RF Rectenna Wireless Vehicle Powering
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Solution Overview
Problem
Current vehicle propulsion systems rely heavily on fossil fuels, leading to environmental concerns, limited energy choices, and eventual resource depletion, with existing alternatives failing to offer the convenience and efficiency of modern internal combustion engines while eliminating fossil fuel reliance.
Innovation Solution
A system that uses radio frequency (RF) signals transmitted from antennas embedded in the roadway to power vehicles equipped with rectennas, converting RF energy into DC power to charge batteries and propel the vehicle, offering a continuous and efficient power source without the limitations of conductive or inductive systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If fossil fuels are used for vehicle propulsion, then high energy density and fast refueling time are achieved, but environmental pollution and carbon dioxide emissions increase
Solution Approach 1:
The patent replaces the internal combustion engine system with an electromagnetic propulsion system. The rectenna receives RF energy and converts it to electrical power, which then drives an electric motor instead of a combustion engine, eliminating exhaust emissions while maintaining propulsion function
Solution Approach 2:
The patent changes the energy transmission parameter from chemical energy (fossil fuels) to electromagnetic energy (RF signals). By transmitting power wirelessly through RF generators and receiving through rectennas, the system eliminates the need for chemical combustion while providing continuous power to the vehicle
2Object-generated harmful factors
If electric-powered vehicles are used, then fossil fuel dependence is reduced, but reliance on conductive or inductive power systems with limited mobility is created
Solution Approach 1:
The patent replaces conductive or inductive power transmission systems with a wireless RF-based power transmission system. The rectenna receives electromagnetic energy directly through the air, eliminating the need for physical contact with power rails or close proximity to inductive coils, thereby restoring full vehicle mobility
Solution Approach 2:
The patent introduces RF waves as an intermediary medium for power transmission. Instead of requiring direct physical or near-field electromagnetic coupling, the system uses RF signals that can penetrate through air and even road surfaces, enabling wireless power transfer without compromising vehicle movement freedom
3Ease of operation
If inductive power systems are used, then wireless power transmission is achieved, but precise and close spacing requirements limit practical application
Solution Approach 1:
The patent transitions from near-field inductive coupling (requiring precise spatial positioning in three dimensions) to far-field RF transmission (where power can be received over larger distances without precise alignment). The rectenna can receive RF energy from generators positioned in the road surface below, eliminating strict spacing and alignment constraints
Solution Approach 2:
The patent makes the power transmission system universal by using RF frequencies that can penetrate through various media including air, road surfaces, and even vehicle components. This allows the same system to work regardless of vehicle type, speed, or positioning, unlike inductive systems that require specific geometries and close proximity
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 solution provides a convenient, efficient, and environmentally friendly means of vehicle propulsion, reducing fossil fuel dependence by utilizing RF energy, which is resilient to debris and precipitation, and allows for vehicle mobility comparable to conventional IC-powered cars.
Implementation Method 1
coupling a rectenna on the vehicle, the rectenna configured to receive the RF signals transmitted from the RF generators and to generate power from the RF signals
Data Source
AI summary
A system and method are described for powering a vehicle using radio frequency (“RF”) signals. For example, a method according to one embodiment of the invention comprises: positioning a plurality of RF generators beneath the road surface of a roadway, the RF generators configured to transmit RF signals in the direction of vehicles traveling over the roadway; coupling a rectenna on a vehicle, the rectenna configured to receive the RF signals transmitted from the RF generators and to generate power from the RF signals; and using the power generated by the rectenna to power the vehicle.