Patent ID: 6708123
Filing Date: 2004-03-16
Classification: H01J

Abstract:
A voltage and current probe for detecting voltage and current values of an RF power wave that is applied therethrough to an RF load, comprising:a metal housing having a cylindrical bore therethrough, and first and second recesses, the recesses each opening to said cylindrical bore for an axial distance, and wherein said first and second recesses are positioned opposite one another on said metal housing across the axis of said cylindrical bore; a center conductor extending along the axis of said cylindrical bore; a cylindrical insulator within said cylindrical bore surrounding said center conductor and extending radially between said center conductor and said metal housing; a voltage sensor board mounted in the first recess and having a capacitive pickup plate facing radially towards the axis of said cylindrical bore; and a current sensor board mounted in the second recess and having an elongated inductive pickup conductor facing radially towards the axis of said cylindrical bore and extending axially for said axial distance.