Integrated MIMO Antenna Layout Using Grounding Face Isolation
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Solution Overview
Problem
Current 5G MIMO antenna systems face a conflict between requiring larger dimensions for good performance and smaller dimensions due to space constraints, leading to increased manufacturing and mounting costs or reduced isolation and data throughput.
Innovation Solution
An antenna device with a circuit board integrating multiple antennas on a single small dimension, utilizing an insulating carrier with strategically positioned primary and auxiliary antennas and a grounding unit to achieve high isolation and compatibility with multiple frequency segments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the dimensions of the antennas are increased to improve radiation performance and isolation degree, then the antenna performance is improved, but the mounting space requirement increases
Solution Approach 1:
The patent combines multiple antenna functions (primary antenna for first frequency segment, auxiliary antenna for second frequency segment) into a single integrated antenna device mounted on one circuit board. This merging approach achieves the required isolation degree between primary and auxiliary antennas while maintaining a compact overall mounting footprint, resolving the contradiction between performance and space requirements.
Solution Approach 2:
The patent utilizes three-dimensional spatial arrangement by positioning the primary and auxiliary antennas on different layers or planes of the circuit board structure, with strategic grounding face placement. This dimensional optimization allows adequate isolation distance between antennas without increasing the planar mounting area, effectively resolving the space-performance trade-off.
2Device complexity
If multiple antennas are integrated on a single circuit board to reduce mounting space and cost, then the device complexity is reduced, but the isolation degree between antennas may be compromised
Solution Approach 1:
The patent introduces a grounding face as an intermediary element positioned between the primary and auxiliary antennas on the circuit board. This grounding structure acts as a shielding mediator that electrically isolates the two antennas, maintaining high isolation degree even when both antennas are integrated on the same circuit board, thus resolving the contradiction between integration and isolation.
3Area of stationary object
If the antenna dimensions are reduced to meet space constraints, then the mounting space requirement is satisfied, but the isolation degree and data throughput are reduced
Solution Approach 1:
The patent optimizes the geometric parameters of the antenna structures and their relative positions on the circuit board to achieve maximum isolation within limited space. By carefully adjusting parameters such as antenna length, width, spacing, and grounding face configuration, the design maintains high isolation degree and data throughput capability while meeting compact dimension requirements.
Data Source
AI summary
An antenna device includes an insulating carrier and a first primary antenna having a first feeding-in section, a first auxiliary antenna having a second feeding-in section and a second grounding section, a second primary antenna having a third feeding-in section, a second auxiliary antenna having a fourth feeding-in section and a grounding face which are provided on a face of the carrier. The first primary and auxiliary antennas and the second primary and auxiliary antennas are positioned at two side edges of the carrier which are away from each other. The grounding face is positioned between both the first primary and auxiliary antennas and the second primary and auxiliary antennas. The grounding face is provided with a first grounding section adjacent to the first feeding-in section, a third grounding section adjacent to third feeding-in section and a fourth grounding section adjacent to the fourth feeding-in section.