Angle-Switched External Antenna for Router Dead Spot Reduction
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Solution Overview
Problem
Traditional external antennas for 4G/5G/Wi-Fi routers are limited by a single radiation pattern, leading to dead spots in reception quality when adjusted for different angles.
Innovation Solution
An antenna device with a body containing a processor and sensor, and an external antenna with a switchable first and second antenna, allowing the processor to adjust the radiation pattern based on the antenna's angle relative to the body.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a traditional external antenna with a single radiation pattern is used, then the device structure is simple, but dead spots appear in reception quality when the antenna is adjusted to different angles
Solution Approach 1:
The antenna system is segmented into multiple independent antenna elements (first antenna and second antenna), each producing a different radiation pattern. The switch selectively connects different antenna elements based on the antenna's physical angle, ensuring that the appropriate radiation pattern is active for each orientation, thereby eliminating dead spots while maintaining manageable structural complexity through modular design.
Solution Approach 2:
The antenna system dynamically switches between different radiation patterns based on the physical angle of the external antenna. The sensor detects the antenna angle and triggers the processor to switch between the first and second antennas via the switch component, allowing the radiation pattern to adapt dynamically to the antenna's orientation and eliminate reception dead spots.
2Reliability
If multiple antennas with different radiation patterns are added to eliminate dead spots, then reception quality improves, but the device complexity increases
Solution Approach 1:
The external antenna structure serves multiple functions: it acts as a mechanical support, an antenna element, and a sensor trigger. The same physical antenna structure can produce different radiation patterns by switching between the first and second antennas, eliminating the need for separate antenna assemblies for different orientations and reducing overall device complexity.
Solution Approach 2:
The system uses the antenna's own physical angle to automatically trigger the appropriate radiation pattern. The sensor mounted on the antenna detects its own orientation, and the processor automatically switches between antennas based on this self-detected information, eliminating the need for external control systems and reducing device complexity.
3Reliability
If the antenna angle is fixed to optimize reception in one direction, then reception quality is maximized in that direction, but the system cannot adapt to different spatial positions
Solution Approach 1:
The system changes the radiation pattern parameter based on the antenna's physical angle. By detecting the angle and switching between different antenna elements with different radiation patterns, the system adapts the electromagnetic radiation characteristics to match the physical orientation, maintaining optimal reception quality across various spatial positions without requiring physical repositioning.
Data Source
AI summary
An antenna device includes a body and at least one external antenna. The body includes a processor and a sensor electrically connected to the processor. The processor is configured to receive a sensing signal from the sensor. The external antenna is externally connected to the body at an adjustable angle, and includes a first antenna, a second antenna, and a switch. The switch is electrically connected to the processor, and is switchably electrically connected to the first antenna and the second antenna. When the sensor senses that the external antenna is at a first angle or a second angle relative to the body, the processor switches the switch electrically connected to the first antenna or the second antenna according to the sensing signal, so that the external antenna has a first radiation pattern or a second radiation pattern.