Patent ID: 7567206

Claim:
An integrated circuit for measuring at least one of a distance and a velocity of an object, comprising: a high-frequency signal generating device for generating a first HF (high frequency) signal having a predefined frequency and a predefined modulation curve from at least one LF (low frequency) signal; a diplexer device at least configured to separate or to mix signals of different frequencies, wherein the diplexer device is coupled to the high-frequency signal generating device, and wherein the diplexer device is additionally configured to determine a frequency offset between the first HF signal and a reflected second HF signal; a transceiver device coupled to the diplexer device and configured for sending the first HF signal and receiving the reflected second HF signal, the reflected second HF signal being a function of the predefined modulation curve of the first HF signal and a distance to a reflecting object; and an adapter device coupled between the diplexer device and the transceiver device, the adapter device adapting an impedance of the transceiver device to the predefined frequency of the first HF signal; wherein the HF signals are RF (radio frequency) signals and the LF signal is a digital word.