Planar broadband wide-angle scanning phased-array antenna unit and phased-array antenna

A phased array antenna and wide-angle scanning technology, which is applied in the field of antennas, can solve problems such as limiting the working bandwidth and affecting standing wave performance, and achieve the effects of eliminating resonance points, improving standing wave performance, and high engineering application value
CN112615143AActive Publication Date: 2021-04-06CHINA ELECTRONIC TECH GRP CORP NO 38 RES INST
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHINA ELECTRONIC TECH GRP CORP NO 38 RES INST
Publication Date
2021-04-06

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Abstract

The invention discloses a planar broadband wide-angle scanning phased-array antenna unit and a phased-array antenna. The planar broadband wide-angle scanning phased-array antenna unit comprises an upper dielectric substrate, a middle dielectric substrate, a bottom dielectric substrate, a metal ground and a radio frequency connector which are arranged from top to bottom, wherein periodically arranged matching rings are arranged on the upper surface of the upper dielectric substrate; a butterfly-shaped dipole is printed on the upper surface of the middle-layer dielectric substrate; a decoupling metal strip is arranged on the upper surface of the bottom dielectric substrate, decoupling metal through holes are formed in the two ends of the decoupling metal strip respectively, and the decoupling metal through holes penetrate through the bottom dielectric substrate to be connected with the metal ground and the decoupling metal strip. The radio frequency connector inner core passes through the metal ground, the bottom dielectric substrate and the middle dielectric substrate and is connected to the butterfly-shaped dipole. The short circuit metal through hole passes through the bottom dielectric substrate and the middle dielectric substrate and is connected to the butterfly-shaped dipole. The decoupling metal strips and the decoupling metal through holes are introduced, resonance points in an antenna band are eliminated, and the standing wave performance of the antenna during wide-angle scanning in the working bandwidth is improved.
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Description

technical field

[0001] The invention relates to the technical field of antennas, in particular to a planar wide bandwidth angular scanning phased array antenna unit and a phased array antenna. Background technique

[0002] Phased array antennas are widely used in radar systems due to their outstanding performance and flexible working methods. With the in-depth application and development of technology, not only the requirements for its radiation characteristics such as broadband and wide-angle scanning have been greatly improved, but also for its application environment. In environments with severe vibrations such as wings and fuselages, it is still necessary to ensure the reliability and stability of the phased array antenna. As a result, planar phased array antennas laminated by multi-layer dielectric boards are gradually gaining favor, and the choice of dielectric board materials that are insensitive to temperature and high stability makes this type of unit form availabl...

Claims

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