Title :
Input Match and Output Balance Improvement of Marchand Balun With Connecting Line
Author :
Piekarz, Ilona ; Sorocki, Jakub ; Gruszczynski, Slawomir ; Wincza, Krzysztof
Author_Institution :
AGH Univ. of Sci. & Technol., Cracow, Poland
Abstract :
A novel method allowing for improvement of input match and output balance of Marchand balun with connecting line has been presented. The proposed compensation technique together with the ideal Marchand balun design formulas allow for achieving an arbitrary impedance transformation ratio even for the circuit having a long connecting line. The theoretical analysis has been verified by EM simulations and measurements of a Marchand balun composed of 3 dB coupled-line sections and 30° transmission line operating at the center frequency f 0 = 1.15 GHz and terminated at input and outputs with 50 Ω and 100 Ω, respectively.
Keywords :
baluns; compensation; transmission lines; EM simulations; arbitrary impedance transformation ratio; compensation technique; connecting line; coupled-line sections; frequency 1.15 GHz; ideal Marchand balun design formulas; input match; output balance improvement; transmission line; Bandwidth; Impedance; Impedance matching; Joining processes; Power transmission lines; Transmission line matrix methods; Transmission line measurements; Balun; Marchand balun; compensation technique;
Journal_Title :
Microwave and Wireless Components Letters, IEEE
DOI :
10.1109/LMWC.2014.2342886
