Prototype RF Circuit Tuning With Variable Capacitors
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Solution Overview
Problem
Current CAD, simulation, and modeling tools face challenges in achieving first-time-correct designs for electronic circuits due to unknown impedance sources, necessitating multiple prototype iterations, which increases costs and time.
Innovation Solution
A method involving a prototype electronic circuit with variable capacitors and resistors to test and determine optimal capacitance and resistance values that meet desired operating parameters, allowing for the replacement of these components with fixed-value equivalents, thereby reducing the number of design iterations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If CAD, simulation, and modeling tools are used to predict circuit parameters, then design accuracy is improved, but the number of prototype iterations increases due to unknown impedance sources
Solution Approach 1:
The patent applies preliminary action by determining optimal capacitance values for compensating unknown impedance sources during the prototype testing phase, then using these predetermined values to configure the final circuit design. This preliminary determination of compensation values eliminates the need for multiple iterative prototypes, as the final circuit can be directly configured with the pre-determined optimal values.
2Reliability
If multiple prototype iterations are performed to account for unknown impedance sources, then circuit performance is improved, but manufacturing cost increases
Solution Approach 1:
The patent applies parameter changes by introducing variable capacitance values to compensate for unknown impedance sources. By adjusting the capacitance parameter during prototype testing and determining the optimal value, the circuit achieves desired performance without requiring multiple physical prototype iterations, thereby reducing manufacturing costs while maintaining reliability.
3Adaptability or versatility
If variable capacitors are used in prototype testing to determine optimal values, then design flexibility is improved, but device complexity increases
Solution Approach 1:
The patent applies dynamics by using variable capacitors during the prototype testing phase to dynamically adjust capacitance values and determine optimal compensation parameters. Once the optimal value is determined, the variable capacitor is replaced with a fixed-value capacitor in the final design, thereby maintaining design flexibility during development while simplifying the final device structure.
Data Source
AI summary
A method for designing an electronic circuit includes providing a prototype electronic circuit comprising one or more capacitors and one or more other components, at least one of the one or more capacitors being a variable capacitor; testing the electronic circuit by adjusting the capacitance of the one or more variable capacitors to determine one or more first capacitance values of the one or more variable capacitors that cause the electronic circuit to have one or more operating parameters that meet one or more desired operating parameters of the electronic circuit; determining, based on the testing of the electronic circuit, capacitance values for one or more fixed-value capacitors to replace the one or more variable capacitors in the electronic circuit, each of the fixed-value capacitors having a second capacitance value equivalent to the first value of the corresponding variable capacitor. A method of designing such a prototype electronic circuit is also provided. An electronic circuit designed by using the method, a radio frequency module comprising such an electronic circuit, a wireless device comprising such an electronic circuit are also provided.