A Broadband Dual-Polarized Microstrip Antenna Subarray with Filtering and Scaling Functions

Abstract

The application discloses a broadband dual-polarized microstrip antenna sub-array with filtering and calibration functions, including a radiation layer, a paper honeycomb support layer and a functional layer, the functional layer includes: the upper surface of the upper printed board is provided with an upper metal surface , etched with "H"-shaped slits, the first "H"-shaped slits are arranged along the vertical direction of the upper metal surface, and the second "H"-shaped slits are arranged along the horizontal direction; the lower printed board is provided with polarization feed Network, including "T" stripline and characteristic stripline, "T" stripline and the first "H" shaped slot perpendicular to the polarization feed network, denoted as horizontal polarization feed network, and the second "H" If the "shaped gap is vertical, it is recorded as a vertical polarization feed network; metallized via holes are provided on the metal surface of the lower layer, and the metallized via holes pass through the lower layer printed board and are symmetrically distributed on both sides of the polarized feed network. Through the technical solution in this application, a dual-polarized broadband microstrip 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...

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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.

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