Common-mode radiated emissions from UTP/STP cables with differential high-speed drivers/receivers

Author

Caniggia, S. ; Santi, P.

Author_Institution

Italtel, Milan, Italy

Volume

2

fYear

2003

fDate

18-22 Aug. 2003

Firstpage

564

Abstract

Common-mode current effects on radiated emissions, due to imbalance between rise and fall time of the differential output of line drivers for high-speed digital signals, are investigated by experimental measurements, numerical and SPICE simulations. Three driver families are characterized: LV34 (RS422), LVDS, and LVPECL. Unshielded (UTP) and Shielded Twisted Pair (STP) of Cat. 5 were the cables used in this investigation in order to minimize the contribution due to the imbalance of the wires. The EMC performances of connectors such as 5×2 pins z-pack, RJ45 and Sub D 9 pins with STP cable are also presented.

Keywords

electromagnetic compatibility; electromagnetic interference; twisted pair cables; LV34; LVDS; LVPECL; RS422; SPICE simulations; STP cables; UTP cables; common-mode radiated emissions; differential drivers; differential receivers; high-speed digital signals; line drivers; numerical simulation; shielded twisted pair; unshielded twisted pair; Antenna measurements; Broadband antennas; Cables; Connectors; Current measurement; Electromagnetic compatibility; Pins; Testing; Voltage; Wires;

fLanguage

English

Publisher

ieee

Conference_Titel

Electromagnetic Compatibility, 2003 IEEE International Symposium on

Print_ISBN

0-7803-7835-0

Type

conf

DOI

10.1109/ISEMC.2003.1236664

Filename

1236664