Broadband dual-polarized micro-strip antenna sub-array with filtering and calibration functions

Abstract

The invention discloses a broadband dual-polarized micro-strip antenna sub-array with filtering and calibration functions, which comprises a radiation layer, a paper honeycomb supporting layer and a functional layer. The functional layer comprises an upper printing plate, a lower printing plate and a lower metal surface. An upper metal surface is arranged on the upper surface of the upper printingplate and etched with H-shaped slots, first H-shaped slots are arranged along the vertical direction of the upper metal surface, and second H-shaped slots are arranged along the horizontal direction.A polarization feed network is arranged on the lower printing plate and comprises T-shaped strip lines and characteristic strip lines, the polarization feed network with the T-shaped strip lines perpendicular to the first H-shaped slots is recorded as a horizontal polarization feed network, and the polarization feed network with the T-shaped strip lines perpendicular to the second H-shaped slotsis recorded as a vertical polarization feed network. Metalized via holes are formed in the lower metal surface, penetrate through the lower printing plate and are symmetrically distributed in the twosides of the polarization feed network. Through the technical scheme in the invention, a dual-polarized broadband micro-strip antenna sub-array with power distribution, filtering and calibration functions is realized.

Description

technical field [0001] The present application relates to the technical field of microwave antennas, in particular to a broadband dual-polarization microstrip antenna subarray with filtering and calibration functions. Background technique [0002] With the rapid development of radar technology, radar detection and imaging technology based on spaceborne platforms has become an important means for military reconnaissance, strategic early warning, civil resource survey, and disaster prediction. have higher requirements. With the continuous increase of space-borne phased array radar's caliber surface, continuous improvement of performance indicators, and more and more equipment, considering its launch based on satellite platforms and the particularity of the space environment, how to control the weight of the radar load and improve the system The level of integration has become a common problem that spaceborne radars urgently need to solve. [0003] The light weight of spacebo...

AI Technical Summary

Problems solved by technology

[0004] In the prior art, spaceborne phased array radar antennas mostly use waveguide slot antennas and microstrip antennas. Among them, waveguide slot antennas have high radiation efficiency, but narrow bandwidth and heavy weight; microstrip antennas are light in weight, but have out-of-band resonance. , weak anti-interference ability

Moreover, the functions of the above two types of antennas are relatively single, which cannot meet the requirements of multi-functionality and high integration of the antenna array.

Images