Tx-Line Calculator

A transmission line calculator for RF/microwave engineers.

Background

This project started as a part-time hobby during my undergraduate studies. I was taking an RF/Microwave circuits course at the time, and Android was just emerging as a mobile platform. It was a natural exercise to combine what I was learning in class — transmission line theory and microwave circuit design — with the challenge of building an Android app from scratch.

The project has been kept alive and occasionally updated ever since.

Features

• Analyze mode: calculate electrical parameters from physical dimensions
• Synthesize mode: calculate physical dimensions from electrical parameters

Supported Transmission Lines

• Microstrip Line
• Coupled Microstrip Line
• Stripline
• Coupled Stripline
• Coplanar Waveguide
• Grounded Coplanar Waveguide
• Coaxial

Requirements

• Android 11 (API level 30) or higher
• Java 17

Screenshots

License

This project is licensed under the GNU General Public License v3.0. See the LICENSE file for details.

Building the Project

This project requires the Android SDK and Java 17. Build using the Gradle wrapper scripts provided:

./gradlew build

On Windows, use:

gradlew.bat build

The project uses Android Gradle Plugin 9.2.1 and targets Android API level 37.