Miniaturized Ku full-band satellite antenna array

Abstract

The invention discloses a miniaturized Ku full-band satellite antenna array. The antenna array comprises an antenna body and a feed structure for feeding the antenna body; the antenna body is formed by arranging a plurality of antenna units; each antenna unit comprises an upper dielectric plate, a middle dielectric plate and a lower dielectric plate which are stacked from top to bottom; a radiation patch is printed on the upper surface of the upper dielectric plate; a grounding reflection plate is printed on the lower surface of the lower dielectric plate; a grounding plate is printed on the upper surface of the middle dielectric plate; two horizontal polarization feed microstrip lines with opposite feed directions and two vertical polarization feed microstrip lines with the same feed direction are printed on the lower surface of the middle dielectric plate; a vertical rectangular gap is formed in a position, perpendicular to the end part of each horizontal polarization feed microstripline, of the grounding plate; a horizontal rectangular gap is formed in a position, perpendicular to the end part of each vertical polarization feed microstrip line, of the grounding plate; the two horizontal polarization feed microstrip lines are connected through a horizontal polarization coaxial probe; the two vertical polarization feed microstrip lines are connected through a vertical polarization coaxial probe; and both the horizontal polarization coaxial probe and the vertical polarization coaxial probe are connected with the feed structure. Narrow antenna width and high gain can be obtained.

Description

technical field [0001] The invention relates to wireless communication technology, in particular to a miniaturized Ku full-band satellite antenna array. Background technique [0002] In recent years, with the wide application and rapid development of satellite communication, higher requirements are put forward for the antenna design in satellite communication system. Parabolic antennas are widely used in satellite communication antenna systems in motion, but their profile is high. Microstrip antennas have attracted more and more attention because of their low profile, light weight, easy conformability, easy processing, and diverse feeding methods. However, dual-polarized antennas are difficult to miniaturize the design of antenna arrays due to dual-port feeding. , and the feed network of most microstrip antennas is designed as the microstrip line in the middle layer of the printed board, which makes the antenna loss larger. In addition, some flat-panel dual-polarized anten...

AI Technical Summary

Problems solved by technology

Microstrip antennas have attracted more and more attention because of their low profile, light weight, easy conformability, easy processing, and diverse feeding methods. However, dual-polarized antennas are difficult to miniaturize the design of antenna arrays due to dual-port feeding. , and the feed network of most microstrip antennas is designed as the microstrip line in the middle layer of the printed board, which makes the antenna loss larger

In addition, some flat-panel dual-polarized antennas have a slender shape, but the knife-shaped beam width generated by them is relatively wide, which will cause mutual interference between satellites

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