| 摘要 |
PURPOSE:To omit an amplitude equalizer from a transmitting circuit device which equalizes the delay distortion and amplitude distortion of a filter by connecting a delay equalizer which is variable in transmission loss to the filter. CONSTITUTION:The delay equalizer consisting of secondary bridge T types in three sections is connected to a BPE1. Then, resistances 6 and 7 are interposed in the 1st section 6-1 and resistances R8 and R9 are inserted in the 2nd section to adjust the amount of attenuation of the delay equalizer to a specific value. Thus, the transmission characteristics 7-1 of the delay equalizer are made opposite to the transmission characteristics 7-2 of a BPF1 to equalize the delay distortion and amplitude distortion, flattening the transmission characteristics. Thus, the amplitude equalizer is omitted from the transmitting circuit device which consists of the filter, delay equalizer, and amplitude equalizer conventionally. |
