Wireless Signal Antenna With Segmented Radiator For WiMAX Bandwidth
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Solution Overview
Problem
Conventional dual-band antennas fail to meet the broad-band requirements of WiMAX, particularly in reducing size to accommodate the increased transmission distance and wider bandwidth, restricting the miniaturization of electronic devices.
Innovation Solution
A wireless signal antenna design featuring a substrate with metal radiator units and a signal transmission line, where the first radiator unit is longer than the second, and both are printed on the substrate with semi-open areas to optimize frequency band modes, including 5 GHz and 2.4 GHz, to reduce overall device volume.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the antenna uses conventional dual-band design with direct feed-in manner, then it can support both high and low frequency bands, but the bandwidth in low frequency band is limited to approximately 200 MHz which does not satisfy WiMAX broad-band requirement
Solution Approach 1:
The antenna divides the radiator into two separate radiator units (first and second radiator units) with different lengths, where the first radiator unit supports high frequency band and the second radiator unit supports low frequency band. This segmentation allows each unit to be optimized for its specific frequency range, enabling the antenna to achieve both dual-band operation and broad-band performance in the low frequency range required by WiMAX
Solution Approach 2:
The patent applies different geometric shapes and configurations to different parts of the antenna structure. The first radiator unit has a specific geometric shape optimized for high frequency operation, while the second radiator unit has a different geometric shape optimized for low frequency broad-band operation. This local quality differentiation allows each region to perform its specific function optimally
2Reliability
If the antenna uses conventional dual-band design, then it can operate at standard frequencies, but the length of the second radiator cannot be further reduced which restricts size reduction of electronic devices
Solution Approach 1:
The patent employs geometric shapes with curved or non-linear configurations for the radiator units rather than simple straight lines. The metal strips or metal microstrips are designed with suitable geometric shapes that allow the effective electrical length to be maintained while reducing the physical footprint, enabling frequency performance without proportionally increasing antenna size
Solution Approach 2:
The antenna structure utilizes three-dimensional spatial arrangement and multi-dimensional geometric configurations. By designing the radiator units with complex geometric shapes that extend in multiple directions and utilize vertical space, the patent achieves the required effective lengths for frequency operation while minimizing the overall planar footprint and device volume
3Productivity
If the antenna increases transmission distance and bandwidth as per WiMAX requirements, then wireless communication quality improves, but the required accommodation space increases which conflicts with device miniaturization
Solution Approach 1:
The patent combines multiple functions into a single integrated antenna structure. Both high frequency and low frequency radiator units are integrated on the same substrate with shared grounding and feed structures. This merging allows the antenna to support WiMAX broad-band requirements and dual-band operation simultaneously without requiring separate antenna elements, thereby reducing the total accommodation space required
Solution Approach 2:
The antenna design achieves multi-functionality by enabling operation across multiple frequency bands (high frequency band and low frequency band) and supporting both dual-band mode and broad-band mode. This universal design allows a single antenna structure to meet diverse wireless communication requirements including WiMAX broad-band demands, eliminating the need for multiple specialized antennas and reducing overall device volume
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 improved bandwidth and reduced size, effectively supporting both high and low frequency bands, enhancing wireless communication efficiency and accommodating the growing demands of wireless communication standards.
Implementation Method 1
The electrical signal is then used to excite the metal radiator element to generate a high frequency band mode and a low frequency band mode
Data Source
AI summary
The invention discloses a wireless signal antenna including a substrate, a grounding element, a metal radiator element, a signal transmission line, and a ground connection part. The metal radiator element includes a first radiator unit, a second radiator unit, and a signal feed-in point. The ground connection part is electrically connected to the signal feed-in point and the grounding element. The first radiator unit is disposed on the substrate and bent to include a first radiator part, a second radiator part, and a third radiator part, wherein at least a part of the first radiator unit is disposed along edges of the substrate. The second radiator unit is disposed between the first radiator unit and the grounding element. The signal transmission line includes a signal line and a ground line respectively connected to the signal feed-in point and a layout area of the grounding element. The signal transmission line receives electrical signals from a signal source and then excites the metal radiator element to generate a first frequency band mode and a second frequency band mode.