Rotatable Antenna Elements for Polarization Diversity
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Solution Overview
Problem
Existing antenna devices face limitations in communication quality due to restricted installation positions, which hinder the effectiveness of polarization diversity technologies when attached to actuators.
Innovation Solution
The antenna device incorporates a first and second antenna element with rotatable covers and protruding cylinders, allowing the included angle between them to be adjusted, enabling optimal communication environments by rotating the rotary cylinders around their respective axes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the antenna device is externally attached to the actuator, then the antenna device can be installed on the actuator, but the installation position is limited and communication quality deteriorates
Solution Approach 1:
The patent makes the antenna element rotatable around the protruding cylinder axis, transforming a static antenna structure into a dynamic one. This rotation capability allows the antenna to dynamically adjust its orientation to optimize communication quality while maintaining adaptability to limited installation positions on the actuator.
Solution Approach 2:
The patent introduces rotational freedom around the protruding cylinder axis, adding a new dimensional degree of freedom to the antenna installation. This allows the antenna element to be oriented in different directions (azimuth adjustment) while maintaining the same installation position, thereby improving communication quality without requiring additional installation locations.
2Device complexity
If the antenna element orientation is fixed, then the device structure is simple, but polarization diversity effectiveness is limited
Solution Approach 1:
The patent implements a rotatable antenna element that can change its orientation around the protruding cylinder axis, transforming the fixed-orientation structure into a dynamic adjustable one. This enables the system to achieve polarization diversity by rotating the antenna to different angular positions, improving communication reliability without requiring multiple fixed antennas.
3Ease of manufacture
If the antenna device is placed in a limited position, then the installation is simple, but communication quality improvement through diversity technologies is severely limited
Solution Approach 1:
The patent makes the antenna element rotatable around the protruding cylinder axis, allowing dynamic adjustment of the antenna orientation. This enables the system to achieve diversity gain by rotating the antenna to optimal positions while maintaining the simplicity of single-position installation on the actuator.
Solution Approach 2:
The patent adds rotational freedom around the protruding cylinder axis, introducing a new dimensional degree of freedom. This allows the antenna to be oriented in different directions from the same installation position, effectively transforming a single-position limitation into a multi-orientation capability that improves communication quality.
Data Source
AI summary
The present application discloses antenna device including first and second antenna elements which communicate radio waves; housing which stores processor for processing signals in response to the radio waves; first and second element covers for storing first and second antenna elements, respectively. First element cover includes first rotary cylinder, which is held by housing and rotatable around first rotational axis, and first protruding cylinder, which protrudes from first rotary cylinder, first rotary cylinder protruding from housing along first rotational axis. Second element cover includes second rotary cylinder, which is held by housing and rotatable around second rotational axis, and second protruding cylinder, which protrudes from second rotary cylinder, second rotary cylinder protruding from housing along second rotational axis. First included angle between first and second protruding cylinders storing first and second antenna elements is changed by rotation of at least one of first and second rotary cylinders.