Title :
Lumped and distributed lattice-type LC-baluns
Author :
Bakalski, W. ; Simburger, W. ; Knapp, H. ; Wohlmuth, H.-D. ; Scholtz, A.L.
Abstract :
This paper presents two balun circuits derived from the lumped Lattice-type LC-balun. First the lumped LC-balun bridge elements are substituted by microstrip lines. This results in an improved performance at the 2nd and 3rd harmonic frequency for RF power amplifier output baluns. Secondly, the lumped Lattice-type LC-balun is extended to a dual band balun. Independent impedance transformation and balun conversion can be done at two different frequencies. The design equations are derived.
Keywords :
baluns; impedance convertors; microstrip couplers; waveguide junctions; RF power amplifier output; balun conversion; design equations; distributed lattice-type LC-baluns; dual band balun; harmonic frequency; impedance transformation; lumped lattice-type LC-baluns; microstrip lines; Bridge circuits; Dual band; Equations; Frequency conversion; Impedance matching; Microstrip; Power amplifiers; Power system harmonics; Radio frequency; Radiofrequency amplifiers;
Conference_Titel :
Microwave Symposium Digest, 2002 IEEE MTT-S International
Conference_Location :
Seattle, WA, USA
Print_ISBN :
0-7803-7239-5
DOI :
10.1109/MWSYM.2002.1011595
