Double-Sided Parallel-Strip Line RF Circuit Design
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Solution Overview
Problem
Traditional RF/EM circuit components, such as power dividers and couplers, are limited in size due to their design based on transmission lines, and require separate electromagnetic simulation for accurate performance evaluation, which can be cumbersome and inefficient.
Innovation Solution
The implementation of a double-sided parallel-strip line (DSPSL) with a balanced line and virtual ground plane, allowing for noise rejection and integration with other active and passive components, enabling simulation and design within a single electrical circuit design platform without the need for separate electromagnetic simulators.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional transmission line design is used for RF/EM circuit components, then the circuit performance can be evaluated, but the size of components is limited and requires separate electromagnetic simulation
Solution Approach 1:
The patent merges the electromagnetic simulation capabilities with the electrical circuit design platform by implementing a double-sided parallel-strip line (DSPSL) model that can be directly simulated using standard electrical circuit simulators. This eliminates the need for separate electromagnetic simulation tools while maintaining accurate performance evaluation, thereby reducing simulation process complexity without sacrificing measurement precision.
2Adaptability or versatility
If transmission line-based components are used, then circuit functionality is achieved, but component size is increased
Solution Approach 1:
The patent employs parameter changes by transitioning from traditional transmission line dimensions to a double-sided parallel-strip line configuration with specific geometric parameters (strip width, separation distance, substrate thickness). This parameter optimization enables the same circuit functionality to be achieved with significantly reduced component size, as the DSPSL structure allows for more compact implementation while maintaining electrical performance.
3Adaptability or versatility
If conventional power dividers and couplers are designed, then basic RF functionality is provided, but noise rejection is insufficient
Solution Approach 1:
The patent utilizes asymmetry in the double-sided parallel-strip line configuration where the conducting plates are positioned on opposite sides of the substrate at specific offsets from the center. This asymmetric arrangement creates differential signaling paths that inherently reject common-mode noise while maintaining standard RF circuit functionality, thereby improving noise rejection without sacrificing adaptability.
4Measurement precision
If separate electromagnetic simulators are used for accurate simulation, then simulation accuracy is maintained, but design time is increased
Solution Approach 1:
The patent creates an accurate electrical circuit model (copy) of the double-sided parallel-strip line that replicates the behavior of the full electromagnetic structure. This model can be simulated using standard electrical circuit simulators, providing sufficiently accurate results for design purposes without requiring computationally intensive electromagnetic simulation, thus reducing design time while maintaining acceptable simulation accuracy.
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 allows for more compact RF/EM circuit designs with improved noise rejection and bandwidth, reducing the complexity and time required for circuit design and simulation, while maintaining accurate performance metrics.
Implementation Method 1
a balanced line arranged to reject external noise from connected circuit components when fed to other electrical circuits during operation of the RF/EM circuit
Implementation Method 2
the DSPSL comprises a virtual ground plane between the DSPSL. the virtual ground plane is defined at a mid-point of a dielectric separation between the pair of parallel-strip lines of conducting plate
Data Source
AI summary
An electrical circuit component for an RF/EM circuit, a method for use in RF/EM circuit design and an electrical circuit design platform. The electrical circuit component comprises a double-sided parallel-strip line (DSPSL) having a balanced line arranged to reject external noise from connected circuit components when fed to other electrical circuits during operation of the RF/EM circuit; wherein the DSPSL includes a pair of parallel-strip lines of conducting plate disposed back-to-back on opposite sides of a substrate, and the DSPSL is provided as a computer-implemented circuit component for use on an electrical circuit design platform.