Antenna Substrate Layout With Uneven Insulation for Wider Bandwidth
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing antenna systems face challenges in efficiently transmitting high-frequency signals due to sensitivity to loss and interference, particularly in mmWave bands, where signal linearity and transparency are compromised.
Innovation Solution
An antenna substrate design with a thicker insulating distance between pattern layers in the antenna unit compared to the feed unit, allowing for improved insulating performance and increased bandwidth, while maintaining a compact form factor.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a standard insulating distance is used between pattern layers, then the structure is simple and manufacturing is easy, but antenna performance and bandwidth are limited
Solution Approach 1:
The patent applies different insulating layer thicknesses to different functional regions: the antenna unit has a first insulating layer with thickness T1, while the feed unit has a second insulating layer with thickness T2. This local differentiation optimizes antenna performance in the radiation region while maintaining proper signal feeding in the feed region, resolving the contradiction between performance and structural simplicity.
Solution Approach 2:
The substrate is segmented into distinct functional regions (antenna unit and feed unit) with different insulating layer thicknesses. The antenna unit region has a thicker insulating layer for optimal radiation characteristics, while the feed unit region has a thinner insulating layer for efficient signal transmission, allowing each region to be optimized independently.
2Reliability
If the insulating distance between pattern layers is increased, then bandwidth and gain are improved, but the overall size of the antenna module increases
Solution Approach 1:
The thicker insulating layer (T1) is applied only to the antenna unit region where bandwidth optimization is critical for radiation performance, while the feed unit region uses a thinner insulating layer (T2). This localized approach achieves bandwidth improvement without proportionally increasing the overall module volume, as the thickness increase is confined to specific functional areas.
Solution Approach 2:
The patent utilizes the vertical dimension (layer thickness) selectively in different horizontal regions. By varying the insulating layer thickness in the vertical dimension for different functional units, the patent achieves bandwidth enhancement without requiring proportional increases in the horizontal footprint of the antenna module.
3Reliability
If the insulating distance between pattern layers is increased, then gain is improved, but manufacturing complexity increases
Solution Approach 1:
The manufacturing process is optimized by applying different insulating layer thicknesses to different regions. The first insulating layer with thickness T1 is formed for the antenna unit to achieve optimal gain, while the second insulating layer with thickness T2 is formed for the feed unit. This regional differentiation allows gain optimization without requiring complex multi-step manufacturing throughout the entire substrate.
Data Source
AI summary
An antenna substrate and an antenna module including the same are provided. The antenna substrate includes an antenna unit including first and second pattern layers adjacent to each other and disposed on different levels and a first insulating layer providing a first insulating region between the first and second pattern layers, and a feed unit including third and fourth pattern layers adjacent to each other and disposed on different levels and a second insulating layer providing a second insulating region between the third and fourth pattern layers. Each of the first and second pattern layers includes an antenna pattern, and each of the third and fourth pattern layers includes a feed pattern. The antenna unit is disposed on the feed unit. The first insulating region is thicker than the second insulating region.