DocumentCode :
1132376
Title :
Lumped-Element Quadrature Power Splitters Using Mixed Right/Left-Handed Transmission Lines
Author :
Kuylenstierna, Dan ; Gunnarsson, Sten E. ; Zirath, Herbert
Author_Institution :
Dept. of Microtechnology & Nanoscience, Chalmers Univ. of Technol., Goteborg, Sweden
Volume :
53
Issue :
8
fYear :
2005
Firstpage :
2616
Lastpage :
2621
Abstract :
This paper presents the design of lumped quadrature power splitters (LQPSs) based on unit cells of right-handed (RH) and left-handed (LH) synthetic transmission lines (TLs). The LQPSs include a lumped Wilkinson splitter, with phase-adjusting RH/LH TLs at the outputs. Two topologies, considered to be advantageous with regards to size and electric characteristics, are studied in detail. For these two, closed-form design equations are derived and the performances are analyzed by circuit simulations. The theory and simulation results are experimentally validated by monolithic-microwave integrated-circuit prototypes designed for a center frequency of 2.5 GHz. Both prototypes have performance that agree well with theory and design simulations. Within the frequency range of 2–3 GHz, the maximum amplitude and phase errors are less than 0.3 dB and 3 
, respectively. All reflections and the isolation are better than 
10 dB. The effective areas of the two prototypes are 900 
700 
m 
and 720 520 m , respectively.
, respectively. All reflections and the isolation are better than 10 dB. The effective areas of the two prototypes are 900 700 m and 720 520 m , respectively.Keywords :
MMIC; lumped parameter networks; metamaterials; radiofrequency integrated circuits; transmission lines; 2 to 3 GHz; left-handed transmission lines; lumped Wilkinson splitter; lumped-element quadrature power splitters; monolithic-microwave integrated-circuit prototypes; radiofrequency integrated circuit; right-handed transmission lines; synthetic transmission lines; unit cells; Circuit analysis; Circuit simulation; Circuit topology; Distributed parameter circuits; Electric variables; Equations; Frequency; Power transmission lines; Transmission line theory; Virtual prototyping; 90; Left-handed (LH)/right-handed (RH) material; RF integrated circuit (RFIC); lumped elements; monolithic microwave integrated circuit (MMIC); quadrature power splitter (QPS); synthetic transmission lines (TLs);
fLanguage :
English
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-9480
Type :
jour
DOI :
10.1109/TMTT.2005.852751
Filename :
1492663
Link To Document :
