Nested Antenna Radiators for 5G Space Constraints
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Solution Overview
Problem
The challenge in developing antenna modules for User Equipment (UE) is to accommodate multiple frequency bands within a limited space, especially in 5G NSA applications, where the addition of layout space conflicts with the demand for small clearance and high screen ratios, leading to substantial space occupation by the antenna module.
Innovation Solution
The antenna module incorporates a first radiator with an opening that houses a second radiator, allowing the second radiator to transmit and receive wireless signals of a different frequency band without occupying additional internal space, utilizing spatial isolation and switch components to manage different frequency bands, and includes impedance matched networks and an isolating layer to enhance performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple frequency bands are supported in 5G NSA applications, then the frequency band coverage is expanded, but the layout space required increases
Solution Approach 1:
The patent implements a nested antenna structure where the second radiator (for second frequency band) is positioned inside the opening of the first radiator (for first frequency band). This nesting arrangement allows multiple frequency bands to be supported while occupying minimal layout space, directly resolving the technical contradiction between expanded frequency band coverage and reduced layout space requirements
2Adaptability or versatility
If a second radiator is added inside the opening of the first radiator, then the frequency band support is expanded, but the space occupation increases
Solution Approach 1:
The second radiator is nested inside the opening of the first radiator, utilizing the available space within the first radiator's structure. This nesting approach enables support for multiple frequency bands while minimizing the overall volume occupied by the antenna module, effectively resolving the contradiction between expanded frequency band support and reduced space occupation
3Adaptability or versatility
If spatial isolation is used to manage different frequency bands, then the frequency band differentiation is improved, but the device complexity increases
Solution Approach 1:
The nested configuration provides natural spatial isolation between the first and second radiators, with the second radiator positioned inside the opening of the first radiator. This spatial arrangement enables frequency band differentiation through physical separation while maintaining a relatively simple overall structure, resolving the contradiction between improved frequency band differentiation and reduced device complexity
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 configuration enables the antenna module to support an expanded frequency band with reduced overall space usage, improving the utilization of UE space and maintaining satisfactory radiation efficiency and return loss performance.
Implementation Method 1
The first feed point is configured for transmitting a wireless signal of a first frequency band. The second feed point is configured for transmitting a wireless signal of a second frequency band.
Implementation Method 2
an isolating layer to enhance performance
Data Source
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Figure 5~6
AI summary
The antenna module (12) includes: a first radiator (101) having an opening (102); a second radiator (103) located inside the opening (102), the second radiator (103) being provided spaced apart from the first radiator (101); a first feed point (104) located on the first radiator (101), the first feed point (104) being configured for transmitting a wireless signal of a first frequency band; and a second feed point (105) located on the second radiator (103), the second feed point (105) being configured for transmitting a wireless signal of a second frequency band. The second frequency band differs from the first frequency band.