| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an orthogonal radar device which decreases a received electric power loss and reduces a polarization wave loss and an interference between radars. <P>SOLUTION: The orthogonal radar device includes an orthogonal signal generator part 101 which generates four signals 0, -90, -180 and -270 degrees in phase, a first coupler module 102 and a second coupler module 103 which input a signal from the signal generator, an antenna part 106 which inputs the signal from each coupler module and inputs the returned signal from the target, a first phase delay module 104 and a second phase delay module 105 which are connected between the first coupler module and the antenna part and delay the phases of the transmission and reception signals into 90 degrees, a leakage signal removal part 110 which removes the leakage signal with combining the input received signals through each coupler module from the antenna part, an electric power distribution part 113 which distributes the output signal in the removal part, mixer parts 115, 116 which mix the signal of the orthogonal signal generator and the output signal of the electric power distribution part. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
