Amplifier Power Supply Path With Parallel Conductor Tracks
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Solution Overview
Problem
Existing low-loss components with amplifiers face challenges in minimizing signal loss and maintaining low resistance for direct current while preventing high-frequency signal output from reaching the power source, especially in compact designs.
Innovation Solution
The electrical component incorporates a power-supply path with parallel conductor track sections on a multilayer carrier substrate, where the line is designed as a λ/4 line at the operating frequency, effectively blocking high-frequency signals and maintaining low impedance for direct current, allowing for a compact surface-mountable design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conductor track sections are connected in parallel to increase line cross section and reduce DC resistance, then current-carrying capacity increases, but device complexity increases due to multiple connections and planes
Solution Approach 1:
The power supply line is divided into multiple conductor track sections arranged in parallel across different metallization planes. Each section carries a portion of the total current, effectively increasing the overall current-carrying capacity and reducing DC resistance through the parallel connection of multiple segments.
Solution Approach 2:
The conductor track sections are distributed across multiple metallization planes in the vertical dimension rather than being confined to a single plane. This three-dimensional arrangement increases the effective line cross-section without expanding the horizontal footprint, thereby reducing DC resistance while maintaining a compact device layout.
2Loss of energy
If the line is designed as a λ/4 line to block high-frequency signals, then signal loss is reduced, but the line length is constrained by the operating frequency
Solution Approach 1:
The line is designed with specific electrical parameters including conductor thickness, width, and spacing optimized to achieve λ/4 electrical length at the operating frequency. The dielectric layer parameters are also selected to control the characteristic impedance and electrical length, enabling effective high-frequency signal blocking while minimizing signal loss.
3Reliability
If multiple metallization planes are used to arrange conductor track sections, then line resistance decreases, but manufacturing complexity increases
Solution Approach 1:
The power supply line conductor track sections are integrated directly into the carrier substrate's existing metallization planes, merging the power distribution function with the substrate structure. This eliminates the need for separate external power lines and reduces the number of discrete components, thereby simplifying the overall manufacturing process despite using multiple planes.
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 configuration achieves low signal loss and high current-carrying capacity while preventing high-frequency signal output from reaching the power source, enabling efficient power supply to the amplifier stages and reducing the need for external components.
Implementation Method 1
By connecting various conductor track sections in parallel, it is possible effectively to increase the line cross section relative to a line with only one such line section and thus to achieve a low line resistance for a direct current
Implementation Method 2
The conductor track sections are constructed in terms of their parameters, such as thickness, width, length, and, optionally, distance to the ground area, so that the HF-active part of the line acts at the operating frequency of the amplifier as a λ/4 line, whereby the line overall has a low impedance for a direct-current signal
Implementation Method 3
If the material of the dielectric layers has a high relative dielectric constant ∈r>7. Here, the electrical length of the line is especially short.
Data Source
AI summary
An electrical component includes an amplifier that includes an output stage, and a power-supply path for powering the output stage. The power supply path includes a line that includes conductor track sections in parallel. The electrical component also includes a carrier substrate containing the amplifier and the line with the conductor tracks.