and adjusting the means so that the gain balance between the devices is made identical. CONSTITUTION:This circuit is provided with transformers 16, 17 being adjusting means arranged before and after the band pass filter 7 of a 1st correlation device 3 and similarly with transformers 18, 19 being adjusting means arranged before and after the band pass filter 8 of a 2nd correlation device 4. The adjusting means are used to adjust the 1st and 2nd correlation devices 3, 4 so that the gain balance is made identical. Thus, unbalanced gain between the two correlation devices is avoided and the phase synchronization between a PN code and a PNM code in a reception signal is taken at all times. |
