Trimble GNSS Choke Ring Antenna

When multipath signals are present, Trimble's geodetic antennas reduce the effects of the signals. The extended ground plane of Trimble's geodetic antennas impedes multipath signals that reflect off of surfaces below the antenna from entering the receiving element. The scientific standard Jet Propulsion Laboratories' (JPL) choke ring design combined with a Trimble-exclusive Dorne & Margolin dipole element, reflect these signals away from the antenna.

In addition to the new choke ring antenna, Trimble also offers the Zephyr Geodetic 2 antenna which provides an alternate means to achieving geodetic-quality results. It delivers frequency-independent multipath mitigation and its small, lightweight design with built-in radome allows the antenna to be mounted on lighter structures. In addition, the Trimble Zephyr Geodetic 2 antenna's low-profile provides greater stability from reduced wind resistance.