Patch Antenna Isolation Structure for Closely Spaced Layouts
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Solution Overview
Problem
Patch antennas closely spaced in a limited space experience signal interference, affecting their performance.
Innovation Solution
The antenna apparatus includes isolation areas between antenna structures to isolate wireless signals, enhancing the isolation degree between them.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If two patch antennas are closely spaced in a limited space, then the space utilization is improved, but the wireless signals radiated by the two antennas interfere with each other, deteriorating the antenna performance
Solution Approach 1:
The patent introduces an isolation structure as an intermediary element positioned between the first and second antenna structures. This isolation structure includes a ground layer, dielectric layer, and metal layer that together form a barrier to block electromagnetic signals between the antennas, thereby reducing interference while maintaining close spacing for better space utilization
Solution Approach 2:
The isolation structure is segmented into multiple functional layers: a ground layer for signal reference and shielding, a dielectric layer for insulation and signal isolation, and a metal layer for electromagnetic shielding. This segmentation allows each layer to perform its specific function in reducing signal interference while maintaining the overall compact antenna design
2Object-affected harmful factors
If an isolation structure is added between antenna structures, then the signal interference is reduced, but the device complexity increases
Solution Approach 1:
The isolation structure is merged with the antenna substrate structure, where the ground layer, dielectric layer, and metal layer are integrated into a unified multi-layer configuration. This merging approach allows the isolation function to be achieved without requiring separate standalone components, thereby reducing overall device complexity while maintaining effective signal isolation
Solution Approach 2:
The isolation structure serves multiple functions simultaneously: it provides electromagnetic shielding between antennas, acts as a reference ground plane for antenna operation, and provides mechanical support and structural stability. This multi-functionality reduces the need for additional separate components, thereby managing device complexity while achieving effective interference reduction
Data Source
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AI summary
Disclosed in the present application are an antenna apparatus and a terminal device. The antenna apparatus comprises: a first antenna structure, which comprises a first radiation area and a first isolation area connected to the first radiation area; and a second antenna structure, which is arranged spaced apart from the first antenna structure, wherein the first isolation area is located between the first radiation area and the second antenna structure, and is used for isolating a wireless signal radiated by means of the first radiation area from a wireless signal radiated by means of the second antenna structure.