Patent ID: 7609199
Filing Date: 2009-10-27
Classification: G01S

Abstract:
1. A radar apparatus that transmits a radar wave, receives a reflected wave obtained through reflection of the radar wave off an object, and detects the object from the reflected wave, said radar apparatus comprising: an oscillator that generates a high-frequency signal; a transmission multiplier, made up of a differential circuit for inputting and outputting a differential signal, to which a high-frequency signal divided for transmission from the high-frequency signal generated by said oscillator is inputted as a transmission differential signal which is the differential signal, and which multiplies a frequency of the transmission differential signal by a predetermined multiplication ratio, the differential signal being made up of a positive-side signal and a negative-side signal; a reception multiplier, made up of the differential circuit, to which a high-frequency signal divided for reception from the high-frequency signal generated by said oscillator is inputted as a reception differential signal which is the differential signal, and which multiplies a frequency of the reception differential signal by the predetermined multiplication ratio employed with said transmission multiplier; a transmitter which generates the radar wave from the differential signal obtained through the multiplication by said transmission multiplier; and a receiver which generates a demodulated signal; from the reflected wave, and the differential signal obtained through the multiplication by said reception multiplier.