3D Inverted V Antenna for Compact Multi-Frequency Wireless Devices
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Solution Overview
Problem
Conventional wideband antennas face challenges in reducing size, improving efficiency, and controlling radiation patterns and operational frequency, limiting their application in micro-sized wireless communication devices.
Innovation Solution
A three-dimensional antenna design featuring a substrate with a radiator formed by two child radiators in an inverted V-shape, a signal feeding element, and a grounding element, all monolithically composed of a single metal sheet, allowing for adjustable operational frequencies and radiation patterns by varying the angle and height of the radiators.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional wideband antennas are used, then multi-frequency operation is achieved, but antenna size cannot be reduced effectively and manufacturing cost increases
Solution Approach 1:
The patent transitions from conventional planar antenna structures to a three-dimensional configuration by positioning the radiator at a specific height above the substrate. This vertical dimension enables multi-frequency operation through resonant modes while maintaining a compact footprint on the substrate, effectively resolving the contradiction between bandwidth and size.
Solution Approach 2:
The patent achieves multi-frequency operation by adjusting key geometric parameters including the height of the radiator above the substrate, the length and configuration of the radiator elements, and the positioning of feeding points. These parameter variations enable resonance at multiple frequencies without requiring multiple separate antenna structures.
2Adaptability or versatility
If conventional wideband antennas are used, then multi-frequency operation is achieved, but radiation patterns and operational frequency are difficult to control
Solution Approach 1:
The patent employs different radiator configurations at different locations and heights to achieve specific radiation characteristics. By locally optimizing the radiator structure (e.g., varying lengths, positions, and orientations of radiator elements), precise control over radiation patterns and operational frequencies is achieved while maintaining overall compactness.
3Ease of operation
If traditional multi-component antenna construction is used, then assembly flexibility is maintained, but manufacturing complexity and cost increase
Solution Approach 1:
The patent integrates the substrate, radiator, and feeding structures into a unified configuration where the radiator is positioned above the substrate and fed through transmission lines formed on or near the substrate. This merged structure eliminates the need for separate mounting operations and soldering of multiple discrete components, simplifying manufacturing while maintaining design flexibility.
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 design enhances the bandwidth and radiation efficiency of the antennas, improving their performance across multiple frequency bands while reducing manufacturing costs through a single-piece construction that replaces traditional soldering.
Implementation Method 1
a radiator (140), a second radiator (190), a signal feeding element (170), and a grounding element (180)... The first child radiator (1150) and the second child radiator (1160) form an inverted V-shape installed on the substrate (1120)
Data Source
AI summary
A three-dimensional antenna includes a substrate, a radiator, a second radiator, a signal feeding element, and a grounding element. The radiator is installed on the substrate. The radiator includes a first child radiator and a second child radiator. The first child radiator has a first end and a second end. The second child radiator has a first end and a second end, wherein the second end of the second child radiator is coupled to the second end of the first child radiator. The second radiator is coupled to the radiator. The signal feeding element is coupled to the first end of the first child radiator. The grounding element is coupled between the substrate and the first end of the second child radiator. The first child radiator and the second child radiator form an inverted V-shape installed on the substrate.