Passive phase shifter based on W-band operation of slow-wave transmission line

An embodiment of a passive phase shifter includes: a ground shield; a pair of ground walls electrically connected to the ground shield and having a first height higher than the ground shield; and a signal line positioned between the ground walls and electrically isolated from the ground shield. The signal lines may include: an intermediate signal line separated by a second height above the ground shield; a top signal line separated from the intermediate signal line, at a third height above the ground shield, and electrically connected to the intermediate signal line through one or more conductive vias; and a plurality of blocks positioned between the intermediate signal line and the top signal line and electrically isolated from the intermediate signal line and the top signal line. 一种无源移相器的实施例包括：接地屏蔽件；一对接地壁，其电连接到所述接地屏蔽件，具有高于所述接地屏蔽件的第一高度；以及信号线，其定位在所述接地壁之间并且与所述接地屏蔽件电隔离。所述信号线可包括：中间信号线，其分离在所述接地屏蔽件上方第二高度；顶部信号线，其与所述中间信号线分离，处于所述接地屏蔽件上方的第三高度处，并且通过一个或多个导电通孔电连接到所述中间信号线；以及多个块，其定位在所述中间信号线与所述顶部信号线之间并且与所述中间信号线和所述顶部信号线电隔离。