公开(公告)号：US10469785B1

公开(公告)日：2019-11-05

申请号：US16362593

申请日：2019-03-22

Applicant: CABLE VISION ELECTRONICS CO., LTD

Inventor： Chiang-Po Yang

IPC: H04N5/44 ,  H04N7/10 ,  H05K1/18

Abstract: A cable television system with printed-circuit-board-layout components receives a cable television signal. The cable television system includes a low pass filter apparatus. The low pass filter apparatus includes a printed circuit board, a plurality of low pass filters and at least one grounded metal wall. Each of the low pass filters includes a low-pass-side inductor and a low-pass-side capacitor. At least two of the low-pass-side inductors of the low pass filters are manufactured on the printed circuit board by a printed-circuit-board-layout technology to form at least two low-pass-side printed-circuit-board-layout inductors. The at least one grounded metal wall blocks a magnetic interference between the low-pass-side inductors of the low pass filters. The low pass filter apparatus filters out a signal having a frequency above 1 GHz.