Method for correcting a high frequency measurement error

A method of correcting a high frequency measurement error associated with the high frequency measurement of an object by a measuring device, the object and measuring device each having a terminal connected thereto and having an interconnection device connected therebetween, said method comprising the steps of:

• (a) modelling an auxiliary device for measuring a high frequency characteristic of the object wherein said auxiliary modelling device comprises first and second transmission lines having respective phase angles and having respective first ends serially connected to each other and forming an electrical junction thereat, said first and second transmission lines having respective second ends remote from said respective first ends defining respective terminals thereat, one of said terminals being configured for connection to the terminal on the object and the other one of said terminals being configured for connection to the terminal on the measuring device, said respective terminals defining respective reflection coefficients, said auxiliary modelling device further comprising a component having a first end connected to said electrical junction in parallel with said first and second transmission lines, said component having a second end connected to an electrical ground;
• (b) setting a reference measurement point using said respective phase angles of said first and second transmission lines;
• and
• (c) calculating a reference impedance of the auxiliary modelling device at said terminal configured for connection to the object based upon a difference between said respective reflection coefficients.