A phase control device

摘要

The phase shifting circuit is used to feed signals to a phased array antenna unit. A shared set of phase shifting elements is connected via a switching matrix to the antenna elements. The phase shifting unit (60) has several phase shift elements (62) connected (64) in series. The elements can be passive or active. The switching circuit (52) has several switches (66) connected (67) to column terminals (72). They are also connected to common row lines (70). Each row is connected (76) to a junction between two phase shift elements. The antenna elements are connected to the column terminals with the other I/O terminal (74) at the shifter chain end.