Capacitive-Coupled Antenna Assembly for Compact Multi-Band Coverage
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Solution Overview
Problem
Existing antenna assemblies in electronic devices have limited communication performance and require additional antennas to support multiple frequency bands, leading to increased size, cost, and interference.
Innovation Solution
An antenna assembly with a first and second antenna, each with a radiator and frequency-selective filter circuit, allowing for multiple resonant modes to cover various frequency bands, including capacitive coupling for enhanced performance and reduced interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If additional antennas are added to support multiple frequency bands, then communication coverage is improved, but device size and complexity increase
Solution Approach 1:
The patent applies multi-functionality by enabling a single antenna assembly to operate across multiple frequency bands (first, second, and third bands) through capacitive coupling between radiators. The first radiator and second radiator are coupled via capacitive coupling, allowing the antenna to resonate at multiple frequencies and support diverse communication standards without requiring separate antennas for each band.
Solution Approach 2:
The patent merges multiple antenna functions into a single integrated antenna assembly. The first radiator and second radiator are combined in close proximity with capacitive coupling between them, creating a unified structure that provides multi-band coverage. This consolidation reduces the overall number of antenna components needed in the electronic device.
2Adaptability or versatility
If additional antennas are added to support multiple frequency bands, then communication coverage is improved, but manufacturing cost increases
Solution Approach 1:
The antenna assembly provides universal multi-band coverage through capacitive coupling between the first and second radiators, eliminating the need to manufacture and assemble multiple separate antennas. This single-assembly approach reduces manufacturing steps, assembly complexity, and associated costs while maintaining support for multiple frequency bands.
3Volume of moving object
If antenna size is reduced to save space, then device compactness is improved, but communication performance deteriorates
Solution Approach 1:
The patent utilizes capacitive coupling between the first radiator and second radiator to enable electromagnetic energy transfer in a compact configuration. This coupling mechanism allows the antenna assembly to maintain effective radiating elements for multiple frequency bands without requiring large physical separation between components, thus achieving multi-band performance in a reduced volume.
Solution Approach 2:
The first radiator and second radiator are positioned in close proximity with capacitive coupling, creating a nested-like configuration where both radiating elements coexist in a compact space. This arrangement allows the antenna assembly to provide multi-band coverage while minimizing the overall volume occupied by the antenna structure.
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 achieves improved communication performance across multiple frequency bands with reduced size, cost, and lower insertion loss by utilizing capacitive coupling and selective filter circuits to isolate and enhance radiator usage.
Implementation Method 1
The first antenna is configured to generate at least one resonant mode. The second antenna is configured to generate at least two resonant modes.
Implementation Method 2
At least one of the at least two resonant modes of the second antenna is excited by a capacitive coupling feed between the first antenna and the second antenna.
Data Source
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AI summary
An antenna assembly and an electronic device are provided in the present disclosure. The antenna assembly includes a first antenna and a second antenna. The first antenna includes a first radiator, a first signal-source, and a first frequency-selective filter circuit. The second antenna includes a second radiator, a second signal-source, and a second frequency-selective filter circuit. The first radiator is spaced apart from and coupled with the second radiator. The first signal-source is electrically connected to the first radiator through the first frequency-selective filter circuit. The second signal-source is electrically connected to the second radiator through the second frequency-selective filter circuit. The first antenna is configured to generate at least one resonant mode. The second antenna is configured to generate at least two resonant modes. The at least two resonant modes of the second antenna are configured to cover reception and transmission of an electromagnetic wave signal in a first band, an electromagnetic wave signal in a second band, and an electromagnetic wave signal in a third band. At least one of the at least two resonant modes of resonant modes of the second antenna is excited by a capacitive coupling feed between the first antenna and the second antenna. The antenna assembly in the present disclosure has a relatively great communication effect.