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- Kuylenstierna, Dan, 1976, et al.
(författare)
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Lumped-element quadrature power splitters using mixed right/left-handed transmission lines
- 2005
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Ingår i: IEEE Transactions on Microwave Theory and Techniques. - 0018-9480 .- 1557-9670. ; 53:8, s. 2616-21
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Tidskriftsartikel (refereegranskat)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 degrees , respectively. All reflections and the isolation are better than -10 dB. The effective areas of the two prototypes are 900*700 mu m/sup 2/ and 720*520 mu m/sup 2/, respectively
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