公开(公告)号：US09841449B2

公开(公告)日：2017-12-12

申请号：US14954048

申请日：2015-11-30

Applicant: Keysight Technologies, Inc.

Inventor： Michael Mikulka ,  Richard Lynn Rhymes ,  Hassan Tanbakuchi ,  Chen-Yu Chi ,  Kenneth H. Wong ,  Thomas Zwick

IPC: G01R27/04 ,  G01R27/28 ,  G01R35/00

CPC classification number: G01R27/28 ,  G01R35/00

Abstract: A system and method corrects the phase of measurement signals obtained from remote heads during testing of a device. A first signal is transmitted along first and second transmission lines to respective remote heads. A shunt switch is connected between a remote end of the first transmission line and a first remote head, and another shunt switch is connected between a remote end of the second transmission line and a second remote head. The shunt switches in a first configuration respectively reflect the first signal back to a phase measurement apparatus as first and second reflected signals. The phase measurement apparatus determines a first reference phase and a second reference phase respectively based on the first and second reflected signals. A compensation unit compensates phase of the measurement signals based on the first and second reference phases.

公开(公告)号：US20170153280A1

公开(公告)日：2017-06-01

申请号：US14954048

申请日：2015-11-30

Applicant: Keysight Technologies, Inc.

Inventor： Michael Mikulka ,  Richard Lynn Rhymes ,  Hassan Tanbakuchi ,  Chen-Yu Chi ,  Kenneth H. Wong ,  Thomas Zwick

IPC: G01R27/28 ,  G01R35/00

CPC classification number: G01R27/28 ,  G01R35/00

Abstract: A system and method corrects the phase of measurement signals obtained from remote heads during testing of a device. A first signal is transmitted along first and second transmission lines to respective remote heads. A shunt switch is connected between a remote end of the first transmission line and a first remote head, and another shunt switch is connected between a remote end of the second transmission line and a second remote head. The shunt switches in a first configuration respectively reflect the first signal back to a phase measurement apparatus as first and second reflected signals. The phase measurement apparatus determines a first reference phase and a second reference phase respectively based on the first and second reflected signals. A compensation unit compensates phase of the measurement signals based on the first and second reference phases.