High-density integration tile-type active phased-array antenna structure

Abstract

The invention discloses a high-density integration tile-type active phased-array antenna structure, and aims to provide a high-integration tile-type active phased-array antenna structure which is smaller in volume, lighter in weight, lower in cost and stable in performance and can eliminate a self-excitation phenomena. The structure is realized through the following technical scheme: a radiation array element layer is arranged on an upper multi-layer PCB (2), each metal radiation patch (1) array module is electrically connected to an MMIC chip (5) through a radio-frequency feeder line (4), the MMIC chips are packaged in metal sealed cavities (12) between the upper multi-layer PCB and a lower multi-layer PCB to form the RF feeder layer; each MMIC chip is electrically connected to a channel assembly (7), a power supply assembly (8) and a beam control assembly (9) which are positioned on the lower bottom plane of a multi-layer printed board (3) respectively, and an DC power supply and a control circuit layer are formed by the MMIC chips as well as a radio-frequency external interface (10) and a control and power supply external interface (11) which are arranged at two ends of the bottom of the multi-layer printed board respectively.

Description

technical field [0001] The invention relates to a tile-type active phased array antenna structure widely used in the fields of communication, navigation, identification, measurement and control, early warning detection, precision tracking, broadcasting and television, remote sensing and telemetry, and radio astronomy. Background technique [0002] The phased array antenna is the core part of the phased array system, especially the two-dimensional active phased array antenna, whose integration level determines the performance and cost of the entire system. Although the cost of an active phased array antenna is not the primary factor, the volume, weight and power consumption requirements are very stringent. Active phased array antennas can be roughly divided into brick type and tile type according to the circuit assembly method. The brick-type active phased array antenna can be considered as the first generation product, which has the disadvantages of heavy weight, bulky volu...

AI Technical Summary

Problems solved by technology

These modules still need to be interconnected by radio frequency and low frequency through various connectors. A large number of connectors are required, which is costly. In addition, during the installation process, it is necessary to consider such issues as how to install in position, the insertion and withdrawal force of connectors, etc.

Such an architecture design will undoubtedly increase the weight, volume and cost of the final antenna

In addition, due to the large number of components and parts involved, it is difficult to assemble and produce the complete antenna, so the natural efficiency and yield will not be too high, and the cost will increase accordingly

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