Vivaldi Antenna Calculator
Calculate approximate dimensions and bandwidth parameters for a Vivaldi tapered slot antenna.
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Inputs
Live
Math
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Related
Enter parameters and click Calculate to view results
Formula & Theory
Width ≈ λ(low)/2, Length ≈ λ(low), Bandwidth Ratio = f(high)/f(low)This formula is used to calculate antenna parameters for vivaldi antenna calculator.
Overview
Vivaldi Antenna Calculator supports ultra wideband antennas planning with a practical calculation based on the displayed inputs.
Input Guide
Enter Low Frequency, High Frequency exactly in the units shown by this vivaldi antenna. Check the operating band, unit prefix, and decimal position before calculating; these are the inputs used by the formula.
- Low Frequency — use GHz.
- High Frequency — use GHz.
Output Guide
The results describe the calculated vivaldi antenna values for the inputs you entered. Check each value against the available space, selected components, feed system, and operating conditions before making a final design decision.
How This Calculator Works
The Vivaldi Antenna uses Width ≈ λ(low)/2, Length ≈ λ(low), Bandwidth Ratio = f(high)/f(low). Supply Low Frequency (GHz), High Frequency (GHz) in the displayed units, then use the calculated values as the first engineering target for this ultra wideband antennas design or analysis.
Design Notes
Installed performance can vary with frequency, losses, tolerances, environment, and system configuration.
Build and Tuning Notes
Use the result as a starting point, then validate the completed system with measurement or simulation.
Frequently Asked Questions
What does the Vivaldi Antenna Calculator calculate?
It calculates the applicable design or performance value from the inputs shown.
How should I use the result?
Confirm units and operating conditions before applying it to the system design.
Why can results differ in practice?
Physical installation, materials, losses, and measurement conditions affect real-world performance.
Alex Warren
B.Sc. in Electrical & Electronic Engineering (EEE)
Alex specialises in antenna design and wave propagation. His expertise helps ensure these calculators present practical RF concepts, useful design estimates, and clear engineering guidance for students, HAM operators, and wireless professionals.