How to Use the Calculator
- Enter the inductance value of your antenna trap in Henrys (H). This is typically provided in the trap's specifications.
- Enter the capacitance value of your antenna trap in Farads (F). This is also typically provided in the trap's specifications.
- Click the "Calculate" button to compute the resonant frequency.
- The results will be displayed in Hertz (Hz), Megahertz (MHz), and Kilohertz (kHz).
Working Principle
An antenna trap is a device used to selectively pass or block signals at a specific frequency. It typically consists of an inductor and a capacitor connected in parallel or series, which resonates at a particular frequency determined by the formula:
f = 1 / (2π√(LC))
Where:
- f is the resonant frequency in Hertz (Hz)
- L is the inductance in Henrys (H)
- C is the capacitance in Farads (F)
- π is the mathematical constant Pi (approximately 3.14159)
- √ represents the square root function
Applications
Antenna traps are commonly used in:
- Multi-band antennas to allow operation on multiple frequencies while rejecting others
- Antenna tuners to match impedances between different antenna systems
- RF (Radio Frequency) circuits for signal filtering and selection