Abstract: An antenna with adjustable tilt angle includes: a mounting structure; an antenna mount fixed to the mounting structure; an antenna mounted to the antenna mount, the antenna configured to produce an antenna beam; a remote electrical tilt (RET) unit operatively associated with the antenna to adjust a pointing tilt angle of the antenna beam; a tilt pointing direction sensor mounted to the antenna, the pointing direction tilt sensor configured to detect the a pointing angle of the antenna relative to a baseline standard; and a controller operatively connected with the RET unit and the pointing direction tilt sensor, the controller configured to receive signals from the pointing direction tilt sensor and transmit signals to the RET unit to adjust the tilt pointing angle of the antenna beam based on the detected angle of the antenna.

Abstract: In an embodiment, an apparatus for sensing soil characteristics comprises a circular wheel frame that is capable of rotation in an agricultural field; at least one first arcuate tread segment that is affixed to an outer rim of the wheel frame and constitutes a soil contacting bearing surface when the apparatus is in contact with soil; at least one recess in the outer rim of the wheel frame; a circuit board within the wheel frame and having at least a first receptacle that is radially aligned with the at least one recesses; at least one removable sensor comprising one or more first sensing elements, a first plug that mates to the first receptacle of the circuit board, and a second arcuate tread segment and configured to mount in the at least one recess with the second arcuate tread segment aligned with the first arcuate tread segment to form a continuous tread; a power supply coupled to the at least one removable sensor through the connector; means coupled to the power supply for wirelessly transmitting data o

Abstract: An antenna with adjustable tilt angle includes: a mounting structure; an antenna mount fixed to the mounting structure; an antenna mounted to the antenna mount, the antenna configured to produce an antenna beam; a remote electrical tilt (RET) unit operatively associated with the antenna to adjust a pointing tilt angle of the antenna beam; a tilt pointing direction sensor mounted to the antenna, the pointing direction tilt sensor configured to detect the a pointing angle of the antenna relative to a baseline standard; and a controller operatively connected with the RET unit and the pointing direction tilt sensor, the controller configured to receive signals from the pointing direction tilt sensor and transmit signals to the RET unit to adjust the tilt pointing angle of the antenna beam based on the detected angle of the antenna.

Abstract: A radio and antenna combination with 4×N MIMO on the downlink path, with antenna arrays spaced 1 wavelength apart, and N×4 MIMO (or SIMO) on the uplink path, with 3 to 10 wavelengths or more separation of the antenna arrays.

Abstract: A radio and antenna combination with 4×N MIMO on the downlink path, with antenna arrays spaced 1 wavelength apart, and N×4 MIMO (or SIMO) on the uplink path, with 3 to 10 wavelengths or more separation of the antenna arrays.

Abstract: A cellular communications antenna including sensors for determining position and/or orientation of the antenna. Position information may be obtained using, for example, a GPS receiver or by triangulation. Orientation information may be obtained using, for example, an electronic compass and/or gyroscope and/or an inclinometer. Position and/or orientation information may be utilised locally to control attributes of the antenna or may be communicated to a central controller which may control attributes of the antenna. Signals may be sent to a central controller to indicate that an attribute of the antenna is outside a desired range.

Abstract: There is provided a cellular antenna allowing mechanical azimuth adjustment in combination with adjustment of one or more other antenna attribute such as electrical down tilt, electrical beam width or electrical azimuth adjustment. An integrated control arrangement is provided which can utilise either serial, wireless or RF feed lines to convey communications. A multiband embodiment provides azimuth adjustment for both bands by utilising mechanical and electrical azimuth adjustment. Systems incorporating such antennas and methods of controlling them are also provided.