5.8GHz Tx/Rx Circular Polarized Antenna RP-SMA

5.8GHz Tx/Rx Circular Polarized Antenna RP-SMA is an essential component for any FPV (First Person View) system, whether you’re building a racing drone or a long-range aerial video platform. Unlike traditional linear antennas, this circular polarized design dramatically reduces video signal dropouts caused by multipath interference—a common issue when flying near objects like trees and buildings. The RP-SMA connector ensures wide compatibility with a range of 5.8GHz video transmitters and receivers, providing a reliable and clear video link for your flights.

Key Features:

• Circular Polarization: Provides superior signal quality and minimizes video dropout by effectively rejecting reflected signals.
• Wide Frequency Range: Operates efficiently across the entire 5.8GHz band (5700-5900MHz), accommodating various FPV channels.
• Lightweight and Compact: Its low profile and durable design make it ideal for the demanding and weight-sensitive environment of drones.
• High Gain and Low SWR: Offers excellent signal strength and efficiency, ensuring maximum power transmission from your video transmitter.
• Durable Construction: Features a robust, crash-resistant radome (casing) that protects the antenna elements from impact damage.

Technical Specifications:

• Frequency Range: 5.7 GHz to 5.9 GHz
• Gain: Typically 2.5 dBi to 3 dBi
• Polarization: Circular (either LHCP or RHCP)
• SWR: Less than 1.5
• Connector Type: RP-SMA Male
• Input Impedance: 50 Ω

Mechanical Specifications:

• Antenna Type: Cloverleaf or Pagoda
• Casing: Robust, injection-molded radome (e.g., PC, ABS)
• Cable: Flexible coaxial cable (e.g., RG316)
• Mounting: Screws directly onto an RP-SMA female connector.

Dimensions:

• Antenna Height: ~60 mm to 80 mm
• Radome Diameter: ~25 mm
• Weight: ~8 g to 15 g (varies by model)

Pinout and Wiring:

• Connector: RP-SMA Male (Reverse Polarity Sub-Miniature Version A)
• Connection Note: This antenna features an RP-SMA male connector and is ready to screw directly onto an RP-SMA female port on your video transmitter or receiver. Ensure your antennas on both the transmitter and receiver have the same polarization (both LHCP or both RHCP) for optimal performance.

Datasheet Reference:

• While these antennas typically do not have a standard datasheet, you can refer to the manufacturer’s documentation for the RP-SMA connector and general FPV antenna theory for a deeper technical understanding.

Applications:

• FPV Drones: Provides a clear and stable video feed for racing, freestyle, and cinematic flights.
• RC Aircraft: Upgrades the video link on remote-controlled planes and helicopters.
• Wireless Video Systems: Improves signal reliability for other 5.8GHz video transmission setups.
• Robotics: Enables robust video links for mobile robots.

Equivalent Models:

• Linear Dipole Antenna: A more basic antenna with a simple wire design, often included with budget kits. It is highly susceptible to multipath interference.
• FPV Patch Antenna: A directional, high-gain antenna used on the receiver for long-range flying, often paired with an omnidirectional antenna.

Package Includes:

• 1 x 5.8GHz Tx/Rx Circular Polarized Antenna RP-SMA