Patent ID: 7079071
Filing Date: 2006-07-18
Classification: G01S,H03K

Abstract:
1. A radar apparatus, comprising: a modulation signal generating circuit that generates a modulation signal; a carrier wave generating circuit that generates a carrier wave; a modulation circuit that outputs a high frequency signal generated by modulating the carrier wave using the modulation signal that has been inputted; a modulation signal extracting circuit that extracts the modulation signal from the high frequency signal that has been inputted; and a detection signal generating circuit that generates a detection signal, which can be used to measure a distance to a measured object, based on the modulation signal extracted by the modulation signal extracting circuit from a component of the high frequency signal that has been transmitted via a transmission antenna, the component having been reflected by the measured object and received by a reception antenna, wherein the modulation signal generating circuit comprises a sine wave signal generating circuit that generates a sine wave signal and a pulse signal generating circuit that generates a modulation signal by converting the generated sine wave signal to a pulse signal using a step recovery diode.