Stacked Antenna Layout for Compact Multi-Band Mounting
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Solution Overview
Problem
Conventional antenna devices are large in volume, making them difficult to mount in electronic products, and require redesigning for different inner spaces, increasing manufacturing costs.
Innovation Solution
An antenna device design featuring a stacked configuration with a second substrate and radiation portion composed of multiple radiation components, along with a recessed exciting portion, to reduce size while maintaining signal frequency bands.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If conventional antenna device designs are used, then the antenna can maintain applicable signal frequency bands, but the device becomes large in volume and difficult to mount in electronic products
Solution Approach 1:
The patent transitions from a planar antenna layout to a three-dimensional stacked configuration. The radiation portion is divided into multiple components arranged in different spatial layers, with some components extending in opposite directions from a central axis. This vertical stacking approach reduces the horizontal footprint while maintaining the electrical performance and frequency band coverage, enabling compact integration into modern electronic devices with limited space.
2Adaptability or versatility
If antenna devices are redesigned for different inner spaces, then mounting suitability is improved, but design time and manufacturing cost increase
Solution Approach 1:
The patent creates a universal antenna structure with a modular stacked design that can be adapted to various electronic device form factors. The radiation portion consists of multiple components that can be selectively activated or configured to suit different mounting environments. The exciter structure with its specific geometric features (concave and convex points at oblique angles) provides a standardized interface that maintains electrical performance across different implementations, eliminating the need for complete redesigns for different products.
3Volume of moving object
If antenna device size is reduced, then mounting ease is improved, but maintaining signal frequency band coverage becomes difficult
Solution Approach 1:
The radiation portion is segmented into multiple distinct radiation components (first, second, third, and fourth radiation components) arranged in a stacked configuration. Each component contributes to different aspects of the frequency band coverage, allowing the antenna to maintain broad spectral coverage despite the reduced overall size. The segmentation also enables independent optimization of each component's geometry and positioning to maximize radiation efficiency across the target frequency ranges.
Solution Approach 2:
The antenna employs a composite structural approach combining multiple radiation components with different geometries and orientations, along with a specially designed exciter structure. The exciter features concave and convex points arranged at oblique angles, creating a composite feeding structure that efficiently couples energy to all radiation components. This composite design ensures robust frequency band coverage while maintaining compact dimensions.
Data Source
AI summary
An antenna device includes a first substrate, a second substrate, a radiation portion and an exciter. The second substrate is stacked on the first substrate. The exciter is disposed on the first substrate and includes a feeding transmission portion, an exciting portion, a connection portion and an impedance match portion. The feeding transmission portion is connected to a side of the exciting portion. The exciting portion and the impedance match portion are connected to two opposite sides of the connection portion, respectively. The radiation portion is located on the second substrate and includes a first radiation component, a second radiation component and a third radiation component. The first radiation component is disposed at a side of the second radiation component. The first radiation component and the second radiation component are disposed at a side of the third radiation component.