# Microwave Cavity Resonant Frequency

**Formula:**`fr = c / (2 * L)`

## Introduction to Microwave Cavity Resonant Frequency

In microwave engineering, the resonant frequency of a microwave cavity can be calculated using the speed of light and the length of the cavity. The resonant frequency is an essential parameter in microwave circuit design and applications. In this formula, ** fr** represents the resonant frequency,

**is the speed of light, and**

*c***denotes the length of the microwave cavity.**

*L*## Parameter usage:

`c`

= speed of light (m/s)`L`

= length of the microwave cavity (meters)

## Output:

`fr`

= resonant frequency (Hz)

## Data validation

The speed of light should be a positive constant value, and the length of the cavity should be a positive non-zero value.

## Summary

This formula provides a straightforward method to calculate the resonant frequency of a microwave cavity in microwave engineering applications.

Tags: Microwave Engineering, Resonant Frequency, Electromagnetism