De-Embedding Millimeter-Wave Integrated Circuits with TRL

摘要

Through the use of a modification of the TRL (Through-Reflect-Line) method,integrated circuits contained within transitions have been successfully de-embedded. Two waveguide-to-suspended-substrate fixtures of different lengths were fabricated on a computer-controlled mill. Printed circuit waveguide probes were intentionally shortended to make them very reactive. Transmission and reflection measurement of a filter placed between the probes highlight the differences between measured and de-embedded results. This report reviews the theory behind TRL, explains the modifications used, and presents a computer program to de-embedded measurements from a Wiltron 360 network analyzer.