Miniaturized Broadband Lumped-Element In-Phase Power Dividers

Hitoshi HAYASHI  Tadao NAKAGAWA  Kazuhiro UEHARA  Yoshihiro TAKIGAWA  

IEICE TRANSACTIONS on Electronics   Vol.E90-C    No.6    pp.1222-1227
Publication Date: 2007/06/01
Online ISSN: 1745-1353
DOI: 10.1093/ietele/e90-c.6.1222
Print ISSN: 0916-8516
Type of Manuscript: Special Section PAPER (Special Section on Analog Circuits and Related SoC Integration Technologies)
in-phase,  power,  divider,  miniaturized,  lumped-element,  broadband,  

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This paper describes miniaturized broadband lumped-element in-phase power dividers. We first propose two types of miniaturized broadband lumped-element in-phase power dividers composed of two inductors, a resistor, and two capacitors. Next, we use a simulation to compare these dividers with conventional power dividers. The simulation results reveal that the proposed lumped-element in-phase power dividers can help miniaturize circuits (by decreasing inductances by about 30%, reducing the number of necessary capacitors by half, and decreasing necessary capacitances by about 30% as compared to conventional lumped-element dividers) and attain broadband frequency characteristics (by increasing normalized operating frequency bandwidths (f/f0) by about 80% as compared to conventional lumped-element dividers).