Wireless Device Antenna Directivity Metal Plate Switching
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Solution Overview
Problem
Conventional wireless communication devices with adjustable directional and non-directional antennas face challenges in determining optimal positional relationships, leading to degraded gain and complexity for general users in changing directivity.
Innovation Solution
A wireless communication device featuring a housing with a substrate, an antenna, a metal plate with higher reflectance than the housing, and a detection unit that automatically detects the metal plate's attachment, allowing easy switching between low and high directivity states, and outputting the detection result for control unit operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the positional relationship among director, reflector and radiator is changed to realize different radiation patterns, then the directivity can be adjusted, but the gain is degraded and the operation becomes complex for general users
Solution Approach 1:
The patent extracts the reflector function from the complex multi-component antenna system and implements it through a simple removable metal plate that attaches to the housing. This separates the reflector functionality from the traditional director-reflector-radiator configuration, allowing users to simply attach or remove the plate to change directivity without complex positional adjustments.
Solution Approach 2:
The patent changes the physical state parameter of the reflector from a fixed integrated component to a removable attachment. By changing the reflectance parameter through the presence or absence of the metal plate, the system achieves directivity adjustment without requiring users to understand or execute complex positional relationship changes among multiple antenna elements.
2Adaptability or versatility
If multiple antennas are integrated into one device, then the functionality is enhanced, but the device complexity increases
Solution Approach 1:
The metal plate serves multiple functions: it acts as a reflector to enhance antenna gain, functions as a directivity control mechanism, and serves as a removable attachment for user configuration. This single component performs what would traditionally require multiple separate elements (director, reflector, radiator with complex positional relationships), thereby reducing device complexity while maintaining enhanced functionality.
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
Enables general users to easily change the directivity of the wireless communication device, enhancing antenna gain by up to 3 dB when the metal plate is attached, and simplifies the integration of multiple antennas without requiring multiple reflectors, while automatically adjusting transmission output power.
Implementation Method 1
a metal plate removably attached onto the housing, having reflectance higher than reflectance of the housing
Data Source
AI summary
A wireless communication device includes a housing, a substrate provided inside the housing, an antenna provided on the substrate, a switching unit configured to switch directivity of the antenna between a first state and a second state, a detection unit configured to detect switching of the switching unit, and an output unit configured to output a detection result of the detection unit.