Antenna Selection Controller Impedance Matching Measurement
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Solution Overview
Problem
Wireless communication devices with multiple antennas face challenges in selecting the optimal antenna for efficient communication due to varying locations and orientations, leading to differences in performance even among identical antennas, which can result in call drops and increased power consumption during heavy antenna loading.
Innovation Solution
An antenna system with a measurement device configured to measure complex values indicative of impedance matching for multiple antennas, allowing an antenna selection controller to choose the best-performing antenna based on these measurements, thereby improving impedance matching and reducing call drops and power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple antennas are used in wireless communication devices, then communication reliability and coverage are improved, but antenna selection complexity and power consumption increase
Solution Approach 1:
The patent implements a feedback mechanism where the measurement device continuously monitors impedance matching of multiple antennas, and the controller automatically selects the optimal antenna based on real-time measurements. This closed-loop system resolves the contradiction by automating the selection process, improving reliability through optimal antenna choice while managing complexity through systematic measurement and control.
Solution Approach 2:
The antenna selection system performs self-service by automatically measuring impedance matching and selecting the best antenna without manual intervention. The measurement device and controller work autonomously to optimize antenna performance, reducing the operational complexity for users while maintaining high communication reliability.
2Reliability
If multiple antennas with different locations and orientations are deployed, then signal coverage and communication quality are improved, but impedance matching variability and power consumption increase
Solution Approach 1:
The system performs preliminary impedance matching measurements for all antennas before communication operations begin. By pre-characterizing each antenna's impedance properties and selecting the optimal one in advance, the system avoids power-consuming trial-and-error adjustments during active communication, thus improving communication quality while managing power consumption.
Solution Approach 2:
The patent utilizes impedance matching as a key parameter to evaluate and select antennas. By measuring and comparing impedance characteristics of different antennas, the system identifies the optimal antenna that provides best communication quality with minimum power consumption, effectively managing the trade-off between performance and energy use.
3Loss of energy
If antenna impedance matching is optimized, then power transmission efficiency is improved, but measurement and selection system complexity increases
Solution Approach 1:
The measurement device and controller are designed with multi-functionality, serving both impedance measurement and antenna selection functions within a single integrated system. This universal approach reduces overall system complexity while achieving optimal power transmission efficiency through accurate impedance matching measurements and intelligent antenna selection.
Data Source
AI summary
A systems, methods and apparatus including a plurality of antennas are provided. The antenna system includes a first antenna, a second antenna, and a measurement device. The measurement device is configured to measure at least a first complex value indicative of an impedance matching of the first antenna and a second complex value indicative of an impedance matching of the second antenna. The antenna system includes an antenna selection controller configured to select one of the first antenna and the second antenna. The antenna selection controller making the selection based on the measurement of the first complex value of the first antenna and the measurement of the second complex value of the second antenna.