Omni-directional Antenna Horizontal Beam Adjustment via Tilt Sensor
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Solution Overview
Problem
Omni-directional antennas installed at an inclination experience reduced performance due to altered radiation patterns, leading to decreased wave gain and increased reflected waves, compromising their omni-directionality and communication efficiency.
Innovation Solution
A horizontal beam adjusting method and apparatus that generates a switch control signal based on the antenna's inclination relative to the ground surface, adjusting the radiation direction by short-circuiting or opening switches, utilizing a tilt sensor to calculate the inclination and determine the necessary switch control signals, and incorporating parasitic elements and impedance matching units to optimize radiation patterns.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the omni-directional antenna is installed on an inclined surface, then the installation flexibility is improved, but the radiation direction becomes sloped with respect to the ground surface, reducing wave gain and increasing reflected waves
Solution Approach 1:
The patent applies dynamics by making the antenna system adjustable rather than fixed. The radiation direction is dynamically adjusted using a tilt sensor to detect inclination and a control unit to activate switching elements that reconfigure the antenna elements, allowing the system to adapt to different installation conditions while maintaining optimal performance
Solution Approach 2:
The patent changes the electrical parameters of the antenna system by using switching elements to alter the impedance and coupling between antenna elements. Based on the detected inclination angle, the control unit switches between different configurations to compensate for the inclined installation, effectively changing the radiation pattern parameters to maintain horizontal omnidirectionality
2Adaptability or versatility
If the radiation direction is inclined with respect to the ground surface, then the antenna can be installed on various surfaces, but the wave gain in the horizontal direction is reduced and reflected waves increase
Solution Approach 1:
The patent implements feedback by using a tilt sensor to continuously monitor the inclination angle of the antenna installation and feeding this information back to the control unit. The control unit processes this feedback and adjusts the switching elements accordingly to compensate for the inclination, ensuring that the radiation pattern maintains optimal horizontal wave gain regardless of installation angle
Solution Approach 2:
The antenna system performs self-adjustment by automatically detecting its own inclination through the tilt sensor and self-correcting the radiation pattern through the control unit's activation of switching elements. This self-service mechanism eliminates the need for manual adjustment or external intervention to optimize performance
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
Minimizes performance reduction and enhances communication functionality by maintaining a horizontally omni-directional radiation pattern with respect to the ground surface, even when the antenna is installed at an inclination.
Implementation Method 1
obtaining a gravity value of each axis using a tilt sensor, and calculating the inclination of the antenna using the obtained gravity value of each axis
Implementation Method 2
adjusting a radiation direction of the antenna according to the switch control signal... adjusting the radiation direction of the antenna to be inclined toward the at least one short-circuited switch
Data Source
AI summary
A horizontal beam adjusting method and apparatus for an omni-directional antenna are provided. The horizontal beam adjusting apparatus may generate a switch control signal according to an inclination of the omni-directional antenna, and adjust a radiation direction of the omni-directional antenna according to the switch control signal. Accordingly, the adjusted radiation direction may have horizontal omni-directionality with respect to a ground surface.