Antenna Module Low-Frequency Grounding Component
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Solution Overview
Problem
Dual antenna modules are susceptible to frequency band changes due to surrounding conductors, limiting design options for devices like smartphones and tablets, which often cannot use metal shells to avoid interference.
Innovation Solution
The antenna module incorporates a grounding plane, high-frequency radiators, and a low-frequency grounding component with specific configurations, including capacitors, to minimize the impact of surrounding conductors, allowing for the use of metal shells in devices like smartphones and tablets.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a dual antenna module is used, then communication functionality is improved, but the operating frequency bands are easily changed by surrounding conductors
Solution Approach 1:
A low-frequency grounding component is introduced as an intermediary element positioned between the first and second high-frequency radiators. This grounding component acts as a mediator that blocks electromagnetic coupling between the two high-frequency radiators, thereby preventing surrounding conductors from affecting the operating frequency bands while maintaining dual antenna communication functionality
2Strength
If metal shells are used in devices, then device strength and appearance are improved, but the antenna module is affected by the metal conductors
Solution Approach 1:
The low-frequency grounding component serves as an intermediary shielding structure that is positioned between the high-frequency radiators and the metal shell. It blocks the harmful electromagnetic interference from the metal conductor while allowing the device to maintain its metal shell structure for strength and appearance
Solution Approach 2:
The grounding component is designed with specific electrical parameters (low-frequency operation, specific impedance characteristics) that differ from the high-frequency radiators. This parameter differentiation allows it to effectively block interference from metal shells at high frequencies while being electrically connected to ground
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This configuration effectively maintains frequency bands despite the presence of conductors, enabling the use of metal shells in electronic devices while providing selective material options for device design.
Implementation Method 1
the first radiating portion extending in the first direction is radiationally coupled with the first coupling portion. The second radiation extending in the second direction is radiationally coupled with the second coupling portion
Implementation Method 2
the first radiating portion extending in the first direction is radiationally coupled with the first coupling portion. The second radiation extending in the second direction is radiationally coupled with the second coupling portion
Data Source
AI summary
An antenna module includes a grounding plane, a first high-frequency radiator, a second high-frequency radiator, and a low-frequency grounding component. The first high-frequency radiator includes a first feeding portion, a first grounding portion, and a first radiating portion. The first grounding portion is coupled to the grounding plane. The second high-frequency radiator includes a second feeding portion, a second grounding portion, and a second radiating portion. The second grounding portion is coupled to the grounding plane. The low-frequency grounding component located between the first and second high-frequency radiators. The low-frequency grounding component includes a third grounding portion which is coupled to the grounding plane, a first coupling portion, and a second coupling portion. The low-frequency grounding component extends from the third grounding portion and extends in a first direction and a second direction of a first axis respectively to form the first and second coupling portions.