Antenna low-profile adapter board, adapter method and dual-band common-aperture antenna

Abstract

The invention provides an antenna low-profile adapter board, an adapter method and a dual-band common-aperture antenna. The conductor protrudes upwards to a predetermined height from the top surface of the lower board; the upper board array has conductor perforations that pass through the bottom and top surfaces, and the conductor perforations match the inner conductor and are used for the inner conductor to pass through; the bottom surface of the upper board is provided with a plurality of microstrip wiring slots, There is a microstrip line in the microstrip wiring slot. One end of the microstrip line is connected to a low-frequency connector, and the other end extends to the preset low-frequency antenna feed point along with the microstrip wiring slot. The preset low-frequency antenna feed point is used to connect the low-frequency antenna . The upper and lower plate structures are adopted to effectively integrate the antennas of the two frequency bands with a common aperture. The feed points of the low frequency band antennas are evenly arranged in the feed point array of the high frequency band antennas, the height of the transfer is greatly reduced, and the space is greatly saved. The paths are physically separated by cavities to adapt to the development of radar technology.

Description

technical field [0001] The invention relates to a common-aperture antenna technology, in particular to an antenna low-profile adapter board, an adapter method and a dual-band common-aperture antenna. Background technique [0002] With the development of the times, the application of phased array antennas is becoming more and more popular, and the integration of antenna functions is getting higher and higher, such as radar communication integration, interference guidance integration, multi-band composite guidance, etc. In order to reduce the volume of the system, the antenna needs to be designed with a common aperture, which is equivalent to placing two or more antennas in the area of ​​the original antenna, which will inevitably reduce the distance between the antenna units. According to performance requirements, the antenna may be arranged in a rectangular or triangular array, full or sparse, and the position of the feed interface may also be irregularly arranged. In order ...

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Problems solved by technology

In the existing cable transfer scheme, because the cable utilizes the longitudinal dimension of the antenna, the height of the system is bound to be increased, and due to the poor thermal conductivity of the cable, for a high-power antenna, the heat accumulation on the cable will cause the The temperature is getting higher and higher, the electrical performance and reliability are affected

[0004] Chinese Patent Publication No. CN 109755763 A discloses the S / Ku dual-frequency co-aperture linearly polarized phased array scanning antenna, in which the S-band of the low-frequency band uses a coaxial feeder to directly connect up and down, which limits the position of the TR component. The caliber is limited, and the S-band TR components and the Ku-band TR components cannot be staggered in the lateral direction, thus reducing the space they can use; for higher-frequency millimeter-wave applications, due to the smaller channel spacing, layout And assembly is very difficult, which affects the yield, heat dissipation and reliability, and the filter cannot be placed in the low-frequency antenna. If the filter is placed in the TR component, the utilization space of the TR component will be further reduced; and the Ku-band is used in the The method of vertical transition in the dielectric plate and feeding with stripline coupling, the loss is too large when used in millimeter waves, which reduces the antenna gain and affects the radar detection distance

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