Patent ID: 7515099
Filing Date: 2009-04-07
Classification: G01S,H01Q,H03D

Abstract:
1. A radar system comprising: a transmitter stage which generates a transmission signal, and extracts a leakage signal from the generated transmission signal; a circularly polarized antenna which transmits the transmission signal as a circularly polarized signal, and receives a reflection signal; a polarizer coupled between the transmitter stage and the circularly polarized antenna, which receives the transmission signal from the transmitter stage, outputs the transmission signal to the circularly polarized antenna, isolates the reflection signal received via the circularly polarized antenna from the transmission signal, and outputs the reflection signal; and a receiver stage which receives the reflection signal from the polarizer, receives the extracted leakage signal from the transmitter stage, and converts the received reflection signal into an output signal of a certain frequency using the leakage signal as a switching signal.