公开(公告)号：JP2003215224A

公开(公告)日：2003-07-30

申请号：JP2002105403

申请日：2002-04-08

Applicant: KOREA ELECTRONICS TELECOMM

Inventor： PYO GIRUSHIKU ,  YUN YONGUN ,  I JONMUN ,  CHE WONGYU ,  KIM BONSUU ,  CHE JEIKU

IPC: H01Q3/06 ,  G01S3/42 ,  G01S7/03 ,  H01Q1/38 ,  H01Q1/40 ,  H01Q3/08 ,  H01Q13/08

Abstract: PROBLEM TO BE SOLVED: To simplify a power transmission and a directivity error detection structure for tracking by using a power transmission and a DC motor which generate small noises and making a tracking speed quicker. SOLUTION: Active modules 120, 130 supply two signals received from array antennas 100, 110 to a power combining portion 140 to combine them. A frequency converter portion 150 supplies a bias from a signal distribution/detection portion 160, and converts a satellite signal into a signal of a frequency band lower than that. The distribution/detection portion 160 distributes the satellite signal received from the converter portion 150, supplies it to a rotary joint 190, receives a tracking signal selection signal from a satellite tracking portion 170 for detecting a tracking signal, and detects the strength of a signal of a desired channel. The control portion 170 carries out satellite tracking algorithm, supplies a control signal for phase transition to the active module 120, and supplies a motor control signal to a power transmission portion 180. COPYRIGHT: (C)2003,JPO