Reflector Beamforming for Multi-Frequency Direction Control
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Solution Overview
Problem
Existing multibeam antenna systems become complex and costly when performing beamforming for multiple signals with different frequencies, requiring numerous dividers, power amplifiers, and phase shifters.
Innovation Solution
A radio wave control system that includes transmission means for transmitting signals with different frequencies, a reflector device with periodically disposed antenna elements for beamforming, and control means for electrically controlling the phases of the signals to direct beamforming in different directions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If beamforming of multiple signals with different frequencies is performed using conventional multibeam antenna, then directional control of radio waves is achieved, but device complexity increases due to requiring numerous dividers, power amplifiers, and phase shifters
Solution Approach 1:
A single reflector device with periodically disposed antenna elements performs beamforming for multiple signals with different frequencies simultaneously. The reflector device is configured to receive multiple input signals and output beamformed signals in different directions, eliminating the need for separate divider, power amplifier, and phase shifter components for each frequency.
Solution Approach 2:
Multiple functional components (dividers, power amplifiers, phase shifters) that were previously required for each frequency are merged into a single integrated reflector device. The antenna elements are periodically disposed to handle multiple frequencies, combining the functions of multiple separate systems into one unified structure.
2Ease of manufacture
If multiple communication service providers share the same base station infrastructure, then installation cost is reduced, but it becomes difficult to form appropriate communication areas for each provider
Solution Approach 1:
The reflector device segments the communication area by directing different frequency signals in different directions. Each communication service provider can be assigned specific frequency bands that are beamformed toward their respective coverage areas, allowing multiple providers to share infrastructure while maintaining distinct service regions.
Solution Approach 2:
Different regions of the reflector device's radiation pattern are optimized for different frequency signals. The antenna elements are periodically disposed to create direction-specific beamforming characteristics, allowing each communication provider to receive optimized signal quality in their designated coverage area.
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 beamforming of multiple signals with different frequencies using a simple configuration, reducing the complexity and cost of the system while maintaining effective directional control of radio waves.
Implementation Method 1
a reflector device configured to reflect or transmit the first signal and the second signal in periodically disposed antenna elements and perform beamforming of the first signal and the second signal in respectively different directions
Data Source
AI summary
The objective is to provide a radio wave control system, which is capable of performing beamforming of a plurality of signals having different frequencies with a simple configuration. A radio wave control system according to the present disclosure includes a transmission apparatus (10) that transmits a first signal having a first frequency and a second signal having a second frequency, a reflector device (20) that reflects or transmits the first signal and the second signal in periodically disposed antenna elements and perform beamforming of the first signal and the second signal in respectively different directions, and a control apparatus (30) that controls directions in which beamforming of the first signal and the second signal is performed by controlling phases of the first signal and the second signal by electrically controlling the antenna elements.