RF Integrated Circuit Layout Generation with Iterative Simulation
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Solution Overview
Problem
Current IC layout design methods for RF devices are inefficient and time-consuming, particularly when optimizing area and meeting specifications for components like capacitors, inductors, and transformers, as they require extensive redesign and simulation.
Innovation Solution
A method that involves inputting fixed and variable parameters for RF devices to generate a layout that meets specified requirements, allowing for iterative adjustments until the desired frequency response and geometric parameters are satisfied, thereby streamlining the design process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If pre-simulation or post-simulation is performed for RF device layout design, then the required specifications can be verified, but the design time increases significantly
Solution Approach 1:
The patent applies preliminary action by performing simulations during the layout generation process itself rather than after design completion. The system generates multiple layout candidates and automatically evaluates them through simulation, verifying specification satisfaction in advance. This integrates verification into the creation process, eliminating the need for separate post-simulation phases and significantly reducing total design time while ensuring reliability.
2Reliability
If redesign or layout change is performed to meet specifications, then the required specifications can be satisfied, but the design efficiency decreases
Solution Approach 1:
The patent implements dynamics by creating a flexible, iterative layout generation system that can adapt to different specification requirements. The system generates multiple layout variants and evaluates them through simulation, allowing designers to dynamically select or adjust layouts based on real-time feedback. This dynamic approach enables efficient exploration of design spaces and quick adaptation to specification changes without requiring complete redesigns, thereby maintaining high productivity while ensuring specification satisfaction.
3Measurement precision
If electromagnetic simulation is performed for transformer layout design, then the exact solution can be obtained, but the simulation time increases significantly
Solution Approach 1:
The patent applies partial action by performing electromagnetic simulations only on critical layout parameters and key design points rather than exhaustive simulation of all possible configurations. The system generates multiple transformer layout candidates and selectively simulates the most promising ones, obtaining sufficient accuracy for design purposes without the computational burden of complete simulation spaces. This partial simulation approach significantly reduces simulation time while maintaining adequate measurement precision for successful transformer design.
Data Source
AI summary
A method for producing a layout of a device in an integrated circuit before actually fabricated is provided. The method includes inputting at least one fixed parameter for the device for fabrication. And then, a first part of a set of variable parameters of a layout of the device is input. The complete set of the variable parameters is generated. It is checked whether or not the layout with the parameters is satisfying a requirement, wherein an end step is reached if the layout is accepted by the requirement, and a new part of the set of variable parameters as the first part being looping in the foregoing steps if the layout is not accepted by the requirement.