Xtreem Cross goggles SET

Specyfication of Xtreem Cross-air:

Band: Raceband 5.8Ghz (VSWR <1.3)
Polarization: Circular
Antenna type: Directional
VSWR: <1.3
Gain: 10dbi
Beam width:70 degrees (up to 120 degrees at shorter ranges)
Polarization: RHCP or LHCP
Connector type: SMA or RP-SMA
Cable length: ~40mm
Overall antenna length: ~65mm

Specification of Prodrone Pagoda  antenna

Working Frequency: 5.8GHz
Omni directional antenna
Gain: 3 dBi
Antenna length: ~14cm
vSWR: lower than 1.3
Maximum power input: 50W
Connector: SMA or RP-SMA
Polarization: RHCP or LHCP

The Critical Role of Antenna Matching in 5.8 GHz Systems

Antenna matching is a fundamental aspect of wireless communication systems, especially in the 5.8 GHz frequency range. Properly matched antennas ensure maximum power transfer, minimize signal reflection, and enhance overall system efficiency. When antennas are tuned to operate within the same frequency range, they deliver consistent performance, reduce interference, and improve reliability.

The Problem with Mismatched Antennas

Consider two antennas:

• Antenna A: Tuned for 5640 MHz with a VSWR of 1.1 at this frequency. However, at 5900 MHz, its VSWR rises to 2.5, indicating significant impedance mismatch and signal reflection.

• Antenna B: Tuned for 5900 MHz with a VSWR of 1.1 at this frequency. At 5640 MHz, its VSWR increases to 2, leading to poor performance.

This mismatch causes several issues:

1. Signal Reflection and Loss: High VSWR at non-tuned frequencies results in reflected power, reducing the effective radiated signal and weakening communication range.

2. Transmitter Strain: Reflected power can damage the transmitter’s power amplifier (PA), increase heat generation, and reduce the lifespan of the device.

3. Inconsistent Performance: Operating across a range of frequencies (e.g., 5640–5900 MHz) becomes unreliable, as performance varies significantly depending on the antenna and frequency used.

The Impact of Axial Ratio

The axial ratio measures how well an antenna maintains circular polarization. A low axial ratio (close to 1 or 0 dB) indicates efficient circular polarization, while a high axial ratio leads to polarization loss.

• Mismatched antennas often exhibit poor axial ratios at non-tuned frequencies. For example, Antenna A might have an axial ratio of 1.5 dB at 5640 MHz but 3 dB at 5900 MHz.

• This degradation increases multipath interference, reduces signal strength, and can cause polarization mismatch between communicating devices.

Why Matching Matters

By ordering antennas tuned to the same frequency range (e.g., 5640–5900 MHz), you ensure:

• Consistent VSWR: Low VSWR (e.g., 1.1–1.5) across the entire range, minimizing signal reflection and maximizing power transfer.

• Optimal Axial Ratio: A stable axial ratio (e.g., < 2 dB) ensures efficient circular polarization and reduces interference.

• Transmitter Protection: Low reflected power safeguards the transmitter, improving efficiency and longevity.

• Cost Savings: Eliminates the need for additional tuning or replacements, reducing overall system costs.

As an antenna manufacturer, we specialize in delivering antennas precisely tuned to your requirements, ensuring seamless performance across the 5.8 GHz band.