Substrate Inductive Coupler Using Grounded Rejected Signals
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Solution Overview
Problem
Communication devices face signal leakage issues due to congested transmission mediums, which affect communication quality, and existing filters are inadequate in addressing these leaks.
Innovation Solution
A substrate with an inductive coupler is introduced, featuring a first inductor coupled to a transmitter filter and antenna, and a second inductor coupled to ground, which generates an induced signal to counteract leakage signals by utilizing rejected signals with specific frequencies.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional filters are used to isolate signals, then signal filtering is achieved, but signal leakage occurs affecting communication quality
Solution Approach 1:
The patent converts the rejected signal (harmful factor) into a useful component by using it to generate an induced signal through the second inductor that counteracts the leakage signal. The rejected signal at frequency f2 is transformed into a beneficial counter-signal that reduces leakage, thereby converting harm into benefit.
Solution Approach 2:
The patent applies preliminary anti-action by generating an induced signal through the inductive coupler that opposes and counteracts the leakage signal before it can cause harmful effects. The second inductor creates a counter-signal in advance that neutralizes the leakage, preventing rather than merely responding to the harmful effect.
2Object-generated harmful factors
If additional shielding is added to reduce signal leakage, then leakage reduction is achieved, but device complexity and cost increase
Solution Approach 1:
The patent replaces the mechanical/physical shielding approach with an electromagnetic field-based solution. Instead of using physical barriers (mechanical shielding), the invention uses an inductive coupler with inductors to generate electromagnetic counter-signals that actively cancel leakage, substituting a field-based mechanism for a mechanical one.
Solution Approach 2:
The inductive coupler acts as an intermediary component between the filter and the leakage signal. Rather than directly blocking leakage with shielding, the coupler mediates by transforming rejected signals into counter-signals that neutralize the leakage, providing an intermediate mechanism that reduces complexity.
3Reliability
If rejected signals are completely blocked, then signal isolation is improved, but useful signal components may be lost
Solution Approach 1:
The patent uses parameter changes by utilizing the frequency characteristics of rejected signals. The second inductor is designed with specific inductance values to resonate at the rejected frequency f2, allowing selective processing of signals based on their frequency parameters. This enables differentiation between harmful rejected signals and useful signal components.
Solution Approach 2:
The patent applies local quality by creating frequency-specific processing paths. The inductive coupler is designed to selectively transform only the rejected frequency components (at f2) into counter-signals, while leaving other frequency components unaffected. This localized processing ensures that only harmful frequencies are modified, preserving useful signal components.
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 inductive coupler significantly reduces signal leakage by up to 50% and enhances isolation between transmission and receiving signals, potentially eliminating the need for additional shielding.
Implementation Method 1
The second inductor is configured to provide a path to ground for a rejected signal having a rejected frequency
Implementation Method 2
The second inductor is configured such that the rejected signal traveling through the second inductor causes the first inductor to generate an induced signal that counteracts a leakage signal traveling through the transmission filter
Data Source
AI summary
A substrate that includes at least one dielectric layer and an inductive coupler formed in the at least one dielectric layer. The inductive coupler includes a first inductor and a second inductor. The first inductor is formed in the at least one dielectric layer. The first inductor is configured to be coupled to a transmitter filter and an antenna. The second inductor is formed in the at least one dielectric layer. The second inductor is configured to be coupled to the transmitter filter and ground. The second inductor is configured to provide a path to ground for a rejected signal having a rejected frequency. The second inductor is configured such that the rejected signal traveling through the second inductor causes the first inductor to generate an induced signal that counteracts a leakage signal traveling through the transmission filter.