Double-Sided Circuit With Conductive Sidewalls For Signal Integrity
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Solution Overview
Problem
Wireless communication devices require smaller multiplexers with reduced passive components, such as inductors, to minimize cross-talk and improve signal integrity, as existing multiplexers with large inductors suffer from proximity-induced signal distortion.
Innovation Solution
A double-sided circuit layout is implemented using an insulator with conductive sidewalls to electrically couple circuit elements on both surfaces, reducing the size of the circuit and minimizing component proximity, thereby reducing cross-talk and signal distortion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If large passive components (inductors) are used in multiplexers, then signal separation performance is improved, but circuit size increases and cross-talk increases
Solution Approach 1:
The patent transitions from a conventional planar single-sided circuit layout to a three-dimensional double-sided circuit layout. Circuit elements are distributed on both the top and bottom surfaces of the substrate, utilizing the vertical dimension to reduce inductor size and minimize cross-talk between components while maintaining signal separation performance.
2Area of stationary object
If circuit elements are placed in close proximity to reduce circuit size, then manufacturing cost is reduced, but cross-talk increases causing signal distortion
Solution Approach 1:
The patent segments the circuit elements and distributes them across both sides of the substrate rather than concentrating them on a single plane. This spatial segmentation allows elements to be placed in close proximity overall while maintaining adequate separation between interacting components, reducing cross-talk through strategic positioning on opposite surfaces.
3Area of stationary object
If conventional single-sided circuit layout is used, then manufacturing is simpler, but circuit size is larger and component proximity causes cross-talk
Solution Approach 1:
The patent employs a double-sided circuit layout that utilizes both surfaces of the substrate, effectively transitioning from two-dimensional planar arrangement to three-dimensional spatial distribution. This approach reduces the footprint of the circuit while the standardized manufacturing processes for multi-layer PCBs make the implementation feasible with conventional fabrication techniques.
Data Source
AI summary
The present disclosure provides circuits and methods for fabricating circuits. A circuit may include an insulator having a first surface, a second surface, a periphery, a first subset of circuit elements disposed on the first surface, a second subset of circuit elements disposed on the second surface, and at least one conductive sidewall disposed on the periphery, wherein the conductive sidewall electrically couples the first subset of circuit elements to the second subset of circuit elements.