Radar apparatus
First Claim
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.
0 Assignments
0 Petitions
Accused Products
Abstract
A radar apparatus includes a PN code generator for generating a PN code, a variable delay device for delaying the PN code, an oscillator for generating a high-frequency signal, a transmission frequency multiplier for multiplying a frequency of a transmission differential signal obtained by being divided from the high-frequency signal by 3, a reception frequency multiplier for multiplying a frequency of a reception differential signal obtained by being divided from the high-frequency by 3, a transmitter for generating a radar wave by using the differential signal obtained through the multiplication by the transmission frequency multiplier and the PN code generated by the PN code generator, and a receiver for generating an in-phase signal and a quadrature signal from a reflected wave by using the differential signal obtained through the multiplication by the reception frequency multiplier and the PN code delayed by the delay device.
-
Citations
16 Claims
-
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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
-
Specification