Design of conical transmission line power combiners using tapered line matching sections
Date
2008
Journal Title
Journal ISSN
Volume Title
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Abstract
An axially symmetric power combiner, which utilizes a tapered conical impedance matching network to transform ten 50-Ω inputs to a central coaxial line over the X-band, is presented. The use of a conical line allows standard transverse electromagnetic design theory to be used, including tapered impedance matching networks. This, in turn, alleviates the problem of very low impedance levels at the common port of conical line combiners, which normally requires very high-precision manufacturing and assembly. The tapered conical line is joined to a tapered coaxial line for a completely smooth transmission line structure. Very few full-wave analyses are needed in the design process since circuit models are optimized to achieve a wide operating bandwidth. A ten-way prototype was developed at X-band with a 47% bandwidth, very low losses, and excellent agreement between simulated and measured results. © 2008 IEEE.
Description
Keywords
Architectural design, Coaxial cables, Computer networks, Electric lines, Impedance matching (electric), Metropolitan area networks, Microstrip lines, Network protocols, Power transmission, Process design, Process engineering, Standards, Structural design, Transmission line theory, Axially symmetric, Circuit modeling, Coaxial line (CL), design processes, High-precision manufacturing, impedance matching, Impedance matching networks, Low losses, Low-impedance, meas ured results, Operating bandwidths, Power combiners, Smooth transmission, Tapered-line, Transmission line (TL), Transverse electromagnetic (TEM), Curve fitting
Citation
IEEE Transactions on Microwave Theory and Techniques
56
6
56
6