Compact Multi-Band Antenna Layout for Small-Footprint Resonance
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Solution Overview
Problem
Existing antennas struggle to operate efficiently across multiple frequency bands while maintaining a compact size, often requiring large bandwidth or multiple resonant structures that occupy more space.
Innovation Solution
A compact multi-band antenna design comprising a ground plane, a first conductive member, and pairs of second and third conductive members forming resonant structures that resonate at different frequency bands, allowing for efficient operation across multiple frequency bands while minimizing size.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single resonant structure with large bandwidth is used to operate across multiple frequency bands, then the antenna can cover multiple bands, but the Q-factor becomes small and the structure occupies more space
Solution Approach 1:
The antenna is divided into multiple independent resonant structures, each designed to resonate at specific frequency bands. Instead of using a single large bandwidth resonant structure, the patent employs separate resonant elements (first resonant structure for lower bands, second resonant structure for higher bands) that can be independently optimized for size and performance, thereby reducing the overall volume while maintaining multi-band coverage
Solution Approach 2:
The patent utilizes three-dimensional space by positioning resonant structures at different heights above the ground plane and arranging them in vertical and horizontal configurations. This dimensional arrangement allows multiple resonant structures to coexist in a compact footprint, effectively covering multiple frequency bands without increasing the planar area occupied by the antenna
2Adaptability or versatility
If multiple resonant structures are used to operate across multiple frequency bands, then frequency coverage is improved, but the antenna occupies more space
Solution Approach 1:
The patent arranges resonant structures in a nested configuration where smaller resonant elements are positioned within or adjacent to larger ones. The first and second resonant structures are designed to share space efficiently, with their elements arranged to minimize the overall footprint while maintaining electrical independence for multi-band operation
Solution Approach 2:
Multiple resonant structures are positioned at different vertical heights above the ground plane, utilizing the z-dimension to reduce the x-y footprint. This vertical stacking and spatial arrangement allows multiple resonant structures to occupy overlapping or adjacent projections on the ground plane without interfering with each other's electromagnetic fields
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
The antenna achieves efficient operation across multiple frequency bands, including 2.4 GHz and 5.1-7.2 GHz, while maintaining a compact size, thereby addressing the challenges of space occupancy and frequency coverage in existing antennas.
Implementation Method 1
a first conductive member separated from the ground plane; a pair of second conductive members forming, with the first conductive member, a resonant structure sized to resonate at a higher frequency band of the multiple frequency bands
Data Source
AI summary
An antenna is provided for operation across multiple frequency bands. The antenna includes, in order, a ground plane and a first conductive member separated from the ground plane. The antenna also includes a pair of second conductive members forming, with the first conductive member, a resonant structure sized to resonate at a higher frequency band of the multiple frequency bands. The antenna further includes a pair of third conductive members forming a resonant structure sized to resonate at a higher frequency band of the multiple frequency bands. The first conductive member is sized to resonate at a lower frequency band of the multiple frequency bands.