ADJUSTABLE ANTENNA FEED NETWORK WITH INTEGRATED PHASE SHIFTER

摘要

A device for feeding signals between a common line (10) and two or more ports (20-28), by including a branched network of feedlines (1-18) that couple the common line with the ports. A dielectric member (47a, 47b) is mounted adjacent to the network and can be moved to synchronously adjust the phase relationship between the common line and one or more of the ports. The feedlines and the dielectric member have transformer portions (11, 12, 29)&(91, 93) of varying widths for reducing reflection of signals passing through the network.