Cascaded FMCW radar with synchronized PLL

A cascaded FMCW radar comprising:

• a crystal oscillator generating a reference frequency signal having low-frequency characteristics;
• a cascade-array transceiver chip generating an output signal having high-frequency characteristics using the reference frequency signal through a signal generator provided therein, the cascade-array transceiver chip including one master transceiver chip and at least one slave transceiver chip connected to the one master transceiver chip;
• an antenna transmitting the generated output signal to an outside in a form of an electromagnetic wave or receiving the electromagnetic wave from the outside;
• and
• an RF transmission line designed as a low-frequency line connecting the crystal oscillator, the one master transceiver chip, and the at least one slave transceiver chip,
• wherein the reference frequency signal is directly transmitted from the crystal oscillator to the one master transceiver chip and the at least one slave transceiver chip through the low-frequency RF transmission line, and is simultaneously input to the one master transceiver chip and the at least one slave transceiver chip, and
• wherein the reference frequency signal is input to the signal generator of the at least one slave transceiver chip and modulated into the output signal having high-frequency characteristics.