Wilkinson Power Combiner Reactive Balance Element
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Solution Overview
Problem
The existing Wilkinson power combiner suffers from low efficiency and reliability due to the consumption of electric energy by the balance resistive element and potential damage to this element, especially in high-power applications, leading to abnormal operation.
Innovation Solution
The power combiner design replaces the balance resistive element with a balance capacitive or inductive element, ensuring that the voltage at both ports remains equal when currents are unbalanced, eliminating energy consumption and reducing the risk of element damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If a balance resistive element is used in the Wilkinson power combiner, then the voltage balance between ports is maintained, but electric energy is consumed and efficiency is reduced
Solution Approach 1:
The patent changes the parameter type of the balance element from resistive to reactive (capacitive or inductive). By using a balance capacitive element or balance inductive element instead of a balance resistive element, the element no longer consumes electric energy while still maintaining voltage balance between ports through reactive impedance matching.
2Stability of the object's composition
If a balance resistive element is used in the Wilkinson power combiner, then the voltage balance between ports is maintained, but the element is prone to damage and reliability is reduced
Solution Approach 1:
The patent changes the parameter type of the balance element from resistive to reactive (capacitive or inductive). Reactive elements do not dissipate power and are not prone to thermal damage like resistive elements, thereby improving reliability while maintaining voltage balance functionality.
3Stability of the object's composition
If a balance resistive element is used in the Wilkinson power combiner, then the voltage balance between ports is maintained, but additional electric energy is consumed
Solution Approach 1:
The patent changes the parameter type of the balance element from resistive to reactive (capacitive or inductive). Reactive elements store and release energy without dissipating it, eliminating the continuous electric energy consumption that occurs with resistive elements while maintaining voltage balance.
Data Source
AI summary
A power combiner comprises a first transmission line or lumped circuit element, a second transmission line or lumped circuit element, a third transmission line or lumped circuit element, a fourth transmission line or lumped circuit element and a balance capacitive element (Cbal) or balance inductive element (Lbal). The first transmission line or lumped circuit element is coupled to a first port. The second transmission line or lumped circuit element is coupled between the first transmission line or lumped circuit element and a common port. The third transmission line or lumped circuit element is coupled to a second port. The fourth transmission line or lumped circuit element is coupled between the third transmission line or lumped circuit element and the common port. The balance capacitive element (Cbal) or the balance inductive element (Lbal) is coupled between a connection point between the first transmission line or lumped circuit element and the second transmission line or lumped circuit element and a connection point between the third transmission line or lumped circuit element and the fourth transmission line or lumped circuit element. Further provided are a power amplifier module and a magnetic resonance imaging device.