Window-Mounted Transparent Antenna Housing for Indoor EM Shielding
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Solution Overview
Problem
The deployment of small cells for 5G network densification is hindered by challenges such as finding suitable locations, high costs of outdoor fiber and electricity installation, and urbanistic regulations, while existing solutions fail to effectively manage back radiation and electromagnetic field exposure.
Innovation Solution
A communication system featuring a transparent open container with a metallic-based material on its back and lateral sides, housing a transparent antenna system and an installation interface panel, positioned at defined distances from the window to optimize radio-frequency signal transmission and reduce back radiation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the antenna system is installed in front of glazing to provide outdoor coverage, then the transmission efficiency through the window is improved, but the back radiation and reflected energy cause increased electromagnetic field exposure inside the building
Solution Approach 1:
The container is divided into different zones: a first portion (back side) facing the antenna to manage back radiation, and a second portion (front side) facing the window to manage reflected energy. Each zone can be independently configured with appropriate materials or structures to address specific radiation issues without affecting the other.
Solution Approach 2:
The container acts as an intermediary structure between the antenna system and the indoor environment. It intercepts and manages both the back radiation from the antenna and the reflected energy from the window, preventing harmful electromagnetic fields from entering the building while allowing the antenna to maintain its outdoor coverage function.
2Loss of energy
If a metallic element is placed over the antenna system to reduce back reflection from the glazing interface, then the reflected energy is reduced, but the back radiation from the antenna itself is not addressed
Solution Approach 1:
The container is divided into different zones: a first portion (back side) facing the antenna to manage back radiation, and a second portion (front side) facing the window to manage reflected energy. Each zone can be independently configured with appropriate materials or structures to address specific radiation issues without affecting the other.
Solution Approach 2:
Different portions of the container can have different properties or configurations optimized for their specific functions. The back side can be designed to absorb or redirect back radiation, while the front side can be optimized to manage reflected energy from the window, allowing each region to address its specific radiation challenge effectively.
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 configuration enhances effective isotropic radiated power towards the desired direction while minimizing unwanted radiation behind the container, allowing for seamless integration and reduced electromagnetic field exposure, thus facilitating network densification and aesthetic urban integration.
Implementation Method 1
a part of its radiated power towards the glazing is reflected back from the interface of the air and the glazing
Implementation Method 2
the total backward electromagnetic field emission due to the back radiation of the antenna system and the reflection of the radiated energy from the interface of the air and the glazing is limited
Data Source
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AI summary
The present invention discloses a communication system comprising a window, a transparent open container comprising a back side and at least two opposite lateral sides; the back side and the lateral sides comprise a metallic-based material. The communication system comprises a transparent antenna system radiating at a defined range of wavelengths and an installation interface panel. The communication system further comprises a fixing means configured to attach the antenna system and the installation interface panel inside the transparent open container and configured to attach the antenna system and the interface layer in front of the window, the antenna system is placed between the back side and the installation interface panel at a defined distance, Daw (Daw > 0), from the window, the installation interface panel is placed a defined distance, Diw (Diw ≥ 0), from the window.