Antenna Length Formula:
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Definition: This calculator determines the length of a full wave ground plane antenna based on frequency and the speed of light.
Purpose: It helps radio enthusiasts and engineers design antennas for specific frequencies.
The calculator uses the formula:
Where:
Explanation: The antenna length equals one wavelength, which is calculated by dividing the speed of light by the frequency.
Details: Proper antenna length ensures optimal signal transmission and reception at the desired frequency.
Tips: Enter the frequency in Hz and speed of light (default 3e8 m/s). All values must be > 0.
Q1: Why is the speed of light important in antenna design?
A: Radio waves travel at the speed of light, so this determines the wavelength at any given frequency.
Q2: What's a typical frequency range for this calculator?
A: It works for any RF frequency, commonly from 3 kHz to 300 GHz.
Q3: Is this length for the entire antenna or just one element?
A: This calculates the full wavelength length for each radiating element.
Q4: Should I adjust for velocity factor?
A: This calculates theoretical length. For practical antennas, you may need to apply a velocity factor (typically 0.95-0.97).
Q5: How do I convert to feet or inches?
A: Multiply meters by 3.281 for feet or 39.37 for inches.