Antenna Module Layout With Side Dielectric for Higher Gain
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Antenna devices in portable terminals face challenges in achieving improved antenna gain and directivity, particularly in terms of passband width and gain, due to limitations in existing antenna configurations.
Innovation Solution
The antenna module incorporates a dielectric substrate with a higher dielectric constant dielectric body covering the side surfaces of the radiating elements, which guides the electric field towards radio wave radiation, enhancing antenna gain and directivity by positioning the power feeding lines offset from the center of the radiating elements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If a conventional planar antenna configuration is used, then the device structure remains simple, but the antenna gain and directivity are insufficient
Solution Approach 1:
The patent changes the dielectric constant parameter by introducing a dielectric body with higher dielectric constant than the substrate. This parameter change concentrates the electric field in the vertical direction, thereby improving antenna gain and directivity without fundamentally altering the planar antenna structure
Solution Approach 2:
The dielectric body acts as an intermediary element between the radiating element and the surrounding space. It mediates the electric field distribution by concentrating field lines in the vertical direction, which improves radiation efficiency and antenna performance without requiring complex structural modifications
2Power
If the power feeding line is connected at the center of the radiating element, then the feeding is symmetric, but the electric field distribution is not optimized for radiation
Solution Approach 1:
The patent introduces asymmetry in the feeding configuration by connecting the power feeding line to an offset position on the radiating element rather than the center. This asymmetric feeding, combined with the dielectric body, creates optimized electric field distribution that enhances vertical radiation while maintaining manageable feeding structure
3Power
If the dielectric body with higher dielectric constant is added, then the electric field is concentrated in the radiation direction, but the manufacturing process becomes more complex
Solution Approach 1:
The patent achieves improved peak gain by changing the dielectric constant parameter through the addition of a dielectric body. This material parameter change concentrates electric field lines in the vertical radiation direction, enhancing antenna performance
Solution Approach 2:
The patent uses composite material structure by combining the substrate material with an additional dielectric body material having different dielectric properties. This composite approach allows optimization of electromagnetic performance while using conventional materials and manufacturing techniques
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 strengthens the antenna gain and improves directivity by concentrating the electric field in the direction of radio wave radiation, resulting in increased peak gain and expanded frequency band width.
Implementation Method 1
The dielectric constant of the dielectric body is higher than the dielectric constant of the dielectric substrate
Data Source
AI summary
An antenna module has a substrate, a radiating element disposed in or on the substrate, a power feeding line, and a dielectric body. The substrate has a rectangular shape including first and second sides adjacent to each other. The power feeding line extends in a normal direction of the substrate and transfers radio frequency signals supplied from an RFIC to the radiating element. The dielectric body is disposed on a side surface of the substrate. The power feeding line is coupled to the radiating element at a position offset from the center of the radiating element in a first direction toward the first side. The dielectric body is disposed so as to cover the side surface of the substrate including the first side. The dielectric constant of the dielectric body is higher than the dielectric constant of the substrate.