Passive intermodulation distortion measurement apparatus in communication satellite payload

摘要

1. The art that the claimed invention ; The invention relates to a passive intermodulation distortion will signal measuring device in a communication satellite payload ; 2. SUMMARY ; invented to solve this The present invention, communication repeaters and bus structures consisting of transmit and receive antennas and combine satellite communication payloads in communication between the repeater and the signal combiner and the output signal combiner for detecting antenna input RF signal is inserted to the manual intermodulation distortion signal detected in the general EMC measurement facilities without additional equipment for passive intermodulation passive intermodulation in a communications satellite payload for the measurement of the distortion signal to be intended to provide the distortion signal measurement device . ; 3. Solution subject matter of the invention ; The present invention, in the passive intermodulation distortion signal measuring apparatus of a communications satellite payload, generating a frequency signal corresponding to each channel of a satellite repeater, the generated frequency signal It means for generating an input signal and outputs the synthesized; For inputting a composite signal that is input from the input signal generating means to said satellite transponder to be measured, a first switch for switching the control of the Commission transceiver, the synthesized signal by combining the input from the input signal generation means It means for injecting an input signal including an input coupler for inputting the satellite repeater; It is used to extract a signal output from the satellite transponder, and the output coupler to detect the signal output from the satellite transponder, the distortion signal extraction means including a second switch for switching under the control of the Commission transceiver; And a distortion signal comprising a measurement means for receiving a signal extracted from the output coupler of the distortion signal extracting means for analyzing the channel characteristics. ; 4. An important use of the invention ; The present invention used to fight like a communications satellite payloads.