Short Dipole Antenna Calculator
Calculate wavelength, radiation resistance and gain of an electrically short dipole antenna.
2
Inputs
Live
Math
3
Related
Enter parameters and click Calculate to view results
Formula & Theory
Rr = 20π²(L/λ)² , L ≤ λ/10This formula is used to calculate antenna parameters for short dipole antenna calculator.
Overview
Short Dipole Antenna helps you calculate design values for a dipole antennas project from Frequency, Antenna Length. Calculate wavelength, radiation resistance and gain of an electrically short dipole antenna. Use the result to make an informed first design decision before choosing hardware, setting dimensions, or evaluating the RF system in its final environment.
Input Guide
Enter Frequency, Antenna Length exactly in the units shown by this short dipole antenna. Check the operating band, unit prefix, and decimal position before calculating; these are the inputs used by the formula.
- Frequency — use MHz.
- Antenna Length — use cm.
Output Guide
The results describe the calculated short dipole 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 Short Dipole Antenna uses Rr = 20π²(L/λ)² , L ≤ λ/10. Supply Frequency (MHz), Antenna Length (cm) in the displayed units, then use the calculated values as the first engineering target for this dipole antennas design or analysis.
Design Notes
This dipole antennas calculation is based on Rr = 20π²(L/λ)² , L ≤ λ/10. Real-world accuracy depends on factors such as material properties, losses, mounting, nearby conductors, ground interaction, feed-line effects, and construction tolerance. Confirm the final system with measurement or simulation.
Build and Tuning Notes
Apply the short dipole antenna result as an initial target, then validate it in the intended installation. Keep the physical layout and feed arrangement consistent while testing, change one parameter at a time, and record the measured outcome before making another adjustment.
Frequently Asked Questions
What does the Short Dipole Antenna calculate?
Calculate wavelength, radiation resistance and gain of an electrically short dipole antenna. The calculation provides an initial design value based on Frequency (MHz), Antenna Length (cm).
Which inputs are needed for the Short Dipole Antenna?
Enter Frequency (MHz), Antenna Length (cm) using the displayed units. Each value directly affects the calculated result, so confirm the unit and operating conditions before running the calculation.
How accurate is this short dipole antenna?
It follows Rr = 20π²(L/λ)² , L ≤ λ/10. It is accurate for the formula assumptions, but installed performance can change because of materials, loss, environment, mounting, nearby objects, and measurement uncertainty.
What should I do after using the Short Dipole Antenna?
Compare the result with the practical constraints of your dipole antennas system, then validate the completed design with appropriate measurement equipment or simulation.
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.