Side Lobe Reflector Layout for Wireless Coverage Expansion
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Solution Overview
Problem
High-frequency wireless communication technologies face challenges in expanding coverage areas due to increased electromagnetic wave loss, which limits communication coverage and requires costly solutions like repeaters or multiple cells, making it difficult to prevent communication shadows in wide areas.
Innovation Solution
The use of a reflector/scatterer, arranged around side lobe beams of transmission antennas, to intentionally adjust and redirect the power ratio and direction of side lobe beams, expanding communication service coverage areas without the need for additional power sources or repeaters, and can be designed in various shapes and materials such as metal, graphene, or with inductive components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If high frequency band is used for wireless communication, then data transmission speed and frequency band width are improved, but electromagnetic wave loss increases and communication coverage area decreases
Solution Approach 1:
The patent converts the harmful side lobe beams, which normally represent wasted energy and reduced coverage, into beneficial extended coverage areas. By placing reflectors/scatterers in the radiation direction of side lobe beams, the patent redirects this otherwise lost electromagnetic energy to expand communication coverage, effectively turning the harm of side lobe energy dissipation into a benefit for coverage expansion.
2Area of stationary object
If output and gain of antenna are increased to expand coverage area, then communication coverage area is improved, but construction and operation costs increase
Solution Approach 1:
The patent introduces reflectors/scatterers as intermediary elements between the transmission antenna and the coverage area. These passive components redirect side lobe beams to extend coverage without requiring additional active transmission equipment, power sources, or complex infrastructure, thereby achieving coverage expansion with minimal increase in device complexity and cost.
3Area of stationary object
If repeater or multiple communication cells are installed to expand coverage, then communication coverage area is improved, but construction and operation costs increase
Solution Approach 1:
The patent uses reflectors/scatterers as passive intermediary devices that redirect existing side lobe energy to extend coverage. This approach avoids the need for active repeaters or additional communication cells, significantly reducing both construction and operation costs while achieving similar coverage expansion effects.
4Area of stationary object
If side lobe beam energy is utilized to expand coverage, then communication coverage area is improved, but beam directionality and focus are worsened
Solution Approach 1:
The patent segments the coverage enhancement function by using multiple reflectors/scatterers positioned at different locations around the transmission antenna. Each reflector handles a specific side lobe beam direction, allowing the system to maintain directionality for each segment while achieving omnidirectional coverage expansion overall. This segmented approach preserves beam focus in specific directions while expanding total 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
This approach effectively expands communication service coverage areas by redirecting side lobe energy, enhancing coverage without increasing operational or construction costs, and can be implemented in various environments by strategically placing reflectors/scatterers around antennas.
Implementation Method 1
a reflector/scatterer arranged around a side lobe beam which is generated from a transmission antenna, in a radiation direction of the side lobe beam
Implementation Method 2
a reflector/scatterer arranged around a side lobe beam which is generated from a transmission antenna, in a radiation direction of the side lobe beam
Data Source
AI summary
Provided is a reflector/scatterer arranged around a side lobe beam which is generated from a transmission antenna, in a radiation direction of the side lobe beam, for use in expanding a communication service coverage area.