Multilayer Power Coupling Circuit for Wider Isolation Bandwidth
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Solution Overview
Problem
Existing power distribution/coupling components in large base stations suffer from insufficient isolation between terminals, leading to narrow bandwidths with sufficient attenuation, which affects the amplification efficiency of low noise amplifiers.
Innovation Solution
A power distribution/coupling circuit and component design featuring a multilayer body with stacked dielectric layers, including inductors and capacitors configured to provide improved isolation between terminals, utilizing a third inductor and fourth capacitor to enhance bandwidth and attenuation characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional power distribution/coupling component is used, then the basic power distribution function is achieved, but the isolation between terminals is insufficient resulting in narrow bandwidth with sufficient attenuation
Solution Approach 1:
The power distribution/coupling component is divided into multiple functional layers: a first power distribution/coupling circuit layer with initial isolation elements, and a second power distribution/coupling circuit layer with additional isolation elements. This segmentation allows each layer to contribute to overall isolation performance, achieving wider bandwidth with sufficient attenuation while maintaining the power distribution function.
2Adaptability or versatility
If isolation between terminals is improved by adding circuit elements, then bandwidth increases, but device complexity increases
Solution Approach 1:
Multiple power distribution/coupling circuit layers are merged into a single integrated component structure. The first and second circuit layers are combined with shared terminals and ground connections, allowing the complex isolation function to be achieved through integrated design rather than separate components, thus managing device complexity while improving bandwidth.
Solution Approach 2:
The isolation function is enhanced by adding a vertical dimension to the circuit design. Instead of simply adding more elements in a single plane, the invention uses multiple stacked layers (vertical dimension) to provide additional isolation paths and resonance control, achieving wider bandwidth without proportionally increasing planar complexity.
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
The design achieves wider bandwidths with larger attenuation, improving the isolation between terminals and maintaining magnetic flux without hindrance, thus enhancing the amplification efficiency in base stations.
Implementation Method 1
a first inductor L1 connected between the first terminal T1 and the second terminal T2
Implementation Method 2
a first capacitor C1 connected between the first terminal T1 and a reference potential, a second capacitor C2 connected between the second terminal T2 and the reference potential
Data Source
AI summary
A power distribution/coupling circuit includes a common terminal, first and second terminals, a first connection point, a first inductor connected between the first connection point and the first terminal, a second inductor connected between the first connection point and the second terminal, a first capacitor connected between an end of the first inductor closer to the first terminal and a ground, a second capacitor connected between an end of the second inductor closer to the second terminal and the ground, a third capacitor connected between the first connection point and the ground, and a resistor connected between the first terminal and the second terminal, wherein the power distribution/coupling circuit further includes a third inductor connected between the common terminal and the first connection point and a fourth capacitor connected between an end of the third inductor closer to the common terminal and the ground.