High-Frequency Module With Integrated Signal Cancellation Filtering
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Solution Overview
Problem
Existing high-frequency modules with external compensation circuits are prone to environmental noise and coupling, leading to variations in attenuation characteristics and increased size due to the external placement of compensation circuits.
Innovation Solution
A high-frequency module design with a takeout circuit unit integrated within the signal processing unit, utilizing electromagnetic field coupling to distribute high-frequency signals and adjust phase and amplitude, ensuring cancellation of unwanted signals within the module, thereby enhancing attenuation characteristics and reducing size.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the compensation circuit is provided outside of the filter circuit, then the attenuation characteristics outside of the pass band can be improved, but the size of the module increases
Solution Approach 1:
The patent integrates the compensation circuit into the filter circuit by providing the takeout circuit unit within the high-frequency signal processing unit. The takeout circuit unit includes a distributed circuit element (inductor or capacitor) that is electrically connected to the filter circuit, merging the compensation function into the existing filter structure. This integration achieves the desired attenuation characteristics while reducing the overall module size compared to external compensation circuits.
2Reliability
If the compensation circuit is provided outside of the filter circuit, then the attenuation characteristics can be adjusted, but the module becomes more susceptible to external noise and coupling
Solution Approach 1:
By integrating the takeout circuit unit within the high-frequency signal processing unit, the compensation circuit is placed in a controlled internal environment that is shielded from external noise and coupling. The distributed circuit element is electrically connected to the filter circuit in a way that maintains electrical isolation from external interference, thereby improving reliability while protecting against harmful external factors.
Solution Approach 2:
The takeout circuit unit acts as an intermediary between the filter circuit and the external environment. It provides the necessary compensation function while being isolated from external noise and coupling through the structured electrical connections within the signal processing unit. This intermediary structure allows the compensation circuit to perform its function without being directly exposed to harmful external factors.
3Area of stationary object
If the takeout circuit unit is integrated within the signal processing unit, then the size is reduced and stability is improved, but the design complexity increases
Solution Approach 1:
The takeout circuit unit is designed as a distinct functional module within the high-frequency signal processing unit. The distributed circuit element (inductor or capacitor) is provided as a separate component that is electrically connected to the filter circuit through defined connection points. This segmentation allows for modular design and assembly, reducing the overall complexity compared to a fully integrated monolithic structure while still achieving size reduction and improved stability.
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 integrated takeout circuit unit enhances attenuation characteristics by canceling out unwanted signals within the module, reducing size, and minimizing the impact of external noise and coupling, resulting in stable and adjustable high-frequency filtering.
Implementation Method 1
one end of the takeout circuit unit is connected through inductive or capacitive coupling with a connection conductor connecting the filter devices to each other
Implementation Method 2
The electromagnetic field coupling is realized by inductive coupling or capacitive coupling
Implementation Method 3
The electromagnetic field coupling is realized by inductive coupling or capacitive coupling
Implementation Method 4
As a result of the distributed high-frequency signal being transmitted by the takeout circuit unit, the phase and amplitude of the signal change
Implementation Method 5
the suppression-target signals cancel each other out at a connection node between the filter circuit and the compensation circuit
Data Source
AI summary
In a high-frequency module, a phase and amplitude of a high-frequency signal from a connection conductor between filter devices change due to the signal being transmitted by a takeout circuit unit. When the high-frequency signal at a third external connection terminal is a suppression signal and a high-frequency signal passing through the first filter circuit is a suppression-target signal, the transmission distance in the takeout circuit unit is such that the phase of the suppression signal is approximately inverted with respect to the phase of the suppression-target signal and the suppression signal has approximately the same amplitude as the suppression-target signal. The suppression signal is mixed with the suppression-target signal and components outside of the pass band are cancelled out and the attenuation characteristics of the filter circuit are enhanced.