Shared Radiator Antenna Using Split Sub-Radiators for Multi-Band Packing
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Solution Overview
Problem
The challenge in mobile terminal design is to deploy multiple antennas in limited space due to the trend of high screen-to-body ratio and increased camera usage, which reduces antenna clearance and deployment space.
Innovation Solution
A radiator sharing antenna design that utilizes a radiator divided into sub-radiators with multiple feeding points and filter circuits to generate various antenna modes through resonance and parasitic resonance, allowing multiple antenna modes to share the same radiator, reducing space and simplifying the antenna structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If more antennas are deployed to meet communication requirements, then antenna modes increase, but antenna deployment space increases
Solution Approach 1:
The patent applies multi-functionality by enabling a single radiator to support multiple antenna modes (Wi-Fi, Sub 6G, GPS L1, GPS L5) through multiple feeding points and filter circuits. The radiator structure serves universal communication functions across different frequency bands and application scenarios, eliminating the need for separate antennas for each mode.
Solution Approach 2:
The patent merges multiple antenna functions into a single integrated radiator structure. By combining multiple feeding points (first feeding point, second feeding point) and associated filter circuits (first filter circuit, second filter circuit) onto one radiator, the design consolidates what would traditionally require multiple separate antenna elements into a unified structure.
2Device complexity
If traditional antenna structures are used with one feeding point per radiator, then structure is simple, but space occupied by antenna increases
Solution Approach 1:
The patent segments the radiator into functional sub-regions by introducing multiple feeding points at different locations. The radiator is divided into a first sub-radiator and second sub-radiator with a gap between them, allowing independent excitation of different segments through separate feeding points to generate different antenna modes.
Solution Approach 2:
The patent transitions from a single-feeding-point configuration to a multi-feeding-point configuration, adding spatial dimensionality to the antenna structure. By distributing feeding points across different locations on the radiator and using filter circuits to control signal paths, the design exploits spatial arrangement to achieve multiple functions without proportionally increasing overall volume.
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 effectively increases the number of antenna modes without increasing space, reduces the number of feeding points and resonance elements, and allows for compact deployment of antennas like Wi-Fi, Sub 6G, GPS L1, and GPS L5 modes on a single radiator, meeting 5G communication requirements while minimizing antenna size and deployment space.
Implementation Method 1
A radio frequency signal transmitted through the first feeding point generates operating bands in a plurality of different antenna modes through resonance of the first sub-radiator and parasitic resonance of the second sub-radiator
Implementation Method 2
A radio frequency signal transmitted through the first feeding point generates operating bands in a plurality of different antenna modes through resonance of the first sub-radiator and parasitic resonance of the second sub-radiator
Implementation Method 3
One end of the first filter circuit is connected to the first feeding point, and the other end of the first filter circuit is grounded. One end of the second filter circuit is connected to the second feeding point, and the other end of the second filter circuit is grounded
Data Source
AI summary
A radiator sharing antenna and mobile terminal including the radiator sharing antenna includes a radiator divided into a first sub-radiator and a second sub-radiator by a gap, a first feeding point, and a second feeding point. A radio frequency signal is fed through the first feeding point on the first sub-radiator, and a radio frequency signal is fed through the second feeding point on the second sub-radiator. The radiator sharing antenna is adapted to generate a plurality of antenna operating bands through the resonance generated by the first sub-radiator and the second sub-radiator and the parasitic resonance generated through mutual influence between the first sub-radiator and the second sub-radiator.