Loop Antenna Resonant Wavelength Modification for Compact GPS
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Solution Overview
Problem
The challenge in designing GPS antennas for smartphones is the limited space available, as existing technologies like Patch Antennas, Solid Metal Structuring, and Laser Direct Structuring are costly or inefficient, while Chip antennas require more space and have poor efficiency, making them unsuitable for small, portable devices.
Innovation Solution
The method involves modifying the resonant wavelength of a basic loop antenna by connecting a first antenna radiator to a resonant point and extending its length to generate a resonant frequency compatible with specific communication systems like GPS, without increasing the antenna's physical size or structural cost.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If Patch Antenna is used, then antenna performance is improved, but configuration space requirement increases
Solution Approach 1:
The patent transitions from planar Patch Antenna design to a three-dimensional loop antenna structure that utilizes vertical space. The antenna is integrated into the battery pack housing, transforming the two-dimensional surface into a three-dimensional volumetric structure, thereby improving performance without increasing the device's footprint area.
Solution Approach 2:
The antenna structure serves multiple functions: it acts as both a GPS antenna and a structural component of the battery pack housing. By integrating the antenna into the existing housing structure, the design eliminates the need for separate antenna components, thereby maintaining performance while reducing overall configuration space requirements.
2Reliability
If Solid Metal Structuring or Laser Direct Structuring antenna is used, then antenna performance is improved, but manufacturing cost increases
Solution Approach 1:
The antenna structure utilizes the existing battery pack housing material and manufacturing process. The housing itself serves as the antenna, eliminating the need for separate antenna manufacturing steps such as metal structuring or laser direct structuring. This self-service approach maintains high performance while significantly reducing manufacturing complexity and cost.
Solution Approach 2:
The patent combines the antenna function with the battery pack housing structure into a single integrated component. By merging these two previously separate elements, the design eliminates the need for expensive specialized antenna manufacturing processes while maintaining antenna performance through the conductive properties of the housing material.
3Ease of manufacture
If Chip antenna is used, then manufacturing cost is reduced, but antenna efficiency deteriorates and space requirement increases
Solution Approach 1:
The patent moves away from the planar chip antenna configuration to a three-dimensional loop structure. This dimensional transformation increases the effective electrical length of the antenna within the same physical footprint, thereby improving radiation efficiency and GPS signal reception while maintaining compact form factor suitable for mobile devices.
4Volume of moving object
If antenna configuration space is reduced, then device portability is improved, but antenna design complexity increases
Solution Approach 1:
The antenna design utilizes the battery pack housing which already exists as a structural component. By making the housing serve dual purposes as both structural support and antenna element, the design achieves compact device size without adding complexity. The housing's existing geometry is optimized to provide the necessary antenna characteristics, eliminating the need for additional antenna-specific components or complex integration schemes.
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
This approach allows for a compact GPS antenna design that efficiently operates within the required frequency range, addressing the space constraints and cost issues of existing solutions while maintaining portability and efficiency.
Implementation Method 1
modifying a resonant wavelength of a basic loop antenna, in order for an antenna resonant frequency of a conformed specific communication system to be generated
Data Source
AI summary
An improved method of loop antenna and improved loop antenna thereof are provided, the method is used to generate an antenna resonant frequency for a conformed specific communication by modifying a resonant wavelength of a basic loop antenna. The improved method of loop antenna includes the following steps: connecting a first antenna radiator to a resonant point of the basic loop antenna electrically, and using an additional length from the connected first antenna radiator additional length to increase the resonant wavelength of the basic loop antenna, in order to generate an antenna resonant frequency conformed to the specific communication system.