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High-Bandwidth Coaxial PWB Transmission Line Probe



Nicholas Paulter, Robert H. Palm, Dwight D. Barry


The design and test of a wide bandwidth (3 dB attenuation bandwidth > 20 GHz) , 50 ohm , coaxial probe for the electrical characterization of printed wiring board (PWB) transmission lines is described. The probe makes thousands of repeated contacts, using spring-loaded interconnects, without affecting probe performance. The probe contains an internal mechanism for dissipating static charge on the signal line of the PWB transmission line and is long enough (approximately 10 cm) to act as a transfer standard for characteristic impedance testing per the time-domain reflectometry test method described in IPC TM
Proceedings Title
IPC Printed Circuit Expo 2005 Proceedings of the Technical Conference
Conference Dates
February 19-24, 2005
Conference Location
Anaheim, CA, USA
Conference Title
IPC Printed Circuits Expo


bandwidth, characteristic impedance, coaxial probe, electrical testing, hollow glass spheres, printed wiring board, probe, static dissipation, step response


Paulter, N. , Palm, R. and Barry, D. (2005), High-Bandwidth Coaxial PWB Transmission Line Probe, IPC Printed Circuit Expo 2005 Proceedings of the Technical Conference, Anaheim, CA, USA, [online], (Accessed April 20, 2024)
Created December 4, 2005, Updated October 12, 2021