US 12,170,512 B2
Passive phase shifter for W band operation based on slow-wave tlines
Olivier Tesson, Bretteville l'Orgueilleuse (FR)
Assigned to NXP B.V., Eindhoven (NL)
Filed by NXP B.V., Eindhoven (NL)
Filed on Aug. 15, 2022, as Appl. No. 17/819,794.
Claims priority of application No. 21306278 (EP), filed on Sep. 16, 2021.
Prior Publication US 2023/0083719 A1, Mar. 16, 2023
Int. Cl. H03H 7/20 (2006.01); H01Q 1/52 (2006.01); H01Q 3/30 (2006.01); H03H 17/08 (2006.01); H01P 1/18 (2006.01)
CPC H03H 7/20 (2013.01) [H01Q 1/526 (2013.01); H01Q 3/30 (2013.01); H03H 17/08 (2013.01); H01P 1/184 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A passive phase shifter comprising:
a ground shield;
a pair of ground walls electrically connected to the ground shield, the ground walls having a first height above the ground shield; and
a signal line positioned between the ground walls and electrically isolated from the ground shield, the signal line comprising;
an intermediate signal line separated 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 by one or more conductive vias; and
a plurality of metal blocks positioned between and electrically isolated from the intermediate signal line and the top signal line;
wherein the ground shield comprises a plurality of elongate slots extending perpendicular to a longitudinal axis of the signal line; and
a first and a second metal block of the plurality of metal blocks are electrically coupled in a first pair; and
the first pair of metal blocks and a second pair of metal blocks are electrically connected to a first switch, the second pair of metal blocks comprising a third metal block and a fourth metal block of the plurality of metal blocks.