DocumentCode :
1558670
Title :
Miniaturized Wilkinson power dividers utilizing capacitive loading
Author :
Scardelletti, Maximilian C. ; Ponchak, George E. ; Weller, Thomas M.
Author_Institution :
NASA Glenn Res. Center, Cleveland, OH, USA
Volume :
12
Issue :
1
fYear :
2002
Firstpage :
6
Lastpage :
8
Abstract :
The authors report the miniaturization of a planar Wilkinson power divider by capacitive loading of the quarter wave transmission lines employed in conventional Wilkinson power dividers. Reduction of the transmission line segments from /spl lambda//4 to between /spl lambda//5 and /spl lambda//12 are reported here. The input and output lines at the three ports and the lines comprising the divider itself are coplanar waveguide (CPW) and asymmetric coplanar stripline (ACPS), respectively. The 10 GHz power dividers are fabricated on high resistivity silicon (HRS) and alumina wafers. These miniaturized dividers are 74% smaller than conventional Wilkinson power dividers, and have a return loss better than +30 dB and an insertion loss less than 0.55 dB. Design equations and a discussion about the effect of parasitic reactance on the isolation are presented for the first time.
Keywords :
alumina; coplanar waveguide components; microwave devices; power dividers; silicon; strip line components; 0.55 dB; 10 GHz; 30 dB; ACPS; Al/sub 2/O/sub 3/; CPW; Si; Wilkinson power divider; asymmetric coplanar stripline; capacitive loading; coplanar waveguide; design equations; high resistivity Si wafers; high resistivity alumina wafers; insertion loss; miniaturized power dividers; parasitic reactance; planar power divider; quarter wave transmission lines; return loss; transmission line segments; Conductivity; Coplanar transmission lines; Coplanar waveguides; Equations; Insertion loss; Planar transmission lines; Power dividers; Power transmission lines; Silicon; Stripline;
fLanguage :
English
Journal_Title :
Microwave and Wireless Components Letters, IEEE
Publisher :
ieee
ISSN :
1531-1309
Type :
jour
DOI :
10.1109/7260.975717
Filename :
975717
Link To Document :
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