Antenna device, electronic device, and design method of antenna device

By setting an electrical connection point on the ring radiator and connecting it to the ground plane, an excitation mode electric field with equal amplitude and a phase angle difference of 90 degrees is formed, which solves the problem of complex antenna device structure, realizes circular polarization and miniaturization design, and improves positioning accuracy and signal quality.

CN115799813BActive Publication Date: 2026-07-10GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP LTD
Filing Date
2021-09-10
Publication Date
2026-07-10

AI Technical Summary

Technical Problem

In the existing technology, antenna devices have complex structures due to the need to achieve circular polarization design, making it difficult to miniaturize them.

Method used

By setting first and second electrical connection points on the ring radiator and connecting them to the feed and ground plane respectively, first and second excitation mode electric fields with equal amplitude and a phase angle difference of 90 degrees are formed, realizing circular polarization characteristics without the need for additional radiation branches and complex matching networks.

Benefits of technology

It achieves circular polarization performance of the antenna device, while simplifying the structure, supporting miniaturization design, reducing costs, and improving positioning accuracy and signal quality.

✦ Generated by Eureka AI based on patent content.

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    Figure CN115799813B_ABST
Patent Text Reader

Abstract

The application provides an antenna device, an electronic device and a design method of the antenna device. The antenna device is provided with a first electric connection point electrically connected with a feed source and a second electric connection point electrically connected with a ground plane on a radiator. A radiation electric field formed by a first wireless signal transmitted by the radiator can include a first excitation mode partial electric field and a second excitation mode partial electric field with equal amplitudes and a phase angle difference of 90 degrees. The first electric connection point and the second electric connection point are respectively arranged in a first current strong point area and a second current strong point area formed by the first excitation mode partial electric field and the second excitation mode partial electric field on the radiator. Based on this, the antenna device can realize circular polarization design, and the structure of the antenna device is simple and can realize miniaturization design.
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