User manual

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ImmersionRC 5.8GHz SpiroNET omni directional antenna

Instruction manual

Specifications

Typical impedance at 5.8GHz > 50 Ohm

SWR > <1.35 at 5.8GHz

Gain > 0.95dBic

Polarization > Left- or Right-hand circular (LHCP, RHCP)

Radiation pattern > 360-degrees

Configuration > 4-lobe skew planar

Dimensions (LxWxH) > 108x34x34mm

Weight (Grams) > 12 grams

Connector > SMA male, or RP-SMA female

Fig 1.

ImmersionRC 5.8GHz SpiroNET RHCP omni directional antennas.

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ImmersionRC 5.8GHz SpiroNET omni directional antenna Instruction manual Specifications Typical impedance at 5.8GHz SWR Gain Polarization Radiation pattern Configuration Dimensions (LxWxH) Weight (Grams) Connector > > > > > > > > > 50 Ohm <1.35 at 5.8GHz 0.95dBic Left- or Right-hand circular (LHCP, RHCP) 360-degrees 4-lobe skew planar 108x34x34mm 12 grams SMA male, or RP-SMA female Fig 1. ImmersionRC 5.8GHz SpiroNET RHCP omni directional antennas. www.immersionrc.com info@immersionrc.
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Overview The ImmersionRC 5.8GHz SpiroNET omni directional antenna was developed to offer better multi-path rejection* than conventional whip antennas. The principle behind this hinges on the use of circular polarization rather than linear polarization. Circular polarization has the benefit that reflections change polarization and see a natural attenuation of up to >20dB due to the polarization mismatch. This is an effective means of canceling the negative effects of multi-path interference*.
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*Multi-path interference is the process in which reflections of the radio frequency signal emitted from the transmitter antenna off of solid objects sum at the receiver's antenna with the directly transmitted signal. Because these reflections are 180-degrees out of phase they can (partially) cancel out the signal that travels from the transmitter antenna directly. This causes for visible 'dropouts' in the audio/video signal.