Antenna Device With Reflection Board For Compact Multi-Band Beam Alignment
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Solution Overview
Problem
Conventional antenna devices require a larger volume to align the main beam of different frequency bands in the same direction, which is inefficient in terms of space usage.
Innovation Solution
The antenna device incorporates a first radiator, a second radiator, and a first reflection board, where the first ratio of the first wavelength to the reflection board's length is less than 0.5, and the second ratio of the second wavelength to the reflection board's length is greater than 0.5, allowing the main beam of both radiators to point in the same direction within a smaller volume.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the antenna volume is reduced to fit multiple frequency bands in a small space, then the space efficiency is improved, but it becomes difficult to control the main beam of different frequency bands to point in the same direction
Solution Approach 1:
A reflection board is introduced as an intermediary component between the first and second radiators. This reflection board reflects radio waves from the second radiator (higher frequency band) to change their propagation direction, enabling the main beams of different frequency bands to point in the same direction while maintaining a compact antenna volume. The reflection board acts as a mediator that resolves the spatial conflict between multiple frequency bands.
Solution Approach 2:
The patent utilizes the third dimension (vertical stacking) to arrange radiators at different heights, with the first radiator positioned lower and the second radiator positioned higher. By combining this vertical arrangement with the reflection board that redirects waves horizontally, the patent achieves directional control in a compact volumetric space, effectively using dimensional arrangement to resolve the contradiction.
2Ease of operation
If the antenna volume is increased to allow main beams of different frequency bands to point in the same direction, then the directional control is improved, but the space efficiency deteriorates
Solution Approach 1:
The patent employs a nested arrangement where the first radiator is positioned at the bottom layer and the second radiator is positioned at the top layer, with the reflection board situated between them. This nested, multi-layer configuration allows multiple frequency bands to be integrated in a compact vertical space, achieving good directional control without requiring a large overall antenna volume.
3Device complexity
If conventional antenna configuration is used without reflection board, then the device complexity is reduced, but the ability to control main beam direction in compact space is worsened
Solution Approach 1:
The reflection board serves as a simple yet effective intermediary that redirects radio waves from the higher frequency radiator. This single additional component enables compact multi-band operation with controlled beam direction, adding minimal complexity while achieving significant performance improvement in terms of volume efficiency and directional control.
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 configuration enables the main beam of different frequency bands to be directed in the same direction while minimizing the antenna's volume, outperforming conventional designs by achieving directional control in a compact form.
Implementation Method 1
the first reflection board is located between the first radiator and the second radiator
Data Source
AI summary
An antenna device is disclosed. The antenna device includes a first radiator, a second radiator, and a first reflection board. The first radiator is configured to radiate a first radio wave comprising a first wavelength value. The second radiator is configured to radiate a second radio wave comprising a second wavelength value. The first reflection board is located between the first radiator and the second radiator. A first ratio between the first wavelength value and a length value of the first reflection board is less than 0.5, and a second ratio between the second wavelength value and the length value of the first reflection board is greater than 0.5.