Title:
Design of a 10-Way Conical Transmission Line Power Combiner
Author(s):
Dirk I.L. de Villiers, Pieter W. van der Walt, and Petrie Meyer
Source:
IEEE Transactions on Microwave Theory and techniques
Vol./Issue/Date:
February 2007
Year:
2007
Page(s):
302-308
Keywords:
Combiners, N-way splitters, passive components,
radial combiners, conical combiners, conical transmission
lines
Abstract:
Axially symmetric power combiners, such as radial
line and conical line combiners, are very effective in combining
the output signals from a large number of power amplifiers over
a wide band with low losses. The main problem with radial lines
is the behavior of the characteristic impedance against radial
distance, which makes design of radial combiners difficult and
normally optimization based. In this paper a step-by-step design
procedure is presented for the design of a conical line combiner.
The design strategy relies on the transverse electromagnetic
properties of the conical line to eliminate the need for complex
full wave optimization in the design process. Instead circuit
models are employed and optimized to achieve a wide matched
bandwidth. A 10-way prototype was developed at X-band which
displayed more than an octave matched bandwidth with low
insertion loss.
Document:
Reference Id:
319
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