900 MHz Biquad Antenna Frame (3D Printable)
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A precision 3D printed support frame for a 900 MHz biquad antenna.
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- Printables
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- Electronics
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- Creative Commons — Attribution — Noncommercial — Share Alike
This model is a 3D printable frame designed specifically for a 900 MHz biquad antenna.
It provides accurate geometry and stable mechanical support for the antenna elements, ensuring consistent spacing and alignment, which is critical for reliable RF performance.
The antenna geometry was calculated using an online Kharchenko (biquad) antenna calculator, based on standard theoretical formulas and adapted for 900 MHz operation.
For the radiating elements, approximately 700 mm of copper wire with a diameter of 1.6 mm was used in the reference build.
The frame is designed for non-conductive 3D printing materials such as PLA, PETG, or ABS to minimize detuning and unwanted RF interference.
It features a dedicated groove for the antenna wire, which allows precise positioning of the conductor, simplifies assembly, and helps maintain repeatable antenna geometry and performance.
This design is suitable for:
DIY RF and antenna experiments
Long-range wireless communication
Telemetry, LoRa, FPV ground stations, and other 900 MHz applications
Amateur radio and educational projects
The model includes only the plastic frame.
Metal wire elements, reflector, coaxial cable, and mounting hardware are not included and must be provided and assembled by the user according to their specific antenna configuration.
Note: Final antenna performance depends on accurate wire bending, reflector dimensions, and feed point matching. It is recommended to tune and test the antenna after assembly.