Antenna Radiation Direction Control via Switch Circuit Gaps
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Solution Overview
Problem
Mobile terminal antennas experience signal fluctuations due to directional characteristics, leading to impaired user experience when the device is held in different directions, as they may not consistently receive the strongest signals.
Innovation Solution
An antenna system comprising a processor and at least two switch circuits arranged on the antenna's side surfaces, which control the on/off states to determine and lock onto the strongest signal direction by scanning radiation directions and adjusting the current flow through the antenna circuit using electromagnetic induction principles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the antenna operates with fixed directional characteristics, then the antenna structure is simple, but the signal reception strength varies when the device is held in different directions
Solution Approach 1:
The antenna system dynamically adjusts its radiation direction by controlling the on/off states of switch circuits in different gaps, allowing the antenna to adapt its orientation to receive signals from different directions optimally
Solution Approach 2:
The processor detects signal strength from multiple radiation directions and uses this feedback information to determine and lock the optimal radiation direction, ensuring consistent strong signal reception
2Reliability
If the antenna continuously scans all radiation directions to find the strongest signal, then the signal reception is optimized, but the energy consumption increases
Solution Approach 1:
The system performs preliminary scanning of multiple radiation directions to identify the optimal direction in advance, then locks onto this direction to avoid continuous scanning and reduce energy consumption during normal operation
Solution Approach 2:
The antenna system automatically detects and locks onto the optimal radiation direction without requiring continuous external control or manual intervention, reducing the energy needed for ongoing signal optimization
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 solution ensures consistent reception of the strongest signal strength from any direction, improving user experience by dynamically adjusting the antenna's radiation direction based on signal strength and user posture changes.
Implementation Method 1
adjusting the current flow through the antenna circuit using electromagnetic induction principles
Data Source
AI summary
An antenna includes an antenna circuit, at least two switch circuits, and a processor. The at least two switch circuits are arranged in at least two gaps of two side surfaces of the antenna circuit. The processor is configured to obtain a plurality of signal strengths received by the antenna circuit from each of a plurality of radiation directions, based on the plurality of signal strengths, determine a first strongest signal strength and a radiation direction corresponding to the strongest signal strength, and lock in a first radiation direction of the antenna circuit in the radiation direction corresponding to the first strongest signal strength. The plurality of radiation directions are formed by controlling on/off states of the at least two switch circuits.