Passive Relay Antenna Structure for Shielded-Space Communication
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Solution Overview
Problem
Existing technologies face challenges in providing long-distance radio communication between radio wave shielded spaces and the outside due to the limitations of high-frequency radio waves penetrating soil and the need for multiple power supplies, complicating the setup.
Innovation Solution
A passive relay device comprising an internal antenna, external antenna, and connection part that relays wireless communication without requiring a power supply, using directional and non-directional antennas to minimize radio wave attenuation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If high frequency radio waves are used for data transmission, then transmission speed and bandwidth are improved, but penetration capability through soil and structure materials deteriorates
Solution Approach 1:
The patent transitions from direct high-frequency radio wave transmission through shielded structures to a two-stage transmission approach: first transmitting signals to the shielded space using high-frequency waves, then relaying them to the outside using low-frequency waves that can penetrate the structure, effectively adding a spatial dimension to the transmission path
2Length of stationary object
If a relay device is provided to amplify signal strength for long-distance transmission, then transmission distance is improved, but device complexity and power supply requirements worsen
Solution Approach 1:
The patent introduces a passive relay device as an intermediary that receives high-frequency signals from the shielded space and retransmits them as low-frequency signals to the outside, enabling long-distance transmission without requiring active signal amplification or complex power supply systems
Solution Approach 2:
The patent replaces the mechanical/electrical signal amplification system with an electromagnetic field transformation system, where the relay device converts signal frequency rather than amplifying signal power, eliminating the need for power supplies
3Loss of information
If measurement devices are installed inside underground structures, then data collection capability is improved, but installation complexity and maintenance difficulty worsen
Solution Approach 1:
The passive relay device serves as an intermediary that enables communication between measurement devices inside the shielded structure and external systems, allowing data collection without requiring physical access to the interior for installation or maintenance operations
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 highly efficient long-distance wireless communication between radio wave shielded and unshielded spaces with reduced radio wave attenuation, allowing reliable data collection from internal devices to external servers.
Implementation Method 1
an internal antenna which transmits/receives radio waves to/from the internal device
Implementation Method 2
an external antenna which transmits/receives the radio waves to/from the external device
Implementation Method 3
a connection part which connects the internal antenna and the external antenna
Data Source
AI summary
A passive relay device (100) relays radio communication between the inside of a radio wave shielding structure (200) and the outside of the radio wave shielding the structure (200), and the device includes an internal antenna (10) which connects with the inside, an external antenna (20) which connects with the outside, and a connection part (30) which connects the internal antenna (10) and the external antenna (20).