Multi-band Antenna Structure with Nested Feed Points
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Solution Overview
Problem
Current antenna structures in wireless communication devices are complex and occupy significant space, hindering miniaturization and efficient operation across multiple frequency bands.
Innovation Solution
The antenna structure incorporates a substrate with multiple feed points and electronic elements, along with a housing design that includes radiating portions and feed portions to form loop antennas, enabling efficient radiation across various frequency bands, including LTE-A, NFC, GPS, and Wi-Fi, through strategic current paths and matching elements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional antenna structures are used, then multiple frequency bands can be supported, but the device occupies large space and has complex structure
Solution Approach 1:
The patent combines multiple antenna functions into a single integrated antenna structure that supports multiple frequency bands (LTE, Wi-Fi, Bluetooth, NFC) through a unified design with multiple feed points and resonant elements, eliminating the need for separate antennas for each function and thereby reducing overall device complexity while maintaining multi-frequency capability
Solution Approach 2:
The antenna structure is designed as a universal multi-functional antenna that can operate across multiple frequency bands and support various wireless communication standards simultaneously through carrier aggregation and MIMO techniques, allowing one antenna system to perform the work of multiple specialized antennas
2Adaptability or versatility
If traditional antenna structures are used, then multiple frequency bands can be supported, but the device occupies large space
Solution Approach 1:
The antenna design employs a nested structure where multiple resonant elements and feed points are integrated within a compact housing, with the antenna embedded in the device body rather than extending outward, allowing multiple functional elements to be nested within a small volume while maintaining multi-frequency operation
Solution Approach 2:
The patent utilizes three-dimensional space efficiently by designing the antenna structure that extends in multiple dimensions within the device housing, using vertical and horizontal arrangements of radiating elements and ground planes to achieve multi-frequency support without increasing the device's footprint area
3Volume of moving object
If antenna structure is simplified for miniaturization, then device size is reduced, but radiation efficiency may be compromised
Solution Approach 1:
The antenna structure incorporates local optimization through strategically positioned feed points, matching elements, and ground planes at specific locations within the compact housing, where each local region is designed with specific electromagnetic properties to enhance radiation efficiency at particular frequency bands while maintaining overall compactness
Solution Approach 2:
The patent employs parameter optimization by adjusting the dimensions, positions, and electrical characteristics of antenna elements, feed points, and matching circuits to achieve resonant frequencies and impedance matching that maximize radiation efficiency within the constrained physical space of the miniaturized device
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 design allows for compact wireless communication devices that effectively receive and transmit signals across multiple frequency bands, supporting carrier aggregation and MIMO functions, thereby enhancing miniaturization and performance.
Implementation Method 1
the antenna structure incorporates a substrate with multiple feed points and electronic elements, along with a housing design that includes radiating portions and feed portions to form loop antennas, enabling efficient radiation across various frequency bands
Data Source
AI summary
An antenna structure includes a side frame, a first feed portion, a second feed portion, and a first ground portion. The side frame defines a first gap and a second gap. The side frame is divided into a first radiating portion by the first gap and the second gap. When the first feed portion supplies current, the current flows through a first resonance section and is grounded through the first ground portion to activate a first operating mode and a second operating mode. When the first feed portion supplies current, the current flows through a second resonance section and is grounded through the second feed portion to activate a third operating mode. When the second feed portion supplies current, the current flows through the second resonance section and the first resonance section, and is grounded through the first ground portion to activate a fourth operating mode.