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planar array antenna

An array antenna, planar technology, used in antennas, antenna arrays, electrical components, etc., can solve problems such as no good solution, antenna resonance frequency bandwidth sensitive to physical deformation of the patch, narrow axial ratio bandwidth, etc.

Active Publication Date: 2020-09-25
AEROSPACE INFORMATION
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, compared with the method of generating circularly polarized waves by using double feeding, single feeding also has the following disadvantages: the axial ratio bandwidth is narrow, and the resonant frequency bandwidth and axial ratio bandwidth of the antenna are relatively sensitive to the physical deformation of the patch
The array antenna is structurally increasing the number of radiators to increase the gain of the antenna, and can obtain the narrow beam width required by the system, but it also causes the generation of many side lobes
[0011] For the above problems, there is no good solution in the prior art

Method used

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Embodiment Construction

[0051] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

[0052] In the following, the structural features and functions and effects of the embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0053] Fig. 1 (a) and Fig. 1 (b) are schematic structural diagrams of a planar array antenna provided by an embodiment of the present invention. The planar array antenna structure can be installed at any angle by using the even number of mounting holes 101 provided around the substrate 100 to fix the exterior structure (housing) and the metal support frame. For the radiation directivity of the overall roadside unit (RSU) microstrip array antenna in a specific direction, ...

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Abstract

The invention relates to the communication field and discloses a planar array antenna. The planar array antenna comprises a substrate, a plurality of radiation devices attached to a first surface of the substrate, and a power divider connected to the plurality of radiation devices through a micro strip. Each radiation device comprises 4 rectangular patch antennas which are connected to each other through the micro strips. The 4 rectangular patch antennas are set to possess 0 degree, 45 degree, 90 degree and 135 degree phase differences. Through the above technical scheme, artificial and additional 0 degree, 45 degree, 90 degree and 135 degree phase differences on an individual radiator of the array antenna is sequentially rotated, and the individual radiator is rotated 45 degree along a direction of a right-hand circular polarization wave. Therefore, even if a center frequency is deviated, a circular polarization wave can be realized according to superposition of polarization waves.

Description

technical field [0001] The present invention relates to the communication field, in particular to a planar array antenna. Background technique [0002] Intelligent transport system (intelligent transport system, ITS) is interspersed with cutting-edge technologies such as electrical appliances, electronics, control, information, communications, computers, automobiles and system technologies related to transportation systems. In order to effectively deal with the increasingly profound traffic problems and effectively improve the mobility, safety and efficiency of the traffic environment, a new traffic system is produced. [0003] ITS improves the utilization efficiency of transportation facilities, relieves traffic difficulties, ensures the smooth flow of roads and the safety of vehicles to reduce traffic accidents, realizes the informatization of public transportation and the automation and informatization of logistics systems, and provides various traffic information collect...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01Q21/00H01Q1/36H01Q1/38
CPCH01Q1/36H01Q1/38H01Q21/00
Inventor 邓海金永斗刘洋
Owner AEROSPACE INFORMATION