US 12,463,310 B2
Phase shifting device with slidable plate for signal transmission path length adjustment, usable in an antenna unit or base station
Yuesong Wang, Beijing (CN); Zhiming Tian, Beijing (CN); Rui Ma, Beijing (CN); Xinfeng Zhang, Beijing (CN); and Jianlan Li, Beijing (CN)
Appl. No. 18/548,146
Filed by Telefonaktiebolaget LM Ericsson (publ), Stockholm (SE)
PCT Filed Sep. 14, 2021, PCT No. PCT/CN2021/118273
§ 371(c)(1), (2) Date Aug. 28, 2023,
PCT Pub. No. WO2022/227371, PCT Pub. Date Nov. 3, 2022.
Claims priority of application No. PCT/CN2021/091606 (WO), filed on Apr. 30, 2021.
Prior Publication US 2024/0145892 A1, May 2, 2024
Int. Cl. H01P 1/18 (2006.01); H01P 5/02 (2006.01); H01Q 3/32 (2006.01); H01Q 21/00 (2006.01); H01Q 1/24 (2006.01)
CPC H01P 1/184 (2013.01) [H01P 5/028 (2013.01); H01Q 3/32 (2013.01); H01Q 21/0075 (2013.01); H01Q 1/246 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A phase shifting device comprising:
a power divider comprising an input inlet for an input signal, a first output outlet connected with an impedance member having a system impedance, and a second output outlet connected with a phase shifter; and
the phase shifter comprising a first plate and a second plate slidable relative to the first plate, wherein two parallel microstrip lines are provided on a first surface of the first plate, and an adjusting member is provided on a second surface of the second plate that faces the first surface of the first plate;
wherein the adjusting member is configured to adjust a length of a total signal transmission path that is from one of the two parallel microstrip lines to the other of the two parallel microstrip lines via an intermediate signal transmission path introduced by the adjusting member, or to prohibit the input signal from transmitting to the second output outlet, according to a position of the second plate relative to the first plate when the second plate slides relative to the first plate;
wherein when the second plate slides relative to the first plate so that the adjusting member can adjust the length of the total signal transmission path, the adjusting member introduces an infinite impedance at two coupling points on the two parallel microstrip lines where the intermediate signal transmission path is coupled to the two parallel microstrip lines;
wherein the adjusting member introduces another infinite impedance at two first points on the second plate, and a distance between each of the two coupling points and a corresponding first point is an integral multiple of half-wavelength.