Low-cost modularized flat electronic scanning antenna

A modular and low-cost technology, which is applied to antenna arrays, antennas, and antenna arrays that are powered separately, can solve problems such as limited circuit layout space, high antenna cost, and refugee use, and achieve improved anti-interference characteristics and reduced processing. Cost, effect of suppressing grating lobes

Active Publication Date: 2021-05-07
UNIV OF ELECTRONIC SCI & TECH OF CHINA
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

However, the biggest challenge faced by the traditional phased array antenna technology and application is that the cost of the antenna is too high, and it is difficult to widely promote it to the civilian field.
With the large occupation

Method used

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  • Low-cost modularized flat electronic scanning antenna
  • Low-cost modularized flat electronic scanning antenna
  • Low-cost modularized flat electronic scanning antenna

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Embodiment Construction

[0024] Such as figure 1 Shown is a low-cost modular electronically scanned array antenna system. Its structure includes a radio frequency signal module, a sub-array-level power distribution network, and multiple modular hexagonal sub-array modules (0). The sub-array splicing method can realize large-scale array design; the RF signal generated by the RF signal module is input to the power division network of the sub-array level to generate multiple RF signals of equal amplitude and phase, under the control of the programmable logic array (FPGA) control circuit , the antenna elements can generate different phase distributions, so that the main beam of the array can be flexibly switched in space.

[0025] Such as figure 2 Shown is a schematic diagram of the modular sub-array structure. Each sub-array (0) adopts a hexagonal aperture structure, and each sub-array integrates 16 array elements (6), a 1-to-16 power division network (3) and a DC bias circuit (6). The structure of t...

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Abstract

The invention provides a phased array design scheme, and particularly provides an effective method for low cost and modularization of a flat phased array antenna. The method mainly comprises the steps of based on an antenna unit integrated with a phase shift function, 16 array elements are placed on a hexagonal aperture in a sparse array layout mode to form a sub-array, and a large-scale array can be realized through modular sub-array splicing. The beneficial effects are that the radiation phase of each antenna unit is directly controlled, two functions of radiation and phase shift of the antenna are realized, grating lobes of a non-overlapping uniform sub-array splicing array can be effectively inhibited, an external phase shifter is omitted, and the processing cost is greatly reduced; phase compensation is realized by adopting a subarray rotation and array element rotation mode, so that the quantized sidelobe level can be effectively reduced; and according to the subarray synthesis technology, a large array can be split into a plurality of small modules, and the processing, assembling and maintenance are facilitated.

Description

technical field [0001] The invention designs a field of phased array design, and especially proposes an effective method for the low-cost modular design of flat panel phased array antennas. Background technique [0002] The phased array antenna is a type of antenna developed from an array antenna. By controlling the phase of the antenna unit through a controllable electronic phase shifter connected to the rear of the antenna, the original direction can be aligned in a certain direction within a few microseconds. The lobe shifts and projects in the other direction. Since the 1960s, phased array antennas began to show a blowout. Since then, phased array technology has been rapidly improved under the research of various countries. Phased array panel antennas have the advantages of low profile, high gain, and flexible beams. With the development of 5G applications and Internet of Things technology, the demand for phased array antennas has increased. However, the biggest challe...

Claims

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Application Information

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IPC IPC(8): H01Q21/06H01Q3/38
CPCH01Q3/385H01Q21/065
Inventor 杨鹏尹璐张飞聂在平
Owner UNIV OF ELECTRONIC SCI & TECH OF CHINA
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