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Circular Wireless 1.2GHz Circular Patch Antenna
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We proudly carry the Circular Wireless, hand tuned and impedance matched antennas.
Patch antennas are designed for maximum range, having a tighter focus than an Omni antenna, also have a broader “tune” range and have great gain across the entire 1.2GHz band. At 8.6dB, it doesn’t give the ultimate range of the HELIAXIAL12, but its compact size and its 90° wide beam make it ideal for compact, lightweight ground stations, and it still provides crystal clear video up to 30 Km (when coupled with a >500mW VTx with a SPW12). It is designed to be directly attached to a tripod, with the video receiver velcroed in the back. The back plate has got a drilled hole with a 1/4 Withworth thread for direct attachment to a tripod
Patch antennas have a narrower focus for further range, so it's recommended to be used in a diversity system and or antenna tracker setup for the ultimate in video lock and range.
This circularly polarized directive antenna is designed to be used in the video receiver. Combined with a Skew Planar Wheel at the transmitter offers around 30Km range.
The antenna is Right Hand Circular Polarized, and is supplied with SMA female connector, and a 90º angled SMA male-male pigtail, with the length needed to connect with a video receiver attached with Velcro in the back of the antenna.
This is the graph of the Return Loss parameter of the CPATCH12 antenna, designed to cover the channels from 1200 to 1330 MHz. It is possible to use it at 1360MHz channel, but a small reduction in performance should be expected.
It has a directive radiation pattern, with a maximum gain of 8.6dB, and a beamwidth of +/-45° (total beam width of 90°) in the XZ and YZ plane.
This is especially important in circular polarization. In a simple way: the difference between co-polar component (blue, right hand circular in this case) and cross-polar (red, left hand circular) is the attenuation that will introduce the antenna to capture the reverse polarization, which will come from the reflected signal that we want to avoid to reduce multipath. In these antennas is bigger than 12dB in all cases, which means that the reflected signal will reach the emitter attenuated at least 12dB with respect to the desired signal, which is great to prevent interferences with the desired signal.
Style: Patch Antenna
Polarization: Right hand circular polarization
Connector: SMA female connector straight
SMA male-male angled pigtail.