A bandwidth adaptive overlay system

Abstract

The utility model discloses a bandwidth adaptive covering system, including digital attenuator, ADC module, gain fine adjustment module, direct current calibration module, mirror image calibration module, digital down conversion DDC module, variable wideband filter, digital domain switch, digital up conversion DUC module, PLAGC module and DAC module that connect gradually, the DDS generation module that is connected between digital down conversion DDC module and PLAGC module, the AGC module that is connected between gain fine adjustment module and direct current calibration module. The utility model can solve the problem of the source bandwidth change well, and uses low -cost to solve signal detection and bandwidth adaptation, thereby does not influence system performance, also need not disconnect signal.

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