| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for signal compositing of RF (radio frequency) signals for enhancing strength of composite signals. SOLUTION: Antenna 2a and 2b receive RF signals transmitted from a transmitter. An adder 13 generates the composite signals by compositing each received RF signals. A level detector 14 notifies the strength of the composite signals to a control part 15. The control part 15 determines the phase control value, in response to the change in strength of notified composite signals and a control table 21 to a variable phase shifter 17. The phase shifter 17 shifts the phase of the RF signals by the notified phase control value, and accordingly occurrences of dead points can be suppressed. COPYRIGHT: (C)2003,JPO
|
