Pulsed Microwave Transmission Timing for Stable High-Power Emission
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Solution Overview
Problem
Existing electromagnetic transmission devices struggle to achieve high-power continuous microwave emission stably, particularly in microwave heating and power transmission systems, due to limitations in power flux density and scalability, as well as heat management issues with semiconductor amplifiers.
Innovation Solution
The solution involves an electromagnetic transmission device that modulates microwaves with a repeating pulse using a predetermined transmission duty cycle, where multiple transmitters emit microwaves at different timings, creating a high-power flux density equivalent to continuous waves, and includes a control circuit to manage these timings and phase adjustments for coherent beam formation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If semiconductor amplifiers are used to output high-power continuous microwaves, then output power can be increased, but heat radiation becomes insufficient causing gain reduction and burnout
Solution Approach 1:
The patent applies periodic pulsed operation to semiconductor amplifiers, where each amplifier operates in cycles of transmission and non-transmission. By controlling the duty cycle and timing of pulses, the system achieves continuous equivalent power output while allowing amplifiers to rest and cool between pulses, preventing overheating and burnout while maintaining high power output capability
Solution Approach 2:
The patent segments the transmission system into multiple amplifiers operating at different timings. Instead of requiring a single amplifier to continuously handle the full power load, the total power is divided among multiple amplifiers that transmit in sequence, reducing the thermal burden on each individual amplifier while maintaining the overall high power output
2Power
If electron-tube amplifiers are used, then high-power output can be achieved, but the system cannot be easily scaled up or enlarged
Solution Approach 1:
The patent segments the high-power transmission system into multiple modular amplifier units that can be independently controlled and timed. This modular approach allows the system to be scaled by adding or removing amplifier units without requiring complete system redesign, enabling flexible adaptation to different power requirements while maintaining high-power output capability
Solution Approach 2:
The patent implements dynamic control of multiple amplifiers with adjustable timing and duty cycles. This dynamic operation allows the system to adapt to different transmission requirements, scale power output by adjusting the number and timing of active amplifiers, and optimize performance for various applications without hardware changes
3Power
If multiple amplifiers operate simultaneously, then high power flux density can be achieved, but heat management becomes difficult and stability decreases
Solution Approach 1:
The patent uses periodic pulsed operation with controlled duty cycles for each amplifier. By timing the pulses so that not all amplifiers operate at maximum power simultaneously, the system achieves high average power flux density at the transmission target while allowing individual amplifiers to cool during their non-transmission intervals, effectively managing heat generation
Solution Approach 2:
The patent implements preliminary timing control where amplifiers are activated in a predetermined sequence rather than simultaneously. This preliminary arrangement of transmission timings ensures that heat generation is distributed over time, preventing thermal accumulation while maintaining the required power flux density for effective transmission
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 enables stable and efficient emission of high-power microwaves equivalent to continuous waves, allowing for scalable and extensible microwave heating and power transmission systems without the need for specialized hardware, while mitigating heat-related issues in semiconductor amplifiers.
Implementation Method 1
emit, onto a focal portion, electromagnetic waves that are modulated by a repeating pulse with a predetermined transmission duty cycle
Implementation Method 2
emit, onto a focal portion where an irradiation target is disposed, electromagnetic waves
Data Source
Figure 1
Figure 2
Figure 3(a)~3(p)
AI summary
In order to obtain an electromagnetic transmission device and an electromagnetic transmission system that emit high-power continuous microwaves stably onto a material or an irradiation target in electromagnetic heating systems and electromagnetic power transmission systems that are required to emit electromagnetic waves such as high-power microwaves, the electromagnetic transmission device, the power amplification device, and the electromagnetic transmission system emit, onto an irradiation target, electromagnetic waves that are modulated by a repeating pulse with a predetermined transmission duty cycle, or electromagnetic waves that are modulated by a repeating pulse with a predetermined transmission duty cycle and are amplified.