Title :
RF transformer as a directional coupler with arbitrary load
Author :
Biernacki, Janusz ; Czarkowski, Dariusz
Author_Institution :
Dept. of Electr. & Comput. Eng., Polytech. Univ., Brooklyn, NY, USA
Abstract :
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.
Keywords :
directional couplers; high-frequency transformers; power measurement; transmission line theory; RF power measurement; RF transformer; directional coupler; ferrite core; transmission line theory; voltage divider; Coupling circuits; Directional couplers; Distributed parameter circuits; Impedance measurement; Power measurement; Power transmission lines; Radio frequency; Sampling methods; Transmission line theory; Voltage;
Conference_Titel :
Circuits and Systems, 2003. ISCAS '03. Proceedings of the 2003 International Symposium on
Print_ISBN :
0-7803-7761-3
DOI :
10.1109/ISCAS.2003.1205509
