Antenna Length Calculator
Physics & EngineeringCalculate the quarter-wave antenna length for a given radio frequency.
Quarter-Wave Antenna Length
The ideal quarter-wave antenna length for this frequency, a common simple antenna design, in meters.
Full Wavelength
2.055
The full wavelength of a radio wave at this frequency, in meters.
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Creators
Odeh Ahwal0people find this calculator helpful
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Helpful
Saved
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Physics & Engineering calculators
Frequently Asked Questions
Why is 300 used as a constant in this formula?
300 is an approximation of the speed of light in meters per microsecond, used in this simplified formula when frequency is given in megahertz, providing a convenient practical wavelength calculation for radio applications.
What is a quarter-wave antenna?
A quarter-wave antenna, also called a ground plane or whip antenna, is one of the simplest and most common antenna designs, with a length equal to one quarter of the wavelength of the target frequency.
Does the actual physical antenna length always exactly match the calculated theoretical length?
Real-world antennas often use a slightly shorter physical length than the theoretical calculation, commonly around 95 percent of the calculated value, due to a velocity factor effect from the antenna material and surrounding environment.
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