High-Frequency Matching Circuit Layout for Harmonic Attenuation
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Solution Overview
Problem
High frequency modules with multiple circuits face challenges in downsizing and improving circuit characteristics without increasing complexity, as existing techniques require multiple components or large inductive elements to achieve desired harmonic wave attenuation.
Innovation Solution
The configuration of adjacent matching circuits that electromagnetically couple each other, allowing one matching circuit to perform both impedance matching and harmonic wave attenuation, thereby reducing the number of elements and element constants required, and compensating for each other's limitations to achieve desired circuit characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If additional filter circuits are added to achieve harmonic wave attenuation, then the attenuation performance is improved, but the device complexity and overall size increase
Solution Approach 1:
The matching circuit is designed to perform multiple functions simultaneously: impedance matching and harmonic wave attenuation. By configuring the matching circuit with specific element arrangements (such as series and parallel LC combinations), it achieves both matching performance and filter functionality without requiring separate dedicated filter circuits, thereby reducing overall device complexity while maintaining attenuation effectiveness
Solution Approach 2:
The patent combines the matching circuit and filter circuit into a single integrated matching circuit structure. The matching circuit includes elements arranged to create attenuation poles at harmonic frequencies, effectively merging the functions of impedance matching and harmonic suppression into one circuit block, which reduces the number of components and simplifies the overall circuit configuration
2Reliability
If larger inductive elements are used to achieve desired attenuation characteristics, then the circuit characteristics are improved, but the overall module size increases
Solution Approach 1:
The patent optimizes the parameters of circuit elements (inductance values, capacitance values, and their arrangements) to achieve the desired attenuation characteristics with smaller physical component sizes. By carefully selecting and arranging elements with specific parameter values, the circuit achieves effective harmonic attenuation without requiring large inductive elements, thus maintaining compact module dimensions
Solution Approach 2:
The matching circuit elements are arranged in a nested or compact configuration where series and parallel LC combinations are integrated closely together. This nesting approach allows the circuit to achieve the required electrical characteristics with reduced physical footprint, as the elements are optimally positioned to maximize their electromagnetic interaction while minimizing overall space requirements
3Volume of moving object
If the number of circuit elements is reduced to downsize the module, then the overall size is reduced, but the circuit characteristics deteriorate
Solution Approach 1:
The matching circuit is designed to perform multiple functions simultaneously: impedance matching and harmonic wave attenuation. By configuring the matching circuit with specific element arrangements (such as series and parallel LC combinations), it achieves both matching performance and filter functionality without requiring separate dedicated filter circuits, thereby reducing overall device complexity while maintaining attenuation effectiveness
Solution Approach 2:
The patent optimizes the parameters of circuit elements (inductance values, capacitance values, and their arrangements) to achieve the desired attenuation characteristics with smaller physical component sizes. By carefully selecting and arranging elements with specific parameter values, the circuit achieves effective harmonic attenuation without requiring large inductive elements, thus maintaining compact module dimensions
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
This approach enables the creation of a high frequency module with a small overall size and excellent circuit characteristics by eliminating the need for additional filters and reducing insertion losses, while maintaining effective harmonic wave attenuation.
Implementation Method 1
the first matching circuit and the second matching circuit are arranged adjacent to one another in such a manner as to attenuate a harmonic wave of a signal traveling through the first matching circuit
Data Source
AI summary
A high frequency module includes a first amplifier circuit, a second amplifier circuit, a first matching circuit connected to the first amplifier circuit, and a second matching circuit connected to the second amplifier circuit, wherein the first matching circuit and the second matching circuit are arranged adjacent to each another. The first matching circuit may be provided on an output side of the first amplifier circuit.