Triangular Signal Line Substrate with Matched Impedance for EMI Reduction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
High-speed electronic devices face challenges in transmitting differential signals effectively due to electromagnetic interference (EMI) between signal lines, which affects signal integrity and data transmission rates.
Innovation Solution
A circuit board or substrate with three signal lines is designed, where the impedance between each pair of signal lines is matched to a specific frequency, arranged in a triangular configuration to reduce EMI and enhance signal integrity, allowing for improved data transmission and reception rates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If three signal lines are used for transmitting differential signals, then data transmission rate is improved, but electromagnetic interference between signal lines increases
Solution Approach 1:
The patent applies local quality by configuring different dielectric materials with specific dielectric constants in different regions between the signal lines. The first dielectric layer is positioned between the first and second signal lines, while the second dielectric layer is positioned between the second and third signal lines, creating localized electromagnetic field distribution that reduces interference while maintaining high-speed transmission capability
Solution Approach 2:
The patent changes electromagnetic parameters by carefully selecting and positioning dielectric materials with different dielectric constants. The first dielectric has a first dielectric constant and the second dielectric has a second dielectric constant, allowing optimization of impedance matching and electromagnetic field distribution to reduce interference between the three signal lines
2Reliability
If impedance is matched between signal lines, then signal integrity is improved, but substrate complexity increases
Solution Approach 1:
The patent implements local quality by positioning specific dielectric layers between particular pairs of signal lines. The first dielectric layer is located between the first and second signal lines, while the second dielectric layer is located between the second and third signal lines, creating localized impedance control regions that simplify the overall substrate design while achieving signal integrity
Solution Approach 2:
The patent uses composite materials by combining multiple dielectric layers with different dielectric constants in a structured arrangement. This composite dielectric structure enables precise impedance matching between signal lines while maintaining a relatively simple substrate architecture, as the different dielectric materials work together to control electromagnetic field distribution
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 solution improves data transmission and reception rates by minimizing EMI and ensuring signal integrity through matched impedance and triangular signal line arrangement, reducing the substrate's size and wiring space.
Implementation Method 1
An electric field may be generated due to current flow at the signal line through which the data is transmitted, and such an electric field may cause an electro magnetic interference (EMI) phenomenon
Implementation Method 2
a first dielectric having a first dielectric constant between the first signal line and the second signal line
Data Source
AI summary
The present disclosure relates to a 5th generation (5G) or pre-5G communication system for supporting a higher data transmission rate than 4th generation (4G) communication systems such as long term evolution (LTE). In a wireless communication system, a transmission apparatus comprises at least one antenna port for transmitting/receiving a signal, an analogue filter for selecting the frequency of the signal, and a voltage standing wave ratio (VSWR) detection unit for measuring the VSWR of the antenna port, wherein the VSWR detection unit is configured to detect both a forward signal and a reverse signal for an input terminal of the analogue filter, to determine the respective power values of a forward signal and a reverse signal for an output terminal of the analogue filter by applying characteristic parameters of the analogue filter to the detected forward signal and reverse signal, and to determine the VSWR of the antenna port on the basis of the respective power values of the forward signal and the reverse signal for the output terminal of the analogue filter.