US 12,003,037 B2
Base station antenna and phase-shifting and feeding device thereof
Mingchao Li, Guangzhou (CN); Guosheng Su, Guangzhou (CN); and Gengfei Wu, Guangzhou (CN)
Assigned to Comba Telecom Technology (Guangzhou) Limited, Guangzhou (CN)
Appl. No. 17/426,837
Filed by Comba Telecom Technology (Guangzhou) Limited, Guangzhou (CN)
PCT Filed Nov. 4, 2019, PCT No. PCT/CN2019/115384
§ 371(c)(1), (2) Date Jul. 29, 2021,
PCT Pub. No. WO2020/155724, PCT Pub. Date Aug. 6, 2020.
Claims priority of application No. 201910090089.8 (CN), filed on Jan. 30, 2019.
Prior Publication US 2022/0123467 A1, Apr. 21, 2022
Int. Cl. H01Q 3/36 (2006.01); H01Q 1/48 (2006.01); H01Q 1/50 (2006.01)
CPC H01Q 3/36 (2013.01) [H01Q 1/48 (2013.01); H01Q 1/50 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A phase-shifting and feeding device, comprising:
a metal cavity that is a U-shaped groove structure with an opening at one side;
a phase-shifting circuit mounted in the metal cavity, the phase-shifting circuit having signal terminals; and
a feeding network board that includes a substrate having a first side facing the metal cavity and a second side facing away from the metal cavity, a ground plane formed on at least one of the first and second sides of the substrate and a feeding circuit formed on one of the first and second sides of the substrate, the ground plane forming a base layer for the feeding circuit, and the substrate covering the opening,
wherein the metal cavity is electrically connected to the ground plane to cooperate with the ground plane to form a shielding cavity for receiving the phase-shifting circuit, and the signal terminals are electrically connected to the feeding circuit, and
a pin protruding toward the feeding network board is formed at an edge of the opening, the substrate is provided with a metalized slot electrically connected to the ground plane, and the pin is adapted to be inserted into the metalized slot.