Antenna Apparatus With Slit Wing Portions For 5G Polarization
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Solution Overview
Problem
The increasing demand for millimeter wave communications in 5G networks requires antenna apparatuses that can support multiple frequency bands, but physical limitations in mobile devices restrict the mounting of multiple antennas, necessitating a single antenna capable of supporting various frequency bands with different polarization characteristics.
Innovation Solution
An antenna apparatus with a substrate and antenna patterns featuring central and wing portions, where the wing portions are formed by slits and can receive feed signals from multiple vias, allowing for selective phase alteration and polarization characteristics adjustment to accommodate different frequency bands, such as 28 GHz to 38.5 GHz.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple antenna devices are mounted to support various frequency bands, then frequency band coverage is improved, but device space requirements increase
Solution Approach 1:
The patent combines multiple antenna patterns (first and second patterns with different polarizations) into a single antenna device structure. The antenna apparatus includes a substrate with multiple feed vias and multiple antenna patterns disposed on the substrate, allowing one device to support multiple frequency bands and polarization modes that would traditionally require separate antenna devices.
Solution Approach 2:
The single antenna device is designed to perform multiple functions by supporting both first and second polarization characteristics across different frequency bands. The antenna pattern configuration enables the device to operate as both a vertically polarized antenna and a horizontally polarized antenna, providing universal coverage for various 5G frequency bands within one device footprint.
2Area of stationary object
If a single antenna device supports multiple frequency bands, then device space is reduced, but antenna structure complexity increases
Solution Approach 1:
The antenna device is segmented into distinct antenna patterns (first antenna pattern and second antenna pattern) and feed via structures on the substrate. Each antenna pattern is associated with specific feed vias and polarization characteristics, allowing independent optimization of each segment while maintaining overall compactness. The slits in the antenna patterns further segment the structure to control current distribution and polarization.
Solution Approach 2:
The patent utilizes parameter changes in the antenna pattern geometry, including slit configurations, pattern shapes, and feed via positions, to achieve different polarization characteristics and frequency responses. By adjusting these geometric parameters, the single antenna device can support multiple frequency bands with different polarizations without requiring fundamentally different structures for each band.
3Manufacturing precision
If wing portions are physically insulated from feed vias, then manufacturing precision is improved, but electrical coupling difficulty increases
Solution Approach 1:
The patent introduces an intermediary conductive structure or coupling mechanism between the feed vias and the antenna pattern wing portions. This intermediary allows electrical coupling to be achieved while maintaining physical insulation and manufacturing tolerance, as the intermediary can be designed to accommodate alignment variations while ensuring proper electrical connection.
Data Source
AI summary
An antenna apparatus may include: a substrate; two feed vias disposed in the substrate; and an antenna pattern disposed on one surface of the substrate, and including a central portion and wing portions protruding from the central portion. A first wing portion and a second wing portion adjacent to the first wing portion, among the wing portions, may be disposed over the two feed vias. The antenna apparatus may be configured to selectively provide a feed signal to either one or both of the two feed vias.