Yagi Antenna Designer
Yagi Antenna Designer Calculator
This specialized calculator assists in designing Yagi-Uda antennas, a popular directional antenna type widely used in amateur radio, television reception, and other RF applications. The tool simplifies complex antenna design calculations by automating key parameters based on user inputs.
Key Features:
- Calculates element lengths (reflector, driven element, and directors)
- Determines optimal element spacing
- Estimates gain and front-to-back ratio
- Supports multiple frequency bands
- Provides impedance matching suggestions
Usage Guidance:
To use this calculator effectively:
- Enter your target frequency in MHz
- Select desired number of elements
- Choose material type (affects velocity factor)
- Specify boom length constraints if applicable
- Click "Calculate" to generate design parameters
Example Calculation:
| Parameter | Value |
|---|---|
| Frequency | 146 MHz (2m amateur band) |
| Elements | 5 (1 reflector, 1 driven, 3 directors) |
| Reflector Length | 1.05 meters |
| Driven Element Length | 0.98 meters |
| Director Spacing | 0.15-0.25 wavelength intervals |
Technical Notes:
The calculator uses standard Yagi design formulas accounting for: end effect (typically 95% velocity factor for aluminum), mutual coupling between elements, and trade-offs between gain and bandwidth. Results should be considered theoretical starting points - real-world tuning may be required.
Applications:
- Amateur radio antenna projects
- TV signal reception optimization
- RF direction finding systems
- Wireless link setups