Abstract: A multi-band generalized antenna architecture using two or more types of antenna element is presented. Linear arrays of a first type of antenna element are used for one or more frequencies while a second antenna element type is used for other frequencies. The second type of antenna element is located between the linear arrays of the first antenna element type. The second antenna element type may be arranged in a staggered configuration or they may be arranged as linear arrays as well. The first type of antenna element may be a patch antenna element while the second type of antenna element may be a dipole antenna element. The patch antenna element may be used for high band frequencies while the dipole antenna element may be used in low band frequencies. The spacing in vertical direction is not equal to minimize the effect of arrays on each other.

Abstract: An antenna array with control circuitry placed at a front of the antenna array and between the antenna elements. By locating the azimuth beamforming network control circuitry on the front of the array and between antenna elements, the antenna elements and the other components can be coupled to the control circuitry without using cables. This leads to a reduction in the number of cable connections and to a reduction in size and weight of the resulting antenna array. The ABFN control circuitry is also used to control the beams formed from each row and not from each column as is usually done.

Abstract: An antenna array with control circuitry placed at a front of the antenna array and between the antenna elements. By locating the azimuth beamforming network control circuitry on the front of the array and between antenna elements, the antenna elements and the other components can be coupled to the control circuitry without using cables. This leads to a reduction in the number of cable connections and to a reduction in size and weight of the resulting antenna array. The ABFN control circuitry is also used to control the beams formed from each row and not from each column as is usually done.

Abstract: A multi-band generalized antenna architecture using two or more types of antenna element is presented. Linear arrays of a first type of antenna element are used for one or more frequencies while a second antenna element type is used for other frequencies. The second type of antenna element is located between the linear arrays of the first antenna element type. The second antenna element type may be arranged in a staggered configuration or they may be arranged as linear arrays as well. The first type of antenna element may be a patch antenna element while the second type of antenna element may be a dipole antenna element. The patch antenna element may be used for high band frequencies while the dipole antenna element may be used in low band frequencies. The spacing in vertical direction is not equal to minimize the effect of arrays on each other.

Abstract: A fiber optic cable routing device is provided for use in a fiber optic connection unit. The fiber optic connection unit may include a pair of longitudinally extending and spaced apart frame members; and a support structure mounted between the pair of frame members and adapted for connection to a plurality of vertically oriented circuit packs. The fiber optic cable routing device is disposed below the plurality of circuit packs and mounted between the pair of frame members. The cable routing device includes a faceplate and a plurality of spaced apart separating members extending outwardly from the faceplate. The plurality of separating members define a plurality of channels therebetween for routing fiber optic cable towards the circuit packs, such that each channel provides a minimum bend radius to protect the fiber optic cable extending therethrough.

Abstract: A fiber optic cable routing device is provided for use in a fiber optic connection unit. The fiber optic connection unit may include a pair of longitudinally extending and spaced apart frame members; and a support structure mounted between the pair of frame members and adapted for connection to a plurality of vertically oriented circuit packs. The fiber optic cable routing device is disposed below the plurality of circuit packs and mounted between the pair of frame members. The cable routing device includes a faceplate and a plurality of spaced apart separating members extending outwardly from the faceplate. The plurality of separating members define a plurality of channels therebetween for routing fiber optic cable towards the circuit packs, such that each channel provides a minimum bend radius to protect the fiber optic cable extending therethrough.

Abstract: An electronic circuit board enclosure comprised of a planar member having dimensions at least equal to dimensions of the circuit board, first pillars fixed to at least one side of the planar member and extending orthogonally to the planar member above the planar member, apparatus for aligning and fixing bottoms of second pillars of another circuit board enclosure to tops of the first pillars, apparatus for fastening a first circuit board to and above the planar member, and locating apparatus for precisely locating the fastening position of the circuit board to the planar member relative to the first pillars, whereby the position of the first circuit board can be located precisely relative to another circuit board fastened to another circuit board enclosure.