| 摘要 |
PURPOSE:To make it possible to compensate low frequency band amplitude characteristic to improve the transmission quality of TV signals, etc., by performing a prescribed delay before and after the amplitude limiting of relay input signals. CONSTITUTION:Element 108 having the primary-inclination delay characteristic is inserted after amplitude limiter LIM101, and the combination of this delay characteristic and the AM-PM conversion coefficient of a transmission part is selected to compensate the deterioration of low frequency band amplitude characteristic which is generated in a relay. At this time, since the primary inclination characteristic is given to the main signal 4 side when interrupt signal 10 is generated from transmission local oscillator 103, element 107 having a delay characteristic opposite to equalizer 108 is inserted before LIM101. As a result, input signal 4 of transmission frequency transducer 102 has a flat delay characteristic, and the delay inclination dependent upon the coupling between the main signal and the interrupt signal is eliminated. |
