Electromagnetic Wave Diffraction Structure for Obstacle Bypass
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Solution Overview
Problem
In mobile communication systems, the short wavelengths and high loss of electromagnetic waves, combined with shielding effects from obstacles like buildings and furniture, lead to communication dead zones and inferior coverage, which are costly to address with dense deployments of base stations.
Innovation Solution
A system comprising a substrate with transmission units and antennas, where the antennas are positioned to receive and re-transmit electromagnetic waves around obstacles, using spoof surface plasmon polaritons transmission lines to minimize radiation loss and maintain phase coherence, allowing the waves to bypass obstacles effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If more base stations or boosters are deployed to improve coverage, then communication dead zones are reduced, but implementation cost and maintenance complexity increase significantly
Solution Approach 1:
The patent introduces a diffraction device as an intermediary component that enables electromagnetic waves to bypass obstacles through diffraction. This mediator allows signal propagation around buildings and obstacles without requiring additional base stations in dead zones, thereby improving coverage while avoiding the complexity of dense network deployment
Solution Approach 2:
The patent replaces the mechanical approach of deploying physical base stations with an electromagnetic field-based diffraction solution. Instead of adding more transmitting antennas mechanically, the system uses diffraction structures to guide and bend electromagnetic waves around obstacles, substituting a field-based mechanism for a hardware deployment approach
2Loss of energy
If traditional transmission lines are used, then structure is simple, but radiation loss is high and phase coherence is poor
Solution Approach 1:
The patent employs composite transmission line structures combining conductive elements with dielectric materials to create spoof surface plasmon polaritons transmission lines. This composite approach enables controlled electromagnetic wave propagation with reduced radiation loss and maintained phase coherence, overcoming the limitations of simple traditional transmission lines
Solution Approach 2:
The patent modifies the transmission line parameters by introducing periodic structures and varying geometric dimensions to support spoof surface plasmon polaritons modes. These parameter changes transform the transmission line characteristics to achieve lower radiation loss and better phase coherence while managing the increased structural complexity
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
The system significantly increases the power throughput of electromagnetic waves beyond obstacles, achieving a power gain of up to 100 times and maintaining the original wave's transmission angle, thereby reducing communication dead zones and improving coverage without the need for extensive base station deployment.
Implementation Method 1
using spoof surface plasmon polaritons transmission lines to minimize radiation loss and maintain phase coherence
Implementation Method 2
System and method for diffraction of electromagnetic wave
Data Source
AI summary
A system for diffraction of an electromagnetic wave includes a substrate, a transmission unit, and a plurality of antennas. The substrate is made of a second medium. The transmission unit is disposed on the substrate. The transmission unit has a plurality of transmission lines. Each of the transmission lines has a transmission line length that is associated with a first medium operation wavelength that is associated with an operation frequency. The transmission lines are connected successively. The antennas are disposed on the substrate, respectively.