1. What is the Dipole Antenna Factor?

The dipole antenna factor is a parameter that relates the electric field strength to the voltage received at the antenna terminals. It is a crucial parameter in electromagnetic compatibility (EMC) testing and antenna measurements.

2. How Does the Calculator Work?

The calculator uses the dipole antenna factor equation:

Where:

• \( AF \) — Antenna factor (dB/m)
• \( f \) — Frequency (MHz)

Explanation: This equation calculates the antenna factor for a standard dipole antenna based on the operating frequency.

3. Importance of Antenna Factor Calculation

Details: Accurate antenna factor calculation is essential for precise electromagnetic field measurements, EMC testing compliance, and antenna system design and calibration.

4. Using the Calculator

Tips: Enter frequency in MHz. The value must be valid (frequency > 0).

5. Frequently Asked Questions (FAQ)

Q1: What is the typical range of antenna factors?
A: For dipole antennas, antenna factors typically range from about 10 to 40 dB/m depending on frequency.

Q2: How does antenna factor relate to antenna gain?
A: Antenna factor and antenna gain are inversely related. A lower antenna factor generally corresponds to higher antenna gain.

Q3: Why is the antenna factor important in EMC testing?
A: The antenna factor is used to convert measured voltages at the antenna terminals to actual field strengths, which is critical for compliance testing with EMC standards.

Q4: Does this equation apply to all antenna types?
A: No, this specific equation is for standard dipole antennas. Other antenna types have different antenna factor characteristics.

Q5: How accurate is this calculation?
A: This provides a theoretical value for an ideal dipole. Actual antenna factors may vary due to construction details, ground plane effects, and other environmental factors.