H - Electricity – 01 – Q
Patent
H - Electricity
01
Q
H01Q 3/22 (2006.01) H01P 1/18 (2006.01) H01Q 3/36 (2006.01)
Patent
CA 2261188
This invention discloses an adjustable, relatively small phase-shiftable network for an antenna array, which can be incorporated into a PCB distribution network. The network comprises a PCB distribution element (A) comprising a planar dielectric circuit board (2) supporting a pattern of conductive tracks (3). The conductive tracks and the dielectric circuit board form a transmission line network which splits a signal applied to a signal input terminal (I) into three paths that terminate respectively in three terminals (T, B and C) for feeding the input signal to Top (T), Bottom (B) and Centre (C) sections of a antenna array. The distribution element (A) is supported in a spaced relationship with a conductive ground plane (B). A moveable planar dielectric element (C) having a series of teeth (4, 5) along opposite edges, is slidably mounted over the top surface of the distribution element (A). The moveable dielectric element (C) is supported in a slidable manner by two rods (6, 7) attached to the ground plane (B). By moving the dielectric element, the phases in the top and bottom sections of the antenna array are changed in opposite directions so that the phase shift in one section is increased and the other section is decreased, which causes the radiating beam to tilt.
Alcatel
Robic
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