公开(公告)号：US20240080110A1

公开(公告)日：2024-03-07

申请号：US17901282

申请日：2022-09-01

Applicant: Applied Optoelectronics, Inc.

Inventor： Steven BLASHEWSKI

IPC: H04B17/00

CPC classification number: H04B17/0085

Abstract: A forward and reverse test point circuit with a switchable termination may be used to provide testing of forward and reverse RF signals in an RF amplifier before and/or after amplification. The switchable forward and reverse test point circuit includes at least one switchable termination circuit coupled between forward and reverse terminals of a directional coupler and at least one test point. During forward signal testing, the forward terminal is switched to the at least one test point and the reverse terminal is switched to a termination. During reverse signal testing, the reverse terminal is switched to the at least one test point and the forward terminal is switched to a termination. The RF amplifier including the switchable forward and reverse test point circuit may be used in a hybrid fiber-coaxial (HFC) network delivering CATV services and may be capable of amplifying RF signals up to 1.8 GHz.