Abstract: An antenna system may include a base having an opening therein, and a plurality of swing arms each having a concave elongate shape and opposing ends pivotally connected to the base to permit a swinging motion within the opening of the base. The swing arms may be transverse to one another thereby defining an overlap area between the swing arms. The antenna system may further include a respective swing arm positioner connected between the base and each swing arm. An antenna carriage may be movable along the swing arms and which remains at the overlap area between the swing arms. A positioning controller may be connected to each swing arm positioner, and an antenna may be connected to the antenna carriage.

Abstract: A phased array antenna includes a plurality of subarray lattices connected together in a linear configuration and forming a substantially rectangular aperture. Each subarray lattice is clocked progressively to obtain an aperiodic aperture and reduce grating lobes.

Abstract: A phased array antenna may include a plurality of antenna elements, at least one respective phase shifter connected to each antenna element, and at least one respective gain element connected to each antenna element. The phased array antenna may further include at least one controller for determining and controlling both phases and gains of the phase shifters and gain elements, respectively, to provide beamsteering in a first direction for a signal of interest. The controller may also iteratively determine and control phases of the phase shifters to provide a null in a second direction for a signal not of interest, and without determining or controlling gains of the gain elements.

Abstract: A phased array antenna may include a substrate and an array of antenna elements carried thereby, and the antenna elements may be arranged along an imaginary spiral. The antenna may further include at least one control element connected to each antenna element, and at least one controller serially communicating with the control elements so that updated control data for beam steering is sequentially implemented by the control elements to thereby cause a gradual change in beam steering.