Low-Profile Antenna Layout With Tilted Phase Shifter
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Solution Overview
Problem
Conventional antenna structures face challenges in miniaturization due to large cross-sectional height and electromagnetic interference between the feeding network and radiating elements, which affects performance.
Innovation Solution
The feeding network and radiating elements are disposed on the same surface of the reflection panel at an included angle, reducing the cross-sectional height and minimizing the projection area of the phase shift apparatus to reduce electromagnetic interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of stationary object
If the feeding network is disposed on the same surface of the reflection panel as the radiating element, then the cross-sectional height of the antenna structure is reduced, but the area of the phase shifter increases causing electromagnetic interference
Solution Approach 1:
The phase shifter is rotated by 45 degrees relative to the reflection panel, changing its orientation from a planar layout to a tilted configuration. This dimensional change reduces the projection area of the phase shifter on the reflection panel surface, thereby reducing the area where induced currents are generated and minimizing electromagnetic interference while maintaining the compact cross-sectional height
2Device complexity
If the phase shifter is laid flat on the reflection panel, then the feeding network can be integrated on the same surface, but the projection area of the phase shifter becomes large increasing electromagnetic interference
Solution Approach 1:
The phase shifter is positioned at a 45-degree angle relative to the reflection panel instead of being laid flat. This angular positioning reduces the projection area of the phase shifter on the panel surface, thereby reducing the induced current area and electromagnetic interference, while still maintaining the integrated feeding network configuration on the same surface
Data Source
AI summary
Embodiments of this application provide an antenna apparatus, an antenna system, and a communication device. The antenna apparatus includes a reflection panel, a first feeding network, and a first radiating element. Both the first feeding network and the first radiating element are located on a first surface of the reflection panel, and the first radiating element is electrically connected to the first feeding network. The first feeding network includes a phase shift apparatus, and the phase shift apparatus is disposed at an included angle with the reflection panel. The antenna apparatus has a small cross-sectional height, to facilitate miniaturization development of the antenna apparatus; and has good antenna performance.