Antenna Component With Segmented Ground Circuit

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Solution Overview

Problem

The design of a metallic back cover as a single antenna to cover whole frequency bands results in poor antenna performance and negatively affects carrier aggregation in electronic devices.

Innovation Solution

An antenna component with two feed circuits and at least one ground circuit connected to an antenna body, where the ground circuit is located between the feed points, forming two separate antennas on the same body to cover the entire frequency range, enhancing performance and supporting carrier aggregation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If the bottom metallic back cover is designed as a single antenna to cover whole frequency bands, then the frequency coverage is improved, but the antenna performance deteriorates

Engineering Contradiction:

Improvefrequency coverageVSAvoidantenna performance

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The patent divides the single antenna into two separate antennas by introducing a ground circuit between two feed points on the metallic back cover. This segmentation allows each antenna to be optimized for specific frequency bands, improving overall antenna performance while maintaining comprehensive frequency coverage through carrier aggregation

Inventive Principle:

Principle #1Segmentation

2Adaptability or versatility

If the bottom metallic back cover is designed as a single antenna to cover whole frequency bands, then the frequency coverage is improved, but the carrier aggregation is negatively affected

Engineering Contradiction:

Improvefrequency coverageVSAvoidcarrier aggregation capability

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

By segmenting the antenna system into two independent antennas with separate feed circuits, the patent enables effective carrier aggregation. Each antenna can be tuned to specific frequency bands, allowing the system to aggregate carriers from different bands without the interference that would occur in a single-antenna design

Inventive Principle:

Principle #1Segmentation

3Reliability

If two feed circuits and ground circuit are added to create separate antennas, then the antenna performance is improved, but the device complexity increases

Engineering Contradiction:

Improveantenna performanceVSAvoidantenna component structure

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The metallic back cover serves multiple functions: it acts as both the housing structure and the antenna radiation element. By utilizing the existing metallic back cover as the antenna body, the patent avoids adding separate antenna structures, thereby improving antenna performance without significantly increasing device complexity

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The patent combines the ground circuit with the metallic back cover structure itself, using the back cover as both the radiating element and the ground reference. This merging eliminates the need for separate ground structures, reducing overall device complexity while maintaining the two-antenna configuration

Inventive Principle:

Principle #5Merging (Combining)

Data Source

PatentUS10498032B2Antenna component and electronic device

Publication Date: 2019.12.03 XIAOMI INC

AI summary

An antenna and an electronic device are disclosed, which relates to an antenna. The antenna component includes an antenna body, two feed circuits, and at least one ground circuit. The two feed circuits are connected to the antenna body through respective feed points. The at least one ground circuit is connected to the antenna body through respective one of ground points, and at least one of the ground points is located between the two feed points.