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Multilayer micro-strip flat-plate array antenna with symmetric beams

A technology of array antennas and microstrip feeders, applied in antennas, antenna arrays, antenna grounding devices, etc., can solve problems that are difficult to implement, and achieve the effects of eliminating coupling effects, reducing mutual coupling, and good symmetry

Inactive Publication Date: 2012-03-28
中国兵器工业第二〇六研究所
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

The method of adding a matching shielded line can make the radiated power of a single microstrip line significantly smaller than that without a shielded line, but in actual engineering design, this method is often difficult to achieve due to the limitation of the spacing of the radiating elements of the microstrip array

Method used

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  • Multilayer micro-strip flat-plate array antenna with symmetric beams
  • Multilayer micro-strip flat-plate array antenna with symmetric beams
  • Multilayer micro-strip flat-plate array antenna with symmetric beams

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Embodiment Construction

[0016] The content of the present invention will be described clearly and in detail below in conjunction with the accompanying drawings.

[0017] figure 1 is the radiation unit distribution diagram of the radiation layer 11. figure 1 The middle radiation patches 1 are arranged symmetrically on the inner surface of the radiation layer according to the calculation result of the pattern synthesis theory. The radiation patch array is 3×6 with 18 units in total. Screw holes 2 are distributed on the edge of the radiation layer.

[0018] figure 2 It is the coupling slot diagram of the ground plane of the feeding layer 15. This layer is printed on one side of the middle feed layer, and the ground plane 14 of the feed layer 15 is located below the radiation layer. The shape of the coupling slot 6 is "H", and the array of coupling slots is 3×6, 18 in total, and the center of each slot 6 coincides with the center of gravity of the radiation patch 1 . Arrow 3 indicates the polariza...

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Abstract

The invention relates to a multilayer micro-strip flat-plate array antenna with symmetric beams, which consists of a radiation layer, a feeder layer and a reflection plate, wherein radiation patches are symmetrically distributed on an inner surface of the radiation layer, and the radiation patch array is totaled in 18 units of 3*6; the feeder layer is arranged between the radiation layer and the reflection plate, a distance between every two adjacent layers is a quarter wavelength, a grounding surface of the feeder layer is provided with 18 H-shaped coupled gaps in a form of 3*6, a micro-strip feeder line is arranged on the feeder surface of the feeder layer, on a micro-strip feeder-line network, energy is allocated by a first-level power distributor to a second-level power distributor and is opposite to a phase position, finally the energy is allocated to each radiation unit through a serial impedance matching circuit, the reflection plate is a metal plate and forms an inner surface of an antenna shell, the radiation layer also has a function of an antenna cover, and the entire antenna is completely arranged inside a closed shell except a connector.

Description

technical field [0001] The invention belongs to the technical field of antennas, and in particular relates to a multi-layer microstrip plate array antenna with symmetrical beams. During design, the sidelobes of the beams of the one-dimensional serially fed planar array antenna are designed to realize left-right symmetry through feeding. technical background [0002] At present, microstrip array antennas have been widely used in radar, remote sensing, communication and other fields. Single-layer microstrip antennas are valued for their light weight, small thickness, and easy conformation. However, compared with common microwave antennas, microstrip antennas generally have narrow frequency bands and loss, so the gain is not high. When the frequency is constant, the thicker substrate has wider bandwidth and higher gain, and the substrate with smaller dielectric constant has wider bandwidth and higher gain. Since the typical value of the bandwidth of the microstrip antenna is o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/38H01Q1/48H01Q13/08H01Q19/10H01Q21/00
Inventor 董亮汤畅宗耀张军
Owner 中国兵器工业第二〇六研究所
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