Semiconductor Microwave Oven Single Signal Source Power Divider
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Solution Overview
Problem
Conventional semiconductor microwave ovens face challenges in achieving high-power output due to frequency combination issues when operating at different frequencies, leading to reduced energy efficiency and heating effectiveness, and the variability of semiconductor components makes it difficult to ensure consistent working frequencies across multiple sources.
Innovation Solution
A semiconductor microwave oven design that utilizes a single signal source, a power divider to allocate power equally among multiple output ends, and drive amplifiers to ensure all microwave signals have the same frequency, with phase shifters for adjustments, allowing for high-efficiency power output and improved heating efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If multiple semiconductor microwave sources operate at different frequencies to generate high-power microwave, then the power output is improved, but the energy efficiency deteriorates due to frequency combination issues
Solution Approach 1:
The patent divides the single microwave signal into multiple equal-power signals through a power divider, which are then amplified by multiple drive amplifiers. This segmentation approach allows multiple microwave sources to operate at the same frequency, avoiding frequency combination issues while achieving high-power output through parallel signal paths.
Solution Approach 2:
The patent combines multiple amplified microwave signals from parallel drive amplifiers into a single high-power microwave output. By merging signals that have been processed through identical frequency paths, the system achieves power multiplication without frequency mismatch, thereby maintaining energy efficiency.
2Power
If multiple independent semiconductor microwave sources are used to achieve high-power output, then the power output is improved, but the device complexity increases
Solution Approach 1:
The patent merges multiple microwave signal paths at the output stage to achieve high-power output from a single input signal source. This approach provides power multiplication while maintaining relative simplicity by sharing the signal source and control circuitry across multiple parallel amplifier channels.
3Volume of moving object
If semiconductor components are used to reduce size and cost, then the volume and cost are reduced, but the frequency consistency deteriorates due to component variability
Solution Approach 1:
The patent segments the microwave signal into multiple parallel paths, each processed by identical drive amplifier circuits. This segmentation with identical processing paths ensures that frequency consistency is maintained across all output signals, compensating for component variability through uniform signal treatment.
Solution Approach 2:
The patent uses a power divider to precisely control and equalize the power parameters of divided signals before amplification. By establishing equal initial power distribution and using identical amplification circuits, the system achieves frequency and power consistency despite semiconductor component variations.
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 design ensures high-efficiency power output and improved heating efficiency by maintaining consistent frequencies across multiple microwave sources, resulting in a more compact, cost-effective, and efficient semiconductor microwave oven.
Implementation Method 1
a signal source configured to generate a first microwave signal
Implementation Method 2
power of the first microwave signal is allocated by the power divider according to a preset proportion to generate N second microwave signals with a same frequency
Implementation Method 3
each drive amplifier is configured to conduct a drive amplification on a corresponding second microwave signal and to input the second microwave signal after the drive amplification
Data Source
Figure 1A
Figure 1B
Figure 2A
AI summary
A semiconductor microwave oven and a semiconductor microwave source thereof. The semiconductor microwave oven comprises: a body (1), a microwave input device, a semiconductor microwave source (3), a power divider (32), N drive amplifiers (33) and a control device (4), wherein the microwave input device is in communication with a chamber (10); the semiconductor microwave source (3) comprises a signal source (31) for generating a first microwave signal; a first input end (6) of the power divider (32) is connected to the signal source (31), and the power of the first microwave signal is allocated by the power divider (32) according to a pre-set proportion to generate N second microwave signal with the same frequency so as to output same corresponding to N output ends (7); each drive amplifier (33) is used for conducting drive amplification on a corresponding second microwave signal, and respectively inputting same to the microwave input device and transmitting same into the chamber (10); and the control device (4) is used for controlling the signal source (31) to generate the first microwave signal. The microwave oven shares one signal source (31) to gurantee operating at the same frequency, thereby realizing the highly efficient power output.