Characterization of picosecond electric-pulse propagation on CPW components by transient near-field mapping

Autor:	Jong-Joo Lee, Joungho Kim, Sungkyu Yu
Rok vydání:	2002
Předmět:	Optics Materials science business.industry Transmission line Wave propagation Coplanar waveguide Capacitive sensing Picosecond Near and far field Transient (oscillation) Propagation delay Electrical and Electronic Engineering business
Zdroj:	IEEE Transactions on Advanced Packaging. 25:459-466
ISSN:	1557-9980 1521-3323
DOI:	10.1109/tadvp.2002.806801
Popis:	For the first time, the picosecond electric-pulse propagation characteristics of a few coplanar waveguide (CPW) components, including transmission lines, capacitive open and short terminations and a right-angle bend, have been successfully measured by mapping the time-dependent tangential near-electric-field distributions. The measurement was performed using a two-dimensional photoconductive (PC) near-field mapping system incorporating a recently developed novel PC electric-field probe, which could measure the separate picosecond orthogonal electric-field components with minimal loading effects. The resulting field-images mapped over the structural capacitive open termination and the short termination, showed previously unknown, and quite remarkable, transient picosecond electric-pulse reflection phenomena, which cannot be measured using conventional test instruments. In addition, the images showed that reflection-phenomenon itself required about 1 ps of propagation delay, and that the pulse-reflection from the capacitive open-termination required additional time delay matched to the length of the open-gap between the two slots of the CPW.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::2b9f8197d94adf7af34f4b6eae1e1fbf https://doi.org/10.1109/tadvp.2002.806801 Zobrazit plný text záznamu