Rectangular high-efficiency compact antenna radiation field and target scattering test system

Abstract

The invention belongs to the technical field of compact antenna radiation field and target scattering test systems and discloses a rectangular high-efficiency compact antenna radiation field and target scattering test system. The rectangular high-efficiency compact antenna radiation field and target scattering test system is provided with a rectangular high-efficiency compact field feed source anda rectangular shaped reflector, wherein the rectangular high-efficiency compact field feed source is fixed on a fixed bracket; the fixed bracket is connected with a rectangular shaped reflector backbracket and a reflector liftoff angle adjusting bracket through a connecting rod; and the rectangular shaped reflector is arranged on the rectangular shaped reflector back bracket. Field intensity distribution of an emergent field can be well controlled; compared with a traditional non-shaped reflector, the rectangular shaped reflector has the advantages that the array-fed emergent field has a radiation pattern of a rectangular beam and the radiation pattern has a steep falling edge aligned with the edge of the rectangular shaped reflector, so that edge diffraction of the reflector can be moreeffectively eliminated; sawtooth or curling treatment is added to the edge of the reflector, so that level amplitude of a dead zone is reduced; and the emergent field is uniform in amplitude and theefficiency of the dead zone is high and can reach 70%.

Description

technical field [0001] The invention belongs to the technical field of centimeter wave, millimeter wave and submillimeter wave compact antenna radiation field and target scattering test system, and in particular relates to a rectangular high-efficiency compact antenna radiation field and target scattering test system. Background technique [0002] With the rapid development of centimeter wave, millimeter wave and submillimeter wave technologies, the demand for millimeter wave and submillimeter wave antenna testing and the testing of scattering parameters of various targets in millimeter wave and submillimeter wave frequency bands are becoming increasingly urgent. The antenna radiation field test can be divided into far-field test and near-field test. The far-field test is to directly measure the far-field characteristics of the antenna after a certain test distance is met, while the near-field test is to measure the near-field data of the antenna under test, and then The far...

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Problems solved by technology

[0003] In summary, the problems existing in the existing technology are: when the frequency reaches millimeter wave or even submillimeter wave, when constructing the antenna radiation test far field, the test distance is large, the site cost is high, and the construction cost is high; the compact field test system can Effectively solve the problem of large venues, but the efficiency of the traditional single-reflector compact field quiet zone is low, and it is necessary to further improve the efficiency of the single-reflector compact field quiet zone

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