Abstract: An apparatus which is helpful in teaching a person how to ride a bicycle. The apparatus is connected to a bicycle and has balance rods extending from the apparatus. The apparatus increases the ability of the new rider to balance. The balance rods can be adjusted by changing the length the balance rods are extended, where the length of extension is decreased to reduce the effect of the apparatus as the new rider learning to ride the bicycle becomes more proficient.

Abstract: Systems and methods for operating an antenna providing a coverage area using beamforming and carrier aggregation techniques. The proposed system aims to optimize the use of carrier aggregation for beamforming systems. The system may include a beamforming module coupled to first array and second arrays of radiating elements, the first array being configured to provide wireless coverage on a first frequency carrier in a first coverage area, and the second array being configured to provide wireless coverage on a second frequency carrier in a second coverage area. The beamforming module may be configured to receive one or more indicators associated with one or more user equipments (UEs) in the coverage area. Based on the one or more indicators, the beam-forming module may be configured to dynamically adjust, in the RF domain, at least one of a location of the second coverage area and a size of the second coverage area.

Abstract: A dual polarized variable beam tilt antenna having a superior Sector Power Ratio (SPR). The antenna may have slant 45 degree dipole radiating elements including directors, and may be disposed on a plurality of tilted element trays to orient an antenna boresight downtilt. The directors may be disposed above or about the respective dipole radiating elements. The antenna has a beam front-to-side ratio exceeding 20 dB, a horizontal beam front-to-back ratio exceeding 40 dB, a high-roll off, and is operable over an expanded frequency range.

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.

Abstract: A dual polarized variable beam tilt antenna having a superior Sector Power Ratio (SPR). The antenna may have slant 45 dipole radiating elements including directors, and may be disposed on a plurality of tilted element trays to orient an antenna boresight downtilt. The directors may be disposed above or about the respective dipole radiating elements. The antenna has a beam front-to-side ratio exceeding 20 dB, a horizontal beam front-to-back ratio exceeding 40 dB, a high-roll off, and is operable over an expanded frequency range.

Abstract: A dual polarized variable beam tilt antenna (10) having a plurality of offset element trays (12) each supporting pairs of dipole elements (14) to orient the dipole element pattern boresight at a downtilt. The maximum squint level of the antenna is a consistent downtilt off of boresight and which is at the midpoint of the antenna tilt range. The antenna provides a high roll-off radiation pattern through the use of Yagi dipole elements configured in this arrangement, having a beam front-to-side ratio exceeding 20 dB, a horizontal beam front-to-back ratio exceeding 40 dB, and is operable over an expanded frequency range.