Using RD9481 to form a Doppler effect automatic switching circuit

Relevant key device information applied in this article: RD9481 8050 RD9481 is a dedicated hybrid integrated circuit for microwave object displacement detection. It can accurately detect the movement of objects. Its internal circuit consists of a microwave transceiver circuit, a two-stage strobe amplifier circuit, and a voltage comparator. , composed of state controller, delay timer, blockade timer and reference voltage source, as shown below. The Doppler effect automatic switching circuit is formed using RD9481 as shown in the figure below: