公开(公告)号：US20250015502A1

公开(公告)日：2025-01-09

申请号：US18523106

申请日：2023-11-29

Applicant: Alpha Networks Inc.

Inventor： Pao-Wei Lin ,  Yao-Jen Chen

IPC: H01Q9/04

Abstract: A broadband dual-feed circularly-polarized antenna includes first, second and third substrate modules. The first substrate module includes a parasitic element, and a radiator disposed below the parasitic element. The second substrate module is stacked below the first substrate module, and is provided with first and second slots. The third substrate module is stacked below the second substrate module, and includes first and second feed lines. When the antenna operates in a transmit mode, signals fed to the first and second feed lines are electromagnetically coupled to the first and second slots, then to the radiator, and finally to the parasitic element, and the parasitic element transmits an electromagnetic wave. When the antenna operates in a receive mode, the parasitic element receives an electromagnetic wave, and the electromagnetic wave is electromagnetically coupled to the radiator, then to the first and second slots, and finally to the first and second feed lines.

公开(公告)号：US12142825B2

公开(公告)日：2024-11-12

申请号：US18107317

申请日：2023-02-08

Applicant: Alpha Networks Inc.

Inventor： Yao-Jen Chen ,  Pao-Wei Lin ,  Chia-Hsien Chen

IPC: H01Q1/42 ,  H01Q1/40

Abstract: A radome for protecting a radar device is disposed in the transmission path of signals to/from the radar device. The radome includes a shell; a first circuit board disposed at a side of the shell facing a radar device to be protected, and configured with a first inner circuit ring and a first outer circuit ring facing toward the shell; a second circuit board disposed between the first circuit board and the shell, and configured with a second inner circuit ring and a second outer circuit ring facing toward the shell; a first insulation layer disposed between the first circuit board and the second circuit board; and a second insulation layer disposed between the second circuit board and the shell. The first and second inner circuit rings are enclosed with and insulated from the first and second outer rings, respectively, and each of the circuit rings forms a closed loop.