Loop-Structured Compact Antenna for Isotropic 2.4 GHz Radiation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing small antennas for wireless devices, particularly in the 2.4 GHz frequency range, lack isotropic radiation patterns, making them inefficient for uniform data transmission and requiring compact designs that are challenging to manufacture.
Innovation Solution
A compact antenna design featuring an electrically conducting ground structure, a radiator structure, and a feed point, with a second structure forming a loop or U-shape to ensure uniform radiation, and being attached to a dielectric substrate for mechanical stability and reduced frequency interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If a compact antenna design is used to reduce size, then the antenna can be integrated into wireless devices with limited space, but the radiation pattern becomes non-isotropic and uniformity is lost
Solution Approach 1:
The antenna is divided into multiple conductive segments arranged in a specific geometric pattern on the dielectric substrate. Each segment contributes to the overall radiation characteristics, and their collective arrangement creates a more isotropic radiation pattern while maintaining compact dimensions suitable for wireless device integration.
Solution Approach 2:
The antenna design transitions from traditional planar configurations to a multi-dimensional conductive structure on the dielectric substrate. By utilizing spatial arrangement in multiple dimensions and orientations, the antenna achieves improved radiation uniformity across different directions while keeping the overall footprint compact for device integration.
2Volume of moving object
If the antenna is designed for compact size, then it fits into limited device space, but manufacturing complexity increases
Solution Approach 1:
The antenna design integrates multiple functional elements into a unified conductive structure on a single dielectric substrate. By merging the radiating elements, grounding structures, and impedance-matching features into one integrated design, the antenna reduces manufacturing steps and simplifies production while maintaining compact size for wireless device integration.
3Ease of manufacture
If traditional PIFA antenna is used, then manufacturing is simpler, but the radiation pattern is not isotropic and uniformity is poor
Solution Approach 1:
The antenna employs asymmetric conductive segment arrangements and non-uniform geometric patterns on the dielectric substrate. This asymmetric design breaks the directional limitations of traditional PIFA antennas, enabling more isotropic radiation characteristics while maintaining ease of manufacture through standard PCB fabrication 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
The antenna achieves a more isotropic and uniform radiation pattern, reducing size and manufacturing complexity while maintaining efficient signal transmission and reception, even when oriented differently, thus improving battery life and reducing specific absorption rate (SAR).
Implementation Method 1
an antenna for sending and/or receiving electromagnetic signals
Data Source
Figure 1a~1b
Figure 2a~2b
Figure 3a~3b
AI summary
An antenna for sending and/or receiving electromagnetic signals and a method for using an antenna for sending and/or receiving electromagnetic signals. The antenna comprises an electrically conducting ground structure extending along a plane; a first structure forming a radiator, being electrically conducting; a second structure, being electrically conducting; and a feed point for connecting the antenna with a signal line. A first end of the first structure and a first end of the second structure are in electrical contact with each other at the feed point. Further, the ground structure is separated from the feed point by a gap and a second end of the second structure is connected to the ground structure. The second structure comprises a bending portion such that the second structure together with a portion of the ground structure surround an area when seen from a direction orthogonal to the plane of the ground structure.