| 摘要 |
PURPOSE:To find out quickly a trouble, error in phase, error in amplitude, error in operation, etc. by installing inside of the element antenna, a coupler and a phase detector. CONSTITUTION:The standard signal from a standard signal source for transmission gets into a distributor and accumulator 4 through a circulator 3 and it is distributed and led to the input terminal 10 of each element antenna. The standard signal that has entered the element antenna 21 from an input terminal 10 is set out to a phase detector 8 through a direction coupler 22 and at the same emitted from an antenna 15 through a phase shifter 11, circulator 12 and amplifier 13. The signal extracted by the direction coupler 22 and 23 is phase- detected by the phase detector 8. Troubles, phase error, amplitude error, erroneous performance, etc. are detected by the output of the phase detector 8. |
