Antenna Loop Calculator
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A loop antenna is used in many radio communication applications, where the size and performance of the antenna depend on the frequency and loop size. This calculator helps users calculate the wavelength, loop circumference, and the number of loops needed for a specific frequency and antenna diameter.
Formula
The key formulas are:

Wavelength (λ):
\[ \lambda = \frac{c}{f} \] Where \(c\) is the speed of light (299,792,458 m/s) and \(f\) is the frequency in Hz. 
Circumference (C):
\[ C = \pi \times \text{Diameter} \] 
Number of Loops:
\[ \text{Number of Loops} = \frac{\lambda}{C} \]
Example Calculation
For a frequency of 14 MHz and a loop diameter of 1 meter:
 Wavelength:
\[ \lambda = \frac{299792458}{14 \times 10^6} \approx 21.41 \text{ meters} \]  Loop Circumference:
\[ C = \pi \times 1 = 3.1416 \text{ meters} \]  Number of Loops:
\[ \frac{21.41}{3.1416} \approx 6.82 \]
Importance
This calculator is vital for amateur radio operators, engineers, and hobbyists designing loop antennas for optimal performance at specific frequencies.