RF transformer as a directional coupler with arbitrary load

Janusz Biernacki, Dariusz Czarkowski

Research output: Contribution to journalConference article


A bandwidth of a directional coupler for RF power measurement can be significantly extended utilizing a capacitive or a resistive voltage divider and a ferrite core wound with a low number of turns, perhaps one turn on each side. Considerably wide coupling ranges are achievable by arbitrary choosing load values on the coupling side. Transmission line theory illustrates this principle of operation.

Original languageEnglish (US)
Pages (from-to)I97-I100
JournalProceedings - IEEE International Symposium on Circuits and Systems
StatePublished - Jul 14 2003
EventProceedings of the 2003 IEEE International Symposium on Circuits and Systems - Bangkok, Thailand
Duration: May 25 2003May 28 2003


ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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