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Multi-bit quantized digital phased array antenna

A digital phased array and antenna technology, which is applied in the directions of antenna arrays, antennas, antenna arrays, etc. that are powered separately, can solve the problems that the beam direction cannot be adjusted, and achieve the goal of reducing profile height, reducing production costs, and reducing cascading losses Effect

Inactive Publication Date: 2020-08-04
南京星腾通信技术有限公司
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Problems solved by technology

Xiamen University's invention patent CN 107565228 A discloses a planned programmable antenna and design scheme based on FPGA control, including a circular radiation patch and a switchable feed network, by controlling the on-off of 7 PIN tubes in the feed network The polarization direction of the antenna can be adjusted, but the beam direction cannot be adjusted.

Method used

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  • Multi-bit quantized digital phased array antenna
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  • Multi-bit quantized digital phased array antenna

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Embodiment Construction

[0047] The present invention is described in further detail now in conjunction with accompanying drawing. These drawings are all simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, so they only show the configurations related to the present invention.

[0048] like figure 1 and 2 As shown, an 8×8 antenna sub-array is taken as an example to illustrate a specific application of the present invention. The 8×8 antenna sub-array can be generally divided into four layers, such as figure 1 As shown, the upper three layers are switching phase shifters, and the bottom layer is the waveguide feeding structure 4 . The phase shifters from top to bottom are 180° phase shift unit layer 1 (180° phase shift layer 1 has a radiation function, also called radiation unit layer, and the radiation unit layer is attached to the linear bias line layer), 90° phase shifter The phase unit layer 2 and the 45° phase shift unit layer ...

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Abstract

The invention relates to a multi-bit quantized digital phased array antenna. The antenna comprises a plurality of antenna sub-arrays arranged in a matrix, and a plurality of feed structure layers arranged under the antenna sub-arrays; each feed structure layer feeds a plurality of adjacent antenna sub-arrays; each antenna sub-array only receives feed of one feed structure layer; the antenna sub-array comprises a 180-degree phase shift unit layer, a 90-degree phase shift unit layer and a 45-degree phase shift unit layer from top to bottom in sequence, and the 180-degree phase shift unit layer and the 90-degree phase shift unit layer as well as the 90-degree phase shift unit layer and the 45-degree phase shift unit layer are connected in sequence through respective metal through hole structures. According to the invention, three switch phase shifters (the radiation layer can realize a phase shift function at the same time) are integrated in an up-and-down stacking and cascading manner, so that 3-bit quantized digital phase control is realized, and the cascading loss is effectively reduced.

Description

technical field [0001] The invention relates to a multi-bit quantized digital phased array antenna, which belongs to the technical field of phased array antennas. Background technique [0002] The rapid development of wireless communication technology has greatly facilitated people's lives, and at the same time stimulated more innovative applications, making people's demand for data services continue to increase. The next-generation mobile communication wireless technology will further combine the terrestrial wireless communication network with the satellite-borne space-based broadband global mobile Internet network to achieve full-area coverage and full-time availability. Among them, the low-orbit (Low Earth Orbit, LEO) satellite constellation has become another important field of wireless communication technology competition among major countries. For example, SpaceX of the United States proposed the Starlink Project, China Aerospace Science and Technology Corporation pro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/50H01Q1/38H01Q3/38H01Q1/48H01Q21/06H01Q21/00
CPCH01Q1/38H01Q1/48H01Q1/50H01Q3/38H01Q21/0006H01Q21/061
Inventor 王鹏程朱劼叶明星王正斌
Owner 南京星腾通信技术有限公司
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