Baseband amplifier unit and pulse radar device

A baseband amplifier unit to be installed in a pulse radar device which is configured to transmit from an antenna toward an object to be detected in a short distance a transmission pulse wave obtained by modulating a transmission control signal, and to be afterwards switched to a standby mode for receiving a reflected wave from the object to be detected, the baseband amplifier unit comprising:

• a first amplifier which amplifies the reflected wave;
• first switching means for switching the reflected wave to be input to the first amplifier from one of a conductive state and a cut off state to the other state;
• second switching means for switching a signal to be output from the first amplifier from one of the conductive state and the cut off state to the other state;
• and
• control means for outputting a first switch control signal for controlling the first switching means to switch to the cut off state before the transmission control signal rises and to switch back to the conductive state when the transmission control signal falls, and for outputting a second switch control signal for controlling the second switching means to switch to the cut off state before the first switching means becomes the cut off state and to switch back to the conductive state when the transmission control signal falls.