Abstract-In this paper the hybrid integration of an FCC-compliant fifth-order Gaussian derivative impulse generator IC together with a compact ultra-wideband Vivaldi antenna is presented. The setup results in a compact FCC-compliant impulse UWB transmitter. Measurements of the impulse shape in time and spectral domain are shown. With this transmitter a movement detection and the precise measurement of the movement deviation value by a correlation measurement technique is presented. This shows the ability of the UWB radar system to operate as a movement detection sensor. The measurements include a breath rate measurement of a human being.

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Inthis article an impulse based radar systemoperating in the ultra-wideband frequency range between 3.1 GHz and 10.6 GHz is presented. The radar sensor is intendedtobeused in medical diagnostics.Inprinciple the realized radar could be appliedtovarious applications, especially due to the compact overall size and the size of the radar front-ends in particular.One focus of the paper is on adetailed description of the system architecturewith the correlation receiver and the time delay adjustment using a variable phase setting for the trigger signals. Furthermore, the key components of the radar, the monolithically integrated pulse generator and the planar antenna, are explained.The capabilities of the radar and the correlation principle are shown in different validation measurements, where ametal plate is used as an ideal target. In addition, two different methods for movement detection were demonstrated successfully measuring the respiration and the heart beat of atest person.

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