Antenna positioners can be rotational with single or multiple axes or translational in X, Y, Z co-ordinates. MI Technologies offers positioners for every test requirement. They are designed for configurability and are rugged, reliable and have a high capacity. All of MI's positioners are controllable by the MI-710C Family of Integrated Position Controllers.
MI-51000 Family of Azimuth Positioners
The MI-51000 Family of Azimuth Positioners fall into two principle categories: medium-duty and heavy-duty. The MI-51050 and MI-51051 support medium loads up to 2,000 lbs while the MI-51150 through MI-51850 models provide precision mounting for test fixtures and antennas supporting loads up to 400,000 lbs.
MI-53000 Family of Azimuth-over-Elevation Positioners
The MI-53000 Family of Azimuth-over-Elevation Positioners has two orthogonal axes which permit the simulation of spherical coordinate probe movement. This family of positioners offers a combination of the most desirable operational characteristics of the previously described azimuth positioners.
MI-54000 Family of Elevation-over-Azimuth Positioners
The MI-54000 Family of Elevation-over-Azimuth Positioners permits the rotation of elevation at fixed positions of azimuth. The MI-54000 Family of Elevation-over-Azimuth Positioners is assembled in the (standard) eccentric configuration. All except the MI-54050 can easily be converted to the concentric configuration during installation.
MI-55000 Family of Azimuth-over-Elevation-over-Azimuth Positioners
The MI-55000 Family of Azimuth-over-Elevation-over-Azimuth Positioners is our most versatile family of positioners. The lower azimuth axis on these positioners allows precise pointing of the upper azimuth over elevation axes. Both eccentric and concentric configurations are available for most models. Note that an installed RF path through each positioner can be ordered as an option.
MI-56000 Family of Polarization Positioners
The MI-56000 Family of Polarization Positioners is available to support maximum loads of up to 3,000 lbs. The bolt-hole pattern on the positioner turntable is compatible with MI Technologies transmitting antennas and the mounting flanges for MI Technologies standard gain horns. A throughcenter hole facilitates installation of coaxial cable, waveguide, rotary joints, and RF components.
MI-6111 Family of Rotary Positioners
The MI-6111 Family of Rotary Positioners is designed to fill roles in three major applications: azimuth positioning, antenna polarization positioning and compact range feed polarization positioning. For each of these applications a variation of the basic design of the MI-6111B has been implemented. The compact range configuration adds a special tilt housing and tower.
MI Technologies offers an encoder option for many positioner models that provides an axis position accuracy of 0.005° worst case peak error with 0.0001° resolution. The increased accuracy and resolution enhances total antenna measurement system performance beyond conventional synchro transducers and optical encoding techniques.
MI-8100 Family of Precision Two-Axis Gimbal Positioners
Incorporating direct drive motors and extremely accurate encoders, the MI-8100 Gimbals provide superb responsiveness and pointing accuracy. The MI-8120 Two-Axis Gimbal offers extreme accuracy by virtue of its direct drive motors that are structurally coupled to the encoders and the antenna/ counterweight system. Flexible couplings are absent, as are gears, timing belts and virtually all the conventional sources of positioning error in a mechanical drive. System stiffness is thereby greatly enhanced, and backlash is completely eliminated.