A Power Divider with Adjustable Dividing Ratio

Jongsik LIM  Seongmin OH  Jae-Jin KOO  Yongchae JEONG  Dal AHN  

IEICE TRANSACTIONS on Electronics   Vol.E91-C   No.3   pp.389-391
Publication Date: 2008/03/01
Online ISSN: 1745-1353
DOI: 10.1093/ietele/e91-c.3.389
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Microwaves, Millimeter-Waves
defected ground structure,  DGS,  power dividers,  

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An unequal Wilkinson power divider with adjustable power dividing ratio is proposed. The proposed power divider consists of rectangular defected ground structure (DGS), isolated island in DGS, and varactor diodes. The impedance of the microstrip line greatly increases due to the DGS, and varies because of the varying capacitance of diodes. The measured unequal dividing ratios vary from 1.97-13.4 and 2.25-10.6 when 2- and 4-diodes are adopted.