| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a tracking antenna device and an RF characteristic variation compensation method, capable of compensating phase drift over time at a plurality of transceiver devices each of which operates individually. <P>SOLUTION: A tracking antenna device, for transmitting a transmission RF signal from each antenna of each transmitter with a predetermined phase, includes feedback signal generation and down conversion means for down converting a transmission RF signal with phase drift after frequency up conversion at a transmitter, using a multiplied signal of a reference signal common to a plurality of transmitters, and for generating a feedback signal, and phase drift detection means for detecting relative phase differences among each of antennas yielded by phase drift of feedback signal from each transmitter. A distribution and phase shifting device, for distributing a transmission IF signal into a plurality of transmitters with predetermined input phases, controls each of input phases of transmission IF signals distributed into a plurality of transmitters based on the relative phase difference detected results, and compensates phase drift among each of the antennas. <P>COPYRIGHT: (C)2013,JPO&INPIT |
