Capacitively Coupled Antenna Assembly for Multi-Band Resonance
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Solution Overview
Problem
Existing electronic devices face challenges in improving data transmission rates and communication quality due to limitations in supporting multiple frequency bands and resonant modes.
Innovation Solution
An antenna assembly comprising a first and second radiator, with capacitive coupling and matching modules, supports multiple resonant modes including ⅛ to ¼ wavelength modes, enabling efficient coverage of various frequency bands such as GPS, LTE-4G, NR-5G, Wi-Fi, and Wi-Fi 6E, through capacitive coupling and matching modules with adjustable branches and capacitors/inductors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional single-radiator antenna designs are used, then the device structure remains simple, but the number of supported frequency bands and resonant modes is limited
Solution Approach 1:
The patent combines multiple radiators (first radiator, second radiator, third radiator, fourth radiator) with different resonant characteristics into a single antenna assembly. These radiators are capacitively coupled and share common feeding points, allowing the antenna to support multiple frequency bands (GPS, LTE-4G, NR-5G, Wi-Fi, Wi-Fi 6E) simultaneously while maintaining a unified structural framework.
Solution Approach 2:
The antenna assembly is designed to perform multiple functions through its multi-radiator structure. Each radiator can operate independently or in combination with others to support different resonant modes (1/8 wavelength, 1/4 wavelength, 3/4 wavelength modes) across various frequency bands, making the single antenna assembly universally applicable for diverse communication standards.
2Adaptability or versatility
If multiple separate antennas are used to cover different frequency bands, then frequency band coverage is improved, but device complexity and space occupation increase
Solution Approach 1:
Instead of using separate physical antennas for different frequency bands, the patent merges multiple radiators into a single antenna assembly. The first, second, third, and fourth radiators are capacitively coupled and share common feeding structures, enabling multiple frequency bands to be covered within a compact unified structure that occupies significantly less space than multiple separate antennas would require.
Solution Approach 2:
The antenna assembly employs a nested arrangement where multiple radiators are positioned in close proximity with overlapping spatial footprints. The radiators are arranged such that they can be integrated into the device housing with minimal space requirement, as each radiator utilizes different spatial dimensions and coupling mechanisms to achieve frequency band coverage.
3Productivity
If traditional antenna designs are used, then manufacturing processes remain simple, but data transmission rates and communication quality are limited
Solution Approach 1:
The patent combines multiple radiators with capacitively coupled feeding structures into a single manufacturable assembly. The radiators are positioned to share common feeding points and reference grounds, allowing the entire multi-frequency antenna system to be manufactured as an integrated unit or pre-assembled module, reducing overall manufacturing complexity despite the advanced functionality.
Solution Approach 2:
The antenna assembly utilizes parameter optimization in the capacitive coupling structures and radiator dimensions to achieve broad frequency band coverage and high data transmission rates. By carefully designing the coupling capacitances, radiator lengths, and feeding point positions, the system achieves superior communication performance across multiple frequency bands while maintaining manufacturability through standardized design parameters.
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 assembly enhances data transmission rates and communication quality by increasing the number of resonant modes and frequency bands supported, improving bandwidth and throughput, while reducing RF link losses and device complexity.
Implementation Method 1
The first radiator and the second radiator support, under excitation of the first feeding module and the second feeding module, multiple resonant modes, where at least one resonant mode is a 1/8 to 1/4 wavelength mode caused by excitation current of the first feeding module resonating on the second radiator
Implementation Method 2
A first coupling gap is defined between the second coupling end and the first coupling end
Data Source
AI summary
Provided are an antenna assembly and an electronic device. The antenna assembly includes a first radiator, a second radiator, a first matching module, a first feeding module, a second matching module, and a second feeding module. The first radiator has a first ground end, a first coupling end, and a first feeding point. The second radiator has a second coupling end, a second ground end, and a second feed point. A first coupling gap is defined between the second coupling end and the first coupling end. The first matching module is electrically connected between the first feeding point and the first feeding module. The second matching module is electrically connected between the second feeding point and the second feeding module. The first radiator and the second radiator support multiple resonant modes, where at least one resonant mode is a ⅛ to ¼ wavelength mode.