We have designed and developed a low cost full SMT microwave motion sensor for vehicle alarm systems. This sensor has full RF type approval, and has been qualified to automotive environmental and EMC specifications.

The signal processing electronics of a Doppler signal provides sensor intelligence. The Linwave design group has experience of both discrete and real time embedded solutions in sensor signal processing requirements, and the optimum technology can be provided for the desired application.

The power supply and power supply conditioning also play a vital role in the sensor design especially for automotive applications where low current and transient protection are especially important to ensure correct operation on longevity of the sensor.

The final application of the motion sensor also requires particular experience. The microwave beam shape has to be optimized to the application and significant ‘real life’ testing is normally required to ensure the sensor will perform as required within the given application. This applications knowledge can only be gathered from experience of working with Doppler motion sensors and a full understanding of their specific application problems.