Antenna reflective surface passive intermodulation test device

Abstract

The invention discloses an antenna reflective surface passive intermodulation test device. The antenna reflective surface passive intermodulation test device comprises a simulation platform and a feedsource mounting plate, wherein the feed source mounting plate is arranged above the simulation platform, the feed source mounting plate is equipped with N emission feed sources and M reception feed sources, the M is not smaller than 1, the N is not smaller than 1, the emission feed sources are uniformly distributed at the center area of the feed source mounting plate, at least one reception feedsource is distributed at the center area of the feed source mounting plate, other reception feed sources are uniformly distributed at periphery of the feed source mounting plate, the emission feed sources and the reception feed sources are kept at intervals, and signal transceiving and isolation are realized. The antenna reflective surface passive intermodulation test device is advantaged in thatthe emission feed sources are laid at multiple points, the power radiated to the antenna reflective surface can be satisfied to the maximum degree to satisfy test requirements, multi-point layout of the reception feed sources is realized, and passive intermodulation (PIM) signals generated by the antenna reflective surface are guaranteed to receive to the maximum degree in different directions.

Description

technical field [0001] The invention relates to a passive intermodulation test device for an antenna reflection surface, and belongs to the technical field of testing. Background technique [0002] With the development and application of multi-beam antennas, the technology of transmitting and receiving sharing is applied to large-scale antenna reflector antennas. Passive intermodulation technology is a difficult point to continue to pay attention to and overcome. At present, universities and research institutions at home and abroad have carried out a lot of theoretical research. [0003] For the first ground mobile communication satellite independently developed by China, in addition to the multi-beam communication mode, it also uses the technology of sending and receiving. For satellites, multi-carrier passive intermodulation has become an important indicator that needs to be verified during development. [0004] Passive-Intermodulation (PIM) refers to the combination of ...

AI Technical Summary

Problems solved by technology

[0009] The technical problem of the present invention is: to overcome the deficiencies of the prior art, to provide a passive intermodulation test device for antenna reflectors, especially a passive intermodulation test device for large antenna reflectors, to solve the problem of testing large antenna reflections in the prior art. In the plane passive intermodulation (PIM) test, the transmission power is large and the PIM performance requirements are high, and the test system is difficult to implement.

Images