Stacked Antenna Ground Plane for Multi-Band Interference Reduction
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Solution Overview
Problem
Existing antenna systems face challenges in efficiently supporting high data rate communication over multiple frequency bands, particularly in providing a compact design that effectively separates and tunes antennas for different frequency ranges without interference.
Innovation Solution
The antenna system incorporates a stacked structure with a first antenna structure acting as a ground plane for a second antenna structure, both electrically coupled to a circuit board via separate or shared conductive paths, allowing for efficient operation across different frequency bands and reducing footprint.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple antennas are used to support high data rate communication over multiple frequency bands, then communication capability is improved, but device size and complexity increase
Solution Approach 1:
The patent implements a nested antenna structure where a first antenna structure is positioned inside or within the spatial envelope of a second antenna structure. The first antenna structure provides a ground plane for the second antenna structure, allowing both antennas to coexist in a compact arrangement. This nesting approach enables multiple frequency band support while minimizing the overall device footprint.
Solution Approach 2:
The patent transitions from planar antenna arrangements to a three-dimensional stacked configuration. The first antenna structure is positioned at a different vertical level (z-dimension) relative to the second antenna structure, with the first structure serving as a ground plane for the second. This dimensional change allows for compact multi-band antenna implementation without increasing the device's planar footprint.
2Area of stationary object
If antennas for different frequency bands are placed close together to reduce footprint, then device size is reduced, but interference between antennas increases
Solution Approach 1:
The patent introduces a substrate or dielectric material as an intermediary between the first antenna structure and the second antenna structure. This intermediary layer provides electrical isolation and prevents direct coupling between the two antennas, thereby reducing interference while allowing them to be positioned in close proximity for compact design.
Solution Approach 2:
The patent separates the two antenna structures into distinct spatial zones with the first antenna structure serving as a ground plane for the second. By segmenting the antenna system into functionally distinct layers (first antenna structure as ground plane, second antenna structure as radiating element), the design achieves frequency isolation and reduces mutual interference while maintaining compact dimensions.
Data Source
AI summary
An antenna system is provided. The antenna system includes a circuit board. The antenna system further includes a first antenna structure and a second antenna structure. The first antenna structure is positioned between the circuit board and the second antenna structure such that the first antenna structure forms a ground plane for the second antenna structure. In addition, the first antenna structure is electrically coupled to the circuit board via a first conductive path. The second antenna structure is electrically coupled to the circuit board via a second conductive path extending through an opening defined by the first antenna structure.